20-F

As filed with the Securities and Exchange Commission on June 29, 2018

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

FORM 20-F

¨ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended March 31, 2018

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from             to            

OR

¨ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report           

Commission file number: 0-30204

Kabushiki Kaisha Internet Initiative

(Exact Name of Registrant as Specified in Its Charter)

Internet Initiative Japan Inc.

(Translation of Registrant’s Name Into English)

Japan

(Jurisdiction of Incorporation or Organization)

Iidabashi Grand Bloom, 2-10-2 Fujimi, Chiyoda-ku, Tokyo 102-0071 Japan

(Address of Principal Executive Offices)

Natsuko Kiyoshi, +81-3-5205-6500, +81-3-5205-6441,

Iidabashi Grand Bloom, 2-10-2 Fujimi, Chiyoda-ku, Tokyo 102-0071 Japan

(Name, Telephone, Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange On Which Registered
Common Stock	The NASDAQ Stock Market

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None

(Title of Class)

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

None

(Title of Class)

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report.

As of March 31, 2018, 46,713,800 shares of common stock were outstanding, including 811,425 shares represented by an aggregate of 1,622,850 American Depositary Shares.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Yes ¨ No þ

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

Yes ¨ No þ

Note—Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes þ No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes þ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See definition of “large accelerated filer,” “accelerated filer,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer þ Accelerated Filer ¨   Non-Accelerated Filer ¨ Emerging growth company ¨

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. ¨

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP þ International Financial Reporting Standards as issued by the International Accounting Standards Board ¨ Other ¨ 

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.

Item 17 ¨ Item 18 ¨

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨ No þ

TABLE OF CONTENTS

PART I	2
Item 1. Identity of Directors, Senior Management and Advisers	2
Item 2. Offer Statistics and Expected Timetable	2
Item 3. Key Information	2
Item 4. Information on the Company	23
Item 5. Operating and Financial Review and Prospects	48
Item 6. Directors, Senior Management and Employees	86
Item 7. Major Shareholders and Related Party Transactions	96
Item 8. Financial Information	98
Item 9. The Offer and Listing	99
Item 10. Additional Information	101
Item 11. Quantitative and Qualitative Disclosures about Market Risk	114
Item 12. Description of Securities Other than Equity Securities	115
PART II	116
Item 13. Defaults, Dividend Arrearages and Delinquencies	116
Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds	116
Item 15. Controls and Procedures	116
Item 16A. Audit Committee Financial Expert	120
Item 16B. Code of Ethics	120
Item 16C. Principal Accountant Fees and Services	120
Item 16D. Exemptions from the Listing Standards for Audit Committees	121
Item 16E. Purchases of Equity Securities by the Issuer and Affiliated Purchasers	122
Item 16F. Change in Registrant's Certifying Accountant	122
Item 16G. Corporate Governance	122
Item 16H. Mine Safety Disclosure	123
PART III	124
Item 17. Financial Statements	124
Item 18. Financial Statements	124
Item 19. Exhibits	124

Cautionary Note Regarding Forward-Looking Statements

This annual report contains forward-looking statements about us and our industry that are based on our current expectations, assumptions, estimates and projections. These forward-looking statements are subject to various risks and uncertainties. These statements discuss future expectations, identify strategies, discuss market trends, contain projections of results of our operations and our financial condition, and state other forward-looking information. Known and unknown risks, uncertainties and other factors could cause our actual results to differ materially from those contained in or suggested by any forward-looking statement. We cannot provide any assurance that our expectations, projections, anticipated estimates or other information expressed in these forward-looking statements will turn out to be correct. We do not undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Important risks and factors that could cause our actual results to differ materially from our forward-looking statements are generally provided in Item 3.D. “Risk Factors” and elsewhere in this annual report on Form 20-F and include, without limitation:

· that we may not be able to achieve or sustain profitability in the near future,

· that we may not be able to compete effectively against competitors which have greater financial, marketing and other resources, and

· that our investments in our subsidiaries, affiliated companies, new business and service developments may not produce the returns we expect or may adversely affect our results of operations and financial condition adversely.

1

As used in this annual report, references to “IIJ” are to Internet Initiative Japan Inc. and references to “the Company,” “the Group,” “we,” “our,” “our group” and “us” are to Internet Initiative Japan Inc. and its subsidiaries except as the context otherwise requires.

References in this annual report to “yen” or “¥” are to Japanese yen and references to “U.S. dollars” or “$” are to United States dollars.

PART I

Item 1. Identity of Directors, Senior Management and Advisers

Not applicable.

Item 2. Offer Statistics and Expected Timetable

Not applicable.

Item 3. Key Information

A.Selected Financial Data

The following tables include selected historical financial data as of and for each of the fiscal years ended March 31, 2014, 2015, 2016, 2017, and 2018. The data in the table is derived from our audited consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), and audited by Deloitte Touche Tohmatsu LLC, an independent registered public accounting firm. You should read the selected consolidated financial data together with Item 5. “Operating and Financial Review and Prospects” of this annual report on Form 20-F and our consolidated financial statements and the notes to our consolidated financial statements beginning on page F-1. 

2

	As of and for the fiscal year ended March 31,
	2014			2015			2016			2017			2018
	(millions of yen, except per share and ADS data)
Statement of Income Data:
REVENUES:
Network services:
Internet connectivity services (enterprise)	¥	16,585		¥	16,350		¥	17,597		¥	22,634		¥	27,944
Internet connectivity services (consumer)		6,025			8,222			15,256			21,735			24,761
WAN services		25,006			24,326			25,177			26,460			29,295
Outsourcing services		19,670			20,108			21,266			22,167			26,119
Total		67,286			69,006			79,296			92,996			108,119
Systems integration:
Systems construction		18,673			20,437			21,145			22,626			22,528
Systems operation and maintenance		23,796			27,800			33,043			35,123			37,903
Total		42,469			48,237			54,188			57,749			60,431
Equipment sales		1,690			2,167			3,275			2,994			3,470
ATM operation business		2,827			3,640			3,889			4,050			4,031
Total revenues		114,272			123,050			140,648			157,789			176,051
COSTS AND EXPENSES:
Cost of network services		53,046			54,932			64,239			76,387			88,698
Cost of systems integration		36,510			41,562			46,226			50,992			53,612
Cost of equipment sales		1,527			1,932			2,969			2,735			3,142
Cost of ATM operation business		2,123			2,552			2,559			2,428			2,366
Total costs		93,206			100,978			115,993			132,542			147,818
Sales and marketing		8,548			9,188			10,589			11,432			12,688
General and administrative		6,374			7,368			7,471			8,215			8,296
Research and development		421			441			455			466			487
Total costs and expenses		108,549			117,975			134,508			152,655			169,289
OPERATING INCOME		5,723			5,075			6,140			5,134			6,762
OTHER INCOME (EXPENSES):
Dividend income		51			63			93			118			243
Interest income		27			23			28			35			31
Interest expense		(256	)		(238	)		(241	)		(304	)		(375	)
Net gain on sales of other investments		108			41			24			217			1,068
Other — net		622			175			149			227			111
Other income — net		552			64			53			293			1,078
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES		6,275			5,139			6,193			5,427			7,840
INCOME TAX EXPENSE		1,795			1,897			2,183			2,225			2,696
EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES		204			155			180			130			135
NET INCOME		4,684			3,397			4,190			3,332			5,279
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(242	)		(75	)		(152	)		(165	)		(170	)
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥	4,442		¥	3,322		¥	4,038		¥	3,167		¥	5,109

3

	As of and for the fiscal year ended March 31,
	2014			2015			2016			2017			2018
	(millions of yen, except per share and ADS data)
Per Share and ADS Data:
Basic net income attributable to IIJ per common share	¥	100.26		¥	72.31		¥	87.88		¥	69.36		¥	113.37
Diluted net income attributable to IIJ per common share		100.14			72.20			87.71			69.18			112.99
Basic net income attributable to IIJ per ADS equivalent		50.13			36.16			43.94			34.68			56.69
Diluted net income attributable to IIJ per ADS equivalent		50.07			36.10			43.86			34.59			56.50
Cash dividends declared per share:
Japanese Yen	¥	22.00		¥	22.00		¥	22.00		¥	27.00		¥	27.00
U.S. Dollars (1)	$	0.21		$	0.18		$	0.20		$	0.24		$	0.24
Basic weighted-average number of shares		44,306,680			45,942,291			45,950,098			45,652,981			45,062,878
Diluted weighted-average number of shares		44,361,083			46,014,737			46,043,383			45,772,470			45,215,686
Basic weighted-average number of ADS equivalents (thousands)		88,613			91,885			91,900			91,306			90,126
Diluted weighted-average number of ADS equivalents (thousands)		88,722			92,029			92,087			91,545			90,431
Balance Sheet Data:
Cash and cash equivalents	¥	22,421		¥	21,094		¥	19,569		¥	21,959		¥	21,403
Total assets		103,867			108,705			117,835			137,395			153,449
Short-term borrowings		9,400			9,250			9,250			9,250			9,250
Long-term borrowings, including capital lease obligations:
Current portion		4,733			3,522			3,954			4,819			5,656
Noncurrent portion		4,603			4,340			7,779			18,885			26,421
Common stock		25,497			25,500			25,509			25,509			25,512
Total IIJ shareholders’ equity		59,912			62,504			64,845			66,742			73,270
Operating Data:
Capital expenditures, including capitalized leases (2)	¥	12,560		¥	11,835		¥	14,812		¥	16,531		¥	20,828
Operating margin ratio (3)		5.0	%		4.1	%		4.4	%		3.3	%		3.8	%
Net cash provided by (used in):
Operating activities	¥	8,787		¥	12,912		¥	12,052		¥	7,368		¥	13,262
Investing activities		(10,203	)		(8,073	)		(8,377	)		(7,376	)		(13,037	)
Financing activities		11,382			(6,283	)		(5,201	)		2,492			748

_________________

(1) The dividends per share were translated into U.S. dollars at the relevant record date.

(2) Further information regarding capital expenditures, including capitalized leases and a reconciliation to the most directly comparable U.S. GAAP financial measure can be found in the following page.

(3) Operating income as a percentage of total revenues.

4

Reconciliations of the Disclosed Non-GAAP Financial Measures to the Most Directly Comparable GAAP Financial Measures

Capital expenditures

We define capital expenditures as purchases of property and equipment plus acquisition of assets by entering into capital leases. We have included the information concerning capital expenditures because our management monitors our capital expenditure budgets and believes that it is useful to investors to know the trends of our capital expenditures and analyze and compare companies on the basis of such investments. Capital expenditures, as we have defined it, may not be comparable to similarly titled measures used by other companies.

The following table summarizes the reconciliation of capital expenditures to purchases of property and equipment and acquisition of assets by entering into capital leases as reported in our consolidated statements of cash flows prepared and presented in accordance with U.S. GAAP.

	For the fiscal year ended March 31,
	2014		2015		2016		2017		2018
	(millions of yen)
Capital expenditures:
Acquisition of assets by entering into capital leases(1)	¥	3,436	¥	3,678	¥	6,118	¥	8,302	¥	7,109
Purchases of property and equipment(2)		9,124		8,157		8,694		8,229		13,719
Total capital expenditures	¥	12,560	¥	11,835	¥	14,812	¥	16,531	¥	20,828

_____________________

(1) Regarding the acquisition of assets by entering into capital leases for the fiscal year ended March 31, 2016, sales-type leases are excluded from purchase of property and equipment disclosed in our consolidated financial statement of cash flows.

(2) Regarding the purchases of property and equipment for the fiscal years ended March 31, 2016, 2017, and 2018, sales-leaseback transactions are excluded from purchases of property and equipment disclosed in our consolidated financial statements of cash flows.

5

Exchange Rates

Fluctuations in exchange rates between the Japanese yen and the U.S. dollar will affect the U.S. dollar and other currency equivalent of the yen price of IIJ shares and the U.S. dollar amounts received on conversion of any cash dividends, which in turn will affect the U.S. dollar price of IIJ ADSs. We have translated some Japanese yen amounts presented in this annual report into U.S. dollars solely for your convenience. Unless otherwise noted, the rate used for the translations was ¥106.20 per U.S. $1.00, which was the noon buying rate in New York City for cable transfers in foreign currencies as certified for customs purposes by the Federal Reserve Bank of New York prevailing as of March 30,　2018. Translations do not imply that the yen amounts actually represent, or have been or could be converted into, equivalent amounts in U.S. dollars.

The following table presents the noon buying rates for Japanese yen per U.S. $1.00 in New York City for cable transfers in foreign currencies as certified for customs purposes by the Federal Reserve Bank of New York:

Fiscal year ended March 31, (1)	High		Low		Average(2)		Period-end
2014	¥	105.25	¥	92.96	¥	100.46	¥	102.98
2015		121.50		101.26		110.78		119.96
2016		125.58		111.30		120.13		112.42
2017		118.32		100.07		108.31		111.41
2018		114.25		104.83		110.70		106.20
Calendar year 2018
January	¥	113.18	¥	108.38	¥	110.87	¥	109.31
February		110.40		106.10		107.97		106.62
March		106.91		104.83		106.05		106.20
April		109.33		105.99		107.66		109.28
May		111.08		108.62		109.69		108.73
June (through June 22, 2018)		110.58		109.45		110.02		109.98

_____________________

(1) Exchange rate refers to the foreign exchange rate as set forth in the H.10 statistical release and historical data of the Board of Governors of the Federal Reserve System.

(2) For fiscal years, calculated from the average of the exchange rates on the last day of each month during the period. For calendar year months, calculated based on the average of daily exchange rates.

The noon buying rate on June 22, 2018 was ¥109.98 per $1.00.

A. Capitalization and Indebtedness

Not required.

B. Reasons for the Offer and Use of Proceeds

Not applicable.

6

D. Risk Factors

You should carefully consider the following information, together with the other information contained in this annual report on Form 20-F, including our consolidated financial statements and the related notes, before making an investment decision. Any risks described below could result in a material adverse effect on our business, financial condition or results of operations.

We may not maintain our current level of revenues and profits or achieve our expected revenues and profits in the future.

Our business is principally conducted in Japan and most of our revenues are from customers operating in Japan. For the fiscal year ended March 31, 2018, approximately 97% of our total revenues were from customers operating in Japan. If the Japanese economy deteriorates and that results in significantly lower levels of network and systems related investment and expenditures, customers may respond to such conditions by prioritizing low prices over quality, or we may experience severe price reduction pressure and/or cancellation of large accounts. Such conditions may also make it difficult to maintain our current level of revenues and income, or achieve our expected revenues and income, or payout our target dividends.

In addition to factors related to general economic conditions in Japan, we may not be able to maintain our current level of revenues and income or achieve our expected levels of revenues and income. In fact, we revised our disclosed financial targets downward for the fiscal years ended March 31, 2014, 2015, and 2017 due to several factors unrelated to general economic conditions in Japan. Operating income for the fiscal year ended March 31, 2017 decreased from that of fiscal year ended March 31, 2016. Factors that may prevent us from maintaining our current level of revenues and income or achieving our expected levels of revenues and income include but are not limited to the following:

· a decrease or weaker than expected growth in our network services revenues which include Internet connectivity services for enterprise, Internet connectivity services for consumers, Wide Area Network (“WAN”) services, and outsourcing services if, for example, we fail to develop and offer competitive services and solutions in a timely manner, if our service line-ups become obsolete, if we fail to keep up with rapidly changing market trends, especially for the consumer market, if service prices fall dramatically due, for example, to tough competition regarding customer acquisition, especially for our mobile services for consumers which are provided through direct sales, sales partnerships, and Mobile Virtual Network Enabler (“MVNE”) strategy, or if we experience cancellations or usage reductions, especially in large accounts, due, for example, to corporate customers’ demand to cut costs or a decrease in customers’ needs for network usage for enterprise services,

· a decrease or weaker than expected growth in our systems construction revenues and lower margins if, for example, we fail to successfully differentiate our technical skills from those of our competitors, if corporate customers put off placing orders with us, if we fail to hire adequate employees or acquire outsourcing resources to complete systems projects appropriately, if we fail to effectively manage and assign outsourcing resources, if we have serious troubles or problems in certain projects which may become unprofitable or incur losses, especially for large-scale projects, or if we pursue unprofitable construction projects in order to, for example, gain greater business opportunities and to acquire continuous systems operation and maintenance profit in the future. Our systems construction revenues may decrease due to the continuing trend of cloud computing services replacing conventional on-site hardware,

· a decrease or weaker than expected growth in our systems operation and maintenance revenues and lower margins if, for example, the number and the size of systems construction projects which contain continuous systems operation and maintenance decrease or do not significantly increase, if our cloud computing services revenues do not grow as anticipated, or if we fail to effectively manage and assign outsourcing resources, or if we have serious troubles or problems in certain projects which may become unprofitable or incur losses. Also, we may have cancellations or reductions in current systems operation and maintenance revenues due, for example, to severe price reduction requirements, especially for large-scale projects, or due to customers’ intention to reduce or eliminate their systems,

7

· an inability to achieve anticipated revenue and income growth for our cloud computing services, in which we have been continuously investing in facilities such as some portion of our data centers, servers, storages, software and other equipment as well as service developments if, for example, the cloud computing market in Japan does not expand as large as we expect or takes a longer time to expand than we expect, if we fail to successfully differentiate our services from those of our increasing number of competitors, including global players, if we have serious system troubles and interruptions with our cloud computing services that damage our credibility or cause customers to question the reliability of our services, if market prices for the services fall dramatically, if we experience cancellations of large contracts or reduction of usage, or if Japanese companies strongly maintain their current systems and fail to adopt cloud computing services to the extent currently anticipated. We decided to build our own data center in order to meet the future data center capacity demand as well as integrate our data center racks that are currently widely dispersed among Eastern Japan area’s data centers. We plan to place module-based data center, rather than a traditional building-based data center. For more discussion on the risks related to our cloud computing services, please refer to other parts of “Risk Factors” including “Our investment in our new business and service developments may not produce the returns we expect or may affect our results of operations and financial condition adversely.”

· an inability to achieve anticipated revenue and income growth for our mobile services for both enterprise and consumer, in which we have been expanding our service infrastructure by increasing the purchasing volume of mobile bandwidth mainly from NTT DoCoMo Inc. (“NTT Docomo”), enhancing marketing activities, including increasing related advertisement expenses, if, for example, the Japanese inexpensive LTE Subscriber Identity Module (“SIM”) card market does not expand as we expect or takes a longer time to expand than we expect, if we experience severe customer acquisition and/or price competition, if Mobile Network Operators (“MNOs”) and their affiliated companies which currently dominate the Japanese consumer mobile market further implement low price strategies, if we fail to successfully differentiate our services from those of an increasing number of competitors, if we fail to carry out our marketing strategy and are left with significant increases in selling, general and administrative (“SG&A”) expenses, if we fail to maintain appropriate relationships with our sales partners, if we face troubles in providing services which damage our credibility, if we are faced with heavy concentrations of mobile traffic at certain hours which requires us to purchase greater than our expected volume of bandwidth thus resulting in cost increases, or if we experience an unexpected level of wholesale telecommunication services charge changes by MNOs, such as NTT Docomo. We launched full-Mobile Virtual Network Operator (“MVNO”) services in March 2018 and plan to expand our service line-up. In light of the service launch, our network services’ fixed type cost is expected to increase by approximately ¥0.1 billion per month, consisting mainly of depreciation cost for HLR (Home Location Register) and HSS (Home Subscriber Server) systems constructed by us, and the accumulation of monthly payments to NTT Docomo for its network remodeling which will not be recognized as our capital expenditures but will be included in our monthly payments to NTT Docomo. For more discussion on the risks related to our mobile business, please refer to other parts of “Risk Factors” including “Our investment in our new business and service developments may not produce the returns we expect or may affect our results of operations and financial condition adversely.”

8

· an inability to achieve anticipated revenue and income growth for our overseas business, in which we have been investing in overseas subsidiaries, facilities and increasing staff, if, for example, we fail to offer competitive services and solutions, if our domestic customers reduce their overseas business and/or refrain from operating overseas business, if we fail to develop a customer base overseas, if we fail to attract and attain qualified personnel overseas, if we fail to provide our services as reliably as we provide them in the domestic market, if we fail to successfully work with business partners abroad, or if we fail to adequately control overseas subsidiaries and comply with necessary regulations. We may expand our presence overseas by, for example, increasing overseas subsidiaries or participating in more joint ventures with local companies. For more discussion on the risks related to our overseas business, please refer to other parts of “Risk Factors” including “Our investment in our new business and service developments may not produce the returns we expect or may affect our results of operations and financial condition adversely.”

· a decline in the profitability of network services if, for example, we invest in and contract more network capacity, including service facilities, than we actually require to serve our customers, if we experience unexpected increases or smaller-than-expected decreases in prices such as for electricity, leasing lines for our Internet backbone and interconnectivity bandwidth for MVNO infrastructure. These unexpected price fluctuations could be due, for example, to a shortage in electricity, an increase in Internet traffic volume and general demand for the infrastructure. There may also be price increases for international leasing lines and network equipment for service facilities, including cloud computing services, due, for example, to the weaker Japanese yen,

· slower and/or weaker than expected revenues growth against significant investments in business such as back-office systems, research and development, and other similar expenses and investments which we may be forced to make in the future in order to remain competitive or support business growth, and an unexpected level of increase in depreciation and amortization, loss on disposal, or loss due to obsolescence. We may continuously reinforce our back-office operations by making necessary investments to support revenue growth,

· an unexpected level of increase in personnel and outsourcing costs as well as related operating costs and expenses including office rent expenses if, for example, we fail to manage personnel and outsourcing resources effectively, if we experience a shortage of human resources in the market, or if we face pressure to raise individual salaries by a large amount due, for example, to Japanese labor market situation. As for our overall personnel costs, they continuously increase year over year as we acquire new employees in addition to the regular annual pay raise for existing employees. We may fail to raise enough revenue to cover the increase in these costs and expenses.

· an unexpected level of increase in SG&A expenses, such as personnel-related expenses, office rent-related expenses, sales commission expenses, and advertising expenses,

· the recording of an impairment loss on current and future intangible assets, which are recognized in relation to any mergers and acquisitions, that are subject to amortization, such as customer relationships, and/or are not subject to amortization, such as goodwill, as a result of an impairment test,

· the recording of an impairment loss and/or a retirement on tangible assets, software, network, service facilities and others if they fail to generate future cash flow as expected,

9

· the recording of impairment losses on nonmarketable equity securities and funds,

· the recording of unrealized gains and/or losses in other income (expenses) due to fluctuation of share prices for our available-for-sale equity securities following the revision of U.S. GAAP. Unrealized gains or losses on holding available-for-sale equity securities as recorded on our consolidated balance sheet as of March 31, 2018 were measured based on closing prices of March 30, 2018, the final day of trading in the fiscal year ended March 31, 2018 and were reclassed from accumulated other comprehensive income to retained earnings at the beginning of the fiscal year ending March 31, 2019. For future periods, fluctuations of unrealized gains or losses due to fluctuation of stock prices will be recognized in other income (expenses) in every quarter under the U.S. GAAP.

We are considering to voluntarily adopt International Financial Reporting Standards (“IFRS”) from the filing of our annual report for the fiscal year ending March 31, 2019. Until then, we plan to continue preparing our consolidated financial statements disclosed in earnings press release as well as in the Convocation Notice for the 27^th Ordinary General Meeting for Shareholders under U.S. GAAP. Because of different accounting principles, especially on different processing on unrealized gains or losses on holdings available-for-sale equity securities, our consolidated financial statements disclosed in the annual report, which might be prepared under IFRS, might differ from our consolidated financial statements disclosed in earnings press release as well as in the Convocation Notice for the 27th Ordinary General Meeting for Shareholders, which will be prepared under the U.S. GAAP.

· the recording of foreign exchange gain and/or loss such as for our U.S. dollars and British pounds denominated bank deposits, other overseas assets, and liabilities related to our overseas business,

· the decline in the value and trading volume of our holding of available-for-sale securities from which we expect gains on sale,

· a negative effect on our revenues and profits if our consolidated subsidiaries and/or equity method investees including newly established ones, such as DeCurret Inc. (“DeCurret”) which is to provide cryptocurrency exchange and settlement business as well as JOCDN Inc. (“JOCDN”) which provides contents distribution network (“CDN”) services, cannot achieve our expected levels of revenues or manage costs and expenses in a timely and adequate manner,

· a negative effect on our credibility, corporate image, or revenues and profits if we are unable to provide our services without interruption to customers due, for example, to power supply shortage, and

· a negative effect on our revenues and profits if new business areas to which we are to emphasize business investment such as content distribution, Machine to Machine (“M2M”), Internet of Things (“IoT”), health care and further development of overseas business cannot achieve our expected level of revenues or manage costs and expenses in a timely and adequate manner.

We disclosed our middle term plan for the period from the fiscal year ended March 31, 2017 to the fiscal year ending March 31, 2021 in our earnings results for the fiscal year ended March 31, 2016, which was filed as Form 6-K on May 13, 2016. The middle term plan was made based on our current expectation about, for example, the related markets and economic situations. The plan, especially regarding our target for the fiscal year ending March 31, 2021, is not made by accumulating each revenue line or operating cost item. We are not certain that we will be able to achieve our middle term plan due to such risks as weaker or slower than expected market expansion or a failure to execute growth strategies effectively. Please see Item 5, “Operating and Financial Review and Prospects” for more detailed information concerning our operations and other results.

We may not be able to compete effectively, especially against competitors with greater financial, marketing and other resources.

The major competitors of our network services are major telecommunications carriers such as NTT Communications Corporation (“NTT Communications”) and KDDI Corporation (“KDDI”). Price competition for Internet connectivity services, outsourcing services, and WAN services has been severe. This competition may adversely affect our revenues and profitability and may make it difficult for us to retain existing customers or attract new customers. The major competitors of our systems integration business are systems integrators, such as NEC Corporation, Fujitsu Limited, NTT Data Corporation and their affiliates. Our major competitors have the financial resources to reduce prices in an effort to gain market share. There is strong competition among systems integrators that may adversely affect our revenues and profitability. Even though the NTT Group, which is comprised of companies such as Nippon Telegraph and Telephone Corporation (“NTT”) and NTT Communications, is IIJ's largest shareholder, we plan to continue to operate the Company separately and independently from the NTT Group, and will therefore continue to compete with the NTT Group.

10

We anticipate that cloud computing services for enterprise should become widely used in Japan in the middle-to long-term. In addition to the competitors listed above, global players such as Amazon Web Services, Inc. and MICROSOFT CORPORATION have been aggressively expanding their business and may put additional business resources into the cloud computing business which may lead to strong competition, including price competition, in Japan. If we fail to successfully differentiate our services and solutions from these competitors, we may not be able to achieve expected future revenues and income, or we may not recoup our investments in cloud computing services, which may adversely affect our financial condition and results of operations.

As for our consumer business, especially our mobile services for consumers, in which we offer inexpensive LTE SIM cards through an MVNO scheme, we may not be able to achieve expected future revenues and income due, for example, to severe competition for pricing and customer acquisition, as a growing number of competitors and companies with greater financial resources enter the market, a failure to differentiate our services from competitors, our limited brand recognition among consumers and a lack of experience in providing services to consumers. Moreover, we may increase marketing expenses in order to improve our limited brand recognition among consumers. The major competitors of consumer mobile services business are NTT Docomo, KDDI, SoftBank Group Corp. (“SoftBank”), their affiliated companies, and MVNOs including NTT Communications Furthermore, additional new competitors may emerge and the competitive landscape may change.

We are enhancing our indirect sales channels with partnership programs, although currently our sales channels with respect to small and medium enterprises and the consumer market are not as strong as those of our established and well recognized larger competitors.

Our competitors have advantages over us, including, but not limited to:

· substantially greater financial resources, more extensive and well-developed marketing and sales networks,

· a larger pool of technology human resources including application development engineers,

· higher brand recognition among consumers and corporate customers,

· larger customer bases, and

· more diversified operations which allow profits from some operations to support operations with lower profitability.

With these advantages, our competitors may be better able to:

· sustain downward pricing pressure, including pressure on low-price Internet connectivity services offered to corporate customers, which are our target customers,

· develop, market and sell their services,

· adapt quickly to new and changing technologies,

· obtain new customers, and

· aggressively pursue mergers and acquisitions to enlarge their customer base and market share.

11

Our investment in our new business and service developments may not produce the returns we expect or may adversely affect our results of operations and financial condition.

We have been investing in new business, service and solution developments to further grow our business. Such investments include, for example, an increase in human resources and capital expenditures. As for the number of our employees, we had 2,980, 3,104 and 3,203 employees as of March 31, 2016, 2017, and 2018 respectively. Capital expenditures, including capitalized leases, depreciation and amortization expenses for property and equipment, and working capital are increasing along with our business expansion efforts. Capital expenditures, including capitalized leases, for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥14.8 billion, ¥16.5 billion and ¥20.8 billion, respectively. Capital expenditure in the fiscal year ended March 31, 2018 include approximately ¥1.2 billion for the acquisition of land for our own new data center of as well as approximately ¥3 billion of capital expenditures for cloud service facility in Western Japan for usage from the fiscal year ending March 31, 2019. Depreciation and amortization expenses for property and equipment for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥9.5 billion, ¥10.5 billion and ¥12.0 billion respectively. If our investment returns are not realized in the future, our investments may become obsolete, which may adversely affect our financial condition and results of operations. Our recent enhanced business investments could lead to a greater uncertainty in our financial outlook.

We are investing heavily in our cloud computing services and infrastructure as the cloud computing services market in Japan is anticipated to grow over the middle term. Revenues for our cloud computing services for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥14.1 billion, ¥15.7 billion and ¥17.9 billion, respectively. The capital expenditures, including capitalized leases, related to our domestic cloud computing services for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥4.4 billion, ¥3.6 billion and ¥7.9 billion, respectively. Capital expenditures during the fiscal year ended March 31, 2018 include approximately ¥3 billion of capital expenditures for a cloud service facility in Western Japan for usage from the fiscal year ending March 31, 2019. As we expand our cloud computing services capabilities in order to meet the increasing demand, we will need to acquire more servers, network equipment and data center facilities, as well as human resources. Along with our business investments for cloud computing services, related costs such as depreciation and amortization are increasing significantly compared to cloud-related revenue. We anticipate that we can leverage our strong customer base and our engineering skills to further expand our cloud computing related services; however, if the expansion of the cloud computing market does not proceed at its expected pace or takes longer than expected, if we face troubles in providing cloud computing services which damage our credibility or lead customers to question the reliability of our services, if we fail in our marketing strategy and fail to introduce cloud service line-ups that are superior to our competitors and promote business enterprises’ cloud usage, if we invest more than customers demand, if severe price competition occurs, or if we should need more human resources and incur unexpected additional costs, we may not be able to achieve the returns or benefits we expect or we may need to increase the amount of our investments.

12

We have been providing mobile services from January 2008 by purchasing NTT Docomo’s mobile network infrastructure as an MVNO. The total (sum of enterprise and consumer) mobile services revenues were ¥15.6 billion, ¥26.7 billion and ¥35.3 billion for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. The total number of our mobile services subscriptions was approximately 1,228 thousand, 1,856 thousand and 2,345 thousand as of March 31, 2016,　2017, and 2018, respectively. This increase is mainly due to growth in mobile services for consumers in which we offer inexpensive LTE SIM cards through MVNE scheme. Currently, most Japanese mobile phone consumers are contracted with mobile network carriers such as NTT Docomo, KDDI, and Softbank. We anticipate that the inexpensive LTE SIM card market in Japan should expand in the middle term because a small portion of Japanese mobile phone users are contracted with inexpensive LTE SIM card services. We may not be able to achieve our anticipated level of business growth if, for example, the market does not expand as currently anticipated, if MNOs and their affiliated companies implement strategies in order to maintain their customer base by dramatically lowering their pricing or offering comprehensive bundled services to make it harder for consumers to switch contracts to other providers, if price competition becomes severe, if we fail to differentiate our services from our competitors, if changes in regulation adversely affect our business, if we significantly damage our reputation or decrease customer trust by failing to offer reliable connectivity or cause serious systems or network troubles or if we fail to maintain or develop appropriate relationships with sales partners, if we face unfavorable changes in business conditions with these sales partners, including sales commission terms, or if we mismanage our marketing expenses, we may not be able to achieve our expected levels of business growth and could negatively impact our profit level. In fact, the affiliated companies of KDDI and Softbank in particular are aggressively promoting their consumer mobile services. Because business enterprise has been our main customer domain, IIJ is not well known among consumers. Therefore, we rely on our partnerships for sales channels, including prominent consumer retailers who have nationwide stores in order to have face-to-face sales counters, as well as MVNE strategy, through which we provide our MVNO infrastructure to corporate customers so that they can incorporate it into their own services, in order to generate subscriptions. The cost structure of mobile services imposes uncertainty on our financial outlook. Our mobile infrastructure purchasing volume from NTT Docomo has been increasing along with the growing subscriptions of our mobile services for consumers. We pay NTT Docomo a wholesale telecommunication service charge, which is a flat-rate charge per Mbps and the same charge currently has been applied to all of NTT Docomo’s MVNOs. The charge is calculated annually and it is mainly based on NTT Docomo’s mobile data communication infrastructure volume and its related costs, in accordance with the law and the guidelines administrated by the Ministry of Internal Affairs and Communications (“MIC”). The charge that was applied to our purchasing volume from NTT Docomo during the fiscal year ended March 31, 2018 was based on NTT Docomo’s mobile data communication infrastructure volume and related costs for the fiscal year ended March 31, 2017. The charge was fixed and notified to MVNOs purchasing volume from NTT Docomo, including us, in March 2018. The charge has been applied to not only our purchasing volume during the fiscal year ended March 31, 2018, but also during the fiscal year ended March 31, 2017. NTT Docomo’s unit price of wholesale telecommunication volume was revised in March 2018 for a decrease of 18.2% year over year, compared to 14.1% decrease in the previous year. This relatively large decrease seems to be mainly due to NTT Docomo’s cost decrease related to their change in depreciation method from declining-balance to straight line method from their fiscal year ended March 31, 2017. We need to apply our own estimated charge from the beginning of a fiscal year and calculate quarterly financial results based on our own estimated charge until the charge is finalized, generally in March. If there is a gap between our estimated charge decrease rate and the actual revised charge decrease rate, we will record increased costs if the actual revised charge decrease is smaller than our estimated charge decrease rate and will record decreased costs if the actual revised charge decrease is larger than our estimated charge decrease rate. As the volume we purchase from NTT Docomo increases, the uncertainty regarding our financial outlook, especially income, could also increase. We may make large-scale investments to enhance our mobile service line-ups in the future. For more discussion on mobile services’ structure, please refer to Item 5.D “Trend Information.”

We anticipate to increase our investment in the bank automated teller machine (“ATM”) operation business by increasing the number of ATMs we place. If our ATM operation business does not proceed as planned, we may lose all or part of our investment in this business which may adversely affect our financial condition and results of operations. For more detailed risks pertaining to our ATM operation business, please refer to the risk described in “Our investments in our subsidiaries and equity method investees may not produce the returns we expect or may affect our results of operations and financial condition adversely.”

13

The size of Japanese domestic economy is expected to be limited, though its IT investment should continue to increase, over the long run mainly due to the declining Japanese population and along with that many Japanese companies heading overseas to seek opportunities. Under such circumstances, we have been enhancing our overseas business developments mainly to expand our customer base and to meet the range of Information Technology (“IT”) network needs of our Japanese customers operating abroad since the fiscal year ended March 31, 2012. Revenues from our overseas business for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥5.3 billion, ¥6.4 billion and ¥6.1 billion, respectively. Although our overseas revenue is still relatively small, if, for example, we fail to offer competitive services and solutions, if we fail to develop customer base for our overseas business, if we fail to acquire enough qualified personnel, or if we invest and contract more network capacity and service facilities than we actually need to serve our customers, due, for example, to our lack of experience in operating overseas business, our limited brand recognition overseas, and change in our domestic customers’ overseas business expansion strategy and refrain from operating overseas business, we may not be able to achieve our expected levels of revenues and profits. Overseas business expansion may impact our domestic business if, for example, we assign many engineers and other resources for our overseas business that our domestic business is left with insufficient resources to complete projects. Overseas business operating expenses and costs may increase due, for example, to commencement of cloud computing services, opening of new overseas subsidiaries, increasing employees, and investing in network facilities. Additionally, we may encounter difficulties in planning and managing operations due to unfavorable political or economic factors, such as geopolitical, cultural and religious conflicts, non-compliance with expected business conduct, local regulations and taxation laws, and a lack of adequate infrastructure. Moreover, changes in local regulations, policies, taxation laws, local regulations, business or investment permit approval requirements, foreign exchange controls, or the nationalization of assets or restrictions on the repatriation of returns from foreign investments in major markets and regions may affect our operating results. Also, a failure to maintain adequate controls to comply with regulations such as the U.S. Foreign Corrupt Practices Act (“FCPA”) may harm our reputation and adversely affect our financial results and business operation.

Along with our business expansion, our capital expenditures, our working capital and our interest-bearing liabilities are also increasing. Our bank borrowings (total of short- and long- term borrowings) were ¥9.3 billion, ¥17.8 billion and ¥24.8 billion as of March 31, 2016, 2017, and 2018, respectively. Our capital lease obligations (current and noncurrent) were ¥11.7 billion, ¥15.2 billion and ¥16.6 billion as of March 31, 2016, 2017, and 2018, respectively. Cash and cash equivalents were ¥19.6 billion, ¥22.0 billion and ¥21.4 billion as of March 31, 2016, 2017, and 2018, respectively.

Other than the above, we will continue to invest in the development of new businesses and services to enhance our current businesses and services such as IoT-related business, the content distribution business, the health care business and other businesses. However, there is no assurance that we can achieve the returns or benefits from the development of those businesses and services and this may adversely affect our financial condition and results of operations.

Our investments in our subsidiaries and equity method investees may not produce the returns we expect or may adversely affect our results of operations and financial condition.

In the past, we have invested in our group companies to expand our businesses and generate new businesses. As of June 29, 2018, we have sixteen consolidated subsidiaries and eight equity method investees. The financial performance of our consolidated subsidiaries directly affects our financial condition and results of operations and the financial performance of our equity method investees affects our financial condition and results of operations through our pro rata interest in our equity method investments. There can be no assurance that we will be able to maintain or enhance the value or the performance of such companies in which we have invested in or may invest in the future, or that we will achieve the returns or benefits from these investments. We may consider further reorganization of our group companies and there is no guarantee that we will be able to achieve the benefits that we expect from such reorganization. We may provide additional financial support in the form of loans, additional equity investments, guarantees, or leases in such companies. We may lose all or part of our investment relating to such companies if their value decreases as a result of their financial performance or if they go bankrupt, as in the case of our former equity-method investee, Crosswave Communications Inc. (“Crosswave”) in 2003. If our interests differ from those of other investors in entities over which we do not exercise control, we may not be able to realize synergies with the investees and it may adversely affect our financial condition and results of operations.

14

IIJ’s substantial investment in Crosswave, IIJ’s former equity method investee, became worthless due to Crosswave’s commencement of corporate reorganization proceedings. In August 2003, Crosswave filed a voluntary petition for the commencement of corporate reorganization proceedings in Japan, and as a result of IIJ’s equity method net loss and an impairment loss taken in respect of IIJ’s investment in Crosswave, our net loss for the fiscal year ended March 31, 2003 was ¥15.6 billion, the highest net loss that we have ever experienced.

We established a joint venture, DeCurret, in January 2018 with eighteen Japanese companies. DeCurret plans to launch cryptocurrency exchange and settlement services. DeCurret is our equity method investee based on our 35% ownership into which we have injected a total of ¥1.8 billion in capital as of June 29, 2018. DeCurret’s planned cryptocurrency operations are subject to a significant amount of risk, including but not limited, to the followings:

· uncertainty about the legal and regulatory status of blockchain technology in general and cryptocurrencies in particular, including the application of money-laundering of financial crimes laws to cryptocurrency exchanges and settlement providers;

· uncertainty about the security of blockchain and cryptocurrency exchange and settlement services from hacking, cyberattacks, or bad actors;

· fluctuation in cryptocurrency markets, including potential market manipulation by participants in cryptocurrency markets;

· the ability to appropriately respond in a timely manner to changes in technology;

· uncertainty about the competitive landscape as well as the success in our marketing strategy as increasing number of cryptocurrency exchange service providers emerge;

· the extent to which blockchain technology and cryptocurrencies as a form of payment will maintain or achieve widespread adoption, and which cryptocurrencies will achieve such adoption; and

· changes in regulation or restriction with regards to registration for cryptocurrency exchange and settlement business by the Japanese government. In Japan, in order to operate cryptocurrency related business such as exchange, registration by Japan’s Financial Service Agency is required, and DeCurret has neither received nor fixed timing of such registration as of June 29, 2018.

Adverse consequences arising from any of these risks could harm DeCurret’s brand name and reputation, cause significant decreases in demand for cryptocurrency-related services, or require DeCurret to make large, unexpected expenditures for technological infrastructure or equipment or incur legal fees or pay damages, fees or penalties arising from lawsuits, and regulatory administrative proceedings and/or we may incur unexpected level of equity in net loss if DeCurret fails to achieve anticipated business performance. We may inject additional capital into and/or lend money to DeCurret. These could, in turn, harm our investment in DeCurret and/or harm our brand name and reputation.

We established a joint venture, JOCDN, in December 2016 with fifteen major Japanese broadcasting companies to provide CDN services. JOCDN is our equity method investee based on our 20% ownership into which we have injected a total of ¥0.1 billion in capital as of June 29, 2018. If JOCDN cannot achieve our expected levels of revenues and profits, manage costs and expenses in a timely and adequate manner or incur unexpected expenses, it may adversely affect our financial condition and results of operations.

15

IIJ Global Solutions Inc. (“IIJ-Global”), which became our 100% owned consolidated subsidiary on September 1, 2010 after acquiring its stock from AT&T Japan LLC (“AT&T Japan”) for ¥9.2 billion, mainly provides WAN services. For the fiscal years ended March 31, 2017 and 2018, IIJ-Global had ¥28.0 billion and ¥29.0 billion in revenues, respectively, and ¥0.6 billion and ¥0.5 billion in operating income, respectively. If IIJ-Global cannot achieve our expected levels of revenues and profits, manage costs and expenses in a timely and adequate manner or incurs unexpected expenses, it may adversely affect our financial condition and results of operations. Intangible assets as of March 31, 2018 related to IIJ-Global were ¥3.8 billion, and if our network service division and/or IIJ-Global cannot achieve its future expected revenue and profit, we may incur a substantial impairment loss on its intangible assets, which may adversely affect our financial condition and results of operations. Related to the acquisition of IIJ-Global, IIJ-Global entered into a Solutions Engagement Agreement with IBM Japan Ltd. (“IBM Japan”), IIJ-Global’s largest sales partner. This agreement, which establishes the basis for a procurement relationship between IIJ-Global and IBM Japan, contains an indemnification for IIJ-Global to perform services, functions, responsibilities and other actions in the same way as when the company was a part of AT&T Japan. Failure to perform in this manner may adversely affect our financial condition and results of operations. Furthermore, IIJ-Global and the Company may damage their relationship with IBM Japan, which may indirectly have an adverse impact on our financial condition and results of operations.

Trust Networks Inc. (“Trust Networks”), IIJ's consolidated subsidiary which was established in July 2007, is in charge of the ATM operation business. Trust Networks operates ATMs and the related network systems and receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. As of March 31, 2018, 1,096 ATMs were placed in locations such as Japanese pinball shops (“pachinko parlors”). As of March 31, 2018, IIJ has invested a total of ¥2.6 billion in Trust Networks (79.5% share ownership). For the fiscal years ended March 31, 2017 and 2018, the ATM operation business had ¥4.1 billion and ¥4.0 billion in revenues, respectively, and ¥1.4 billion and ¥1.5 billion in operating income, respectively. If Trust Networks is not able to introduce ATMs in accordance with its plan due, for example, to a longer than expected negotiation period with interested parties including banks, if it does not record ATM withdrawal transactions as anticipated due, for example, to a decrease in the number of pinball players as a result of a declining Japanese population or a decrease in consumer demand prompted by an increase in the Japanese consumption tax rate, if it incurs unexpected additional costs, or if we face unfavorable regulation and/or business condition changes, it may not be able to achieve its future expected revenue and profit, which may adversely affect our financial condition and results of operations. If the number of serviced ATMs increases, our capital expenditures including capitalized leases may increase due to the leasing or purchasing of ATMs.

As of June 29, 2018, we have ten overseas subsidiaries including IIJ America Inc. (“IIJ-America”) and IIJ Europe Limited (“IIJ-Europe”). During the fiscal year ended March 31, 2017, we established subsidiaries in Vietnam, IIJ Global Solutions Vietnam Company Limited (“IIJ-Global Vietnam”), and in Thailand, IIJ (Thailand) Co., Ltd. (“IIJ-Thailand”), which cooperates with Leap Solutions Asia Co., Ltd. in Thailand. In addition to the existing subsidiaries in China, Singapore, Thailand, Indonesia, Vietnam, and Hong Kong, we may establish more subsidiaries in Asia to seek greater business opportunities as the need for IT increases in the region compared to the United States and Europe, where IT-related markets are already established. However, there is no assurance that we will be able to receive the returns we expect from investing due, for example, to our lack of experience in operating businesses in emerging countries, a failure in offering services that meet local needs, shrinking IT needs and changes in the political and diplomatic situation. During the period from the fiscal year ended March 31, 2016 to the fiscal year ended March 31, 2018, IIJ and IIJ-GS together injected capital of ¥1.0 billion in the aggregate to six of our ten overseas subsidiaries. As of March 31, 2018, IIJ and IIJ-GS together lent a total of ¥0.3 billion to four of our overseas subsidiaries. As for our overseas equity method investees, during the period from the fiscal year ended March 31, 2016 to the fiscal year ended March 31, 2018, we injected capital of ¥0.4 billion to our equity method investees. We may continue to inject additional capital into and/or lend money to the existing and/or new affiliated companies.

16

If our systems integration revenues fluctuate or if we fail to execute our systems construction projects in a timely or satisfactory manner, our results of operations and financial condition may be adversely affected.

Systems construction revenues, a one-time revenue that is a part of systems integration revenues, have a tendency to fluctuate from time to time compared to monthly recurring revenues of network services and systems operation and maintenance due to the budget systems in Japan, of which many end in March. If corporate investments decrease, or if we fail to meet customer demands due to a lack of a sufficient number of qualified engineers to execute the projects in a professional manner, corporate customers may put off or stop placing orders with us and we may not be able to record systems construction revenues and operating profit as expected. If we fail to effectively manage and assign our resources such as outsourcing resources, or to execute the projects as contracted, our recognition of revenues may be delayed or lost altogether, we could be held liable for damages or we could be sued, which could have an adverse impact on our reputation, results of operations and financial condition.

Generally, gross margin of systems construction is low compared to that of systems operation and maintenance, and gross margin for large scale systems construction projects may become even lower due, for example, to price competition in acquiring such construction projects. It is more difficult to effectively control systems construction projects as they become larger in scale, and we have seen an increase in the number of large scale systems construction projects in recent years. Our results of operations and financial condition related to systems integration may be adversely affected if, for example, we fail to control costs such as personnel and outsourcing costs or retain adequate personnel for projects, or if we fail to calculate the necessary timeframe or the manpower to complete a project and the costs exceed the payments received from our customers.

We may have an impairment loss as a result of an impairment test on the intangible assets that are recorded related to mergers and acquisitions.

As of March 31, 2018, the total balance of our intangible assets was approximately ¥8.8 billion, of which ¥6.1 billion was intangible assets not subject to amortization such as goodwill and ¥2.7 billion was intangible assets subject to amortization such as customer relationships. Intangible assets in relation to IIJ-Global and IIJ Technology Inc. (“IIJ-Tech”), former subsidiaries of IIJ, were ¥3.8 billion and ¥3.9 billion, respectively, as of March 31, 2018. The amount of our intangible assets may increase if we conduct mergers, acquisitions or investments in affiliates in the future. We conduct impairment testing of goodwill and indefinite-lived intangible assets annually on March 31 or more frequently if events or changes in circumstances indicate that an asset might be impaired. We conduct impairment testing of definite-lived intangible assets whenever events or changes in circumstances indicate that the assets might be impaired. If the business operations are adversely affected by factors such as significant adverse changes in their business climate and others, we may have an impairment loss as a result of an impairment test on intangible assets. The recognition of any impairment losses on intangible assets may result in material adverse effects on our financial condition and results of operations.

17

If we fail to attract and retain qualified personnel, we may not be able to achieve our expected business growth.

Our network, services, products and technologies are complex, and as a result, we depend heavily on the continued service of our engineering, research and development, and other personnel, and, as our business grows, we need to hire more of such employees. In particular, in order to continue to increase our revenues from outsourcing services and systems integration, we require more sales and engineering personnel. We are not sure whether we will be able to retain or attract such personnel and control human resources costs adequately. Competition for hiring qualified engineering, research and development personnel is intense in the IT service industry in Japan, and there is a limited number of personnel with the necessary knowledge and experience we require. None of our employees are bound by any employment or noncompetition agreements. The realization of any or all of these risks may result in a failure to achieve our expected business growth.

Our business may be adversely affected if our network suffers interruptions, errors or delays.

Interruptions, errors or delays with respect to our backbone network or service facilities may be caused by human errors, interruptions, errors or delays with carriers’ service facility, or natural factors, many of which are beyond our control, including, but not limited to, damage from fire, earthquakes or other natural disasters, power loss, sabotage, computer hackers, cyber-attack, human error, computer viruses, and other similar events.

Much of our computer, networking equipment, and the lines that make up our backbone network are concentrated in a few locations that are in earthquake-prone areas. Any disruption, outages, delays, or other difficulties experienced by any of our technological and information systems and networks could result in a decrease in new or existing accounts, loss or exposure of confidential information, reduction in revenues and profits, costly repairs or upgrades, reputational damage, and decreased consumer and corporate customer trust in our business, any or all of which could have a material adverse effect on our business, financial condition, and results of operations.

Should we experience further unforeseeable incidents such as the disruption of social infrastructure or power shortages and other impacts due to inoperable or damaged nuclear power plants, our backbone network and service facilities could fail and, as a result, we may suffer direct and indirect damages, which may adversely affect our financial condition and results of operations.

We rely heavily on the security of our internal IT systems. Moreover, as a comprehensive network service provider, we offer services and/or construct systems to protect some portion of the IT systems of our clients from cyberattacks, information leaks and other unfavorable incidents. We are required to continuously evaluate and enhance our security measures, including systems designed to block unauthorized access, and have made expenditures for these purposes in recent years. We have not had significant cybersecurity incidents, but if we fail to protect our service facilities and our clients, the credibility of our network and customer satisfaction could decrease significantly, although we are continuously enhancing security measures including systems to block unauthorized access.

If we fail to keep and manage our confidential customer information, we could be subject to lawsuits, incur expenses associated with our security systems, or suffer damage to our reputation.

We keep and manage confidential information and trade secrets obtained from our customers. We exercise much care in protecting the confidentiality of such obtained information and take steps to ensure the security of our network, in accordance with the Personalized Information Protection Law protecting personal information that came into effect in April 2005 and the requirements set by the MIC, and the Ministry of Economy, Trade and Industry. In October 2016, IIJ-Europe submitted its Binding Corporate Rules (BCR) to the UK’s Information Commissioner’s Office (which has yet to complete its examination of the BCR) and in preparation for a new regulation governing data protection, the General Data Protection Regulation (“GDPR”), which became effective in the European Union (“EU”) on May 25, 2018. The submitted internal rules define the global policy regarding personal data protection within the IIJ Group. These rules confirm that the IIJ Group complies with the applicable and prospective EU data protection rules. If we fail to comply with the GDPR unintentionally and are asked to pay a penalty, then this could ultimately result in an adverse effect on our business, financial condition, and results of operations. Our network, like all IT systems, is vulnerable to external attack from computer viruses, hackers, cyber-attack, or other such sources. In addition, despite internal controls, misconduct by an employee could result in the improper use or disclosure of confidential information. If any material leak of such information were to occur, we could be subject to lawsuits for damages from our customers, incur expenses associated with repairing or upgrading our security systems, and suffer damages to our reputation that could result in a severe decline in new customers as well as an increase in service cancellations. As our consumer mobile business grows, we are dealing with an increasing number of consumers. Our corporate image and credibility could be negatively impacted, if, for example, we or our sales partners fail to comply with related laws such as consumer-protection laws, or if we fail to securely protect our consumers’ individual information. Such failure could ultimately result in an adverse effect on our business, financial condition and results of operations.

18

Business growth and a rapidly changing operating environment may strain our limited resources.

We have limited operational, administrative and financial resources which could be inadequate to sustain the growth we want to achieve. As the number of our customers and their Internet usage increases, as traffic patterns change, as the volume of information transferred increases, and as the need for our cloud computing-related service increases, we will need to increase expenditures for our network and other facilities, including data center facilities in the future, in order to adapt our services and to maintain and improve the quality of our services. If we are unable to manage our growth and expansion adequately, the quality of our services could deteriorate and our business may suffer. If data center facilities do not meet our expectations, the quality of our service could deteriorate and our business may suffer. We may also need to increase office rent expenditures along with our business expansion. If we are unable to prepare our network and other facilities in a timely manner to meet our customers’ demand or our business expansion, we may miss growth opportunities or may be obliged to bear higher costs to prepare our network and other facilities.

If we fail to keep up with the rapid technological changes in our industry, our services may become obsolete and we may lose customers.

Our markets are characterized by, but not limited to:

· rapid technological changes, including the shift to new technology-based networks such as IPv6, cloud computing, Software Defined Network (“SDN”), Network Functions Virtualization (“NFV”), IoT, and Big Data,

· frequent new product and service introductions,

· continually changing customer requirements, and

· evolving industry standards.

If we fail to obtain access to new or important technologies or to develop and introduce new services and enhancements that are compatible with changing industry technologies and standards and customer requirements, we may lose customers.

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Our pursuit of necessary technological advances may require substantial time and expense. Many of our competitors have greater financial and other resources than we do and, therefore, may be more equipped to meet the time and expense demands of achieving technological advances. Additionally, this may allow our competitors to respond more quickly to new and emerging technologies and standards or invest more heavily in upgrading or replacing equipment to take advantage of new technologies and standards.

We depend on our executive officers, and if we lose the service of our executive officers, our business and our relationships with our customers, major shareholders of IIJ and other IIJ Group companies and our employees could suffer.

Our future success depends on the continued service of our executive officers, particularly Mr. Koichi Suzuki, who is a founder, Chairman, Chief Executive Officer and representative director of IIJ and Mr. Eijiro Katsu, who is President, Chief Operating Officer and representative director. We rely in particular on their expertise in the operation of our businesses and on their relationships with the shareholders of IIJ, our customers, our business partners, and our employees. None of our executive officers, including Mr. Suzuki and Mr. Katsu, are bound by an employment or noncompetition agreement.

We may continuously pursue mergers and acquisitions transactions which may not be effective.

We recognize that it is important for us to have more business resources such as, but not limited to, human resources, customer base, application layer technology, and others, in the middle term. We may continuously pursue mergers and acquisitions transactions to scale up our business. The mergers and acquisitions transactions may not always be on good terms and conditions, bear the results we expect, or have synergistic effect, and we may incur a large loss of goodwill. We may also exhaust time and our resources through mergers and acquisitions.

As a result, those transactions may strain our financial resources and may adversely affect our financial condition and results of operations or we will not be able to have enough business resources to scale up due to a failure to engage in adequate mergers and acquisitions transactions.

Fluctuations in the stock prices of companies or losses on companies in which we have invested may adversely affect our financial condition.

We have invested in non-affiliated companies in order to further expand our business relationships with those companies. We have also invested in available-for-sale equity securities and in funds which invest mainly in unlisted stocks. The carrying amount of available-for-sale securities was ¥9.3 billion, nonmarketable equity securities was ¥1.0 billion, and investments in funds was ¥1.1 billion as of March 31, 2018. Until the end of the fiscal year ended March 31, 2018, available-for sale equity securities were tested for other-than temporary impairment under U.S. GAAP, with impairment losses of ¥31 million recorded for the fiscal year ended March 31, 2017. Unrealized gains on holding available-for-sale equity securities of ¥7.5 billion were measured based on closing prices of March 30, 2018, the final day of trading in the fiscal year ended March 31, 2018. Due to the revision to U.S. GAAP relating to available-for-sale equity securities, the net of tax amount of unrealized gains of ¥5.1 billion were reclassified to retained earnings at the beginning of the fiscal year ending March 31, 2019. Changes in unrealized gains or losses due to fluctuations of stock prices will be recognized in other income (expenses) in every quarter, beginning with our consolidated statements of income from the first quarter of the fiscal year ending March 31, 2019. Therefore, fluctuations of stock prices may impact our consolidated statements of income. In addition, should we choose to sell all or a portion of these securities or funds, it is not certain that we will be able to do so on favorable terms.

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NTT, IIJ's largest shareholder, could exercise substantial influence over us in a manner which may not necessarily be in our interest or that of our other shareholders.

NTT and its affiliates owned 26.9% of IIJ's outstanding voting shares as of March 31, 2018. As IIJ's largest shareholder, NTT may be able to exercise substantial influence over us. As of June 29, 2018, IIJ has 13 directors including five outside directors among whom Shinobu Umino worked for NTT until 2002. While we intend to conduct our day-to-day operations independently from NTT and its affiliate companies and believe that NTT also plans for us to operate independently, NTT may decide to exercise substantial influence over us in a manner which could impair our ability to operate independently. Furthermore, NTT may take actions that are in its best interest, which may not be in our interest or that of our other shareholders.

We rely greatly on other telecommunications carriers and other suppliers, and could be affected by disruptions in service or delays in the delivery of their products and services.

We rely on telecommunications carriers such as NTT Communications and KDDI for a significant portion of our network backbone, Nippon Telegraph and Telephone East Corporation (“NTT East”), Nippon Telegraph Telephone West Corporation (“NTT West”), and KDDI for local access lines for our customers, and NTT Docomo and KDDI for mobile connectivity as an MVNO. We procure significant portions of our network backbone and data center facilities pursuant to operating lease agreements with NTT Group, our largest provider of network infrastructure. For the fiscal year ended March 31, 2018, we have spent ¥35.2 billion in the aggregate for international and domestic backbone, local access lines, mobile connectivity, and lines for WAN services to NTT Group. Also, as of March 31, 2018, we had ¥3.1 billion of lease obligations with NTT FINANCE CORPORATION (“NTT FINANCE”). We are subject to potential disruptions in these telecommunications services and, in the event of such disruption, we may have no means of replacing these services, on a timely basis or at all.

We also depend on third-party suppliers of hardware components such as routers, servers, and software that are used in our network. We purchase certain components from limited sources, typically from Cisco Systems, Inc. (“Cisco”), Juniper Networks, Inc. (“Juniper”), Hewlett-Packard Company, IBM Japan, NEC, Fujitsu and VMware Inc. A failure by one of our suppliers to deliver quality products on a timely basis, or the inability to develop alternative sources if and as required, may delay our ability to expand the capacity and scope of our network.

Any problems experienced by our telecommunications carriers and other suppliers could have a material adverse effect on our business, financial condition, and results of operations.

Regulatory matters and new legislation could impact our ability to conduct our business.

The licensing, construction, and operation of telecommunications systems and services in Japan are subject to regulation and supervision by the MIC. We operate pursuant to licenses and approvals that have been granted by the MIC.

Our licenses have an unlimited duration, but are subject to revocation by the MIC if we violate any telecommunications laws and regulations in a manner that is deemed to harm the public interest, if we or any of our directors are sentenced to a fine or any more severe penalty under the telecommunications laws, if we employ a director who was previously sentenced to a fine or more severe penalty thereunder, or if we have had a license revoked in the past.

Existing and future governmental regulation may substantially affect the way in which we conduct our business. These regulations may increase the cost of doing business or may restrict the way in which we offer products and services. We cannot predict future regulatory changes which may affect our business. Any changes in laws, such as those described above, or regulations or MIC policy affecting our business activities and those of our competitors could adversely affect our financial condition or results of operations. For more information, see Item 4. “Business Overview — Regulation of the Telecommunications Industry in Japan.”

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We may be named as defendants in litigation, which could have an adverse impact on our business, financial condition, and results of operations.

We are involved in normal claims and other legal proceedings in the ordinary course of our business. We believe that there are no cases currently pending which would have a significant financial impact on us, but we cannot be certain that we will not be named as a defendant in a future lawsuit. Any judgment against us in such a lawsuit, or in any future legal proceeding, could have an adverse effect on our business, financial condition, and results of operations.

In the event that we need to raise capital, we may issue additional shares of IIJ's common stock or securities convertible into IIJ's common stock, which may cause shareholders to incur substantial dilution.

IIJ issued 4,700,000 new shares of common stock by way of a public offering in July 2013 and 700,000 new shares by way of a third-party allotment in connection with a secondary offering of shares by way of an over-allotment in August 2013. For future strategic mergers and acquisitions transactions and/or large scale business investments, we may choose to raise additional funds from the issuance of equity shares of IIJ’s common stock or securities convertible into IIJ’s common stock, in which case existing shareholders may incur substantial dilution.

Prior to the above public offering, IIJ issued 2,500,000 new shares of IIJ's common stock along with IIJ's listing on the Mothers market of the Tokyo Stock Exchange (“TSE”) in December 2005. On May 11, 2007, IIJ issued 435,600 shares of common stock to make IIJ's two consolidated subsidiaries wholly-owned through share exchanges. The above figures are retroactively adjusted to reflect the 1:5 stock split in October 2005 and the 1:200 stock split in October 2012.

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Item 4. Information on the Company

A. History and Development of the Company

IIJ is incorporated under the Corporation Law of Japan as a joint stock corporation under the name Internet Initiative Japan Inc. IIJ was incorporated in December 1992 and operates under the laws of Japan.

IIJ began its operations in July 1993 as one of the first commercial Internet service providers (“ISP”) in Japan to offer Internet connectivity services for both enterprises and consumers. With the emergence of many other commercial ISPs, price competition for Internet connectivity services became severe. Rather than falling into price competition, we strategically shifted our business model towards providing value-added total network solutions to enterprise businesses that tend to choose quality and reliability over price, by fully leveraging our engineering skills to differentiate ourselves from our competitors. Currently, our main business focuses on providing Internet connectivity services, WAN services, outsourcing services, systems integration, and equipment sales as total network solutions to mainly Japanese corporate clients and governmental organizations. The Group works closely together as a group in providing total network solutions directly to its customers. With our expertise in Internet related technology, our revenues have been expanding along with our customers’ needs for broader bandwidth for Internet connectivity services and for professional IT support for their network systems.

For descriptions and the history of the Group, see “Our Group Companies” in Item 4.B.

IIJ became a public company in August 1999 with IIJ's initial public offering of ADSs on the NASDAQ National Market. On December 2, 2005, IIJ listed on the Mothers market of the TSE. On December 14, 2006, IIJ moved to the First Section of the TSE for IIJ's listing in Japan. On October 1, 2012, IIJ conducted a 1 to 200 split of IIJ's shares of common stock and the total number of IIJ's issued shares of common stock increased to 41,295,600. IIJ issued 4,700,000 new shares of IIJ’s common stock by way of a public offering in July 2013 and 700,000 new shares by way of a third-party allotment in connection with a secondary offering of shares by way of an over-allotment in August 2013.

As for major business combinations, on May 11, 2007, IIJ made IIJ-Tech and Net Care, Inc. (“Netcare”) our 100% owned consolidated subsidiaries through share exchanges. Netcare renamed itself to IIJ Engineering Inc. (“IIJ-EG”) in October 2014. We merged IIJ-Tech on April 1, 2010. On September 1, 2010, IIJ made IIJ-Global its 100% owned consolidated subsidiary by acquiring the stock of IIJ-Global from AT&T Japan for ¥9.2 billion by our own cash and bank borrowings.

Please also see Note 2 “Business Combination and Transfer” to our consolidated financial statements included in this annual report on Form-20F.

IIJ's head office is located at Iidabashi Grand Bloom, 2-10-2 Fujimi, Chiyoda-ku, Tokyo 102-0071, Japan, and IIJ's telephone number at that location is +81-3-5205-6500. IIJ's agent in the United States is IIJ-America, located at 55 East 59th Street, Suite 18C New York, NY 10022 and the telephone number at that location is (212) 440-8080. IIJ has a website that you may access at http://www.iij.ad.jp/en/. Information contained on IIJ's website does not constitute part of this annual report on Form 20-F.

For a discussion of capital expenditures and divestitures currently in progress and those for the past three years, see “Capital Expenditures” in Item 4.B.

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B. Business Overview

The Group offers a comprehensive range of Internet connectivity services, WAN services, outsourcing services, systems integration, and equipment sales to our customers mainly in Japan. We believe we provide efficient and reliable services and solutions to our customers on one of the most reliable Internet backbone networks available in Japan. Our services are based upon high-quality Internet related networking technology tailored to meet specific needs and demands of our customers.

Our Internet connectivity services include full-spec IP services with bandwidth ranging from 64 kbps up to over 10 Gbps, low-cost broadband services such as optical and/or ADSL lines which are mainly used to connect branch offices, and mobile data communications services for enterprise and consumers. Our WAN services provide closed-network services, mainly operated by IIJ-Global. Our outsourcing services include security-related outsourcing services that protect our customer network systems from unauthorized access and secure remote connections to internal networks, network-related outsourcing services such as router rental and Virtual Private Network (“VPN”), server-related outsourcing services such as web server hosting and e-mail security service, data center-related outsourcing services, and our public cloud computing service IIJ GIO/Hosting Package and IIJ GIO P2 Public Resource. Our systems integration includes systems construction and systems operation and maintenance. Systems construction is tailored to meet each of our customers’ requirements, which include consulting, project planning, systems design and development of network systems, and sales of equipment and software purchased from third parties. Systems operation and maintenance revenues include system related maintenance, monitoring, and other operating services, and our private cloud computing services such as IIJ GIO/Component and IIJ GIO P2 Private Resource. We aim to be the leading supplier of total network solutions in Japan.

We started to provide our mobile access services for enterprise as an MVNO in January 2008. From February 2012, we also started to offer our mobile services to consumers which became popular in recent years because of their cost-effectiveness; accordingly, mobile services for consumers are one of our strong growth drivers.

From December 2009, we began proving our cloud computing services under the service name “IIJ GIO.” We invest in infrastructures, such as servers, network equipment, virtualization software, and data center facilities for IIJ GIO, and provide them to users as an Infrastructure as a Service (“IaaS”) platform service for a monthly fee, basically. At the beginning, IIJ GIO consisted mainly of two types, (1) IIJ GIO/Hosting Package and (2) IIJ GIO/Component. IIJ GIO/Hosting Package is a line-up of services for an all-in-one non-customizable packaged cloud computing service and IIJ GIO/Component is a line-up of services for a semi-customizable cloud computing service. The cloud computing service in Japan is still in its start-up phase and it is anticipated that the market in Japan should grow in the middle term. In November 2015, we launched a new service platform “IIJ GIO Infrastructure P2” for our cloud services. The service provides reliable public cloud infrastructure with increased processing performance as well as private cloud infrastructure.

As of June 29, 2018, we have ten overseas subsidiaries in the United States, the United Kingdom, Germany, China, Singapore, Hong Kong, Thailand, Indonesia, and Vietnam. We have been enhancing our overseas business primarily to fulfill the broad range of IT network related needs of our Japanese customers who are headed abroad to expand their overseas business. As of June 29, 2018, we provide cloud computing services in the United States, the United Kingdom, China, Singapore, Indonesia, Thailand and Vietnam.

In addition, we conduct our ATM operation business through our consolidated subsidiary, Trust Networks, which was established in July 2007. Trust Networks operates ATMs and ATM network systems and receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. As of March 31, 2018, 1,096 ATMs were placed.

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Currently, we have two business segments: a network services and systems integration business segment and an ATM operation business segment. Our network services and systems integration business segment is comprised of Internet connectivity services for enterprise and consumers, WAN services, outsourcing services, systems integration, and equipment sales.

The table below provides a breakdown of the total revenues and percentage by service over the past three fiscal years. Most of our revenues are generated in Japan and are denominated in Japanese yen.

	For the fiscal year ended March 31 (millions of yen, except for percentage data)
	2016				2017				2018
Internet connectivity services	¥	32,853	23.4	%	¥	44,369	28.1	%	¥	52,705	29.9	%
WAN services		25,177	17.9			26,460	16.8			29,295	16.7
Outsourcing services		21,266	15.1			22,167	14.0			26,119	14.8
Systems construction		21,145	15.0			22,626	14.3			22,528	12.8
Systems operation and maintenance		33,043	23.5			35,123	22.3			37,903	21.5
Equipment sales		3,275	2.3			2,994	1.9			3,470	2.0
ATM operation business		3,889	2.8			4,050	2.6			4,031	2.3
Total revenues:	¥	140,648	100.0	%	¥	157,789	100.0	%	¥	176,051	100.0	%

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Internet Connectivity Services

We offer two categories of Internet connectivity services: Internet connectivity services for enterprise and Internet connectivity services for consumers. Internet connectivity services for enterprise are based on dedicated local-line connections and high-speed wireless data connections provided by telecommunications carriers between our backbone and customers. Internet connectivity services for consumers mainly require customers to connect to our points of presence (“POPs”) through the publicly-switched telephone network or a variety of broadband access services, such as ADSL and optical lines as well as wireless mobile data communications. High-speed, high-capacity last-one mile access such as dedicated access, ADSL, fiber optic, Ethernet, 3G mobile, LTE mobile, and others are provided by large telecommunications carriers such as NTT East, NTT West, NTT Docomo, and others. A variety of choices for last-one mile access are provided to our customers independently or together with other network solution line-ups to fulfill their specific and individual needs for tailored total network solutions. The following table shows the number of our Internet connectivity service contracts as of the dates indicated:

	As of March 31,
	2014		2015		2016		2017		2018
Internet connectivity services (enterprise):
IP Service (1Gbps –)		271		340		367		437		468
IP Service (100Mbps – 999Mbps)		448		504		532		591		658
IP Service (-99Mbps)		847		763		690		658		614
IIJ Data Center Connectivity Service		288		278		270		253		241
IIJ FiberAccess/F and IIJ DSL/F (broadband services)		56,384		62,926		75,932		72,605		72,630
IIJ Mobile Service (enterprise)		127,057		187,429		431,030		857,903		1,339,586
IIJ Mobile MVNO Platform Service		32,253		67,434		250,757		582,250		824,731
Others		1,293		1,309		1,246		1,049		585
Total Internet connectivity service (enterprise) subscriptions		186,588		253,549		510,067		933,496		1,414,782
Internet connectivity services (consumer):
IIJ		468,344		734,311		1,084,295		1,275,875		1,363,531
IIJmio Mobile Service		181,439		430,253		747,395		951,249		1,005,092
hi-ho		158,233		157,208		146,305		133,384		―
Total Internet connectivity service (consumer) subscriptions		626,577		891,519		1,230,600		1,409,259		1,363,531

_____________________

*1.	Numbers in the table show number of contracts except for “IIJ Mobile service,” “IIJ,” and “hi-ho” which show number of subscriptions.
*2.	From Form 20-F for the fiscal year ended March 31, 2017, the following changes are made to the table:
	(1)	The number of subscriptions for “IIJ Mobile MVNO Platform Service”, which was included in “IIJ Mobile service (Enterprise),” is disclosed.
	(2)	The number of subscriptions for “IIJmio Mobile Service” (formerly known as “IIJmio High Speed Mobile Service”), which was included in “Internet connectivity services (consumer)” provided by IIJ, is disclosed.
*3.	On December 31, 2017, we sold all the shares of common stock of our wholly-owned subsidiary hi-ho. Accordingly, hi-ho’s subscription for “Internet connectivity services (consumer)” decreased to zero, hi-ho’s mobile service subscriptions of 14,735 was reclassed to “IIJ Mobile MVNO Platform Service” and a part of hi-ho’s subscriptions (other than mobile service subscription) of 47,683 is included in our subscriptions for “Internet connectivity services (consumer)” on December 31, 2017.

Internet Connectivity Services for Enterprise

Our lineup of Internet connectivity services for enterprise includes: IP service, IIJ data center connectivity service, IIJ FiberAccess/F and IIJ DSL/F (broadband services), dial-up services, and IIJ mobile service.

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IP Service and IIJ Data Center Connectivity Service. Our IP service and data center connectivity service are full-scale, high-speed internet access services that connect the customer’s network to our backbone with dedicated access lines. The services are used mainly for corporate headquarters or data centers, where reliable network service is indispensable. The customer chooses the level of service it needs based upon its bandwidth requirements. We currently offer service at speeds ranging from 64kbps to over 10Gbps. Subscribers pay a monthly fee for the leased local access line from the customer’s location to one of our POPs. The amount of this fee varies depending on the carrier, the distance between the customer’s site and our POPs and its contracted bandwidth. We collect the local access fee from the customer and pay the amount to the carrier. While we prepare and arrange the leased access lines on behalf of customers under our name, the usage fee collected from the customer and paid to the carriers is recorded gross in our consolidated financial statements. For our IP service, we offer Service Level Agreements (“SLA”) to our customers to better define the quality of services our customers receive. We were the first ISP in Japan to introduce this type of agreement. We are able to offer these SLA due to our high quality and reliable network. Our SLA provides customers with credit against the amount invoiced for the services if our service quality fails to meet the prescribed standards. Subscribers to our IP Service receive technical support 24 hours a day and seven days a week. We guarantee the performance of the following elements under our SLA:

· 100% availability of our network,

· the maximum average latency, or time necessary to transmit a signal, between designated POPs, and

· prompt notification of outages and/or disruptions.

We believe that business customers will continue to increase their use of the Internet and increasingly rely on the Internet as a business tool.

IIJ FiberAccess/F and IIJ DSL/F (Broadband Services). IIJ FiberAccess/F and IIJ DSL/F are broadband Internet connectivity services that use “FLET’S” services for fiber optic access and ADSL access provided by NTT East, NTT West, and others, allowing service on a best-efforts basis. The services are used mainly to connect branch offices and headquarters. We support this service by providing guarantees of latency rates under SLA.

IIJ Mobile Service. This service provides wireless 3G and LTE Internet connectivity services to enterprise customers as an MVNO. We use the wireless networks of NTT Docomo and KDDI, which we added to our service-lineups from April 2015. We offer mobile services based on our MVNO infrastructure to meet corporate customers’ needs. Such needs include remote access solutions, which are wireless solutions that allow employees working outside of an office to access work-related files, and other needs including M2M connectivity and MVNO platform services.

Dial-up Access Services. We offer a variety of dial-up access services. Our dial-up services allow employees that are out of the office or frequent travelers to access the Internet or their own internal networks through one of our POPs or through our roaming access points. When accessing their internal network, for security purposes, it is usually accessed using the VPN function that is provided by our outsourcing services or systems integration.

Other Internet Connectivity Services. In addition to the services mentioned above, we also offer services such as IIJ ISDN/F which provides Internet access for ISDN lines, IIJ Line Management/F service that procures “FLET'S” services on behalf of customers and “LaIT” (pronounced “light”) service, a brand that offers high-quality services at reasonable prices to small and medium enterprises. The main sales channels for LaIT are through direct sales via online sign-up or through sales partners.

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Internet Connectivity Services for Consumers

We offer internet connectivity services for consumers under the brand names IIJmio. We also offer OEM services for other network operators. For Internet connectivity services, there are a variety of different service line-ups depending on the type of local access, such as ADSL, fiber optic, WiMAX, 3G, and LTE wireless data communication.

In February 2012, we launched LTE mobile data communications services for consumers in which we offer inexpensive LTE SIM cards to consumers by purchasing NTT Docomo’s mobile infrastructure as an MVNO. We provide the service from the same MVNO infrastructure from which we provide mobile data communications services to enterprises which we launched in January 2008. We mainly offer data communications services in a postpaid scheme with a minimum contract period of one month. The minimum basic monthly charge is ¥900 with bundled high-speed data volume of 3GB which can be shared among up to two SIM cards. The maximum basic monthly charge is ¥2,560 with bundled high-speed data volume of 12GB which can be shared among up to ten SIM cards. As an option, we offer 20GB and 30GB data usage for a monthly charge of ¥3,100 and ¥5,000, respectively. If a customer exceeds the bundled high-speed data volume, the consumer can purchase what we call a “coupon card” which is charged with either 500MB or 2GB high-speed data volume for ¥1,500 and ¥3,000, respectively. We started offering voice function as an optional service with a monthly charge of ¥700 and ¥20 for every 30 seconds for domestic telephone charge from April 2014. We started to accept Mobile Number Portability (“MNP”) transactions from April 2014. We also offer LTE SIM cards through prepaid schemes not only for domestic customers but also for foreigners visiting Japan. “Japan Travel SIM powered by IIJmio” (“JTS”) is the service name and the card includes either 1GB of high speed data for 30 days or 2GB of high-speed data for a three-month period for approximately ¥2,000 and ¥3,500, respectively, depending on the sales channel. From August 2016, we started to offer mobile data communications services for consumers by purchasing KDDI service’s mobile infrastructure.

WAN Services

We offer WAN services, a closed network service mainly using dedicated lines, wide-area Ethernet services, and IP-VPN services to corporate customers. WAN services offer dedicated, reliable, secure connections that allow our customers to better control the traffic over the wide-area networks. While IIJ had been providing WAN services to its corporate customers, the WAN business became a larger portion of the consolidated base business following the acquisition of IIJ Global on September 1, 2010.

Outsourcing Services

Our customers are increasingly seeking additional network-related services, in addition to Internet connectivity. We provide our customers with a broad range of outsourcing services such as security-related, network-related, server-related, data center-related, and public cloud computing services of IIJ GIO/Hosting Package, a line-up of services for an all-in-one non-customizable hosting package cloud computing service, and IIJ GIO P2 Public Resource, higher-performance a line up-of services for public cloud computing services.

We believe that business customers will increasingly rely on outsourcing services for cost reduction, improving productivity, and ensuring reliable network-related operations. Therefore, we will continue our efforts to improve our services by adding new features and enhancing line-ups through new services by utilizing our Internet expertise in a timely manner.

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Our outsourcing services include:

Security-related Outsourcing Services. We offer services that protect customers’ internal network systems from unauthorized, illegal access, such as firewall services and security scan services. We also provide secure remote connections to the internal networks. We were the first ISP in Japan to provide firewall services, which we introduced in 1994. In March, 2017, we started to offer IIJ C-SOC service, which provides one-stop security support for security incident correspondence by implementing a customer-dedicated analysis platform that is linked to our security operation center.

Network-related Outsourcing Services. We offer various types of Internet-VPN services and router rental services such as IIJ Internet-LAN Service, IIJ SMFsx Service and IIJ Managed VPN PRO Service. IIJ SMFsx Service is based on patented technology, the SEIL Management Framework (“SMF”) which enables centralized management of network-configuration, administration and maintenance, reducing both configuration and maintenance time and costs for large-scale network construction.

Server-related Outsourcing Services. We offer services such as web hosting, e-mail hosting, document storage and streaming services.

Data center-related Services. We offer IIJ data center facility services and management and monitoring services. Our Internet data center facility services are co-location services which allow companies to house their servers and routers off-site on our premises. Our Internet data center facilities are leased from third parties such as NTT Communications and are equipped with robust security systems, 24-hours-a-day non-stop power supplies and fire extinguishing systems, earthquake-resistant construction, and high-speed Internet connectivity utilizing IIJ backbones. We also offer basic monitoring and maintenance services for the equipment. This service enhances reliability as we provide 24-hours-a-day monitoring and have specialized maintenance personnel and facilities. We offer management and monitoring services tailored to our customers’ requirements.

Public cloud computing Services. IIJ GIO/Hosting Package, a line-up of services for non-customizable packaged cloud computing service, and IIJ GIO P2 Public Resource, higher-performance a line up-of services for public cloud computing services, are our public cloud computing services name.

Other Services. In addition to the above, we offer customer support and help desk solutions, an IP Phone service, and other services.

Systems Integration

Our systems integration consists of systems construction and systems operation and maintenance. Systems construction is tailored to meet each of our customers’ requirements, which include consulting, project planning, systems design and development of network systems. Our systems construction mainly focuses on Internet business systems and Intranet and Extranet corporate information systems. We have built a strong record in various business fields.

Examples of systems construction are:

· connecting over a hundred locations such as gas stations, bank branches and retail shops via Internet-VPN, transmission of data over the Internet with an encryption feature and our proprietary SEIL Series routers, SMF, SACM⁽¹⁾, and a service adapter "SA-W series,”⁽²⁾

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· construction of large scale e-mail servers or systems to detect or delete e-mails with viruses or spam or record all e-mails incoming to and outgoing from customers,

· construction of websites for online businesses, such as on-line game providers,

· re-construction of overall corporate network systems to accommodate increased traffic data,

· construction of voice-over IP systems to transmit voice to customer branch offices over the Internet,

· construction of wireless local area networks, and

· consultation on corporate network security.

(1) SACM (Service Adapter Control Manager) is a management service platform for OEMs to provide automatic connection and a comprehensive management mechanism of IIJ’s proprietary next-generation network management system, SMFv2.

(2) SA-W series is a service adaptor developed for SACM.

In the consulting and planning phase of a systems construction project, we form special project management teams for the project. We analyze and design the customer’s network and systems with three engineering focuses: reliability, flexibility, and extendibility.

In the phase of systems design and development of network systems, we procure equipment such as servers or use IIJ GIO/Component services or IIJ GIO P2 Private Resource as a component of the system and manage application development and software programming tasks which are, depending on the size of the project, outsourced to third parties. Systems construction is generally provided together with our network services.

In the operation and maintenance phase, by utilizing data center facilities, IIJ GIO/Component services and IIJ GIO P2 Private Resource directly linked to our network, we provide a range of operation and maintenance services, which take maximum advantage of the Internet system, network operation and management know-how of the IIJ Group companies. Rather than simply looking after the customer’s servers and network equipment, we take care of the customer’s entire computing environment, as well as implement custom-designed monitoring systems and provide around-the-clock operation and management services. These outsourcing services enable customers to free themselves from the burden of operating the network systems, which demands professional operation and maintenance to ensure prompt and flexible responses to unexpected system problems.

We develop, provide, and make investment for our own systems construction and software development for a cloud-based foreign exchange (“FX”) platform which we mainly provide to financial institutions such as securities brokers and FX trading companies who pay monthly fees primarily based on the volume of transactions.

We have provided our customers with basic and easy-to-order systems integration services, including provision of network resources such as network equipment, data storage systems, network monitoring, and systems operation management, on demand and on a monthly basis, therefore enabling our customers to launch their internal network system securely and cost effectively.

Equipment Sales

In addition to the network services and systems integration, we sell third-party equipment, such as routers, mobile devices including iPads and other equipment to meet the one-stop needs of our customers together with our in-house developed router, the “SEIL Series.”

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SEIL Series. In August 1998, we introduced our first SEIL Series router, a high-end in-house developed router, which was compatible with ISDN. As of June 29, 2018, IIJ sells SEIL/X1, SEIL/BPV4 and SEIL/x86. With the SMF feature, which provides auto-configuration features, it enables customers to create a VPN network simply by connecting the network to SEIL WAN interface.

ATM Operation Business

Our ATM operation business is conducted by our consolidated subsidiary, Trust Networks, which operates ATMs and related network systems and receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. As of March 31, 2018, 1,096 ATMs were placed in places such as Japanese pachinko parlors.

Network

Our network is one of our most important assets. We have developed and currently operate a high-capacity network that has been designed to provide reliable, high-speed, high-quality Internet connectivity services. Our Internet network extends throughout Japan, and to the United States, the United Kingdom, Singapore, and Hong Kong.

We are able to achieve and maintain high speeds through our advanced network architecture, routing technology and load balancing that optimize traffic on our multiple Internet connections.

The primary components of our network are:

· our backbone, which includes leased lines and network equipment, such as routers,

· POPs in major metropolitan areas in Japan,

· Internet data centers, and

· a network operations center (“NOC”).

Backbone

Leased lines

Our network is anchored by our extensive Internet backbone that extends throughout Japan, and to the United States, the United Kingdom, Singapore, and Hong Kong. We use our expertise in developing and operating our network to organize and connect these leased lines to form a backbone that has substantial transmission capacity. As of June 29, 2018, the total capacity between Japan and the United States was 500Gbps.

The physical lines that comprise our backbone are an assembly of numerous physical lines that are procured from various carriers. The lines which we lease are high-capacity, high-speed digital transmission lines. The topology of the backbone network, in principal, is a mesh topology with redundancy, therefore the connection is secured and IIJ’s service will not be interrupted even if either one of the numerous physical lines fails.

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The table below lists the total number of contracts comprising IIJ’s backbone network as of March 31, 2017 and March 31, 2018. Each contract represents one physical line. The largest contract accounts for only approximately 2.9% of the total contracted amount.

Total Number of Contracts Comprising IIJ's Backbone Network

	As of March 31, 2017		As of March 31, 2018
Number of Contracts comprising IIJ’s backbone network
NTT Group		74		69
KDDI		47		50
Others		45		48
Total		166		167

If IIJ is unable to renew any of its contracts with either of the companies listed above, IIJ can continue with its business by procuring additional physical line services from other telecommunications carriers that offer the best terms or charges in the ordinary course of business. There are over ten additional telecommunications carriers that we can procure physical lines from. A majority of the contracts that comprise IIJ’s backbone network are one-year renewable contracts and IIJ can renew or upgrade its existing contracts or replace them with other telecommunications carrier services if they can be replaced with better terms in the ordinary course of business.

Accordingly, IIJ is not substantially dependent on a particular contract with either NTT or KDDI, nor is the amount of a particular contract substantially large. Further, IIJ is neither substantially dependent on a certain arrangement or relationship with a particular carrier or carriers because IIJ has the ability to replace its existing contracts with others under fair terms.

The table below shows our backbone cost related to leased lines.

Backbone Cost related to Leased Lines

	For the fiscal year ended March 31, (millions of yen)
	2014		2015		2016		2017		2018
Backbone cost	¥	3,762	¥	3,741	¥	3,636	¥	3,414	¥	3,316

Network equipment

We use advanced equipment in our network. Our primary routers in our network are Cisco and Juniper routers. The size of our routers varies depending on the number of customers and volume of traffic served by our POPs. At each POP we connect our dedicated line to Cisco or Juniper backbone routers which then transmit and receive information throughout our network. We primarily lease our network equipment under capital lease arrangements.

Points of Presence

POPs are the main points at which our customers connect to our backbone. We provide Internet connectivity from our POPs to commercial and residential customers through leased lines and dial-up connections over local exchange facilities. As of June 29, 2018, we operate 29 primary POPs for dedicated access and one universal POP for nationwide dial-up access in Japan. The universal POP can be accessed from anywhere in Japan with a minimum local telephone charge.

Many of our POPs are located in the same facilities where other major carriers and ISPs have their POPs, in facilities of various carriers in Japan like NTT Communications and KDDI. We mainly lease the physical space. We maintain our routers and other networking equipment at these POPs. Our POPs are in, or in close proximity to, the same buildings in which the switches and routers of these carriers and ISPs are located enabling quick and easy interconnection of our equipment with theirs.

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Internet Data Centers

As of June 29, 2018, we operate 27 Internet data centers, 21 in Japan and six abroad; seven in Tokyo, three in Osaka, two each in Yokohama, Nagoya, and Fukuoka, and one each in Saitama, Sapporo, Sendai, Kyoto, Matsue, New York, San Jose, Los Angeles, London, Shanghai, and Singapore. These data centers are specifically designed for application hosting, IIJ GIO and IIJ GIO Infrastructure P2 services, co-location services and high capacity access to our networks. Excluding the container-based module type data center in Matsue, our data centers are leased. In Japan, they are mainly leased from NTT Communications, ITOCHU Techno-Solutions Corporation, Mitsubishi Corporation, and KDDI. The container-based module type data center in Matsue is directly owned and operated by us.

These data centers have 24-hours-a-day, seven-days-a-week operations and security and are equipped with uninterruptible power supplies and backup generators, anti-seismic damage precautions, fire suppression equipment, and other features to optimize our ability to offer high-quality services through these data centers.

The container-based module type data center in Matsue is specifically designed for the use of our cloud computing service IIJ GIO which uses outside-air-cooling, a first in Japan. The main features of the Matsue container-based module type data center are its cost efficiency and its short construction period of approximately two to three months to add one container-based module, which allows it to start small and expand along with the rise in demand, unlike building type data centers where you need to build the whole capacity at once regardless of the demand. The second module type data center site in Matsue opened in December 2013 and can host up to 48 container-based modules, 24 container-based modules per site.

Network operations center and technical and customer support

Our NOC in Tokyo operates 24-hours-a-day, seven-days-a-week. From our NOC, we monitor the status of our network, the traffic on the network, the network equipment and components, and many other aspects of our network including our customers’ dedicated access lines leased from carriers. From our NOC, we monitor our networks to ensure that we meet our commitments under our SLA.

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Our Group Companies

We offer our services directly and with our group companies. As of June 29, 2018, we had sixteen consolidated subsidiaries and eight equity method investees. Our group companies work closely together in providing total network solutions to our customers. We collaborate on the development of various services and products and market our services and products together as a group and offer as a group our total network solutions. Our ATM operation business is conducted by Trust Networks.

The table below sets out our group companies, including our major subsidiaries and equity method investees and our direct and indirect ownership of each of them as of March 31, 2018:

Company Name	Jurisdiction of Incorporation		Percentage of ownership
Consolidated Subsidiaries:
IIJ Global Solutions Inc.		Japan		100.0	%
IIJ Engineering Inc.		Japan		100.0	%
Trust Networks Inc.		Japan		79.5	%(1)
IIJ Innovation Institute Inc.		Japan		100.0	%
Net Chart Japan Inc.		Japan		100.0	%
RYUKOSHA NETWARE Inc.		Japan		100.0	%
IIJ America Inc.		U.S.A.		100.0	%
IIJ Europe Limited		U.K.		100.0	%
IIJ Global Solutions China Inc.		China		100.0	%(2)
IIJ Global Solutions Singapore Pte. Ltd.		Singapore		100.0	%(3)
and six other subsidiaries(4)
Equity method investees:
DeCurret Inc.		Japan		35.0	%
INTERNET MULTIFEED CO.		Japan		34.0	%
Trinity Inc.		Japan		33.8	%
Internet Revolution Inc.		Japan		30.0	%
JOCDN Inc.		Japan		20.0	%
PT Biznet Gio Nusantara		Indonesia		40.0	%
Leap Solutions Asia co. Ltd.		Thailand		40.0	%
and one other equity method investee(5)

_____________________

(1) We owned an 80.6% voting interest. The difference is due to the treasury stock owned by Trust Networks Inc.

(2) IIJ Global Solutions China Inc. was a 100% owned subsidiary of IIJ Global Solutions Inc.

(3) IIJ owned a 50.4% voting interest directly and a 49.6% indirectly through IIJ-Global.

(4) The six other subsidiaries were IIJ Deutschland GmbH, IIJ Global Solutions Hong Kong Ltd., IIJ-Global Solutions (Thailand) Co., Ltd., IIJ-Thailand, PT. IIJ Global Solutions Indonesia, and IIJ-Global Vietnam. On December 31, 2017, we sold all the shares of common stock of our wholly-owned subsidiary hi-ho.

(5) The one other equity method investee was KIS, Inc.

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IIJ Global Solutions Inc.

On September 1, 2010, IIJ acquired 100% of the equity of IIJ-Global from AT&T Japan for the amount of ¥9.2 billion. IIJ-Global is incorporated under the laws of Japan. IIJ-Global provides mainly domestic network outsourcing service businesses, such as WAN services. To fulfill the demands of our Japanese clients that are headed abroad to expand their overseas business, together with IIJ, IIJ-Global has been enhancing its business abroad in Asian countries such as China, Singapore and Thailand. As of March 31, 2018, IIJ-Global had 380 employees, 5 of whom were seconded from IIJ.

IIJ Engineering Inc.

IIJ Engineering Inc. (“IIJ-EG”), whose name has been changed from Net Care, Inc. as of October 1, 2014, provides a broad array of support services, from monitoring and troubleshooting to network operations and data center operations. As of March 31, 2018, IIJ-EG had 433 employees, 6 of whom were seconded from IIJ.

Trust Networks Inc.

Trust Networks Inc. (“Trust Networks”) was established in July 2007. Trust Networks operates bank ATMs and its network systems, and receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. As of March 31, 2018, Trust Networks had 1,096 ATMs in operation. As of March 31, 2018, Trust Networks had ten employees, seven of whom were seconded from IIJ.

IIJ Innovation Institute Inc.

IIJ Innovation Institute Inc. (“IIJ-II”) mainly engages in research and development of basic Internet-related technology. On July 1, 2009, IIJ Research Laboratory, one of the research departments of IIJ, was transferred to IIJ-II to strengthen the Group research and development by reclassifying the Group research and development organization. As of March 31, 2018, IIJ-II had 15 employees, all of whom were seconded from IIJ.

Net Chart Japan Inc.

Net Chart Japan Inc. (“NCJ”) provides network construction services that are mainly related to Local Area Networks, such as installation and configuration of equipment, wiring following network installation, and installation and operation support for applications. As of March 31, 2018, NCJ had 90 employees.

RYUKOSHA NETWARE Inc.

RYUKOSHA NETWARE Inc. (“RYUKOSHA”) engages in human resources outsourcing, including systems operation and service support. RYUKOSHA became IIJ’s wholly owned subsidiary as of December 1, 2014. As of March 31, 2018, RYUKOSHA had 313 employees.

IIJ America Inc.

IIJ America Inc. (“IIJ-America”) is a U.S.-based ISP that also provides cloud computing services and offers systems integration solutions, catering primarily to the U.S.-based operations of Japanese companies. As of March 31, 2018, IIJ-America had 44 employees, five of whom were seconded from IIJ.

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IIJ Europe Limited

IIJ Europe Limited (“IIJ-Europe”) offers systems integration, Internet connectivity services, and cloud computing services primarily to Japanese companies operating in Europe. As of March 31, 2018, IIJ-Europe had 50 employees, four of whom were seconded from IIJ.

IIJ Global Solutions China Inc.

IIJ-Global Solutions China Inc. (“IIJ-Global China”) is a China-based systems integrator and cloud computing services provider catering primarily to China-based operations of Japanese companies. As of March 31, 2018, IIJ-Global China had 22 employees.

IIJ Global Solutions Singapore Pte. Ltd.

IIJ-Global Solutions Singapore Pte. Ltd. (“IIJ-Global Singapore”) is a Singapore-based systems integrator and cloud computing services provider catering primarily to Singapore-based operations of Japanese companies. As of March 31, 2018, IIJ-Global Singapore had 14 employees, two of whom were seconded from IIJ.

DeCurret Inc.

In January 2018, we established DeCurret Inc. which is a joint venture with various Japanese companies to provide cryptocurrency exchange and settlement services. As of March 31, 2018, DeCurret is our equity method investee, in which we have a 35.0% ownership interest. The shareholders of DeCurret include Nomura Holdings, Inc., ITOCHU Corporation, East Japan Railway Company, QTnet, Inc., BIC CAMERA INC., K-Opticom Corporation, Mitsui Sumitomo Insurance Company, Limited, Sompo Holdings, Inc., Sumitomo Mitsui Banking Corporation, The Dai-ichi Life Insurance Company, Limited, Mitsui Fudosan Co., Ltd., Daiwa Securities Group Inc., MUFG Bank, Ltd., Tokio Marine & Nichido Fire Insurance Co., Ltd., ITOCHU Techno-Solutions Corporation, Nippon Life Insurance Company, DENTSU INC., and YAMATO HOLDINGS CO., LTD.

INTERNET MULTIFEED CO.

INTERNET MULTIFEED CO. (“Multifeed”) provides high-speed Internet eXchange (“IX” — where major ISPs exchange network traffic) service. Its technology was developed jointly with the NTT Group. Multifeed operates IXs named JPNAP. As of March 31, 2018, Multifeed is our equity method investee, in which we have a 34.0% ownership interest.

Trinity Inc.

Trinity Inc. (“Trinity”) is one of the subsidiaries of Hirata Corporation, which manages customer loyalty reward program systems. As of March 31, 2018, Trinity is our equity method investee, in which we have a 33.8% ownership interest.

Internet Revolution Inc.

In February 2006, IIJ and Konami Corporation established a joint venture company, Internet Revolution Inc. (“i-revo”) initially to operate a portal website. i-revo now provides operation of the gaming platform used by the Konami Group. As of March 31, 2018, i-revo is our equity method investee, in which we have a 30.0% ownership interest.

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JOCDN Inc.

In December 2016, IIJ and Nippon Television Network Corporation, one of the major Japanese broadcasting companies, established a joint venture company, JOCDN to provide a content delivery platform specialized for video distribution within Japan. In April 2017, TV Asahi Holdings Corporation, Tokyo Broadcasting System Holdings, Inc., TV TOKYO Holdings Corporation, Fuji Television Network, Inc., MBS Media Holdings, Inc., Asahi Broadcasting Corporation, Television Osaka, Inc., Kansai Telecasting Corporation, Yomiuri Telecasting Corporation, Tokai Television Broadcasting Co., Ltd., Chukyo TV. Broadcasting Co., Ltd., Chubu-Nippon Broadcasting Co., Ltd., Nagoya Broadcasting Network Co., Ltd., and Aichi Television Broadcasting Co., Ltd., became shareholders of JOCDN. As of March 31, 2018, JOCDN is our equity method investee, in which we have a 20.0% ownership interest.

PT Biznet Gio Nusantara

In January 2015, IIJ and Biznet Networks, a major communications services company in Indonesia, established a joint venture company, PT Biznet Gio Nusantara (“PT Biznet GIO”), to offer public and private cloud computing services mainly to local companies in Indonesia. As of March 31, 2018, PT Biznet GIO is our equity method investee, in which we have a 40.0% ownership interest.

Leap Solutions Asia co. Ltd.

In February 2016, IIJ and T.C.C. Technology Co., Ltd., a leading data center and IT infrastructure service provider in Thailand, established a joint venture company, Leap Solutions Asia co. Ltd., to provide full-scale cloud computing services in Thailand. As of March 31, 2018, Leap Solutions Asia Co. Ltd., is our equity method investee, in which we have a 40.0% ownership interest.

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Capital Expenditures

The table below shows our capital expenditures, which we define as amounts paid for purchases of property and equipment plus acquisition of assets by entering into capital leases, for the last three fiscal years.

	For the fiscal year ended March 31,
	2016		2017		2018
	(millions of yen)
Capital expenditures, including capitalized leases (1)	¥	14,812	¥	16,531	¥	20,828

_____________________

(1) Further information regarding capital expenditures, including capitalized leases and a reconciliation to the most directly comparable U.S. GAAP financial measure, can be found in Item 3.A., “Selected Financial Data— Reconciliations of the Disclosed Non-GAAP Financial Measures to the Most Directly Comparable GAAP Financial Measures.”

Most of our capital expenditures, which are funded largely by cash generated from operations, proceeds from bank borrowings, proceeds from issuance of common stock, and leases, relate primarily to the development, expansion, improvement, and maintenance of our network and service infrastructures and of our own internal back-office systems. The investments are mostly for routers, servers, network equipment, containers for our container type data centers, and other facilities necessary to offer services related to our network and software developments. Capital expenditures for the fiscal year ended March 31, 2018 increased compared with the previous fiscal year mainly because increase in capital expenditures related to cloud computing service and purchase of land for new data center construction.

We estimate that our expected capital expenditures, including capitalized leases, for the fiscal year ending March 31, 2019 related to our network services and systems integration business will be slightly smaller than the amount for the fiscal year ended March 31, 2018. As capital expenditures related to cloud computing service will decrease, expenditures related to data center construction will increase.

Seasonality

See Item 5.D., “Trend Information — Factors Affecting Our Future Financial Results — Systems integration revenues, including related equipment sales revenues.”

Sales and Marketing

Our sales headquarters are located in Tokyo. In addition, we have eight branches, Osaka, Nagoya, Fukuoka, Sapporo, Sendai, Yokohama, Toyama, and Hiroshima and three offices in Niigata, Toyota, and Okinawa in order to cover the major metropolitan areas in which the majority of large Japanese companies operate. As of March 31, 2018, we had 553 employees, on a consolidated basis, working in sales and marketing. The Business Unit, where our domestic sales and marketing employees are assigned, is divided into 13 divisions:

· Enterprise Business Divisions 1 and 2 focus on selling total network solutions and work with large corporate clients, including manufacturers and retail companies.

· Financial Systems Business Division focuses on selling total network solutions and work with financial institutions.

· Government, Public & Educational Organization Business Division focuses on selling total network solutions and works with governmental institutions, universities, and other schools.

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· Global Business Division is in charge of the planning and administration of overseas business development.

· Service Product Business Division focuses on promoting the sales of our focused services such as IIJ GIO and IIJ GIO Infrastructure P2 services, security-related services, IP services, mobile services, and corporate network solutions including IIJ Omnibus Services, and also focuses on enhancing partner business.

· West Japan Business Division focuses on developing and strengthening partnerships with customers in the western Japan area. Sales personnel in branch and sales offices are part of this division.

· Central Japan Business Division focuses on developing and strengthening partnerships with customers in the central Japan area such as Nagoya. Sales personnel in branch and sales offices are part of this division

· East Japan Business Division focuses on developing and strengthening partnerships with customers in the eastern Japan area except for the Kanto area. Sales personnel in branch and sales offices are part of this division.

· Enterprise Business System Development Division 1 and 2 are comprised of pre-sales engineers who focus on meeting specific IT needs of corporations by, for example, integrating network services and systems integration.

· Outsourcing Division focuses on promoting business enterprises to outsource their IT systems by offering needed services and/or operating systems for them.

· Business Unit Management Division is in charge of back-office operations such as those related to processing sales orders for business divisions.

Customers

As of March 31, 2018, we had approximately 11,000 business and other institutional customers which is approximately 10% increase from the previous year end of approximately 10,000 customers. As of March 31, 2018, we had approximately 2.0 million individuals which include individual customers subscribing to our mobile, “IIJ Mobile MVNO-Platform services” under which we provide our mobile services to other consumer MVNOs, and OEM services. Our main customers continue to be major corporations, including ISPs.

Research and Development

Research and Development Organization

Our research and development activities are conducted by IIJ Innovation Institute (“IIJ-II”) and IIJ’s internal organizations in charge of technology.

IIJ Innovation Institute. IIJ established IIJ-II in June 2008 as a wholly-owned subsidiary, which engages in research and development of basic Internet-related technology development. In July 2009, IIJ Research Laboratory, which was established as a research organization of IIJ in April 1998 to engage in new basic network technologies, was transferred to IIJ-II to reorganize and strengthen the Group's research and development capabilities. IIJ-II is currently participating in various research and development activities in cooperation with organizations from the private and academic sectors. IIJ-II is engaged in research and development activities related to cloud computing, network traffic measurement and analysis, the development of operational technology for Internet routing, and Internet security among various other activities.

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IIJ’s internal organizations in charge of technology. IIJ’s internal organizations such as the Service Product Business Division, the Service Infrastructure Division, the Network Division, the Cloud Division, and the MVNO Division, play an important role in the research and development of technologies to be applied to our services and solutions, collect information, evaluate new technology, and conduct business expansion.

Research and Development Strategy

Our primary research and development objective is to continue to develop innovative services, applications, and products that meet the current and future demands of our customers, and to continue to be at the forefront of the Internet industry in Japan. Many of our engineers are regularly engaged in research and development activities related to the development of new services, applications, and products. These engineers have continued to develop innovative services, applications, and products, many of which have set the standard for the Internet industry in Japan. They also work very closely with our sales and marketing personnel and technical engineers to ensure that the innovative services, applications and products will meet the demands of our customers.

Our second research and development objective is to continue participating in or otherwise closely monitor new products, developments, and initiatives of manufacturers and standards-setting and research groups. We have also engaged in the research and development of new Internet-related basic technology since 1998. Through these efforts, we seek to ensure that we have timely and effective access to new technologies, and that we implement these technologies effectively.

In furtherance of these objectives, our research and development efforts currently are focused on a variety of projects, including:

· research and development of the basic technologies for cloud computing-related technology including Software-Defined Networking (“SDN”) and Network Function Virtualization (“NFV”),

· research and development of methodology to solve the technical problems of the current cloud computing systems,

· research and development of the basic technologies for a storage system for a wide area data center operation to enable flexible location and relocation of virtual machines,

· research and development of methodology to construct a virtualized large-scale data center with an assembly of small-scale data centers,

· research and development of electric feeding methodology with high efficiency, and adoption to a next generation container-based module type data center,

· development and commercialization of a cloud-based Power Metering System (PMS) Service Platform, a system platform for providing services that make use of a smart meter,

· research of Internet traffic monitoring and management,

· research relating to the behavior of Internet routing systems,

· research and development of IPv6-based communication technology,

· continuous improvement of our SEIL router (an in-house developed service adaptor) and SMF, systems which we developed specifically to be integrated into IIJ’s network-related services,

· research relating to the methodology of the configuration of routers and other servers, and

· research and development of the Distributed and Parallel Processing Platform for very large data sets.

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Our research and development expenses averaged less than 1.0% of total revenues for the past three consecutive years. For the fiscal years ended March 31, 2016, 2017, and 2018, our research and development expenses were ¥455 million, ¥466 million and ¥487 million, respectively, most of which were for personnel expenses. The level of research and development expenditures is low in relation to our total costs primarily because we do not engage in extensive research and development of new technologies and products that require large investments. Rather, as noted above, we are intensively engaged in research and development related to our ongoing business. We focus on monitoring developments in the industry and in developing new and innovative services and applications by utilizing and enhancing existing technologies and products.

Because the rate of change in technology relevant to our business is so rapid, we believe that the sophistication and experience of our research and development personnel is an important part of our success.

Proprietary Rights

Although we believe that our success is more dependent upon our technical, marketing, and customer service expertise than our proprietary rights, we rely on a combination of trademark and contractual restrictions to establish and protect our technology.

Licenses

For us to provide certain services to our customers, we have, as a licensee, entered into license agreements with suppliers including Trend Micro Incorporated, RSA Security Inc., NRI Secure Technologies, Ltd., McAfee, Inc. (Intel Security), Microsoft Japan Co., Ltd., Adobe Systems Software Ireland Limited, and Oracle Corporation Japan.

We have purchased licenses from these suppliers in accordance with customer demands for our services.

Trademarks

We have applied for trademark registrations of our corporate name, “Internet Initiative Japan Inc.” and certain other corporate and product names in Japan, the United States and certain European and Asian countries.

Patents

We have applied for patent registrations in relation to our technology in Japan and the United States. As of June 29, 2018, eleven registrations had been granted, with two pending applications. The latest acquired patent is for technology to cool telecommunication equipment utilizing the chimney effect in a data center.

Legal Proceedings

We are involved in normal claims and other legal proceedings in the ordinary course of business. We are not involved in any litigation or other legal proceedings that, if determined adversely to us, we believe would individually or in the aggregate have a material adverse effect on us or our operations.

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Regulations of the Telecommunications Industry in Japan

The MIC regulates the Japanese telecommunications industry. Telecommunications carriers, including us, are regulated by the MIC primarily under the Telecommunications Business Law.

The Telecommunications Business Law

The Telecommunications Business Law, which became effective in 1985, was established for the purpose of privatization and deregulation in the telecommunications business. After several amendments, the Telecommunications Business Law was considerably amended in July 2003, and the amended Telecommunications Business Law became effective as of April 2004. Further, an amendment to the Telecommunications Business Law was enacted on June 3rd, 2014 and the amended Telecommunications Business Law became effective on June 1, 2015. From here on, “Telecommunications Business Law” refers to the latest amended Telecommunications Business Law. A summary of the regulations under the current Telecommunications Business Law is as follows:

The Telecommunications Business Law applies to the telecommunications business, except for telecommunications business that is exempted under the Telecommunications Business Law (“Exempted Business”). ⁽¹⁾ The term “telecommunications business” is defined under the Telecommunications Business Law as a business providing telecommunications services in order to meet the demand of others. ⁽²⁾ The term “telecommunications services” is defined under the Telecommunications Business Law as intermediating communications of others through the use of telecommunications facilities, or any other acts of providing telecommunications facilities for the use of communications of others. Our business falls under the definition of a telecommunications business, but not an Exempted Business, and, therefore, is subject to the Telecommunications Business Law.

_____________________

(1) An Exempted Business is a business related to facilities supplying broadcast services, wire radio broadcasting, wire broadcast telephone services, wire television broadcasting services, or the acceptance of applications for the use of cable television broadcasting facilities.

(2) The provisions of this Law shall not apply to the telecommunications businesses listed in the following items:

(i) a telecommunications business which exclusively provides telecommunications services to a single person (except one being a telecommunications carrier);

(ii) a telecommunications business which provides telecommunications services with telecommunications facilities, a part of which is to be established on the same premises (including the areas regarded as the same premises) or in the same building where any other part thereof is also to be established, or with telecommunications facilities which meet the standards stipulated in the ministerial ordinance of the MIC; and

(iii) a telecommunications business which does not install telecommunications circuit facilities but which provides telecommunications services other than the telecommunications services which intermediate communications of others by using telecommunications facilities;

Provided that the provisions of Article 3 and Article 4 of the Telecommunications Business Law apply to communications handled by a person who operates the telecommunications business listed above.

Start-up of Services

· Registration/Notification

Registration with the Minister of the MIC is required for start-up telecommunications businesses that intend to provide telecommunications services. However, for telecommunications businesses which meet either of the following two requirements, only a notification to the Minister of the MIC is required: (i) the scale of the telecommunications circuit facilities which are to be installed and the scope of the area covered thereby do not exceed a certain threshold established by the ministerial ordinance of the MIC (i.e., areas of installation of terminal-related transmission facilities are limited to a single municipality (city, town or village) and areas of installation of relay-related transmission facilities are limited to a single prefecture) or (ii) the telecommunications circuit facilities to be installed fall within a certain category of radio facilities as set forth in the Radio Act (i.e., radio facilities which conduct radio communications (except for basic broadcasting) as well as basic broadcasting). Our business is subject to this latter notification requirement.

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Terms and Conditions of Provision of Services and Charge

· Our business is unregulated, in general, as IIJ does not fall under either Basic Telecommunications Services or Designated Telecommunications Services described below.

· Prior notification to the Minister of the MIC is required for the Basic Telecommunications Services (i.e., universal services specified by the ministerial ordinance of the MIC such as analog or public fixed telephone services, analog or public remote island telephone services, and analog or public emergency call telephone services). Providing these telecommunications services in a manner other than that pursuant to the terms and conditions and charges notified to the Minister of the MIC is prohibited, provided that the charges may be discounted or waived pursuant to the exception criteria provided under the ministerial ordinance of the MIC (i.e., an emergency call for the safety of ships and airplanes, an emergency call for the safety of life and property in case of natural disaster, calls to police agencies regarding crimes, and calls to the fire brigade).

· Prior notification to the Minister of the MIC is required for Designated Telecommunications Services (i.e., services provided through Category I Designated Telecommunications Facilities and which meet the criteria provided by the ministerial ordinance of the MIC as the services for which the guarantee of the terms and conditions and charges are necessary for the protection of users, such as the basic fee). “Category I Designated Telecommunications Facilities” are facilities which meet the criteria specified by the ministerial ordinance of the MIC as being fixed telecommunications facilities used for the services which are offered to a substantial percentage of users in a given area, and which are currently only the facilities of NTT East and NTT West. Providing these telecommunications services in a manner other than that pursuant to the terms and conditions and charges notified to the Minister of the MIC is prohibited, unless the telecommunications carrier and the user agree otherwise, provided that the charges may be discounted or waived in emergency cases, for emergency calls for injured persons in a ship, and for use by a police agency, fire brigade, and broadcasting companies.

· The Minister of the MIC at least once a year notifies the telecommunications carrier providing the Specific Designated Telecommunications Services specified by the ministerial ordinance of the MIC (i.e., Designated Telecommunications Services other than voice services, except for telephone and general digital services and data transmission services) the price cap regarding such services. The telecommunications carriers are required to obtain approval from the Minister of the MIC if a proposed change in charges exceeds the price cap.

Articles of Interconnection Agreements

· Our business is unregulated, in general, as IIJ does not fall under either Category I Designated Telecommunications Facilities, described above, or Category II Designated Telecommunications Facilities described below.

· Approval from the Minister of the MIC is required for Category I Designated Telecommunications Facilities.

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· Prior notification to the Minister of the MIC is required for Category II Designated Telecommunications Facilities (i.e., facilities which meet the criteria provided by the ministerial ordinance of the MIC as being mobile telecommunications facilities used for services which are offered to a substantial percentage of users in a given area, and which are currently NTT Docomo, Okinawa Cellular, and KDDI).

Telecommunications Facilities of Carriers

· A telecommunications carrier that any of the following items applies to shall maintain its telecommunications facilities (except telecommunications facilities stipulated in the ministerial ordinance of the MIC as those having a minor influence on the users' benefit in the cases of damage or failure thereof) in compliance with the technical standards specified in the applicable ministerial ordinance of the MIC.

(1) a telecommunications carrier that installs telecommunications circuit facilities

(2) a telecommunications carrier that provides Universal Telecommunications Services

(3) a telecommunications carrier (excluding those falling under 2 above) that both of the following items apply to and that is designated by the Minister of the MIC as a telecommunications carrier that shall maintain its telecommunications facilities properly (“Carrier without Circuit Facilities”):

· having more than one million users at the end of the previous fiscal year; and

· charging service fees as compensation for providing telecommunications services.

Such telecommunications carriers shall confirm themselves that said telecommunications facilities are in compliance with the technical standards specified in the applicable ministerial ordinance of the MIC.

· Telecommunications carriers that install telecommunications circuit facilities, that provide Universal Telecommunications Services, or that are Carriers without Circuit Facilities shall establish their own administrative rules governing said telecommunications facilities in accordance with the ministerial ordinance of the MIC in order to ensure the reliable and stable provision of telecommunications services. These administrative rules shall provide the necessary rules with which said telecommunications carriers shall comply with respect to the policy, the structure and the method of the administration of the telecommunication facilities, and the appointment of the general administrator of the telecommunication facilities in accordance with the ministerial ordinance of the MIC. Telecommunications carriers that install telecommunications circuit facilities and telecommunications carriers that provide Universal Telecommunications Services shall submit such administrative rules to the Minister of the MIC prior to the commencement of operations, and Carriers without Circuit Facilities must submit them within three months after the date they are designated as Carriers without Circuit Facilities by the Minister of the MIC as above. When these telecommunications carriers amend their administrative rules, they shall submit a notification in respect of the amended matters to the Minister of the MIC without delay.

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· Although the regulations described above currently do not apply to us, there is a possibility that we will be designated as a Carrier without Circuit Facilities in the future depending on the increase of the number of users of our telecommunications services.

Protection of Users

· Telecommunications carriers, as well as business operators that are entrusted by telecommunications carriers with acting as an intermediary in entering into contracts relating to telecommunications services, are required to explain, in accordance with the ministerial ordinance of the MIC, to users (except for users who are telecommunications carriers) an outline of charges and other terms and conditions of their services when entering into certain contracts with such users relating to telecommunications services as specified in the Telecommunications Business Law.

· Telecommunications carriers shall, when the said contracts are validly established, prepare documents containing items as specified in the ministerial ordinance of the MIC and deliver such documents to the users. Telecommunications carriers may, by obtaining the approval of the users, provide the users with the said documents by electromagnetic means in lieu of the delivery of them, in accordance with the ministerial ordinance of the MIC.

· Telecommunications carriers are required, when a user offers to cancel a contract relating to telecommunications services as specified under the Telecommunications Business Law, within a certain period after the receipt of the said cancellation document, to accept cancellation of the contract without demanding that the user pay any compensation, cancellation fees, or other similar fees (except for charges for the telecommunications services provided before the cancellation and other charges as specified in the ministerial ordinance of the MIC).

· When telecommunications carriers entrust a business operator with acting as an intermediary in entering into contracts relating to telecommunications services and/or performing other business activities incidental thereto, telecommunications carriers shall exercise supervision and necessary measures over them in order to ensure the proper and secure execution of such entrusted business, in accordance with the ministerial ordinance of the MIC.

Order to Improve Business Activities

· The Minister of the MIC may, if it is deemed that certain business activities of a telecommunications carrier fall under inappropriate cases set forth in the Telecommunications Business Law, insofar as it is necessary to ensure the users’ benefit or the public interest, order the telecommunications carrier to take actions to improve operations methods or other measures.

Right of Way Privilege for Authorized Carriers

· A telecommunications carrier which is engaged, or intends to engage, in the telecommunications business by installing telecommunications circuit facilities and which wishes to have the privileged use of land or other public utilities for circuit facilities deployment, must obtain authorization for the entire or a part of the relevant telecommunications business from the Minister of the MIC.

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Merger, Business Transfer, or Divestiture of Carriers

· Post facto notification to the Minister of the MIC without delay is required.

Business Suspension, Abolition, or Dissolution of Carriers

· Post facto notification to the Minister of the MIC without delay is required. Prior announcement of withdrawals to service users is required in accordance with ministerial ordinances of the MIC.

Foreign Capital Participation

· Prior notification is required under the Foreign Exchange and Foreign Trade Law for the acquisition of shares of telecommunications carriers to which registration for start-up services is applicable. This is not applicable to purchasers of ADSs. The one-third foreign ownership restriction is applicable only to NTT East and NTT West.

C. Organizational Structure

The information required by this item is included in “Our Group Companies” above.

D. Property, Plant and Equipment

Property and equipment recorded on our consolidated balance sheet as of March 31, 2017 and March 31, 2018 consisted of the following:

	As of March 31
	2017			2018
	(millions of yen)
Data communications equipment	¥	15,014		¥	18,544
Office and other equipment		2,875			2,523
Land		538			2,039
Buildings		1,663			2,151
Leasehold improvements		4,062			4,182
Capitalized software		33,336			36,625
Assets under capital leases, primarily data communications equipment		32,854			35,821
Total		90,342			101,885
Less accumulated depreciation and amortization		(50,567	)		(55,471	)
Property and equipment-net	¥	39,775		¥	46,414

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Our fixed assets consist mainly of (i) data communications equipment necessary to offer services on our network, such as routers, servers, and other network equipment, which are mainly acquired under capital leases and (ii) software, such as that for back-office systems, virtualization software and others for cloud computing services, FX service application software, and others. Most of our property and equipment are located in Japan. The above-mentioned property and equipment consists of many relatively small assets. As of March 31, 2018, we did not own any buildings or facilities such as factories. As of March 31, 2018 we owned the properties related to the container-based module type data center in Matsue which is directly owned and operated by us. We bought land for our new container-based module type data center in Chiba. Other than the above assets recorded on our consolidated balance sheet, we use operating leased assets such as backbone lines, local access line, office premises, and network operation centers. There are no known environmental issues that may affect our utilization of our property and equipment.

Please also see “Network” above and Note 7 “Property and Equipment” and Note 9 “Leases” to our consolidated financial statements included in this annual report on Form 20-F.

Item 4A. Unresolved Staff Comments

None.

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Item 5. Operating and Financial Review and Prospects

A. Operating Results

You should read the following discussion of our financial condition and results of operations together with Item 3.A. of this annual report on Form 20-F and our consolidated financial statements and the notes to those financial statements beginning on page F-1 of this annual report. This discussion and analysis contains forward-looking statements that involve risks, uncertainties and assumptions. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of factors including but not limited to those in Item 3.D. of this annual report on Form 20-F.

Overview

The Group is a provider of a comprehensive range of network services and systems integration mainly in Japan. IIJ was founded in December 1992 and began offering Internet connectivity services commercially in July 1993. IIJ was one of the first commercial ISPs in Japan and has expanded the Group business to outsourcing services, WAN services and systems integration along with the expansion of usage of Internet by customers.

Our primary sources of revenue are Internet connectivity services, outsourcing services, WAN services, systems integration, equipment sales, and the ATM operation business. Internet connectivity services consist of Internet connectivity services for enterprise and Internet connectivity services for consumers. For WAN services, which are mainly provided by IIJ-Global, we offer closed network services using connectivity such as Ethernet, IP-VPN and dedicated lines. For outsourcing services, we provide services such as network security services, mail and web server hosting services, managed router services, Internet data center services and cloud computing services such as IIJ GIO/Hosting Package. For systems integration, we provide systems construction such as consulting, project planning, systems design and development of network systems to meet each of our customers’ requirements and systems operation and maintenance. IIJ GIO/Component is provided as a part of systems operation and maintenance. For equipment sales, we sell equipment as part of our provision of total network solutions.

We entered into the ATM operation business through our subsidiary, Trust Networks, which was established in July 2007. Trust Networks operates ATMs and its network systems to provide ATM service and receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. As of March 31, 2018, 1,096 ATMs were placed in places such as Japanese pachinko parlors.

Currently, we have two business segments: the network services and systems integration business and the ATM operation business. Our network services and systems integration business is comprised of Internet connectivity services, WAN services, outsourcing services, systems integration and equipment sales.

For the fiscal year ended March 31, 2018, net revenues of network services and systems integration business and ATM operation business before elimination of intersegment revenues were ¥172.4 billion and ¥4.0 billion, respectively. Our consolidated net revenue for the fiscal year ended March 31, 2018 was ¥176.1 billion.

Most of our revenues are from customers operating in Japan.

We refer to our subsidiaries and equity method investees as our group companies, and we have invested heavily in and exercise significant influence over these companies. For the fiscal year ended March 31, 2018, we consolidated all of our seventeen subsidiaries. In addition, we had nine equity method investees. For descriptions and the history of our group companies, see “Our Group Companies” in Item 4.B.

For a discussion of factors affecting our future financial results, see “Item 5.D. Trend Information.”

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Results of Operations

As an aid to understanding our operating results, the following tables show items from our statements of income for the periods indicated in millions of yen and as a percentage of total revenues. For further discussion about segment reporting, please see “Segment Information” later in this section.

	Fiscal year ended March 31,
	2016					2017					2018
	(millions of yen except for percentage data)
REVENUES:
Network services:
Internet connectivity services (enterprise)	¥	17,597		12.5	%	¥	22,634		14.3	%	¥	27,944		15.9	%
Internet connectivity services (consumer)		15,256		10.9			21,735		13.8			24,761		14.1
WAN services		25,177		17.9			26,460		16.8			29,295		16.6
Outsourcing services		21,266		15.1			22,167		14.0			26,119		14.8
Total		79,296		56.4			92,996		58.9			108,119		61.4
Systems integration:
Systems construction		21,145		15.0			22,626		14.3			22,528		12.8
Systems operation and maintenance		33,043		23.5			35,123		22.3			37,903		21.5
Total		54,188		38.5			57,749		36.6			60,431		34.3
Equipment sales		3,275		2.3			2,994		1.9			3,470		2.0
ATM operation business		3,889		2.8			4,050		2.6			4,031		2.3
Total revenues		140,648		100.0			157,789		100.0			176,051		100.0
COSTS AND EXPENSES:
Cost of network services:
Backbone cost		3,636		2.6			3,414		2.2			3,316		1.9
Local access line cost		22,913		16.3			24,625		15.6			27,490		15.6
Other connectivity cost		454		0.3			482		0.3			585		0.3
Depreciation and amortization		4,458		3.2			5,048		3.2			5,922		3.4
Other		32,778		23.3			42,818		27.1			51,385		29.2
Total cost of network services		64,239		45.7			76,387		48.4			88,698		50.4
Cost of systems integration:
Cost of equipment sales related to systems integration		7,919		5.6			7,902		5.0			6,835		3.9
Other		38,307		27.3			43,090		27.3			46,778		26.6
Total cost of systems integration		46,226		32.9			50,992		32.3			53,612		30.5
Cost of equipment sales		2,969		2.1			2,735		1.7			3,142		1.8
Cost of ATM operation business		2,559		1.8			2,428		1.5			2,366		1.3
Total costs		115,993		82.5			132,542		84.0			147,818		84.0
Sales and marketing		10,589		7.5			11,432		7.2			12,688		7.2
General and administrative		7,471		5.3			8,215		5.2			8,296		4.7
Research and development		455		0.3			466		0.3			487		0.3
Total costs and expenses		134,508		95.6			152,655		96.7			169,289		96.2
OPERATING INCOME		6,140		4.4			5,134		3.3			6,762		3.8
OTHER INCOME (EXPENSES):
Dividend income		93		0.0			118		0.1			243		0.1
Interest income		28		0.0			35		0.0			31		0.0
Interest expense		(241	)	(0.0	)		(304	)	(0.2	)		(375	)	(0.2	)
Foreign exchange loss, net		(71	)	(0.0	)		(45	)	(0.0	)		(16	)	(0.0	)
Net gain on sales of other investments		24		0.0			217		0.1			1,068		0.7
Loss on sales of an investment in equity method investee		-		-			(12	)	(0.0	)		-		-
Impairment of other investments		(15	)	(0.0	)		(31	)	(0.0	)		(110	)	(0.0	)
Other—net		235		0.0			315		0.2			237		0.1
Other income — net		53		0.0			293		0.2			1,078		0.7
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)		6,193		4.4	%		5,427		3.4	%		7,840		4.5	%
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)		6,193		4.4			5,427		3.4			7,840		4.5
INCOME TAX EXPENSE		2,183		1.5			2,225		1.4			2,696		1.5
EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES		180		0.1			130		0.1			135		0.0
NET INCOME		4,190		3.0			3,332		2.1			5,279		3.0
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(152	)	(0.1	)		(165	)	(0.1	)		(170	)	(0.1	)
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥	4,038		2.9	%	¥	3,167		2.0	%	¥	5,109		2.9	%

_________________

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The Fiscal Year Ended March 31, 2018 Compared to the Fiscal Year Ended March 31, 2017

Total Revenues

For the fiscal year ended March 31, 2018, our total revenues were ¥176.1 billion, an increase of 11.6% compared to ¥157.8 billion for the previous fiscal year, mainly due to the increase in mobile services which are recognized as Internet connectivity services for enterprise and consumers revenues and the increase in security related services revenue which are accounted as Outsourcing services revenues.

Network Services Revenues

For the fiscal year ended March 31, 2018, revenues from network services, which comprise our Internet connectivity services for enterprises, Internet connectivity services for consumers, WAN services and outsourcing services, increased by 16.3% to ¥108.1 billion from ¥93.0 billion for the previous fiscal year.

Internet Connectivity Services for Enterprise. Revenues for Internet connectivity services for enterprise depend on customers’ bandwidth usage, the number of contracts, and pricing for connectivity services. For the fiscal year ended March 31, 2018, revenues increased by 23.5% to ¥27.9 billion from ¥22.6 billion for the previous fiscal year. For the fiscal year ended March 31, 2018, IP connectivity service revenue increased by 3.4% to ¥10.1 billion from ¥9.8 billion for the previous fiscal year. For the fiscal year ended March 31, 2018, mobile services for enterprise revenue increased by 52.4% to ¥14.6 billion from ¥9.6 billion for the previous fiscal year. The increase was mainly due to increases in mobile-related services revenues along with an expansion of MVNE clients’ business transactions. We expect MVNE services to contribute to the continued growth of mobile services revenues along with rapid MVNO market expansion.

Internet Connectivity Services for Consumers. Revenues for Internet connectivity services for consumers depend on the number of service contracts and pricing. For the fiscal year ended March 31, 2018, revenues increased by 13.9% to ¥24.8 billion from ¥21.7 billion for the previous fiscal year. On December 31, 2017, IIJ sold all the shares of common stock it owned of hi-ho and revenues from hi-ho brand services after December 31, 2017 were not consolidated. Due to this, for the fiscal year ended March 31, 2018, revenues from hi-ho brand services decreased by 37.5% from the previous fiscal year, while the revenues from IIJ brand services increased by 19.4% from the previous fiscal year. The increase in IIJ brand services was mainly due to the increase in mobile services for consumers, in which we offer inexpensive data communication and voice services through SIM cards. The increase in revenues from our mobile services for consumers covered the decrease in revenues from our network service by hi-ho. Subscriptions to our mobile services for consumers were 1,005 thousand as of March 31, 2018 compared to 951 thousand for the previous fiscal year end. For the fiscal year ending March 31, 2019, we anticipate mobile services for consumers to continue to grow and contribute to our revenue growth.

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WAN Services. The WAN services that we offer are closed network services using connectivity such as Ethernet, IP-VPN and dedicated access lines, and are mainly provided by IIJ-Global and IIJ. Revenues for WAN services depend on the number of contracted lines for WAN services and the customers’ bandwidth usage. For the fiscal year ended March 31, 2018, revenues from WAN services increased by 10.7% to ¥29.3 billion from ¥26.5 billion for the previous fiscal year as we continued to accumulate orders from enterprise customers. For the fiscal year ending March 31, 2019, we do not expect WAN services revenue to grow, as a large-scale project connecting multiple locations will migrate to mobile connection.

Outsourcing Services. For outsourcing services, we are currently offering security-related, network-related, server-related, and data center-related outsourcing services, as well as public cloud computing services. Examples of our outsourcing services include, among others, firewall services, email-related services including a sandbox function, web hosting services, Distributed Denial of Service (“DDoS”) attack protection services, Internet-VPN services, router rental services, Security Operations Center (“SOC”) services and virtual desktop services, which are provided mainly to our Internet connectivity customers. Our revenues depend on our ability to cross-sell our existing outsourcing services, add new features to existing outsourcing services and introduce new services. For the fiscal year ended March 31, 2018, our outsourcing services revenues increased by 17.8% to ¥26.1 billion from ¥22.2 billion for the previous fiscal year. The increase was mainly due to an increase in security-related services revenues. We anticipate that outsourcing services revenues should continue to grow mainly due to increasing demands for security-related services by corporate customers.

Systems Integration Revenues

Generally speaking, while Japanese customers, especially blue-chip companies, use ready-made network services to build their network systems, they also require customization to meet their individual needs. To meet such needs, we believe that it is important as a total network solution provider to provide systems construction together with network services. Therefore, we have been focusing on providing systems construction to our corporate customers. Systems construction is mainly IP-related network construction such as VPN networks and IP-based server system construction such as web server and email server systems. Systems construction can be significantly affected by prevailing economic conditions, as corporations usually reduce their ICT-related investments during economic down times unless such investments are deemed critical.

For the fiscal year ended March 31, 2018, our revenues from systems integration, which include equipment sales related to systems integration, increased by 4.6% to ¥60.4 billion from ¥57.7 billion for the previous fiscal year. Systems construction revenue, a one-time revenue, was ¥22.5 billion, approximately flat from the previous fiscal year, with our continued receipt of orders for system construction projects. Systems operation and maintenance revenue, a recurring revenue, increased by 7.9% compared to the previous fiscal year. The increase was mainly due to continued accumulation of systems operation orders as well as an increase in private cloud computing services’ revenues. As of March 31, 2018, order backlog for systems construction and equipment sales was ¥7.0 billion, a decrease of 2.6% compared to the previous fiscal year end. As of March 31, 2018, order backlog for systems operation and maintenance was ¥39.6 billion, an increase of 15.4% compared to the previous fiscal year end.

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For the fiscal year ending March 31, 2019, systems construction revenues are expected to slightly increase from the fiscal year ended March 31, 2018. Systems integration revenues can fluctuate significantly in accordance with the absence or addition of large orders. For systems operation and maintenance revenues, a recurring type revenue, we anticipate that revenues should increase compared to the fiscal year ended March 31, 2018 with the accumulation of contracts, including contracts for our cloud computing services, as well as some of our construction projects migrating to the operation and maintenance phases.

Equipment Sales Revenues

For equipment sales, we sell third-party equipment to meet the one-stop needs of our customers. For the fiscal year ended March 31, 2018, equipment sales revenues increased by 15.9% to ¥3.5 billion from ¥3.0 billion for the previous fiscal year. Revenues increased mainly due to fluctuations in sales of devices such as mobile devices.

ATM Operation Business Revenues

Trust Networks, our subsidiary which operates this business, receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. For the fiscal year ended March 31, 2018, ATM operation business revenues decreased by 0.5% to ¥4.0 billion from ¥4.1 billion for the previous fiscal year. ATM operation business revenues are generated based on the number of placed ATMs and daily transactions. For the fiscal year ending March 31, 2019, we do not expect the revenue to largely increase as we do not expect to place large number of additional ATM placements.

Total Cost of Revenues

For the fiscal year ended March 31, 2018, our total cost of revenues increased by 11.5% to ¥147.8 billion from ¥132.5 billion for the previous fiscal year.

Cost of Network Services. For the fiscal year ended March 31, 2018, cost of network services increased by 16.1% to ¥88.7 billion from ¥76.4 billion for the previous fiscal year. For the fiscal year ended March 31, 2018, the gross margin ratio for network services revenues, which is the ratio of (1) the amount obtained by subtracting the cost of network services from network services revenues to (2) network services revenues, increased to 18.0% from 17.9% for the previous fiscal year. The increase was mainly due to the overall increase in fixed-type costs, such as an increase in outsourcing-related costs with our mobile infrastructure enhancement associated with our mobile-related revenue increase, an increase in circuit-related costs associated with our WAN services revenue increase, and an increase in network operation-related costs.

Cost of Systems Integration. For the fiscal year ended March 31, 2018, cost of systems integration increased by 5.1% to ¥53.6 billion from ¥51.0 billion for the previous fiscal year. For the fiscal year ended March 31, 2018, the gross margin ratio for systems integration, which is the ratio of (1) the amount obtained by subtracting the cost of systems integration revenues from systems integration revenues to (2) systems integration revenues, decreased to 11.3% from 11.7% for the previous fiscal year. The decrease was mainly due to increases in initial installation costs related to a large-scale services integration project.

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Cost of Equipment Sales. For the fiscal year ended March 31, 2018, cost of equipment sales increased by 14.9% to ¥3.1 billion from ¥2.7 billion for the previous fiscal year. The increase was primarily due to the increase in equipment sales revenues. For the fiscal year ended March 31, 2018, the gross margin ratio for equipment sales, which is the ratio of (1) the amount obtained by subtracting the cost of equipment sales from equipment sales revenues to (2) equipment sales revenues, increased to 9.5% from 8.7% for the previous fiscal year.

Cost of the ATM Operation Business. For the fiscal year ended March 31, 2018, cost of the ATM operation business was ¥2.4 billion, at the same level as that of the fiscal year. For the fiscal year ended March 31, 2018, the gross margin was ¥1.7 billion compared to ¥1.6 billion for the previous fiscal year. For the fiscal year ended March 31, 2018, the gross margin ratio for ATM operation business revenues, which is the ratio of (1) the amount obtained by subtracting the cost of ATM operation business from the ATM operation business revenues to (2) ATM operation business revenues, increased to 41.3% from 40.1% for the previous fiscal year mainly due to the improvement of per ATM utilization. As of March 31, 2018, 1,096 ATMs were placed.

Total Costs and Expenses

For the fiscal year ended March 31, 2018, total costs and expenses, which includes total cost of revenues, sales and marketing expenses, general and administrative expenses and research and development expenses, increased by 10.9% to ¥169.3 billion from ¥152.7 billion for the previous fiscal year.

Sales and Marketing. For the fiscal year ended March 31, 2018, sales and marketing expenses increased by 11.0% to ¥12.7 billion from ¥11.4 billion for the previous fiscal year. The increase was mainly due to increases in advertising expenses, personnel-related expenses, and sales commission expenses

General and Administrative. For the fiscal year ended March 31, 2018, general and administrative expenses increased by 1.0% to ¥8.3 billion from ¥8.2 billion for the previous fiscal year. The increase was mainly due to an increase in personnel-related expenses.

Research and Development. For the fiscal year ended March 31, 2018, research and development expenses increased by 4.5% to ¥0.5 billion from the previous fiscal year.

Operating Income

As a result of the foregoing factors, operating income for the fiscal year ended March 31, 2018 increased by 31.7% to ¥6.8 billion from ¥5.1 billion for the previous fiscal year.

Other Income (Expenses)-Net

For the fiscal year ended March 31, 2018, we recorded other income-net of ¥1,078 million compared to other income-net of ¥293 million for the previous fiscal year.

Dividend Income. For the fiscal year ended March 31, 2018, dividend income was ¥243 million compared to ¥118 million for the previous fiscal year.

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Interest Income. For the fiscal year ended March 31, 2018, interest income was ¥31 million compared to ¥35 million for the previous fiscal year.

Interest Expense. For the fiscal year ended March 31, 2018, interest expense, comprising interest expense related to borrowings and capital lease obligations, amounted to ¥375 million compared to ¥304 million for the previous fiscal year.

Foreign Exchange (Loss)-Net. For the fiscal year ended March 31, 2018, net foreign exchange loss amounted to ¥16 million compared to the loss of ¥45 million for the previous fiscal year. Foreign exchange loss was mainly the result of the Japanese yen becoming stronger against foreign currencies, including the U.S. dollar and the British pound in the fiscal year ended March 31, 2018.

Net Gain on Sales of Other Investments. For the fiscal year ended March 31, 2018, we recorded a net gain on sales of other investments of ¥1,068 million compared to the net gain of ¥217 million for the previous fiscal year. Unrealized gains on holding available-for-sale equity securities of ¥7.5 billion were measured based on closing prices of March 30, 2018, the final day of trading in the fiscal year ended March 31, 2018. Due to the revision to U.S. GAAP relating to available-for-sale equity securities, the net of tax amount of unrealized gains of ¥5.1 billion were reclassified to retained earnings at the beginning of the fiscal year ending March 31, 2019. Changes in unrealized gains or losses due to fluctuations of stock prices will be recognized in other income (expenses) in every quarter beginning with our consolidated statements of income from the first quarter of the fiscal year ending March 31, 2019. Therefore, fluctuations of stock prices may impact our consolidated statements of income.

Loss on sales of an investment in equity method investee. For the fiscal year ended March 31, 2018, we recorded no loss on sales of an investment in equity method investee, as compared to a loss of ¥12 million in the previous fiscal year.

Impairment of Other Investments. For the fiscal year ended March 31, 2018, we recorded an impairment loss on other investments of ¥110 million compared to a loss of ¥31 million for the previous fiscal year.

Other-Net. For the fiscal years ended March 31, 2017 and 2018, we recorded other income of ¥315 million and ¥237 million, respectively.

Income from Operations before Income Tax Expense and Equity in Net Income of Equity Method Investees

For the fiscal year ended March 31, 2018, we recorded income from operations before income tax expense and equity in net income of equity method investees of ¥7.8 billion compared to ¥5.4 billion for the previous fiscal year. The increase primarily reflects the increase in operating income and a net gain on sales of other investments described above.

Income Tax Expense

For the fiscal year ended March 31, 2018, we recorded income tax expense of ¥2.7 billion compared to income tax expense of ¥2.2 billion for the previous fiscal year.

Equity in Net Income of Equity Method Investees

For the fiscal year ended March 31, 2018, equity in net income of equity method investees was ¥135 million compared to ¥130 million for the previous fiscal year. The increase was mainly due to an increase in our share of net income related to Multifeed.

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Net income attributable to noncontrolling interests

For the fiscal year ended March 31, 2018, net income attributable to noncontrolling interests was ¥170 million compared to ¥165 million for the previous fiscal year. The increase was mainly due to net income of Trust Networks Inc.

Net income attributable to IIJ

For the fiscal year ended March 31, 2018, net income attributable to IIJ was ¥5.1 billion, compared to ¥3.2 billion for the previous fiscal year. The increase primarily reflects the decrease in operating income and a net gain on sales of other investments.

The Fiscal Year Ended March 31, 2017 Compared to the Fiscal Year Ended March 31, 2016

Total Revenues

For the fiscal year ended March 31, 2017, our total revenues were ¥157.8 billion, an increase of 12.2% compared to ¥140.6 billion for the previous fiscal year, mainly due to the increase in mobile services which are recognized as Internet connectivity services for enterprise and consumers revenues and the increase in system integration revenues.

Network Services Revenues

For the fiscal year ended March 31, 2017, revenues from network services, which comprise our Internet connectivity services for enterprises, Internet connectivity services for consumers, WAN services and outsourcing services, increased by 17.3% to ¥93.0 billion from ¥79.3 billion for the previous fiscal year.

Internet Connectivity Services for Enterprise. Revenues for Internet connectivity services for enterprise depend on customers’ bandwidth usage, the number of contracts, and pricing for connectivity services. For the fiscal year ended March 31, 2017, revenues increased by 28.6% to ¥22.6 billion from ¥17.6 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, IP connectivity service revenue increased by 1.0% to ¥9.8 billion from ¥9.7 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, mobile services for enterprise revenue increased by 109.5% to ¥9.6 billion from ¥4.6 billion for the previous fiscal year. The increase was mainly due to the increase in mobile-related services revenues along with an expansion of MVNE business clients’ business transactions. We expect MVNE solution services to contribute to the continued growth of mobile services revenues along with rapid MVNO market expansion.

Internet Connectivity Services for Consumers. Revenues for Internet connectivity services for consumers depend on the number of service contracts and pricing. For the fiscal year ended March 31, 2017, revenues increased by 42.5% to ¥21.7 billion from ¥15.3 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, the revenues from hi-ho brand services decreased by 17.2% from the previous fiscal year, while the revenues from IIJ brand services increased by 54.4% from the previous fiscal year. The increase in IIJ brand services was mainly due to the increase in mobile services for consumers, in which we offer inexpensive data communication and voice services through SIM cards. The increase in revenues from our mobile services for consumers covered the decrease in revenues from our network service by hi-ho. Subscriptions to our mobile services for consumers were 951 thousand as of March 31, 2017 compared to 747 thousand for the previous fiscal year end.

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WAN Services. The WAN services that we offer are closed network services using connectivity such as Ethernet, IP-VPN and dedicated access lines, and are mainly provided by IIJ-Global and IIJ. Revenues for WAN services depend on the number of contracted lines for WAN services and the customers’ bandwidth usage. For the fiscal year ended March 31, 2017, revenues from WAN services increased by 5.1% to ¥26.5 billion from ¥25.2 billion for the previous fiscal year as we continued to accumulate orders from enterprise customers.

Outsourcing Services. For outsourcing services, we are currently offering security-related, network-related, server-related, and data center-related outsourcing services, as well as public cloud computing services. Examples of our outsourcing services include, among others, firewall services, email-related services including a sandbox function, web hosting services, Distributed Denial of Service (“DDoS”) attack protection services, Internet-VPN services and router rental services, which are provided mainly to our Internet connectivity customers. Our revenues depend on our ability to cross-sell our existing outsourcing services, add new features to existing outsourcing services and introduce new services. For the fiscal year ended March 31, 2017, our outsourcing services revenues increased by 4.2% to ¥22.2 billion from ¥21.3 billion for the previous fiscal year. The increase was mainly due to an increase in security-related services revenues. We anticipate that outsourcing services revenues should continue to grow mainly due to increasing demands for security-related services by corporate customers.

Systems Integration Revenues

Generally speaking, while Japanese customers, especially blue-chip companies, use ready-made network services to build their network systems, they also require customization to meet their individual needs. To meet such needs, we believe that it is important as a total network solution provider to provide systems construction together with network services. Therefore, we have been focusing on providing systems construction to our corporate customers. Systems construction is mainly IP-related network construction such as VPN networks and IP-based server system construction such as web server and email server systems. Systems construction can be significantly affected by prevailing economic conditions, as corporations usually reduce their ICT-related investments during economic down times unless such investments are deemed critical.

For the fiscal year ended March 31, 2017, our revenues from systems integration, which include equipment sales related to systems integration, increased by 6.6% to ¥57.7 billion from ¥54.2 billion for the previous fiscal year. Systems construction revenue, a one-time revenue, increased by 7.0% compared to the previous fiscal year. The increase was mainly due to an increase in systems construction projects and the execution of several large-scale projects, including the exportation of a container data center module which generated approximately ¥1.2 billion in revenue. Systems operation and maintenance revenue, a recurring revenue, increased by 6.3% compared to the previous fiscal year. The increase was mainly due to an increase in private cloud computing services revenues and an increase in operation and maintenance revenues which had been shifted from systems construction projects. As of March 31, 2017, order backlog for systems construction and equipment sales was ¥7.2 billion, an increase of 18.1% compared to the previous fiscal year end. As of March 31, 2017, order backlog for systems operation and maintenance was ¥34.3 billion, an increase of 24.5% compared to the previous fiscal year end.

Equipment Sales Revenues

For equipment sales, we sell third-party equipment to meet the one-stop needs of our customers. For the fiscal year ended March 31, 2017, equipment sales revenues decreased by 8.6% to ¥3.0 billion from ¥3.3 billion for the previous fiscal year. Revenues decreased mainly due to fluctuations in sales of devices such as mobile devices.

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ATM Operation Business Revenues

Trust Networks, our subsidiary which operates this business, receives a commission for each bank withdrawal transaction when a customer uses its serviced ATMs. For the fiscal year ended March 31, 2017, ATM operation business revenues increased by 4.1% to ¥4.1 billion from ¥3.9 billion for the previous fiscal year. Revenues mainly increased in conjunction with an increase in daily transactions.

Total Cost of Revenues

For the fiscal year ended March 31, 2017, our total cost of revenues increased by 14.3% to ¥132.5 billion from ¥116.0 billion for the previous fiscal year.

Cost of Network Services. For the fiscal year ended March 31, 2017, cost of network services increased by 18.9% to ¥76.4 billion from ¥64.2 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, the gross margin ratio for network services revenues, which is the ratio of (1) the amount obtained by subtracting the cost of network services from network services revenues to (2) network services revenues, decreased to 17.9% from 19.0% for the previous fiscal year. The decrease was mainly because of the overall increase in fixed-type costs, such as an increase in outsourcing-related costs with our mobile infrastructure enhancement associated with our mobile-related revenue increase, an increase in circuit-related costs associated with our WAN services revenue increase, and an increase in network operation-related costs.

Cost of Systems Integration. For the fiscal year ended March 31, 2017, cost of systems integration increased by 10.3% to ¥51.0 billion from ¥46.2 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, the gross margin ratio for systems integration, which is the ratio of (1) the amount obtained by subtracting the cost of systems integration revenues from systems integration revenues to (2) systems integration revenues, decreased to 11.7% from 14.7% for the previous fiscal year. The decrease was mainly due to profit deterioration resulting from low productivity of systems engineers and the delay in offering some functions of our ASP-type foreign exchange systems which led to the delay in revenue recognition while cost was recognized.

Cost of Equipment Sales. For the fiscal year ended March 31, 2017, cost of equipment sales decreased by 7.9% to ¥2.7 billion from ¥3.0 billion for the previous fiscal year. The decrease was primarily due to the decrease in equipment sales revenues. For the fiscal year ended March 31, 2017, the gross margin ratio for equipment sales, which is the ratio of (1) the amount obtained by subtracting the cost of equipment sales from equipment sales revenues to (2) equipment sales revenues, decreased to 8.7% from 9.4% for the previous fiscal year.

Cost of the ATM Operation Business. For the fiscal year ended March 31, 2017, cost of the ATM operation business was ¥2.4 billion compared to ¥2.6 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, the gross margin was ¥1.6 billion compared to ¥1.3 billion for the previous fiscal year. For the fiscal year ended March 31, 2017, the gross margin ratio for ATM operation business revenues, which is the ratio of (1) the amount obtained by subtracting the cost of ATM operation business from the ATM operation business revenues to (2) ATM operation business revenues, increased to 40.1% from 34.2% for the previous fiscal year mainly due to the improvement of per ATM utilization. As of March 31, 2017, 1,066 ATMs were placed.

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Total Costs and Expenses

For the fiscal year ended March 31, 2017, total costs and expenses, which includes total cost of revenues, sales and marketing expenses, general and administrative expenses and research and development expenses, increased by 13.5% to ¥152.7 billion from ¥134.5 billion for the previous fiscal year.

Sales and Marketing. For the fiscal year ended March 31, 2017, sales and marketing expenses increased by 8.0% to ¥11.4 billion from ¥10.6 billion for the previous fiscal year. The increase was mainly due to increases in sales commission expenses of mobile-related services and advertising expenses.

General and Administrative. For the fiscal year ended March 31, 2017, general and administrative expenses increased by 10.0% to ¥8.2 billion from ¥7.5 billion for the previous fiscal year. The increase was mainly due to the increase in office rent expenses, commission expenses, and taxes and public dues.

Research and Development. For the fiscal year ended March 31, 2017, research and development expenses increased by 2.4% to ¥0.5 billion from ¥0.5 billion for the previous fiscal year.

Operating Income

As a result of the foregoing factors, operating income for the fiscal year ended March 31, 2017 decreased by 16.4% to ¥5.1 billion from ¥6.1 billion for the previous fiscal year.

Other Income (Expenses)-Net

For the fiscal year ended March 31, 2017, we recorded other income-net of ¥293 million compared to other income-net of ¥53 million for the previous fiscal year.

Dividend Income. For the fiscal year ended March 31, 2017, dividend income was ¥118 million compared to ¥93 million for the previous fiscal year.

Interest Income. For the fiscal year ended March 31, 2017, interest income was ¥35 million compared to ¥28 million for the previous fiscal year.

Interest Expense. For the fiscal year ended March 31, 2017, interest expense, comprising interest expense related to borrowings and capital lease obligations, amounted to ¥304 million compared to ¥241 million for the previous fiscal year.

Foreign Exchange (Loss) -Net. For the fiscal year ended March 31, 2017, net foreign exchange loss amounted to ¥45 million compared to the loss of ¥71 million for the previous fiscal year. Foreign exchange loss was mainly the result of the Japanese yen becoming stronger against foreign currencies, including the U.S. dollar and the British pound in the fiscal year ended March 31, 2017.

Net Gain on Sales of Other Investments. For the fiscal year ended March 31, 2017, we recorded a net gain on sales of other investments of ¥217 million compared to the net gain of ¥24 million for the previous fiscal year.

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Loss on sales of an investment in equity method investee. For the fiscal year ended March 31, 2017, we recorded loss on sales of an investment in equity method investee of ¥12 million as a result of selling all of our ownership interest in e-CORPORATION.

Impairment of Other Investments. For the fiscal year ended March 31, 2017, we recorded an impairment loss on other investments of ¥31 million compared to the loss of ¥15 million for the previous fiscal year.

Other-Net. For the fiscal years ended March 31, 2016 and 2017, we recorded other income of ¥235 million and ¥315 million, respectively.

Income from Operations before Income Tax Expense and Equity in Net Income of Equity Method Investees

For the fiscal year ended March 31, 2017, we recorded income from operations before income tax expense and equity in net income of equity method investees of ¥5.4 billion compared to ¥6.2 billion for the previous fiscal year. The decrease primarily reflects the decrease in operating income.

Income Tax Expense

For the fiscal year ended March 31, 2017, we recorded income tax expense of ¥2.2 billion compared to income tax expense of ¥2.2 billion for the previous fiscal year.

Equity in Net Income of Equity Method Investees

For the fiscal year ended March 31, 2017, equity in net income of equity method investees was ¥130 million compared to ¥180 million for the previous fiscal year. The decrease was mainly due to a decrease in our share of net income related to Multifeed.

Net income attributable to noncontrolling interests

For the fiscal year ended March 31, 2017, net income attributable to noncontrolling interests was ¥165 million compared to ¥152 million for the previous fiscal year. The increase was mainly due to net income of Trust Networks Inc.

Net income attributable to IIJ

For the fiscal year ended March 31, 2017, net income attributable to IIJ was ¥3.2 billion, compared to ¥4.0 billion for the previous fiscal year. The decrease primarily reflects the decrease in operating income.

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Segment Reporting

Currently, we have two business segments: a network services and systems integration business segment and an ATM operation business segment. The network services and systems integration business segment is comprised of Internet connectivity services, WAN services, outsourcing services, systems integration and equipment sales.

The following table presents net revenues and operating income for the fiscal years ended March 31, 2016, 2017, and 2018, respectively, by segment.

Business Segment Summary:

	Fiscal year ended March 31,
	2016			2017			2018
	(millions of yen)
Revenues:
Network services and systems integration business	¥	137,142		¥	154,126		¥	172,370
ATM operation business		3,889			4,050			4,031
Elimination		(383	)		(387	)		(350	)
Total		140,648			157,789			176,051
Operating income:
Network services and systems integration business		5,128			3,854			5,430
ATM operation business		1,149			1,438			1,510
Elimination		(137	)		(157	)		(178	)
Total	¥	6,140		¥	5,134		¥	6,762

The Fiscal Year Ended March 31, 2018 Compared to the Fiscal Year Ended March 31, 2017

Network services and Systems Integration Business Segment

Net revenues from our network services and systems integration business segment, before elimination of intersegment revenues, increased by 11.8% to ¥172.4 billion for the fiscal year ended March 31, 2018 compared to ¥154.1 billion for the previous fiscal year. The increase in revenues was mainly due to the increase in mobile-related services both for enterprise and consumers, outsourcing services, WAN services and systems operation. Operating costs and expenses of our network services and systems integration business for the fiscal year ended March 31, 2018 increased by 11.1% to ¥166.9 billion compared to ¥150.3 billion for the previous fiscal year, mainly due to the increases in costs of network services and systems integration. As a result, operating income of our network services and systems integration business for the fiscal year ended March 31, 2018 increased to ¥5.4 billion compared to ¥3.9 billion for the previous fiscal year.

ATM Operation Business Segment

Net revenues from our ATM operation business segment, before elimination of intersegment revenues, decreased by 0.5% to ¥4.0 billion for the fiscal year ended March 31, 2018 compared to ¥4.1 billion for the previous fiscal year. Operating costs and expense of our ATM operation business for the fiscal year ended March 31, 2018 were ¥2.5 billion compared to ¥2.6 billion for the previous fiscal year. As a result, operating income of our ATM operation business for the fiscal year ended March 31, 2018 was ¥1.5 billion compared to operating income of ¥1.4 billion for the previous fiscal year.

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The Fiscal Year Ended March 31, 2017 Compared to the Fiscal Year Ended March 31, 2016

Network services and Systems Integration Business Segment

Net revenues from our network services and systems integration business segment, before elimination of intersegment revenues, increased by 12.4% to ¥154.1 billion for the fiscal year ended March 31, 2017 compared to ¥137.1 billion for the previous fiscal year. The increase in revenues was mainly due to the increase in mobile-related services both for enterprise and consumers, WAN services, systems integration and outsourcing services. Operating costs and expenses of our network services and systems integration business for the fiscal year ended March 31, 2017 increased by 13.9% to ¥150.3 billion compared to ¥132.0 billion for the previous fiscal year, mainly due to the increases in costs of network services and systems integration, and SG&A expenses. As a result, operating income of our network services and systems integration business for the fiscal year ended March 31, 2017 decreased to ¥3.9 billion compared to ¥5.1 billion for the previous fiscal year.

ATM Operation Business Segment

Net revenues from our ATM operation business segment, before elimination of intersegment revenues, increased by 4.1% to ¥4.1 billion for the fiscal year ended March 31, 2017 compared to ¥3.9 billion for the previous fiscal year. Operating costs and expense of our ATM operation business for the fiscal year ended March 31, 2017 were ¥2.6 billion compared to ¥2.7 billion for the previous fiscal year. As a result, operating income of our ATM operation business for the fiscal year ended March 31, 2017 was ¥1.4 billion compared to operating income of ¥1.1 billion for the previous fiscal year.

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Application of Critical Accounting Policies

In reviewing our consolidated financial statements (“financial statements”), you should consider the sensitivity of our reported financial condition and results of operations to changes in the conditions and assumptions underlying the estimates and judgments made by our management in applying critical accounting policies.

The preparation of the financial statements requires the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses for the periods presented. Actual results may differ from these estimates, judgments and assumptions. Note 1 to our consolidated financial statements includes a summary of the significant accounting policies used in the preparation of our financial statements. Certain accounting policies are particularly critical because of their significance to our reported results and because of the possibility that future events may differ significantly from the conditions and assumptions underlying the estimates used and judgments made by our management in preparing our financial statements.

We have discussed the development and selection of critical accounting policies and estimates with our Disclosure Committee, and the Disclosure Committee has reviewed the disclosure relating to these, which are included in this “Operating and Financial Review and Prospects.” For all of these policies, we caution that future events rarely develop exactly as forecasted, and even the best estimates may require adjustment.

Revenue recognition

Network service revenues consist of Internet connectivity services, WAN services and outsourcing services.

Revenues from Internet connectivity services consist of Internet connectivity services for enterprise and Internet connectivity for consumers. Internet connectivity services for enterprise represent dedicated Internet access type services, such as IP services and Data Center Connectivity services, broadband Internet connectivity services that use fiber optic and ADSL access, such as IIJ FiberAccess/F Service and IIJ DSL/F Service and wireless broadband Internet connectivity services, such as IIJ Mobile Service. Internet connectivity services for consumers are provided under IIJ brands such as IIJmio, hi-ho brand and others, and consist of dial-up services, optical based or ADSL based broadband services and wireless broadband Internet connectivity services. WAN services are closed network services for enterprise customers which mainly use dedicated lines. Outsourcing service revenues consist principally of sales of various Internet access-related services such as security-related services, network related services, server related services, data center related services, cloud computing services and others. The term of these contracts is generally one month or one year. All of these services revenues are billed and recognized monthly on a straight-line basis. Initial setup fees received in connection with network services revenues are deferred and recognized over the estimated average period of the subscription for each service.

System integration revenue involves one or more of the following deliverables:

· System construction services―include all or some of the following elements depending on arrangements to meet each of our customer's requirements: consulting, project planning, system design, and development of network systems. These services also include the installation of software as well as configuration and installation of hardware.

· Software―we resell third-party software such as Oracle and Windows to our customers, which are installed by us during the system development process.

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· Hardware―we also resell third-party hardware, primarily servers, switches and routers, which we install during the system development process. The hardware is generic hardware that is often sold by third-party manufacturers and resellers.

· Monitoring and operating services―we monitor our customer's network activity and Internet connectivity to detect and report problems. We also provide constant data backup services.

· Hardware and software maintenance services―we repair or replace any malfunctioning parts of hardware. We examine software faults and provide suitable solutions to customers.

The system construction services are generally delivered over a three-month period. All hardware and software are delivered and installed during this period. Customers are required to pay a specified fixed fee that is not payable until after the system construction has been completed and accepted by our customers.

Monitoring, operating and hardware and software maintenance services generally commence once our customers have accepted the systems, and contract periods are generally from one to five years. Our contracts include a stated annual fee for these services.

For multiple-element arrangements that include system construction services, hardware, software essential to the hardware product’s functionality and undelivered non-software services (e.g., monitoring and operating services), the Company allocates revenue to all deliverables based on their relative selling prices. The Company uses a hierarchy to determine the selling price to be used for allocating revenue to the deliverables: (i) vendor-specific objective evidence of fair value (“VSOE”), (ii) third-party evidence of the selling price (“TPE”) and (iii) best estimate of the selling price (“ESP”). The allocation of revenue is based mainly on the Company’s ESPs except for certain undelivered non-software services for which VSOE has been established. The Company’s process for determining its ESP for deliverables includes various factors that may vary depending on the circumstances and specific characteristics related to each deliverable. In developing the ESP, the Company considers customer demand, the existence and effect of competitors, general profit margin realized in the marketplace, volume of the transactions, the Company’s internal costs of providing the deliverables, the profit objectives including targeted and historical margins realized on similar sales to similar customers and the historical pricing practices.

The method used to account for each unit and the period over which each unit of accounting is recognized are as follows:

· Revenue allocated to system construction services is accounted for using contract accounting. System construction service revenues, which are generally completed within three months, are recognized based on the completed-contract method in compliance with Accounting Standards Codification (“ASC”) 605-35-25-92 because the Company is unable to bill customers and the title to the constructed network system is not transferred to the customers unless they are satisfied with and accept the completed systems.

· Revenue related to the hardware and software essential to the hardware product’s functionality is not recognized until the customer acceptance is received because title to the hardware and software do not transfer to our customers until formal acceptance is received.

· Revenue related to undelivered non-software services (monitoring, operating and hardware maintenance services) is recognized on a straight-line basis over the contract period.

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The Company also enters into multiple-element arrangements for system integration services that include software not essential to the hardware product’s functionality and software-related services and account for them in accordance with ASC 985-605, “Software-Revenue Recognition.” The Company has been able to establish VSOE of fair value of the software-related services based on separate renewal contracts of the services that are consistently priced within a narrow range. The Company allocates revenue to such services based on VSOE and recognizes the revenues on a straight-line basis over the contract period. The Company allocates the residual amount to the software.

Equipment sales revenues are recognized when equipment is delivered and accepted by the customer.

The Company evaluates whether it is appropriate to record the gross amount of revenues and related costs or the net amount earned in reporting system construction services and equipment sales, depending on whether the Company functions as the principal or agent.

The ATM operation business revenues consist primarily of commissions for each withdrawing transaction with the use of ATMs. The ATM commission collected from each withdrawal is aggregated every month and recognized as ATM operation revenues.

Revenue is recognized net of consumption tax collected from customers and subsequently remitted to governmental authorities.

Useful lives of property and equipment

Property and equipment, net recorded on our balance sheet was ¥46.4 billion at March 31, 2018, representing 30.2% of our total assets. Property and equipment are recorded at cost. Depreciation and amortization of property and equipment, including capitalized software and capital leases, are computed principally using the straight-line method based on either the estimated useful lives of the assets or the lease period, whichever is shorter. Our depreciation and amortization expenses for property and equipment for the fiscal years ended March 31, 2016, 2017 and 2018 were ¥9.5 billion, ¥10.5 billion and ¥12.0 billion, respectively.

We estimate the useful lives of property and equipment in order to determine the amount of depreciation and amortization expense to be recorded in each fiscal year. We determine the useful lives of our assets at the time the assets are acquired and base our determinations on expected use, experience with similar assets, established laws and regulations as well as taking into account anticipated technological or other changes. Estimated useful lives by major asset classes at March 31, 2018, were as follows:

Item	Range of useful lives
Data communications, office and other equipment	2 to 20 years
Buildings	20 years
Leasehold improvements	4 to 20 years
Capitalized software	5 to 7 years
Capital leases	4 to 6 years

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If technological or other changes were to occur more rapidly or in a different form than anticipated or new laws or regulations are enacted or the intended use changes, the useful lives assigned to these assets may need to be shortened, or we may need to sell or write off the assets, resulting in recognition of increased depreciation and amortization or losses in future periods. Our losses on disposal of property and equipment for the fiscal years ended March 31, 2016, 2017, and 2018 were ¥66 million, ¥171 million and ¥112 million, respectively.

A one-year change in the useful life of these assets would have increased or decreased depreciation expense by approximately ¥6.2 billion and ¥3.9 billion, respectively.

Ordinary maintenance and repairs are charged to income as incurred. Major replacements and improvements are capitalized. When properties are retired or otherwise disposed of, the property and related accumulated depreciation accounts are relieved of the applicable amounts and any differences are included in operating cost and expenses.

Goodwill and intangible assets

Goodwill and intangible assets that are deemed to have indefinite useful lives are not amortized, but are subject to impairment testing. Impairment testing is performed annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company performs annual impairment tests on March 31. If the carrying amount of a reporting unit exceeds its fair value, the Company then performs the second step of the goodwill impairment test to measure the amount of impairment loss, if any.

No impairment of goodwill was recognized during the years ended March 31, 2016, 2017 and 2018.

The Company recorded ¥11 million and ¥81 million of loss on impairment of the trademark right related to hi-ho in “General and administrative” expenses in the Company’s consolidated statements of income for the years ended March 31, 2016 and 2017, respectively. Because of the recent decrease in revenues of hi-ho, the Company recognized that the trademark might be impaired. The carrying value of the trademark exceeded its fair value and the impairment loss was recognized in an amount equal to the excess of the carrying amount of the trademark over the fair value of the trademark. The fair value of the trademark was calculated using the relief-from-royalty method. The amount of loss was included in the network service and system integration business segment.

Intangible assets with finite useful lives, consisting of customer relationships, are amortized using a non-straight-line basis based on the pattern of expected future economic benefit over the estimated useful lives, which range from 10 to 19 years. We estimate the useful lives of the intangible assets, considering the customer attrition rate related to the customer relationships, results of contract update, new technology or economic situation. If the attrition rate increases beyond expectation or rapid technological advances render the existing technology obsolete, we may need to re-evaluate the remaining useful lives, or recognize impairment losses on the customer relationships.

On December 31, 2017, we sold all of the company’s shares of hi-ho, which provided Internet connectivity services for consumers, to a third party. Hi-ho was included in the network service and systems integration business segment. We recognized a gain of ¥45 million on the sale of the hi-ho shares, in addition, goodwill and trademark decreased by ¥87 million and ¥15 million, respectively, for the year ended March 31, 2018. The gain on the sale was recorded in “General and administrative” expenses in our consolidated statements of income.

Impairment of long-lived assets

Long-lived assets consist principally of property and equipment, including those items leased under capital leases and amortized intangible assets. We perform an impairment review for our long-lived assets whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. This analysis is separate from our analysis of the useful lives of our assets, but it is affected by some similar factors. Factors that we consider important which could trigger an impairment review include, but are not limited to, the impact of the following trends or conditions:

· significant decline in the market value of an asset,

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· current period operating cash flow loss,

· introduction of competing technologies or services,

· significant underperformance of expected or historical cash flows,

· significant or continuing decline in subscribers,

· changes in the manner or use of an asset,

· disruptions in the use of network equipment under capital lease arrangements, and

· other negative industry or economic trends.

When we determine that the carrying amount of specific assets may not be recoverable based on the existence or occurrence of one or more of the above or other factors, we estimate the future cash inflows and outflows expected to be generated by the assets over their expected useful lives. We estimate the sum of expected undiscounted future cash flows based upon historical trends adjusted to reflect our best estimate of future market and operating conditions. If the sum of the expected undiscounted future net cash flows is less than the carrying value of the assets, we record an impairment loss based on the fair values of the assets. Such fair values may be based on established markets, independent appraisals and valuations or discounted cash flows. If actual market and operating conditions under which assets are used are less favorable or shorter than those projected by management, resulting in reduced cash flows, additional impairment for assets may be required.

Allowance for doubtful accounts and uncollectible contractual prepayments

We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. As of March 31, 2017 and 2018, we maintained allowances for doubtful accounts of ¥185 million and ¥185 million, respectively. Management specifically analyzes accounts and loans receivable including historical bad debts, customer concentrations, customer credit-worthiness and current economic trends when evaluating the adequacy of the allowances for doubtful accounts. If the financial condition of our customers or debtors were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required.

Deferred tax assets

We record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized. As of March 31, 2018, certain subsidiaries not subject to consolidation tax filing had tax operating loss carryforwards, which were composed of ¥707 million in the United States of America and ¥1,180 million in other countries. The tax operating loss carryforwards are available to offset future taxable income and will expire as shown in Note 12 of our consolidated financial statements. The net operating loss carryforwards in the United States of America will expire in the period ending from December 31, 2021 to 2037. With the exception of ¥251 million with no expiration period, the net operating loss carryforwards in other countries will expire in the period ending from December 31, 2018 to 2022. While we have considered future taxable income and ongoing prudent and feasible tax planning strategies in assessing the need for the valuation allowance, if there are changes in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years, a decrease of or an increase in valuation allowance against deferred tax assets related to tax operating loss carryforwards and other temporary differences would result in the decrease or increase in deferred tax expense.

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Valuation of investments

We have investments in securities, and the valuation of such investments and funds requires us to make judgments using information that is generally uncertain at the time, such as assumptions regarding future financial conditions and cash flows. As of March 31, 2018, we had available-for-sale securities of ¥9.3 billion and cost method investments of ¥2.1 billion.

We review the fair value of available-for-sale securities on a regular basis to determine if the fair value of any individual security has declined below its cost and if such decline is other-than-temporary. If the decline in value is judged to be other-than-temporary, the cost basis of the investment is written down to fair value. Other-than-temporary declines in value are determined taking into consideration the extent of decline in fair value, the length of time that the decline in fair value below cost has existed, the financial condition and near-term prospects of the issuer and IIJ’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value and events that might accelerate the recognition of impairment. For debt securities for which the declines are deemed to be other-than-temporary and there is no intent to sell and it is not more likely than not that we will be required to sell the securities before the recovery of the amortized cost basis, impairments are separated into the amount related to credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income (loss). For debt securities for which the declines are deemed to be other-than-temporary and there is an intent to sell or it is more likely than not that we will be required to sell the securities before the recovery of the amortized cost basis, impairments in their entirety are recognized in earnings. For equity securities for which the declines are deemed to be other-than-temporary, the resulting realized loss is recognized in earnings in the period in which the decline is deemed to be other-than-temporary.

Non-marketable equity securities are carried at cost as the fair value is not readily determinable. When we evaluate whether non-marketable equity securities are impaired or not, we evaluate first whether an event or change in circumstances has occurred in the period that may have significant adverse effect on the fair value of the securities (an impairment indicator). We use such impairment indicators as follows:

· A significant deterioration in the earnings performance or business prospects of the investee.

· A significant adverse change in the regulatory, economic, or technological environment of the investee.

· A significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates.

· A recent example of the new issuance of a security, in which the issue price is less than our cost.

We estimate the fair value of the non-marketable equity securities when an impairment indicator is present. The fair value is determined as a result of considering various unobservable inputs which are available to us, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in the assets and liabilities held by the investees. We recognize impairment of non-marketable equity securities when the fair value is below the carrying amount and the decline in fair value is considered to be other-than-temporary.

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Our unrealized loss on investments in marketable equity securities as of March 31, 2018 relates to Japanese companies (three issuers) in the financial, heavy and shipping industries. The fair value of each investment is between 2.8% and 8.6% less than its cost. The duration of the unrealized loss position was primarily less than two months. We evaluated the near-term prospects of the issuer and the analyst reports in relation to the severity and duration of impairment. Based on that evaluation and our ability and intent to hold the investments for a reasonable period of time sufficient for a recovery of fair value, we do not consider the investments to be other-than-temporarily impaired as of March 31, 2018.

Impairment of investments in certain marketable equity securities and nonmarketable equity securities, including funds, included in “Other income (expenses)” in our consolidated statements of income, were recognized to reflect the decline in value considered to be other-than-temporary. We recognized an impairment loss of ¥31 million on marketable equity securities for the year ended March 31, 2017, and ¥110 million on nonmarketable equity securities for the year ended March 31, 2018.

In addition to investments in securities, we also have investments in equities for which we have significant influence over the investee’s operations and financial positions and are accounted for by the equity method. For other-than-temporary declines in the value of such investments below the carrying amount, the investment is reduced to fair value and an impairment loss is recognized.

Pension benefits costs

Employee pension benefit costs and obligations are dependent on certain assumptions including discount rate, retirement rate and rate of increase in compensation levels, which are based upon current statistical data, as well as the expected long-term rate of return on plan assets and other factors. Specifically, the discount rate and expected long-term rate of return on assets are two critical assumptions in the determination of periodic pension cost and pension liabilities. Assumptions are evaluated at least annually and when events occur or circumstances change which could have a significant effect on these critical assumptions. In accordance with U.S. GAAP, actual results that differ from the assumptions are accumulated and amortized over future periods. Therefore, actual results generally affect recognized expenses and the recorded obligations for pensions in future periods. While management believes that the assumptions used are appropriate, differences in actual experience or changes in assumptions may affect our pension obligations and future expenses.

We used a discount rate of 0.8% for the projected benefit obligation as of March 31, 2018. The discount rate was determined by using the market yield of high-quality fixed income securities reflecting the estimated timing of benefit payments.

We used an expected long-term rate of return on pension plan assets of 2.9% as of March 31, 2018. To determine the expected long-term rate of return on pension plan assets, we consider a combination of historical returns and prospective return assumptions derived from the pension trust funds’ managing company. The actual return on the pension plan assets for the year ended March 31, 2018 was 3.6%.

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The following table illustrates the sensitivity to a change in the discount rate and the expected return on pension plan assets, while holding all other assumptions constant, for our pension plan as of March 31, 2018.

Change in Assumption	Pre-Tax PBO		Pension Expense		Equity (Net of Tax)
	(millions of yen)
50 basis point increase/decrease in discount rate		(535)/581		(36)/65		24/(44)
50 basis point increase/decrease in expected return on assets		–		(21)/21		–/(14)

Stock Based Compensation

The Company measures and records the compensation cost from stock compensation-type stock options based on the fair value. The fair value of the stock option is measured on the date of grant using the Black-Scholes option-pricing model, and amortized over the requisite service period. The compensation cost is mainly included in “General and administrative” expense.

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New Accounting Guidance

In July 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory,” which applies to inventory that is measured using the first-in, first-out method (“FIFO”) or average cost methods. Under the updated guidance, an entity should measure inventory within the scope of the guidance at the lower of cost or net realizable value, which is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using the last-in, first-out method (“LIFO”). This ASU is effective for annual and interim periods beginning after December 15, 2016 and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Company adopted this ASU in the first quarter beginning April 1, 2017. The adoption of this ASU did not have a material impact on the Company’s financial position or results of operations.

In November 2015, the FASB issued ASU 2015-17, “Balance Sheet Classification of Deferred Taxes (Topic 740)” which changes how deferred taxes are classified on our balance sheets. This ASU requires all deferred tax assets and liabilities to be classified as non-current. This ASU is effective for annual and interim periods beginning after December 15. 2016, with early adoption permitted. The Company adopted this ASU in the first quarter beginning April 1, 2017 with prospective application. Prior periods were not retrospectively adjusted. Current deferred tax assets and liabilities included in the consolidated balance sheets as of March 31, 2017 are ¥1,298,469 thousand and ¥108,994 thousand, respectively.

Accounting Guidance Issued But Not Adopted as of March 31, 2018

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. This guidance also requires an entity to improve disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

ASU 2015-14, “Revenue from Contracts with Customers: Deferral of the Effective Date,” which was issued in August 2015, revised the effective date for ASU 2014-09 to annual and interim periods beginning after December 15, 2017, with early adoption permitted, but not earlier than the original effective date of annual and interim periods beginning after December 15, 2016, for public entities.

In March 2016, the FASB issued ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)," which is an amendment to the ASU 2014-09 on assessing whether an entity is a principal or an agent in a revenue transaction. This amendment addresses implementation issues that were discussed by the Revenue Recognition Transition Resource Group ("TRG") to clarify the principal versus agent assessment and provide for a more consistent application. This new standard has the same effective date and transition requirements as ASU 2014-09. The guidance permits two methods of adoption. The Company currently plans to adopt the standard using the“modified retrospective method.” Under that method, the Company will apply the rules to all contracts existing as of April 1, 2018, recognizing in beginning retained earnings an adjustment for the cumulative effect of the change and providing additional disclosures comparing results to previous accounting standards.

The Company expects revenue recognition for its broad portfolio of hardware, software and services to remain largely unchanged. However, the guidance is expected to change the allocation of contract revenues between various services and equipment and the timing of revenue recognition for certain nonrefundable upfront fees.

Although the Company expenses sales commissions as incurred, the requirements in the new standard to capitalize certain in-scope sales commissions will not result in a significant change to the Company’s results. However, the requirement to defer such incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of a deferred charge on the Company’s balance sheets.

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The Company is in the process of finalizing the assessment of the impact of adopting this guidance and expects that the adoption will not have a material impact on the Company’s results of operations and financial position.

In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities," which amends the guidance in U.S. GAAP on the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, the ASU clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The new standard is effective for fiscal years and interim periods beginning after December 15, 2017, and upon adoption, an entity should apply the amendments by means of a cumulative effect adjustment to the balance sheet at the beginning of the first reporting period in which the guidance is effective. Early adoption is not permitted, except for the provision to record fair value changes for financial liabilities under the fair value option resulting from instrument-specific credit risk in other comprehensive income. The Company anticipates that the adoption of this guidance will increase the volatility of the Company’s other income (expenses), resulting from the remeasurement of the Company’s equity securities.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognizes assets and liabilities for leases with lease terms of more than twelve months and the recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases. Lessor accounting remains largely unchanged from current U.S. GAAP, but does contain some targeted improvements to align with the new revenue recognition guidance issued in 2014. ASU 2016-02 is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018, using a modified retrospective approach, and early adoption is permitted. The Company is currently evaluating the impact of adopting this guidance.

In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," which addresses the diversity of practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows with respect to eight specific cash flow issues. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company is currently evaluating the impact of adopting this guidance.

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B. Liquidity and Capital Resources

Liquidity and Capital Requirements

Our principal capital and liquidity needs in recent years have been for capital expenditures for the development, expansion and maintenance of our network infrastructure, lease payments, payment for acquisition of a land, payment of principal and interest on outstanding borrowings, investments in group companies and other working capital. In our opinion, our working capital is sufficient for our present requirements.

Capital Expenditures. Most of our capital expenditures relate primarily to the development, expansion and maintenance of our network and service infrastructures, our internal back-office systems, and software development. The investments are mostly for routers, servers, network equipment, container-type data centers, other facilities necessary to offer services on our network and software. The table below shows our capital expenditures, which we define as amounts paid for purchases of property and equipment plus acquisition of assets by entering into capital leases, for the last three fiscal years. Capital expenditures for the fiscal year ended March 31, 2018 were larger than the fiscal years ended March 31, 2016 and 2017, mainly because there were increases in capital expenditures, including capitalized leases for facilities and equipment related to service developments, such as for security and mobile services, and back-office related capital expenditures in the fiscal year ended March 31, 2018 compared to the fiscal years ended March 31, 2016 and 2017.

	For the fiscal year ended March 31,
	2016		2017		2018
	(millions of yen)
Capital expenditures, including capitalized leases (*)	¥	14,812	¥	16,531	¥	20,828

_________________

(*) Further information regarding capital expenditures, including capitalized leases and a reconciliation to the most directly comparable U.S. GAAP financial measure, can be found in Item 3.A., “Selected Financial Data— Reconciliation of the Disclosed Non-GAAP Financial Measures to the Most Directly Comparable GAAP Financial Measures.”

We expect that our capital expenditures, including capitalized leases, for the fiscal year ending March 31, 2019 related to our network services and systems integration business will be slightly smaller than the amount for the fiscal year ended March 31, 2018. While the capital expenditure for the fiscal year ended March 31, 2018 includes approximately ¥1.2 billion for the acquisition of land for our own new data center as well as approximately ¥3 billion of capital expenditures for cloud service facility in Western Japan for usage from the fiscal year ending March 31, 2019, we plan to start constructing our own data center capital expenditures attributed to which in the fiscal year ending March 31, 2019 are estimated to be approximately ¥3.0 billion. The usual expansion and improvement of our existing network and service development is expended to be essentially unchanged from the fiscal year ended March 31, 2018.

We recorded a loss on disposal of property and equipment of ¥66 million, ¥171 million, and ¥112 million for the fiscal years ended March 31, 2016, 2017, and 2018, respectively.

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Lease payments. We have operating lease agreements with telecommunications carriers and others for the use of connectivity lines, including local access lines that customers use to connect to our network. The leases for domestic and international backbone connectivity are generally non-cancelable for a minimum one-year lease period. We also lease our office premises, for which refundable lease deposits are capitalized as guarantee deposits, certain office equipment under non-cancelable operating leases, and its network operation centers under non-cancelable operating leases which expire on various dates through the year 2023. Lease expenses related to the backbone lines for the fiscal years ended March 31, 2016, 2017, and 2018 amounted to ¥3.6 billion, ¥3.4 billion and ¥3.3 billion, respectively. Lease expenses for local access lines, which are mainly attributable to Internet connectivity services and WAN services, for the fiscal years ended March 31, 2016, 2017, and 2018 amounted to ¥23.0 billion, ¥24.8 billion and ¥27.6 billion, respectively. Other lease expenses for the fiscal years ended March 31, 2016, 2017, and 2018 amounted to ¥6.9 billion, ¥7.1 billion and ¥7.6 billion, respectively.

We conduct our connectivity and other services, including cloud computing services by using data communications and other equipment leased under capital lease arrangements.

We sold ATM and data communications equipment procured from a third-party vendor, which amounted to ¥3.6 billion and ¥3.2 billion, to the leasing company for the years ended March 31, 2017 and 2018, respectively, and concurrently entered into capital lease arrangements to lease the equipment back, which resulted in total lease payments of ¥3.6 billion due by March 2022 and ¥3.1 billion due by March 2023, related to the lease contracts entered into during the year ended March 31, 2017 and 2018, respectively.

The fair value of the assets upon execution of the capital lease agreements and accumulated depreciation amounted to ¥32.9 billion and ¥19.7 billion as of March 31, 2017 and ¥35.8 billion and ¥21.3 billion as of March 31, 2018, respectively.

As of March 31, 2018, the future lease payments under non-cancelable operating leases, including the aforementioned non-cancelable connectivity lease agreements (but excluding dedicated access lines which we charge outright to customers), and capital leases were as follows:

					Payments due by period
					(millions of yen)
	Total contractual amount		Less than 1 year		1 to 3 years		3 to 5 years		More than 5 years
Connectivity lines operating leases	¥	849	¥	586	¥	263		–		–
Other operating leases		5,642		3,467		1,689	¥	365	¥	121
Capital leases		17,056		5,885		8,630		2,541		–
Total minimum lease payments (1)	¥	23,547	¥	9,938	¥	10,582	¥	2,906	¥	121

_________________

(1) See Note 9 “Leases” to our consolidated financial statements included in this annual report on Form 20-F.

Payments of principal and interest on outstanding borrowings. We require cash for payments of interest and principal on our outstanding borrowings.

Short-term borrowings. As of March 31, 2018, our short-term borrowings consisting of bank overdrafts were ¥9.3 billion. The weighted-average interest rate of our short-term borrowings at March 31, 2018 was 0.411%. Our short-term borrowings as of March 31, 2018 stayed the same as the balance of March 31, 2017. Our unused balance under our bank overdraft agreements, uncommitted, was ¥10.5 billion in short-term borrowings as of March 31, 2018.

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Long-term borrowings. As of March 31, 2018, we had ¥15.5 billion of outstanding long-term borrowings, all of which were non-current portions and which consisted of unsecured, fixed interest rate loans from banks of ¥15.5 billion with a weighted-average interest rate of 0.488%.

Annual maturities of long-term borrowings outstanding as of March 31, 2018 were as follows:

Fiscal year ending March 31	Millions of yen
2020	¥	1,500
2021		1,830
2022		5,170
2023		1,500
2024		2,000
2025		3,500
Total	¥	15,500

Collateral for borrowings. Substantially all of our short-term and long-term borrowings are made under agreements which, as is customary in Japan, provide that under certain conditions the banks may require us to provide collateral or guarantees with respect to the borrowings. We did not provide banks with any collateral for outstanding loans as of March 31, 2017 and 2018. Our primary banking relationships are with Bank of Tokyo-Mitsubishi UFJ, Ltd., Mizuho Bank, Ltd., Sumitomo Mitsui Banking Corporation and Mitsubishi UFJ Trust and Banking Corporation. The banks are also shareholders and customers of ours.

Investments in current and former group companies. In the past, we have made substantial investments in current and former group companies. We may need to provide additional investment in our group companies to enhance or maintain our business synergy with our affiliated companies in the future. See Item 4.B., “Our Group Companies” for information on investment in equity method investees.

Working capital needs. Our principal working capital requirements are for payments for our domestic and international backbone, local access lines, mobile bandwidth, network equipment, software and systems integration. We also require working capital requirements for personnel expenses, office rents and other operating expenses.

Capital Resources

We seek to manage our capital resources and liquidity to provide sufficient funds for current and future financial obligations. We have traditionally met our capital and liquidity requirements through cash flows from operating activities, long-term and short-term borrowings from financial institutions, capital leases and issuances of equity securities. As of March 31, 2018, we had cash and cash equivalents of ¥21.4 billion.

Short-term and long-term borrowings. Short-term and long-term borrowings provide us with an important source for maintaining an adequate level of working capital, acquisition of fixed assets and investments. We plan to refinance our short-term borrowings or use the unused balance outstanding of ¥10.5 billion, uncommitted, as of March 31, 2018 under the bank overdraft agreement for maintaining adequate level of working capital, acquisition of fixed assets and investments. See — “Payments of principal and interest on outstanding borrowings” above.

Cash flows from operating activities. We generated ¥13.3 billion by operating activities for the year ended March 31, 2018. See — “Cash Flows” below.

Capital leases. Capital leases also provide us with an important source of financing. See Note 9 “Leases” to our consolidated financial statements included in this annual report on Form 20-F.

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Cash Flows

We had cash and cash equivalents of ¥21.4 billion at March 31, 2018 compared to ¥22.0 billion at March 31, 2017.

The following table presents information about our cash flows during the fiscal years ended March 31, 2016, 2017 and 2018:

	Fiscal year ended March 31,
	2016			2017			2018
	(millions of yen)
Net cash provided by operating activities	¥	12,051		¥	7,368		¥	13,261
Net cash used in investing activities		(8,377	)		(7,376	)		(13,037	)
Net cash provided by (used in) financing activities		(5,201	)		2,492			(748	)
Effect of exchange rate changes on cash and cash equivalents		2			(94	)		(32	)
Net increase (decrease) in cash and cash equivalents		(1,525	)		2,390			(556	)
Cash and cash equivalents at beginning of the year		21,094			19,569			21,959
Cash and cash equivalents at end of the year	¥	19,569		¥	21,959		¥	21,403

The Fiscal Year Ended March 31, 2018 Compared to the Fiscal Year Ended March 31,2017

Net cash provided by operating activities for the fiscal year ended March 31, 2018 was ¥13.3 billion, an increase of ¥5.9 billion from ¥7.4 billion for the previous fiscal year. Net income for the fiscal year ended March 31, 2018 increased by ¥1.9 billion from the previous fiscal year. As adjustments to reconcile net income to net cash provided by operating activities, depreciation and amortization increased by ¥1.5 billion from the previous fiscal year resulting from our recent years’ business investment enhancements, and net gain on sales of other investments for the fiscal year ended March 31, 2018 increased by ¥0.9 billion from the previous fiscal year. The net changes in operating assets and liabilities resulted in a positive impact of ¥3.5 billion compared to the previous fiscal year. The positive impact mainly included the following: a decrease of prepaid expenses of ¥2.0 billion; a decrease in inventories of ¥1.9 billion; an increase in income taxes payable and accrued expenses of ¥1.4 billion in total; an increase in accounts receivable of ¥1.1 billion; and a decrease of deferred income (current and non-current) of ¥1.0 billion, compared to the previous year.

Net cash used in investing activities for the fiscal year ended March 31, 2018 was ¥13.0 billion, an increase of ¥5.6 billion from ¥7.4 billion for the previous fiscal year. The change mainly resulted from the following factors: an increase in payment for property and equipment of ¥5.1 billion; an increase of investment in equity method investees of ¥1.9 billion; and an increase of proceeds from available-for-sale securities of ¥1.2 billion, compared to each for the previous fiscal year.

Net cash used in financing activities for the fiscal year ended March 31, 2018 was ¥0.7 billion, a decrease of ¥3.2 billion from net cash provided by financing activities of ¥2.5 billion for the previous fiscal year. The change mainly resulted from the following factors: a decrease in net proceeds from borrowings of ¥1.7 billion; an increase in principal payments under capital leases of ¥0.9 billion; and an increase in payments of long-term accounts payable of ¥0.5 billion, compared to each for the previous fiscal year.

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The Fiscal Year Ended March 31, 2017 Compared to the Fiscal Year Ended March 31, 2016

Net cash provided by operating activities for the fiscal year ended March 31, 2017 was ¥7.4 billion, a decrease of ¥4.7 billion from ¥12.1 billion for the previous fiscal year. Net income for the fiscal year ended March 31, 2017 decreased by ¥0.9 billion from the previous fiscal year, and depreciation and amortization increased by ¥1.0 billion from the previous fiscal year, which is due to our recent years’ business investment enhancements. However, the net changes in operating assets and liabilities resulted in a negative impact of ¥4.6 billion compared to the previous fiscal year. The negative impact mainly included the following: an increase in accounts receivable of ¥2.2 billion; an increase in prepaid expenses of ¥1.8 billion related to the payment for systems integration projects and the payment of licensing fees along with revenue growth and service development, compared to the previous year.

Net cash used in investing activities for the fiscal year ended March 31, 2017 was ¥7.4 billion, a decrease of ¥1.0 billion from ¥8.4 billion for the previous fiscal year. The decrease mainly reflects the following factors: an increase in proceeds from sales of property and equipment of ¥0.5 billion; a decrease in payments for purchase of property and equipment of ¥0.3 billion; and a decrease in payments of guarantee deposits of ¥0.3 billion due to expansion of our office space in the previous year.

Net cash provided by financing activities for the fiscal year ended March 31, 2017 was ¥2.5 billion, an increase of ¥7.7 billion from net cash used in financing activities of ¥5.2 billion for the previous fiscal year. The change mainly resulted from an increase in proceeds from long-term borrowings of ¥8.5 billion, and an increase in proceeds from resulting from long-term accounts payable of ¥1.5 billion, offset by an increase in payments for purchase of treasury stock of ¥1.5 billion and an increase in principal payments under capital leases of ¥0.6 billion.

Contingencies

We did not have any material contingent liabilities as of March 31, 2018.

C. Research and Development, Patents and Licenses, etc.

See the information in Item 4.B., “Business Overview — Research and Development Strategy.”

D. Trend Information

Factors Affecting Our Future Financial Results

We expect that the following are the most significant factors likely to affect our financial results and those of our consolidated subsidiaries. You should also consult Item 3.D. “Risk Factors” and the other portions of this annual report on Form 20-F for additional factors affecting our financial results.

Revenues

We have two business segments: a network services and systems integration business segment and an ATM operation business segment. The network services and systems integration business segment is comprised of Internet connectivity services, WAN services, outsourcing services, systems integration and equipment sales.

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Network services revenues

Network services revenues consist of our revenues from Internet connectivity services for enterprise, Internet connectivity services for consumers, WAN services and outsourcing services. Our network services revenues accounted for 56.4%, 58.9% and 61.4% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018 respectively. As our Internet connectivity services for enterprise and WAN services customers are more likely to use our outsourcing services or systems integration along with their needs for comprehensive network expands, Internet connectivity services for enterprise and WAN services are important for the growth of our outsourcing services or systems integration business.

Internet connectivity services for enterprise

Our revenues from Internet connectivity services for enterprise accounted for 12.5%, 14.3% and 15.9% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018 respectively. Revenues from Internet connectivity services for enterprise basically depend on the size of our customer base, the average contracted bandwidth and the unit price of our services. The market for Internet connectivity services for enterprise generally follows the trends written below:

Increase in contracted bandwidth. Total contracted bandwidth for Internet connectivity services for enterprise customers increased to 3,117.7Gbps as of March 31, 2018 from 2,773.3Gbps for the previous fiscal year end. The number of IP service contracts for the bandwidth over 100 Mbps increased to 1,126 for the fiscal year ended March 31, 2018 from 1,028 for the previous fiscal year end. This increase is mainly due to an increase in customers' demand for broader bandwidth for their Internet connectivity. The total contracted bandwidth for Internet connectivity services for enterprise is calculated by adding the contracted bandwidth for each of the following services: IP services, IIJ data center connectivity services and broadband services. Although we do not expect revenue per contract to grow largely in the fiscal year ending March 31, 2019 due to continuing competition, we believe that customer demand for broader bandwidth should continue as the use of broadband by corporate customers expands. We expect Internet traffic generated by CDN services to increase in the fiscal year ending March 31, 2019 as our equity method investee, JOCDN starts to provide CDN services to a large content provider and continue to provide CDN services to major Japanese broadcasting companies. We also try to acquire new customers and increase the bandwidth of existing customers as well as maintain the quality of our services to differentiate them from those of our competitors.

Increasing demand for mobile data communications services. Demand for our mobile data communications service for enterprise called IIJ Mobile Service, which is provided under an MVNO scheme, has increased since its introduction in January 2008. IIJ Mobile Service’s subscriptions increased to 1,339,586 as of March 31, 2018 from 857,903 for the previous fiscal year end. The increase is mainly due to subscription accumulation through our MVNE clients as well as M2M and IoT type projects. We target corporate customers who are security conscious and looking for data communication services with strong security features such as VPN access and private access. Demands related to M2M connectivity and IoT are expected to increase. To capture the demand, we have developed related service line-ups.

Increasing demands for MVNE transaction. We started “IIJ Mobile MVNO Platform Services” under which we operate as MVNE by providing our MVNO service platform to corporate customers so that they can incorporate MVNO services in their businesses. The related subscriptions, which are included in IIJ Mobile Services subscriptions, increased to approximately 825 thousand as of March 31, 2018 from approximately 582 thousand for the previous fiscal year end. MVNE revenue accounted for 28.5% and 38.9% of our Internet connectivity services for enterprise for the fiscal years ended March 31, 2017 and 2018, respectively. The number of MVNE clients as of March 31, 2018 was 137, which includes 85 cable TV operators nationwide, an increase of 13 clients from the previous fiscal year end. Most of the clients are cable television operators which sell our inexpensive SIM cards together with their services such as ISP services to individual households all over Japan.

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Continuous demand for broadband services. Demand for broadband services such as IIJ FiberAccess/F, IIJ DSL/F and IIJ DSL/A is steady as the services are used to connect corporate branches and remote offices. For access lines, the services use optical lines with a maximum speed of 1Gbps. The number of contracts for our broadband services was 72,630 as of March 31, 2018 compared to 72,605 for the previous fiscal year end. We expect demand for broadband services should contribute to an increase in our outsourcing services and systems integration revenues as usage and implementation of these connectivity services increase the demand for outsourcing services such as security services and network systems integration.

Although we do not expect prices of Internet connectivity services for enterprise to increase in the fiscal year ending March 31, 2018, we anticipate that corporate customers’ demand for broader bandwidth and mobile data communications services should contribute to our revenue growth as the use of broadband and mobile data communications by corporate customers expands, especially our MVNO-platform services which enables companies to offer MVNO services. We also plan to focus on acquiring new customers as well as increasing the bandwidth of existing customers by maintaining the quality of our services to differentiate them from those of our competitors.

Internet Connectivity services for consumers

Our revenues from Internet connectivity services for consumers accounted for 10.8%, 13.8% and 14.1% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. Revenues from Internet connectivity services for consumers mainly depend on the size of our customer base and pricing. The size of our customer base depends primarily on the popularity of services under our brand name, our sales partners as well as the attractiveness of our service offerings which is measured primarily by pricing, the quality of service, and our ability to attract new customers. Internet connectivity services for consumers’ subscriptions decreased to 1,363,531 as of March 31, 2018 from 1,409,259 for the previous fiscal year end. The decrease is mainly because we sold all shares of hi-ho, our former consolidated subsidiary whose main business was fixed line Internet connectivity services for consumers, on December 31, 2017. Our mobile services for consumers contributed to the increase in the number of subscriptions.

Increasing demands for mobile services for consumers. From February 2012, we started to provide mobile services to consumers by using our MVNO service infrastructure, which was formerly provided only to corporate customers. The revenue from this service increased to ¥20.7 billion for the fiscal year ended March 31, 2018 from ¥17.1 billion for the previous fiscal year. The subscriptions for this service increased to 1,005 thousand as of March 31, 2018 from 951 thousand for the previous fiscal year end. We offer inexpensive LTE SIM cards which are inserted to individual smart phones and portable devices. We started to offer voice call function in April 2014 with an expectation that it would generate more subscriptions. From October 2014, we started to provide prepaid SIM cards to foreign tourists visiting Japan. These SIM cards are sold at convenience stores, major electronics retail stores, department stores, and airports. Since the inexpensive LTE SIM card market is relatively new in Japan, we are uncertain about the extent of how much the market will expand and the timeframe of that expansion. According to the report published by the MIC, 7.1% of the total Japanese mobile subscriptions were using inexpensive SIM card services as of December 31, 2017. We anticipate our mobile-related revenue to increase largely for a while along with the market expansion. Our revenue can fluctuate as consumer market trends tend to change rapidly.

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General trends of Internet connectivity services for consumers. We offer our Internet connectivity services for consumers not only directly, but also through sales partners including Excite Japan Co., Ltd. and so on. These service providers sell Internet connectivity services to consumers under their own name but they are using our Internet network infrastructure to provide such services. From March 2015, we started to offer “IIJmio Hikari,” which is a bundled service packaging optical fiber broadband service with ISP services. IIJmio Hikari is replacing our conventional Internet connectivity services for consumers. We also offer our mobile services for consumers as an optional service for IIJmio Hikari with some monthly charge discount.

WAN services

Our revenues from WAN services accounted for 17.9%, 16.8% and 16.6% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. Demand for WAN services is relatively stable with continuous use by certain large clients who use the services to connect corporate mission critical systems. Such transaction volume tends to be large and unit prices tend to be higher than our other network services. Therefore, revenues can fluctuate significantly with the absence or addition of such large orders. Accordingly, future revenue is difficult to forecast.

Outsourcing Services

Our revenues from outsourcing services accounted for 15.1%, 14.0% and 14.8% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. Outsourcing services consist of network-related services, server-related services, security-related services, data center-related facility services and operation and management services, and some services of our cloud computing services. For the fiscal year ended March 31, 2018, outsourcing services revenues increased to ¥26.1 billion from ¥22.2 billion for the fiscal year ended March 31, 2017 mainly because security-related service revenue grew by 26.2% from the previous fiscal year. The increase in demand for security services is due to an increasing number of Japanese enterprises becoming security conscious about their IT systems triggered by the number of recent security incidents, such as targeted and DDoS attacks on Japanese business enterprises and public sector entities. The demands for DDoS protection services, firewall services with a sandbox function and virtual desktop services in particular are increasing. We expect that corporate customers will continue to increase their use of the Internet as a business tool and will increasingly rely on an expanding range of outsourcing services to enhance productivity, reduce costs and improve service reliability. We believe our public cloud computing services will contribute to the revenue growth for the middle-to long-term although we also expect the current weak growth pace to continue for a while.

Systems integration revenues, including related equipment sales revenues

Our systems integration revenue consists of systems construction and systems operation and maintenance.

Systems construction, which is a one-time revenue, accounted for 15.0%, 14.3% and 12.8% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. Systems construction revenues, including related equipment sales revenues for the fiscal year ended March 31, 2018 was essentially unchanged from the previous fiscal year because system engineers resources were concentrated on a particularly large project, which led to a weak sales activity and order accumulation for the latter half of the fiscal year, and in the fiscal year ended March 31, 2017.

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Systems operation and maintenance, which is a monthly recurring revenue, accounted for 23.5%, 22.3% and 21.5% for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. Revenue for our private-type cloud computing services is included in the systems operation and maintenance revenues. Systems operation and maintenance revenues for the fiscal year ended March 31, 2018 increased by 7.9% compared to the previous fiscal year mainly because many of the accumulated systems construction projects have been shifted to the operation. Excluding the revenue growth from our private-type cloud computing services, systems operation and maintenance revenues increased by 4.8% compared to the previous fiscal year. For the fiscal year ended March 31, 2018, we recognized 86.4% of our cloud computing service revenues in systems operation and maintenance and 13.6% was recognized in outsourcing services.

For the fiscal year ended March 31, 2018, our cloud computing services revenues were ¥17.9 billion, an increase of approximately ¥2.3 billion from the previous fiscal year, and for the fiscal year ending March 31, 2019, we target approximately ¥20.0 billion in revenue. In November 2015, we launched “IIJ GIO Infrastructure P2,” targeting Japanese enterprises that seek to migrate their core business platform systems to the cloud by offering a reliable public cloud computing infrastructure with increased processing performance, as well as a private cloud computing infrastructure.

For the fiscal year ending March 31, 2019, we should continue to see a strong appetite for IT investments along with favorable market situations. As systems integration revenues can fluctuate significantly in accordance with the absence or addition of large orders, they are accordingly difficult to forecast. For systems operation and maintenance revenues, we anticipate that we can increase them from the increase in systems construction revenue which should migrate to systems operation and maintenance as well as accumulation of our cloud computing services orders. In the middle-to long-term, we anticipate that Japanese companies should increase IT-related investments for their network systems when the general economic situation and the business results of the Japanese companies recover. While we anticipate the cloud computing market to continue to expand in Japan, our cloud computing services might replace hardware revenues, which are a part of systems construction revenues, which could result in a decrease in systems construction revenues in the middle-to long-term.

Equipment sales revenues

Our equipment sales revenues consist primarily of sales of networking and other related equipment as requested by our customers, other than that provided in connection with our systems integration services. We are seeing an increase in portable devices and smartphone orders along with increasing needs for mobile services for both enterprise and consumer. Our equipment sales revenues accounted for 2.3%, 1.9% and 2.0% of our total revenues for the fiscal years ended March 31, 2016, 2017, and 2018, respectively.

ATM Operation Business revenues

The ATM operation business revenues consist primarily of commission fees for each withdrawal transaction with the use of ATMs. ATM commission fees collected from each withdrawal are aggregated every month and recognized as ATM operation business revenues. The number of daily withdrawing transactions for the fiscal year ended March 31, 2018 stayed almost the same as the previous fiscal year. Our ATM operation business revenues and its percentage of our total revenue was ¥3.9 billion, ¥4.1 billion and ¥4.0 billion and 2.8%, 2.6% and 2.3% for the fiscal years ended March 31, 2016, 2017, and 2018, respectively. The number of placed ATMs as of March 31, 2018 was 1,096, an increase of 30 ATMs from the previous fiscal year end. We may see a continuous decrease in the number of daily transaction due, for example, to a decrease in the number of pachinko players as the Japanese population declines or to a decrease in consumer demand prompted by an increase in the Japanese consumption tax rate.

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Additional factors affecting revenues

A number of other factors may affect demand for our services and in turn our revenues, including overall increases in the business usage of Internet and network solutions and our range of service offerings.

Increase in business usage: Our revenues will be affected by the extent and speed with which businesses in Japan utilize Internet and network solutions to their full potential, including, for example, electronic transactions between businesses and wider ranges of devices accessing the Internet. Such services require high-quality and high-capacity connectivity services for both businesses and individuals. Such services also require total network solutions including various Internet connectivity services, systems integration and other outsourcing services which we believe we are well positioned to provide. The degree of business usage will also depend upon a variety of factors including:

· technological advances, reliability of security systems and users’ familiarity with and confidence in new technologies,

· the rate at which Japanese companies in certain industries significantly increases their Internet usage, and

· corporate budgets for information technologies, including Internet-related items.

Range of service offerings: To increase our revenues from business users, we provide a wide variety of services and continue to introduce new services. For Internet connectivity services, we have introduced LTE services as an addition to our mobile services. For cloud computing services, in November 2015, we launched a new service platform “IIJ GIO Infrastructure P2” which offers reliable public cloud infrastructure with increased processing performance and private cloud infrastructure. For network services for enterprise, from July 2015, we started to offer “IIJ Omnibus Service” which incorporates SDN and NFV technologies to offer several network elements automatically. We anticipate these steps will allow us to sell a greater variety of services to our high-end corporate users and to meet Japanese enterprises’ IT needs. However, we will still be strongly dependent on the Japanese economy and on Japanese companies and their information technology budgets. We expect Internet usage to continue to grow in Japan and that businesses will continue to diversify their uses of the Internet. Our ability to develop and offer a broad range of services to meet our customers’ demands will significantly influence our future revenues.

Synergies between network services and systems integration: Most of our systems integration customers come from our Internet connectivity services customers, and we expect these relationships to continue. As part of our systems integration business, we offer solution services for corporate information network systems, consultation, project planning, system design and systems/operation outsourcing or Internet VPN solution services which combine the FLET’S Internet connectivity or mobile connectivity services with SEIL, adopted by customers who have multiple locations, such as branches, offices and factories. Cloud computing services and security-related services are also provided together with connectivity and systems integration services. The ability to introduce a wide range of services, including solutions necessary to build corporate information network systems, like disaster recovery services and Internet VPN, Voice over IP (“VoIP”), SEIL, private mobile access solutions, SEIL/SMF and wireless LAN service, is an important competitive factor.

Synergies between the Group companies: The Group works together as a team to provide network solutions to our customers, mainly corporate and governmental organizations.

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Overseas business: The Group is enhancing its overseas operations mainly to fulfill the broad range of IT network related needs of our Japanese customers that are headed abroad to expand their overseas business. As a group, we aim to expand our cloud computing related services and overseas business by leveraging our customer base and our engineering skills. However, our overseas business portion is still relatively small. For the fiscal year ended March 31, 2018, our overseas revenue, which is mainly recognized in systems integration revenue, was approximately ¥6.1 billion, compared to approximately ¥6.4 billion of the previous year, and we recorded positive operating income, compared to an operating loss of approximately ¥0.2 billion of the previous year. For the fiscal year ending March 31, 2019, we target overseas business revenue of approximately ¥7.0 billion and operating income of approximately ¥0.1 billion.

Costs and expenses

Costs and expenses include cost of network services revenues, cost of systems integration revenues, cost of equipment sales revenues, cost of ATM operation business revenues, sales and marketing expenses, general and administrative expenses and research and development expenses.

Cost of network services revenues

Our primary cost of network services revenues is the leasing fees that we pay for the leased lines which comprise our network and for the dedicated local access lines that our subscribers use to connect with our network. Other primary components of our costs are leasing fees that we pay for MVNO service infrastructure, depreciation and amortization of capital leases for network equipment, personnel and other costs for technical and customer support staff and network operation center related costs. Most of our network equipment is leased rather than purchased to take advantage of the financing provided by a capital lease arrangement.

We have made continuous investments in past years to develop and expand our network along with our business expansion. For the fiscal year ended March 31, 2018, our leased lines and other connectivity costs were ¥31.4 billion or 29.0% of our total network services revenues. For the previous fiscal year, these costs were ¥28.5 billion or 30.7% of total our network services revenues.

· Backbone cost: Backbone cost for the fiscal year ended March 31, 2018 was ¥3.3 billion, a slight decrease compared to the fiscal year ended March 31, 2017. We do not expect our backbone costs to significantly increase.

· Dedicated local access line costs: We collect dedicated local access line fees from subscribers and pay these fees over to the carriers. Dedicated local access line costs for the fiscal year ended March 31, 2018 were ¥27.5 billion compared to ¥24.6 billion for the fiscal year ended March 31, 2017. Other connectivity costs were ¥0.6 billion for the fiscal year ended March 31, 2018, compared to ¥0.5 billion for the previous fiscal year.

Depreciation and amortization cost related to network service revenues increased by ¥0.9 billion to ¥5.9 billion for the fiscal year ended March 31, 2018 from ¥5.0 billion for the fiscal year ended March 31, 2017 along with the increase in capital expenditures related to network service revenues. Along with the increase in capital expenditures, we expect depreciation and amortization to increase.

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The cost of mobile services revenues, most of which is recognized as outsourcing-related costs of network services revenues, has been increasing along with the rapid increase in consumer mobile and MVNE subscriptions. We have been purchasing NTT Docomo’s mobile infrastructure to provide our mobile services and we have been increasing our purchasing volume in order to offer reliable connectivity to our customers, both enterprise and consumer. For the fiscal year ended March 31, 2018, outsourcing-related costs increased by ¥6.2 billion from the previous year mainly due to an increase in purchasing volume of mobile-related service facility including mobile bandwidth from NTT Docomo along with an increase in consumer mobile service subscriptions. NTT Docomo charges a “wholesale telecommunications service charge” to all MVNOs purchasing volume from NTT Docomo, including us. NTT Docomo calculates the unit price in accordance with the “Telecommunications Business Law” and the “Guidelines related to Operation of the Institution for Category II Designated Telecommunications Facilities,” which are both administrated by the MIC. The unit price is a flat-rate per Mbps and is calculated based mainly on NTT Docomo’s actual cost related to its mobile data communication business. In recent years, such unit price decreased by 41.2%, 56.6%, 23.5%, 16.9%, 14.1% and 18.2% annually in the fiscal years 2011, 2012, 2013, 2014, 2015 and 2016 respectively. The corresponding unit price per 10Mbps is approximately ¥2.8 million, approximately ¥1.2 million, approximately ¥0.9 million, approximately ¥0.8 million, approximately ¥0.7 million, and approximately ¥0.6 million in the fiscal years 2011, 2012, 2013, 2014, 2015 and 2016 respectively. As for the unit price fixed in March 2018, the rate of decrease was relative large which is mainly due to NTT Docomo’s cost and we assume that this may have been due to their change in depreciation method from declining-balance to straight line. Amounts we pay to NTT Docomo for our mobile services have been increasing along with the purchasing volume increase, while the unit price itself continues to decrease.

Costs of systems integration revenues and equipment sales

The cost of our systems integration revenues and equipment sales consists of purchasing costs, personnel-related costs, outsourcing-related costs, network operation-related costs and other costs. Purchasing costs increase or decrease in tandem with systems construction revenues and equipment sales revenues. Personnel and outsourcing-related costs are mainly costs of engineering staff. Network operation-related costs are costs such as depreciation and amortization of capital leases for system-related equipment, including facilities and equipment mainly for cloud computing services. The main determinant of whether our gross margin will increase or decrease depends on whether we can secure profit for each systems integration project, whether we are able to adequately control the man-hour for each systems integration project as initially estimated, maintain the productivity of outsourcing personnel, especially system engineers, maintain the profitability of our cloud computing services and whether we are able to achieve enough revenue that covers our total costs. For the fiscal year ending March 31, 2019, as we do not expect systems construction revenue to significantly increase, we expect the costs of systems integration revenues to also not increase significantly. We should continue to focus on controlling personnel and outsourcing costs adequately as well as carefully consider the timing of increasing facilities and equipment for our cloud computing services as they require a large upfront investment.

Costs of ATM Operation Business

The cost of our ATM operation business consists primarily of per-ATM cost such as ATM depreciation, maintenance and network cost, systems development costs, and outsourcing related costs. For the fiscal year ended March 31, 2018, the ATM operation business recorded approximately ¥2.4 billion in costs.

Sales and marketing

Our sales and marketing expenses consist primarily of personnel expenses related to sales and marketing activities, general advertising expenses and sales commission. Our sales and marketing expenses should increase to the extent that we expand our operations, hire additional employees and increase our sales and marketing activities such as promotion of our cloud services and mobile services for consumers. As for the fiscal year ending March 31, 2019, we expect sales commission expenses for our sales channels should increase but not as much as the fiscal year ended March 31, 2018 along with revenue outlook for our mobile services for consumers. Sales and marketing expenses were ¥12.7 billion for the fiscal year ended March 31, 2018, compared to ¥11.4 billion for the previous fiscal year. For the fiscal year ending March 31, 2019, we do not expect any major changes for both sales and marketing expenses and general advertising expenses.

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General and administrative

Our general and administrative expenses primarily include expenses associated with our management, accounting, finance and administrative functions, including personnel expenses. Our general and administrative expenses will increase to the extent that we grow our business and hire new employees. We expect general and administrative expenses to increase in the fiscal year ending March 31, 2019 in accordance with our business growth.

Research and development

Our research and development expenses include primarily expenses associated with personnel expenses related to research and development activities. Our research and development expenses will increase to the extent that we expand our research and development activities. We expect the research and development expenses to slightly increase for the fiscal year ending March 31, 2019.

Other income (expenses)

Our other income and expenses include interest income and expenses and other primary items such as foreign exchange gains or losses, net gain on other investments and impairment losses on other investments.

Interest expense: Most of our interest expense is from capital leases and bank borrowings. Interest income and interest expenses are also affected by the fluctuation of market interest rates and our total amount of outstanding borrowings. As we had the proceeds of long term bank borrowing of ¥7.0 billion in the fiscal year ended March 31, 2018, we expect the interest expense to increase. If we increase capital leases or borrowings in order to finance further development of our backbone, data centers and for other investments, interest expenses will increase.

Foreign exchange gain or loss: Attributed to the stronger Japanese yen against foreign currencies including the U.S. dollar and the British pound, we recognized foreign currency loss of ¥16 million for the fiscal year ended March 31, 2018. The assets held by us which are exposed to foreign currency exchange risk are mainly the U.S. dollar and British pound denominated bank deposits.

Net gain or loss on other investments: We hold other investments comprised of available-for-sale securities, nonmarketable equity securities and funds. Gain or loss on other investments are mostly raised from available-for-sale securities and fund investments. Fluctuations in the fair value of other investments may affect our financial results upon the sale. For the fiscal year ended March 31, 2018, we had net gain on sales of other investments of ¥1,068 million. Unrealized gains on holding available-for-sale equity securities of ¥7.5 billion were measured based on closing prices of March 30, 2018, the final day of trading in the fiscal year ended March 31, 2018. Due to the revision to U.S. GAAP relating to available-for-sale equity securities, the net of tax amount of unrealized gains of ¥5.1 billion were reclassified to retained earnings at the beginning of the fiscal year ending March 31, 2019. Changes in unrealized gains or losses due to fluctuations of stock prices will be recognized in other income (expenses) in every quarter, beginning with our consolidated statements of income from the first quarter of the fiscal year ending March 31, 2019. Therefore, fluctuations of stock prices may impact our consolidated statements of income.

Impairment of other investments: We hold other investments comprised of available-for-sale securities, nonmarketable equity securities and funds. If the fair value of other investments becomes lower than its costs and such decline in fair value is evaluated as other-than-temporary, we will be required to recognize an impairment loss on investment. For the fiscal year ended March 31, 2018, we had impairment loss of other investments of ¥110 million.

E. Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements as is defined for purposes of Item 5.E. of Form 20-F.

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F. Tabular Disclosure of Contractual Obligations

The following table shows our material contractual payment obligations under our agreements as of March 31, 2018:

	Payments due by period (millions of yen)
Contractual Obligations	Total		less than 1 year		1 to 3 years		3 to 5 years		more than 5 years
Long-term debt obligations	¥	15,500		–	¥	8,500	¥	3,500	¥	3,500
Capital lease obligations		17,056	¥	5,885		8,630		2,541		–
Operating lease obligations		6,490		4,052		1,952		365		121
Total (1) (2)	¥	39,046	¥	9,937	¥	19,082	¥	6,406	¥	3,621

_____

(1) The table above does not include short term borrowings. For short term borrowings, see Item 5.B “Liquidity and Capital Resource” and Note 11 “Borrowings” to our consolidated financial statements included in this annual report on Form 20-F.

(2) The table above does not include obligations for interest payments on debt as such payments are not material. For interest payments regarding capital lease, see Note 9 “Leases” to our consolidated financial statements included in this annual report on Form 20-F.

G. Safe Harbor

This annual report contains forward-looking statements about us and our industry that are based on our current expectations, assumptions, estimates and projections. These forward-looking statements are subject to various risks and uncertainties. These statements discuss future expectations, identify strategies, discuss market trends, contain projections of results of our operations and our financial condition, and state other forward-looking information. Known and unknown risks, uncertainties and other factors could cause our actual results to differ materially from those contained in or suggested by any forward-looking statement. We cannot provide any assurance that our expectations, projections, anticipated estimates or other information expressed in these forward-looking statements will turn out to be correct. We do not undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Important risks and factors that could cause our actual results to differ materially from our forward-looking statements are generally provided in Item 3.D. “Risk Factors” and elsewhere in this annual report on Form 20-F and include, without limitation:

· that we may not be able to achieve or sustain profitability in the near future, that we may not be able to compete effectively against competitors which have greater financial, marketing and other resources, and that our investments in our subsidiaries, affiliated companies, new business and service developments may not produce the returns that we expect or may adversely affect our results of operations and financial condition.

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Item 6. Directors, Senior Management and Employees

A. Directors and Senior Management

As of June 29, 2018, the Company's Board of Directors consists of thirteen directors, including five outside directors. The Company's Board of Company Auditors consists of four company auditors, three of whom are outside company auditors, including an attorney from a Japanese law firm and a certified public accountant. Further, the Company has an internal auditing office consisting of three members.

Additionally, we introduced an executive officer system in 2010 with the aim of further enhancing our corporate governance by separating its decision making, supervisory function and business execution function.

There is no family relationship between any director or executive officer and any other director or executive officer. The following table provides information about our directors and company auditors as of June 29, 2018.

Name

Position

Date of birth

Current term expires

Initial appointment date

Number of Shares Owned (1)

Percentage of Shares Owned (1)

Koichi Suzuki

Chairman, Chief Executive Officer and Representative Director

Sep. 3, 1946

June 2019

Dec. 1992

1,826,676

(2)

3.91

%(2)

Eijiro Katsu

President, Chief Operating Officer and Representative Director

June 19, 1950

June 2019

June 2013

26,176

0.06

%

Hideshi Hojo

Senior Managing Director

Dec. 22, 1957

June 2019

June 2000

26,037

0.06

%

Takeshi Kikuchi

Senior Managing Director

Apr. 27, 1959

June 2020

June 2010

59,841

0.13

%

Akihisa Watai

Managing Director, Chief Financial Officer and Chief Accounting Officer

Sep. 30, 1965

June 2020

June 2004

12,868

0.03

%

Tadashi Kawashima

Managing Director

Feb. 27,1963

June 2019

June 2015

1,537

0.00

%

Junichi Shimagami

Director

Apr. 17,1967

June 2019

June 2015

(3)

9,368

0.02

%

Yasurou Tanahashi

Director

Jan. 4, 1941

June 2020

June 2004

0

—

Shingo Oda

Director

Nov. 8, 1944

June 2020

June 2008

0

—

Toshinori Iwasawa

Director

May 8, 1962

June 2019

June 2013

1,241

0.00

%

Tadashi Okamura

Director

July 26,1938

June 2019

June 2015

0

—

Shinobu Umino

Director

Aug. 4, 1952

June 2020

June 2018

0

—

Takashi Tsukamoto

Director

Aug. 2, 1950

June 2019

June 2017

0

—

Kazuhiro Ohira

Company Auditor

Dec. 26, 1957

June 2020

June 2010

0

—

Masako Tanaka

Company Auditor

Apr. 4, 1958

June 2022

June 2018

173,236

0.02

%

Yasuhiro Akatsuka

Company Auditor

Feb. 10, 1947

June 2020

June 2016

0

—

Takashi Michishita

Company Auditor

Feb. 1, 1969

June 2020

June 2016

0

—

_________

(1) The number of IIJ shares owned as of June 29, 2018.

(2) Mr. Koichi Suzuki jointly owns IIJ stocks through his wholly owned private company called KS Holdings which holds 1.73% of the total company outstanding shares as of March 31, 2018.

(3) Mr. Junichi Shimagami was a director of the company from June 2007 to March 2010.
* In March 2018, one of our outside directors, Hiroki Watanabe, resigned for personal reasons.

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Koichi Suzuki is one of the founders of IIJ and has approximately 30 years of experience in the computer and communications industries. He was appointed as president, representative director and Chief Executive Officer in April 1994. In June 2013, he became our chairman, representative director, and Chief Executive Officer. In addition, Mr. Suzuki is chairman of IIJ-America and JOCDN , and president of IIJ-EG and Multifeed. He also serves as a director of IIJ-Global, Trinity, DeCurret　and IIJ-II. From December 1992 to April 1994, Mr. Suzuki was a director of IIJ. Prior to joining us, Mr. Suzuki was employed at Japan Management Association where he served as a general manager.

Eijiro Katsu joined IIJ in November 2012 and was appointed as president, representative director and Chief Operating Officer in June 2013. He also serves as a director of DeCurret. Prior to joining IIJ, he worked at the Ministry of Finance in Japan and serviced as Vice Minister from July 2010 to August 2012.

Hideshi Hojo joined IIJ in 1996. He has served as　a senior managing director of IIJ since June 2006. Mr. Hojo is also a director of i-revo and NCJ. Since April 2014, he has been in charge of the Asian business development. From February 1998 to June 2000, Mr. Hojo acted as general manager of the Sales Division, from June 2000 to June 2002 as a director and from June 2002 to 2006 as a managing director. Prior to joining us, Mr. Hojo had 16 years of experience in the field of sales working for the Itochu Group.

Takeshi Kikuchi was appointed as a senior managing director of IIJ in June 2010 and is serving as a division director in charge of a Business Unit (Sales Divisions). Mr. Kikuchi joined Itochu Corporation in April 1983 and was temporarily seconded to IIJ from April 1996. In July 1999, Mr. Kikuchi joined IIJ-Tech and was president of IIJ-Tech from October 2005 to March 2010.

Akihisa Watai was appointed as a managing director of IIJ in June 2010 and is serving as division director of the Finance Division. Mr. Watai has served as chief financial officer and chief accounting officer since June 2004. In addition, Mr. Watai is a director of NCJ, Trinity, Trust Networks, RYUKOSHA and DeCurret, and a company auditor of i-revo, IIJ-Global and IIJ-II. From June 2004 to March 2010, Mr. Watai served as director of IIJ. Mr. Watai joined The Sumitomo Bank, Limited (currently Sumitomo Mitsui Banking Corporation) in April 1989 and was temporarily seconded to IIJ from August 1996. In February 2000, Mr. Watai joined IIJ permanently and has been general manager of the Finance Division from April 2004 to March 2016.

Tadashi Kawashima has served as a managing director of IIJ since June 2015 and is serving as deputy executive division director in charge of Business Unit (Sales Divisions). Mr. Kawashima joined NTT DATA Corporation in July 1988 and served as Senior Specialist of Public and Financial IT Service Company. Mr. Kawashima served as President and Representative Director of NTT Data Tokai Corporation from June 2013 to June 2015.

Junichi Shimagami has served as a director and Chief Technology Officer of IIJ since June 2015 and is serving as division director in charge of Technology Unit (Technology Divisions) since April 2016. Mr. Shimagami is also a director of Multifeed. Mr. Shimagami served as a director of the Company from June 2007 to March 2010. Mr. Shimagami joined us in 1996. Prior to joining us, Mr. Shimagami worked at Nomura Research Institute, Ltd., which he joined in April 1990.

Yasurou Tanahashi has served as an outside director of IIJ since June 2004. Mr. Tanahashi served as an advisor of NS Solutions Corporation, an affiliated company of Nippon Steel Corporation from June 2007 to June 2009. Mr. Tanahashi had been president and representative director of NS Solutions Corporation since April 2000 and had been chairman of NS Solutions Corporation since April 2003.

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Shingo Oda has served as an outside director of IIJ since June 2008. From May 2005 to November 2007, Mr. Oda was president and representative director of Hewlett-Packard Japan, Ltd. From February 2002 to May 2005, Mr. Oda was vice president and representative director of Hewlett-Packard Japan, Ltd.

Toshinori Iwasawa was appointed as a director of IIJ in June 2013. Mr. Iwasawa has been president and representative director of IIJ-Global since September 2010. Prior to joining IIJ-Global, he was a representative director at AT&T Japan LLC. and worked for IBM Japan from 1985.

Tadashi Okamura has served as an outside director of IIJ since June 2015. Mr. Okamura joined Toshiba Corporation in April 1962, and served as Chief Executive Officer of Toshiba Corporation from June 2000 to June 2005 and as Chairman of Toshiba Corporation from June 2005 to June 2009. Mr. Okamura has been serving as an adviser to the Board of Toshiba Corporation since June 2009 and became an honorary advisor to Toshiba Corporation in June 2016.

Takashi Tsukamoto has served as an outside director of IIJ since June 2017. Mr. Tsukamoto joined Dai-Ichi Kangyo Bank, Ltd. (Currently Mizuho Bank, Ltd.) in April 1974 and served as Chairman of Mizuho Financial Group, Inc. from June 2011 to March 2014　and as a senior adviser of Mizuho Financial Group, Inc. from April 2014 to March 2017. He became an honorary advisor to Mizuho Financial Group, Inc. in April 2017.

Shinobu Umino was appointed as an outside director of IIJ in June 2018. Mr. Umino joined NTT in April 1975 and served as Representative Director and President of NTT COMWARE Corporation from June 2012 to June 2017,and he has been a Chief Executive Adviser of of NTT COMWARE Corporation since June 2017.

Kazuhiro Ohira has been a company auditor of IIJ since June 2010. Mr. Ohira is a company auditor of Trust Networks, NCJ, IIJ-Global, Trinity and RYUKOSHA. Mr. Ohira was General Manager of International Business Management Dept. of Dai-Ichi Life Insurance Company, Ltd.

Masako Tanaka was appointed as an auditor of IIJ in June 2018. Ms. Tanaka joined us in December, 1992 and has worked as general manager of administrative department as well as human resources department.

Yasuhiro Akatsuka has been an outside company auditor of IIJ since June 2016. Mr. Akatsuka is a Japanese Certified Public Accountant and joined Deloitte Haskins & Sells (currently Deloitte Touche Tohmatsu LLC) in November 1972. Mr. Akatsuka left Deloitte Touche Tohmatsu LLC in September 2011 and has been serving as senior technical staff of The Japanese Institute of Certified Public Accountants.

Takashi Michishita has been an outside company auditor of IIJ since June 2016. Mr. Michishita admitted to the Tokyo Bar Association and joined Asahi Law Office (currently Nishimura & Asahi LPC) in April 1994. Mr. Michishita has been a partner at Nishimura & Asahi LPC since July 2007.

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The following table provides information about our executive officers as of June 29, 2018.

Name	Position and Major Responsibility
Naoshi Yoneyama	Senior Managing Executive Officer Division Director of Corporate Planning Division
Masayoshi Tobita	Managing Executive Officer Division Director of Administrative Division
Kiyoshi Ishida	Managing Executive Officer Division Director of Network Division
Makoto Ajisaka	Managing Executive Officer Division Director of Service Product Business Division
Yoshikazu Yamai	Managing Executive Officer Division Director of Service Infrastructure Division
Koichi Maruyama	Managing Executive Officer Division Director of Global Business Division
Masakazu Tachikui	Managing Executive Officer Division Director of Cloud Division
Yasumitsu Iizuka	Executive Officer In charge of Global Business Division (President and CEO of IIJ America Inc.)
Seiji Okita	Executive Officer Division Director of Outsourcing Division
Masami Kawamata	Executive Officer General Manager of Accounting Department
Akira Sumiya	Executive Officer General Manager of Compliance Department

_________

* Senior Executive Officer, Kazuhiro Tokita was appointed as the President and CEO of DeCurret, an equity method investee of IIJ, on April 1, 2018.

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B. Compensation

The aggregate compensation to IIJ’s directors and company auditors during the fiscal year ended March 31, 2018 was as follows:

			Breakdown of Compensation (in millions of yen)
Position	Total Compensation		Base Salary		Stock Option		Liability for Retirement Benefit		Others		Number of Persons
Directors *	¥	290	¥	253	¥	36		–	¥	1		9
Company Auditor **		12		12		–		–		–		1
Outside Directors/Outside Company Auditors		35		34		–		–		1		8

_________

(1) Starting with its annual securities report for the year ended March 31, 2010 filed with the Ministry of Finance, a Japanese listed company is required to disclose the individual compensation of any director, executive officer or corporate auditor if it is ¥100 million or more. For fiscal year ended March 31, 2018, there was no director, executive officer or corporate auditor who received compensation of over ¥100 million.

(2) Upper limits on compensation for directors and company auditors are determined at a general meeting of shareholders of the Company. Within the upper limit approved by the shareholders' meeting, the Board of Company Auditors will determine the amount of compensation for each company auditor.

(3) Please see Item 6.E. “Share Ownership” for more detailed information concerning our stock options.

* Excluding Outside Directors

** Excluding Outside Company Auditors

The retirement benefit plan for full-time directors of IIJ was abolished in June 2011. We recorded a liability for retirement benefits for full-time directors of ¥400 million, which would be required if they retire as of March 31, 2018. For a description of our stock option and warrant issuances to directors and employees, see Item 6.E.

The retirement benefit plan for full-time company auditors was abolished in June 2016. We recorded a liability for retirement benefits of ¥8 million for full-time company auditors, which would be required to settle the obligation if they retire as of March 31, 2018. For a description of our stock option and warrant issuances to directors and employees, see Item 6.E.

C. Board Practices

From here on, “Corporation Law” refers to the amended Corporation Law.

In accordance with the Corporation Law and our Articles of Incorporation, our directors are elected at a general meeting of shareholders and our Board of Directors consists of a minimum of three and a maximum of 14 directors. While the normal term of office of a director is two years, a director may serve any number of consecutive terms. We do not have audit or remuneration committees, as is the standard practice in Japan. We do not have any service contracts with any of our directors providing for benefits upon termination of their employment.

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We have a Board of Company Auditors as well as an accounting auditor who is an independent certified public accountant or an auditing corporation. In accordance with the Corporation Law and our Articles of Incorporation, our Board of Company Auditors consists of a minimum of three company auditors, of whom at least half must be from outside of the company, and company auditors are elected at a general meeting of shareholders. Currently, three of our four company auditors are outside company auditors. While the normal term of office of a company auditor is four years, a company auditor may serve any number of consecutive terms. Our company auditors are under a statutory duty to supervise the execution of duties by the directors, to investigate proposals and documents to be submitted by the Board of Directors to the general meetings of shareholders and report their opinions thereon to the shareholders, if necessary. They are required to attend meetings of the Board of Directors and to express their opinions if necessary, but they are not entitled to vote. Each of our company auditors also have a statutory duty to audit business reports and examine the audit report on our financial statements prepared by our accounting auditor, and provide a report thereon to the entire Board of Company Auditors, which must, in turn, submit its audit report to the Board of Directors and/or the general meetings of shareholders. The Board of Company Auditors will also determine matters relating to the duties of company auditors, such as audit policy and methods of investigation of our affairs.

Following the requirements of the Corporation Law, we require a director to obtain the approval of the Board of Directors in order for such director to accept a transfer of a product or any other asset of IIJ, to transfer a product or any other asset of such director to IIJ, to receive a loan from IIJ, or to effect any other transaction with IIJ, for himself or a third-party.

If we issue common shares or other shares, stock acquisition rights or bonds with stock acquisition rights under the Corporation Law, it is necessary for the Board of Directors to determine the conditions of issuance. Additionally, (i) if the company issues such securities to persons other than shareholders (in the case of common shares or other shares) at a specially favorable issue price or (in the case of stock acquisition rights or bonds with stock acquisition rights) on specially favorable conditions, even if there are provisions related thereto in the Articles of Incorporation, some matters related to such issuance are to be resolved by a special resolution of a shareholders’ meeting and (ii) if the company issues such securities to persons other than shareholders whereby the persons will hold more than 50% of the voting rights of all shareholders, the company is to provide notice (including public notice) to its shareholders in advance and if shareholders who hold 10% or more of the voting rights of all shareholders provide notice to the company to dissent from such issuance of securities, an approval by a resolution of a general meeting of shareholders is generally required before the payment date for such issuance or transfer pursuant to the Corporation Law.

The rights of ADR holders, including their rights relating to corporate governance practices, are provided in the deposit agreement which is an exhibit to this annual report.

Limitation of Liabilities of some outside Directors and Auditors

As of June 29, 2018, we have entered into an agreement with five of our outside directors, Mr. Shingo Oda, Mr. Tadashi Okamura, Mr. Yasurou Tanahashi, Mr. Takashi Tsukamoto and Mr. Shinobu Umino, and two of our outside company auditors, Mr. Yasuhiro Akatsuka and Mr. Takashi Michishita that limits their liabilities to us for damages suffered by us due to their acts taken in good faith and without gross negligence, amounting to ¥10 million or the aggregate of the amounts set forth in Article 427 paragraph 1 of the Corporation Law, whichever is higher. Under the former Corporation Law, we were allowed to enter into such agreements only with outside directors, outside auditors, accounting advisors and accounting auditors, but under the Corporation Law, which amended the range of directors and company auditors that are allowed to be a party to such agreements, we are allowed to enter with all directors (excluding those who are executive directors and who serve in certain other roles in corporate governance, hereinafter referred to as “non-executive directors”) and all company auditors. However, we have decided not to enter into such agreements with non-executive directors and company auditors other than our outside directors and outside auditors above. For further discussion, see Item 10.C. Material Contracts and Exhibit 4.5 of this annual report.

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D. Employees

As of March 31, 2018, we had 3,203 employees, including employees of our consolidated subsidiaries, and we had 3,104 employees as of March 31, 2017 and 2,980 employees as of March 31, 2016. The following table shows the breakdown of the employees by main category of activity.

	For the fiscal year ended March 31,
	2016		2017		2018
	(number of employees)
Engineering		2,121		2,221		2,273
Sales		516		532		553
Administration		343		351		377

We have never experienced any labor disputes and consider our labor relations to be good. To our knowledge, none of our employees are members of any union.

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E. Share Ownership

The information on share ownership required by this item is in Item 6.A. “Directors and Senior Management” above.

Stock Option Plan

Stock compensation–type stock option. A stock compensation-type stock option is a stock acquisition right entitling its holder to acquire shares upon the exercise of a stock acquisition right at an exercise price of one yen (¥1) per share. Stock compensation-type stock options are allocated to directors and executive officers as a substitution for the retirement allowance planned for them and to further motivate and incentivize them to enhance IIJ’s middle- to long-term business performance and corporate value. On May 26, 2011, IIJ’s board of directors resolved to introduce stock compensation–type stock options for executive officers of IIJ. On June 28, 2011, IIJ’s ordinary general meeting of shareholders approved the introduction of stock compensation type stock options for directors of IIJ.

	1st Series (issued in July 2011)	2nd Series (issued in July 2012)
(1) Total number of Stock Acquisition Rights:	138 rights	130 rights
(2) Class and total number of shares underlying the Stock Acquisition Rights:	27,600 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares. This number is adjusted from 1 share to 200 shares due to the effect of the stock split conducted on October 1, 2012)	26,000 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares. This number is adjusted from 1 share to 200 shares due to the effect of the stock split conducted on October 1, 2012)
(3) Amount to be paid in exchange for the Stock Acquisition Rights:	¥259,344 per option  (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)	¥318,562 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)
(4) Exercise period of stock acquisition rights:	From July 15, 2011 to July 14, 2041	From July 14, 2012 to July 13, 2042
(5) Position and number of persons to be allotted the stock acquisition rights and the number of stock acquisition rights to be allotted:	- Directors (excluding Part-time and Outside Directors) of IIJ: 6 Directors, 89 rights - Executive Officers of IIJ: 8 Executive Officers, 49 rights	- Directors (excluding Part-time and Outside Directors) of IIJ: 6 Directors, 74 rights - Executive Officers of IIJ: 11 Executive Officers, 56 rights
	3rd Series (issued in July 2013)	4th Series (issued in July 2014)
(1) Total number of Stock Acquisition Rights:	89 rights	128 rights
(2) Class and total number of shares underlying the Stock Acquisition Rights:	17,800 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)	25,600 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)
(3) Amount to be paid in exchange for the Stock Acquisition Rights:	¥647,000 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)	¥422,600 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)
(4) Exercise period of stock acquisition rights:	From July 12, 2013 to July 11, 2043	From July 11, 2014 to July 10, 2044
(5) Position and number of persons to be allotted the stock acquisition rights and the number of stock acquisition rights to be allotted:	- Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 60 rights - Executive Officers of IIJ: 10 Executive Officers, 29 rights	- Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 88 rights - Executive Officers of IIJ: 10 Executive Officers, 40 rights

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	5th Series (issued in July 2015)	6th Series (issued in July 2016)
(1) Total number of Stock Acquisition Rights:	151 rights	162 rights
(2) Class and total number of shares underlying the Stock Acquisition Rights:	30,200 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)	32,400 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)
(3) Amount to be paid in exchange for the Stock Acquisition Rights:	¥369,200 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)	¥360,000 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)
(4) Exercise period of stock acquisition rights:	From July 14, 2015 to July 13, 2045	From July 12, 2016 to July 11, 2046
(5) Position and number of persons to be allotted the stock acquisition rights and the number of stock acquisition rights to be allotted:	- Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 100 rights - Executive Officers of IIJ: 11 Executive Officers, 51 rights	- Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 105 rights - Executive Officers of IIJ: 12 Executive Officers, 57 rights
	7th Series (issued in July 2017)
(1) Total number of Stock Acquisition Rights:	169 rights
(2) Class and total number of shares underlying the Stock Acquisition Rights:	33,800 shares of the Company’s common stock (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)
(3) Amount to be paid in exchange for the Stock Acquisition Rights:	¥337,200 per option. (The fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model)
(4) Exercise period of stock acquisition rights:	From July 15, 2017 to July 14, 2047
(5) Position and number of persons to be allotted the stock acquisition rights and the number of stock acquisition rights to be allotted:	- Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 114 rights - Executive Officers of IIJ: 11 Executive Officers, 55 rights

8th Series (To be issued in July 2018)

(1) Maximum number of Stock Acquisition Rights to be determined on July 13, 2018: 234 rights

(2) Class of shares underlying the Stock Acquisition Rights, the Company’s common stock and the total number of shares underlying the Stock Acquisition Rights to be determined accordingly with the number of stock acquisition rights to be allotted (The number of shares to be issued or transferred for each Stock Acquisition Rights shall be 200 shares)

(3) Amount to be paid in exchange for the Stock Acquisition Rights is to be determined on July 13, 2018 based on the fair value of stock acquisition rights used to recognize compensation expense was estimated using the Black-Scholes option-pricing model.

(4) Exercise period of stock acquisition rights: From July 14, 2018 to July 13, 2048.

(5) Position and number of persons to be allotted the stock acquisition rights and the maximum number of stock acquisition rights to be allotted:

(i) Directors (excluding Part-time and Outside Directors) of IIJ: 7 Directors, 157 rights

(ii) Executive Officers of IIJ: 11 Executive Officers, 77 rights

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Class and total number of shares to be acquired by exercising stock acquisition rights outstanding, as of March 31, 2018, is as follows:

	1st Series	2nd Series	3rd Series	4th Series	5th Series	6th Series	7th Series
Issued in	July 2011	July 2012	July 2013	July 2014	July 2015	July 2016	July 2017
Outstanding: Class	Common stock	Common stock	Common stock	Common stock	Common stock	Common stock	Common Stock
Outstanding: Total number of shares to be acquired	21,400 shares	20,800 shares	15,600 shares	22,600 shares	29,400 shares	31,600 shares	33,800 shares

Employee Stock Purchase Plan

The Group Employee Stock Purchase Plan, which was implemented in December 1995, provides designated employees with the opportunity to purchase shares at market value. Incentive payment is given to designated employees. Shares are basically held in the name of the group employee stock purchase program until employees leave the association, due to resignation or retirement. The representative of the employee shareholders' association exercises voting rights in accordance with the instructions of each employee shareholder. As of March 31, 2018, the association holds 501,500 shares of common stock, or 1.07% of our outstanding shares.

Director Stock Purchase Plan

The Director Stock Purchase Plan was implemented in November 2007. On April 1, 2010, the plan was amended in connection with the introduction of the Executive Officer System. The plan provides designated directors and executive officers of IIJ and its wholly-owned subsidiaries in Japan with the opportunity to purchase IIJ common shares at market value, every month, with a fixed amount of their own money through a designated security broker.

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Item 7. Major Shareholders and Related Party Transactions

A. Major Shareholders

The following table shows information regarding beneficial ownership of our common stock as of March 31, 2018 by each shareholder known by us to own beneficially more than 5% of our common stock and all directors and executive officers as a group. We are not required by Japanese law to disclose beneficial ownership of our common stock. As explained in “Reporting Requirements of Shareholders—Report of Substantial Shareholdings” in Item 10.B. of this annual report on Form 20-F, any person who becomes, beneficially and solely or jointly, a holder of more than 5% of our outstanding common stock must file a report with the relevant local finance bureau of the Ministry of Finance. The information in this table is based upon our shareholders of record and reports filed with the Financial Services Agency and the SEC.

	Outstanding Voting Shares as of March 31, 2018(4)
	Number		Percentage
Nippon Telegraph and Telephone Corporation and affiliates (1)		12,135,000		26.9	%
Koichi Suzuki(2)		2,635,300		5.8
Directors, executive officers and company auditor as a group(3)		2,914,700		6.5

__________ 

(1) Includes NTT, which owned 10,095,000 shares, or 22.4% of our outstanding voting shares and 21.6% of our total issued shares, and NTT Communications, which owned 2,040,000 shares, or 4.5% of our outstanding voting shares and 4.4% of our total issued shares.

(2) Mr. Koichi Suzuki directly held 4.0% of our outstanding voting shares and 1.8% indirectly through his wholly owned private company called KS Holdings.

(3) Includes Koichi Suzuki’s holdings which are also separately set forth above and 31,500 shares owned by Mr. Tokita who resigned executive officer on March 31, 2018. No other director or executive officer except for Koichi Suzuki was a beneficial owner of more than 5%.

(4) As of March 31, 2018, the Company held 1,650,909 shares of the Company as treasury stock.

Our major shareholders have the same voting rights as other holders of our common stock.

According to our register of shareholders, as of March 31, 2018, there were 9,590 holders of common stock of record worldwide. As of March 31, 2018, The Bank of New York Mellon, depositary for our ADSs, held 1.7% of the outstanding common stock on that date. According to The Bank of New York Mellon, as of March 31, 2018, there were 1,565 ADR holders of record with addresses in the United States. Because some of these shares were held by brokers or other nominees, the number of record holders with addresses in the United States might not fully show the number of beneficial owners in the United States. Of the 46,713,800 shares of common stock outstanding as of March 31, 2018, shares were held in the form of 1,622,850 ADSs. As of March 31, 2018, the Company held 1,650,909 shares of the Company as treasury stock.

To the knowledge of the Company, it is not directly or indirectly owned or controlled by any other corporation, by any government, or by any other natural or legal person or persons severally or jointly. As far as is known to the Company, there are no arrangements, the operation of which may at a subsequent date, result in a change in control of IIJ.

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B. Related Party Transactions

NTT-affiliated Companies. The Company entered into a number of different types of transactions with NTT and its subsidiaries including purchases of wireline telecommunication services for the Company’s offices and capital lease arrangements. On an ongoing basis in the ordinary course of business, for the Company’s connectivity and outsourcing services, the Company purchases international and domestic backbone services, local access lines, rental rack space in data centers and mobile services from NTT and its subsidiaries. The Company sells to NTT and its subsidiaries its services, systems integration services and monitoring services for their data centers. For the fiscal year ended March 31, 2018, we have spent ¥35.2 billion in the aggregate for international and domestic backbone, local access line, mobile connectivity costs, lines for WAN services and co-location costs to NTT and its subsidiaries such as NTT Communications, NTT East, NTT West and NTT Docomo. As of March 31, 2018, we had ¥3.1 billion of lease obligations with NTT FINANCE.

All the transactions entered into with NTT and its affiliates are entered in the ordinary course of business. Mr. Kawashima, one of our directors, was an employee of NTT DATA Corporation and was Representative Director of NTT DATA TOKAI Corporation. Mr. Umino, one of our outside directors, was an employee of NTT, Senior Vice President of NTT DATA Corporation, Senior Executive Vice President of NTT Communications, President and Representative Director of NTT COMWARE Corporation, and is currently Chief Executive Adviser of NTT COMWARE Corporation. There is no shareholders’ agreement in place with NTT, its affiliates or any other party for the appointment of any of our directors.

Transactions with equity method affiliates. In the ordinary course of business, we have various sales, purchases and other transactions with affiliate companies which we own 20% to 50% of and are accounted for by the equity method. Account balances and transactions with such affiliate companies as of and for the fiscal year ended March 31, 2018 are presented as follows:

	millions of yen
Accounts receivable	¥	183
Accounts payable		98
Revenues		864
Costs and Expenses		1,107

Transactions with Outside Directors and Auditors. We entered into a Limitation of Liability Agreement with Mr. Yasuhiro Akatsuka and Mr. Takashi Michishita as outside company auditors on June 24, 2016,with Mr. Tadashi Okamura and Mr. Takashi Tsukamoto as outside directors on June 28, 2017 and with Mr. Yasurou Tanahashi, Mr. Shingo Oda and Mr. Shinobu Umino as outside directors on June 28, 2018, respectively, pursuant to which their liability for damages sustained by us as a result of their actions is limited to an aggregate of ¥10 million. For further discussion, see Item 10.C. Material Contracts and Exhibit 4.5 of this annual report.

See Note 22 “Related Party Transactions” and Note 6 “Investments in Equity Method Investees”　to our consolidated financial statements, included in this annual report on Form 20-F.

C. Interests of Experts and Counsel

Not applicable.

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Item 8. Financial Information

A. Consolidated Statements and Other Financial Information

Financial Statements

The consolidated financial statements required by this item begin on page F-1.

Legal or Arbitration Proceedings

The information on legal or arbitration proceedings required by this item is in Item 4.B.

Dividend Policy

Our basic dividend policy is that we pay dividends to our shareholders continuously and in a stable manner while considering the need to have retained earnings for the enhancement of financial position, middle-to long-term business expansion, future business investment and other goals. Under Japanese law, a company is required to have retained earnings, without accumulated deficit, in order to be able to conduct certain types of capital-related transactions such as payments of dividends in general. The ordinary general meeting of shareholders held in June 2006 approved the elimination of accumulated deficit through the reduction of additional-paid in capital and common stock in our non-consolidated financial statements under generally accepted accounting principles in Japan. For the fiscal year ended March 31, 2018, IIJ paid total cash dividend of ¥27.0 per share of common stock.

B. Significant Changes

Except as otherwise disclosed in this annual report on Form 20-F, there has been no significant change in our financial condition since March 31, 2018, the date of our last audited financial statements.

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Item 9. The Offer and Listing

A. Offer and Listing Details

ADSs representing our common stock have been quoted on the NASDAQ market since August 4, 1999 under the symbol “IIJI” and were transferred from the NASDAQ Global Market to the NASDAQ Global Select Market on June 11, 2007. The current ADS/share ratio is 2 ADSs per 1 share of our common stock. Our shares of common stock had been quoted on the Mothers market of the TSE since December 2, 2005 under the stock code number “3774” and were transferred to the First Section of the TSE on December 14, 2006.

The following table shows, for the periods indicated, the high and low price of our ADSs and shares of common stock on the TSE for the periods indicated:

	NASDAQ (1) (per ADS)				TSE (1) (2) (per share of common stock)
Fiscal year ended/ending March 31,	High		Low		High		Low
2014		21.21		8.71		4,365		1,797
2015		12.95		7.56		2,700		1,802
2016		10.92		7.78		2,554		1,910
2017
First Quarter		11.13		9.24		2,464		1,901
Second Quarter		11.00		8.95		2,271		1,832
Third Quarter		9.27		6.70		1,908		1,514
Fourth Quarter		9.12		7.15		2,073		1,737
2018
First Quarter		10.08		8.27		2,248		1,881
Second Quarter		10.00		8.12		2,133		1,931
Third Quarter		10.50		8.82		2,395		2,022
Fourth Quarter		12.50		8.95		2,620		2,074
Month
January 2018		12.50		8.95		2,620		2,074
February 2018		11.41		9.45		2,487		2,158
March 2018		11.30		9.52		2,419		2,134
April 2018		10.47		9.42		2,184		2,010
May 2018		10.44		9.16		2,321		1,996
June 2018 (through June 22, 2018)		11.20		10.20		2,424		2,187

___________

(1) Price data are based on prices throughout the sessions for each corresponding period at each stock exchange.

(2) We conducted a 1 to 200 stock split on common stock with an effective date of October 1, 2012. The figures are retroactively adjusted to reflect the stock split.

B. Plan of Distribution

Not applicable.

C. Markets

ADSs representing our common stock have been quoted on the NASDAQ market since August 4, 1999 under the symbol “IIJI” and on June 11, 2007 were transferred from the NASDAQ Global Market to the NASDAQ Global Select Market. Our shares of common stock have been quoted on the Mothers market of the TSE since December 2, 2005 under the stock code number “3774” and were transferred to the First Section of the TSE on December 14, 2006.

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D. Selling Shareholders

Not applicable.

E. Dilution

Not applicable.

F. Expenses of the issue

Not applicable.

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Item 10. Additional Information

A. Share Capital

Not required.

B. Memorandum and Articles of Association

Organization

IIJ is a joint stock corporation (kabushiki kaisha) incorporated in Japan under the Corporation Law. It is registered in the Commercial Register (shogyo tokibo) maintained by the Tokyo Legal Affairs Bureau and several other registry offices of the Ministry of Justice.

Objects and Purposes in Our Articles of Incorporation

Article 2 of our Articles of Incorporation states our objects and purposes:

· Telecommunications business under the Telecommunications Business Law,

· Processing, mediation and provision of information and contents by using telecommunications networks,

· Agency for the management business such as the management of networks and the management of information and telecommunications systems,

· Planning, consulting service, development, operation and maintenance of or for information and telecommunications systems,

· Development, sales, lease and maintenance of computer software,

· Development, sales, lease and maintenance of telecommunications machinery and equipment,

· Telecommunications construction,

· Electrical contracting business,

· Agency for non-life insurance,

· Trade of secondhand goods,

· Installment Sales, Loan Affiliated Installment Sales, Intermediation of Credit Purchases, Issuance Sale and Management of Prepaid Payment Instruments,

· Research, study, education and training related to the foregoing, and

· Any and all businesses incidental or related to the foregoing.

Provisions Regarding Our Directors

There is no provision in our Articles of Incorporation as to a director’s power to vote on a proposal, arrangement or contract in which the director is materially interested, but the Corporation Law provides that such director is required to refrain from voting on such matters at the Board of Director’s meetings.

The Corporation Law provides that compensation for directors is determined at a general meeting of shareholders of a company. Within the upper limit approved by the shareholders' meeting, the Board of Directors will determine the amount of compensation for each director. The Board of Directors may, by its resolution, leave such decision to the president’s discretion.

The Corporation Law provides that a significant loan from a third-party to a company should be approved by the Board of Directors. Our regulations of the Board of Directors have adopted this policy.

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There is no mandatory retirement age for directors under the Corporation Law or our Articles of Incorporation.

There is no requirement concerning the number of shares one individual must hold in order to qualify him or her as a director under the Corporation Law or our Articles of Incorporation.

Rights of Shareholders of our Common Stock

We have issued only one class of shares, our common stock. Rights of holders of shares of our common stock have under the Corporation Law and our Articles of Incorporation include:

· the right to receive dividends when the payment of dividends has been approved at a shareholders' meeting, with this right lapsing three full years after the due date for payment according to a provision in our Articles of Incorporation,

· the right to receive interim dividends as provided for in our Articles of Incorporation, with this right lapsing three full years after the due date for payment according to a provision in our Articles of Incorporation,

· the right to vote at a shareholders' meeting (cumulative voting is not allowed under our Articles of Incorporation),

· the right to receive surplus in the event of liquidation, and

· the right to require us to purchase shares subject to certain requirements under the Corporation Law when a shareholder opposes certain resolutions including (i) the transfer of all or a material part of the business, (ii) an amendment of the Articles of Incorporation to establish a restriction on share transfer, (iii) a share exchange or share transfer to establish a holding company, (iv) company split or (v) merger, all of which must, in principle, be approved by a Special Resolution of Shareholders’ meeting.

Under the Corporation Law, a company is permitted to make distributions of surplus to the extent that the aggregate book value of the assets to be distributed to shareholders does not exceed the Distributable Amount provided for under the Corporation Law and the Ordinance of the Ministry of Justice as of the effective date of such distribution of surplus.

The amount of surplus at any given time shall be the amount of a company’s assets and the book value of company’s treasury stock after subtracting and adding the amounts of the items provided for under the Corporation Law and the applicable Ordinance of the Ministry of Justice.

So long as we maintain the unit share system (see “–Unit share system” below; currently, 100 shares of Common Stock constitute one unit), a holder of shares constituting one or more full units is generally entitled to one vote per one unit of our shares at a shareholders’ meeting. In general, under the Corporation Law and our Articles of Incorporation, a shareholders’ meeting may adopt a resolution by a majority of the voting rights represented at the meeting. The Corporation Law and our Articles of Incorporation require a quorum for the election of directors and company auditors of not less than one-third of the total number of voting rights held by all shareholders who can exercise their voting rights. A corporate shareholder, having more than one-quarter of its voting rights directly or indirectly held by us, does not have voting rights. We have no voting rights with respect to our own common stock. Shareholders may exercise their voting rights through proxies, provided that a shareholder may appoint only one shareholder who has a voting right as its proxy. Our Board of Directors may entitle our shareholders to cast their votes in writing. Our Board of Directors may also entitle our shareholders to cast their votes by electrical devices.

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While the Corporation Law, in general, requires a quorum of the majority of voting rights and approval of two-thirds of the voting rights presented at the meeting of any material corporate actions, it allows a company to reduce the quorum for such Special Resolutions by its Articles of Incorporation to not less than one-third of the total number of voting rights held by all shareholders who can exercise their voting rights. We adopted a quorum of not less than one-third of the total number of voting rights in our Articles of Incorporation for Special Resolutions for material corporate actions, such as:

· a reduction of the stated capital (except when a company reduces the stated capital within certain amount provided for under the Corporation Law concurrently with a share issue),

· amendment of our Articles of Incorporation (except amendments that the Board of Directors are authorized to make under the Corporation Law),

· establishment of a 100% parent-subsidiary relationship through a share exchange or share transfer requiring shareholders’ approval,

· a dissolution, merger or consolidation requiring shareholders’ approval,

· a company split requiring shareholders’ approval,

· a transfer of (i) the whole or an important part of our business, or (ii) the whole or a part of our shares in any of our subsidiaries,

· the taking over of the whole of the business of any other corporation requiring shareholders’ approval, and

· issuance of new shares at a specially favorable price, or issuance of stock acquisition rights or bonds with stock acquisition rights with specially favorable conditions to persons other than shareholders.

The Corporation Law provides additional specific rights for shareholders owning a substantial number of voting rights.

Shareholders holding 10% or more of the total number of voting rights of all shareholders (or our total outstanding shares) have the right to apply to a court of competent jurisdiction, or competent court, for:

· dissolution, and

· commencement of reorganization proceedings as provided for in the Company Reorganization Law of Japan.

Shareholders holding 10% or more of the total number of voting rights of all shareholders have the right to dissent from a third-party allotment of securities (including common shares or other shares, stock acquisition rights or bonds with stock acquisition rights) that will give the third-party more than 50% of the voting rights of all shareholders and also have the right to demand approval by a resolution of a general meeting of shareholders.

Shareholders who have held 3% or more of the total number of voting rights of all shareholders (or our total outstanding shares) for six months or more have certain rights under the Corporation Law which includes the rights to:

· demand the convening of a general meeting of shareholders,

· apply to a competent court for removal of a director or company auditor,

· apply to a competent court for removal of a liquidator, and

· apply to a competent court for an order to inspect our business and assets in a special liquidation proceeding.

Shareholders holding 3% or more of the total number of voting rights of all shareholders (or our total outstanding shares) have certain rights under the Corporation Law which include the rights to:

· examine our accounting books and documents and make copies of them, and

· apply to a competent court for appointment of an inspector to inspect our operation or financial condition.

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Shareholders who have held 1% or more of the total number of voting rights of all shareholders for six months or more have the right to:

· apply to a competent court for appointment of an inspector to review the correctness of the convocation and voting procedures of a general meeting of shareholders, and

· demand that we take action against the officers of our wholly owned subsidiaries to hold such officers liable.

Shareholders who have held 1% or more of the total number of voting rights of all shareholders or 300 voting rights for six months or more have the right to demand that certain matters be made objects and added to the agenda items at a general meeting of shareholders.

Shareholders who have held any number of shares for six months or more have the right to demand that we take certain actions under the Corporation Law which include the rights to demand:

· the institution of an action to enforce the liabilities of our directors or company auditors,

· the institution of an action to recover from a recipient the benefit of a proprietary nature given in relation to the exercise of the right of a shareholder, and

· a director on our behalf for the cessation of an illegal or ultra vires action.

There is no provision under the Corporation Law or our Articles of Incorporation which forces shareholders to make additional contributions when requested by us.

Under the Corporation Law, in order to change the rights of shareholders which are stipulated and defined in our Articles of Incorporation, we must amend our Articles of Incorporation. Amendments must, in principle, be approved by a Special Resolution of shareholders.

Annual general meetings and extraordinary general meetings of shareholders are convened by a representative director based on the determination of our Board of Directors. A shareholder having held 3% or more of our total outstanding shares for six months or more is entitled to demand the directors to convene a shareholders' meeting under the Corporation Law. So long as we maintain the unit share system, shareholders who are registered as the holders of one or more full units of shares in our registers of shareholders at the end of each March 31 have the right to attend the annual general meeting of our shareholders. We may, by prescribing a Record Date, determine the shareholders who are stated or recorded in the shareholder registry on the Record Date as the shareholders entitled to extraordinary general meetings of our shareholders, and in this case, we are required to make a public notice of Record Date at least two weeks prior to the Record Date. A convocation notice will be sent to these shareholders at least two weeks prior to the date of the shareholders' meeting.

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Acquisition of Own Shares

Under applicable laws of Japan, we may acquire our own shares:

(i)	through market transactions on a stock exchange on which our shares are listed or by way of tender offer (in either case pursuant to a resolution of the Board of Directors as currently authorized by our Articles of Incorporation);
(ii)	from a specific shareholder other than any of our subsidiaries (pursuant to a special resolution of a general meeting of shareholders); or
(iii)	from any of our subsidiaries (pursuant to a resolution of the Board of Directors).

In case the acquisition is made by way of (ii) above, any other shareholder may request within a certain period of time provided under the applicable Ordinance of the Ministry of Justice before a general meeting of shareholders that we also purchase our shares held by the requesting shareholder, unless the purchase price or any other consideration to be delivered in exchange for the acquisition of one of our shares does not exceed the market price of one of our shares calculated by the method prescribed in the applicable Ordinance of the Ministry of Justice.

Any acquisition by us of our own shares must satisfy certain other requirements, including that the total amount of the acquisition price may not exceed the Distributable Amount, as described above.

We may hold the shares which we acquired by way of (i) through (iii) above, and may cancel such shares by a resolution of the Board of Directors. We may also dispose of such shares subject to a resolution of the Board of Directors and subject also to other requirements applicable to the issuance of shares under the Corporation Law.

Unit share system

Our Articles of Incorporation provide that 100 shares of Common Stock constitute one unit of shares. Although the number of shares constituting one unit is included in the Articles of Incorporation, any amendment to the Articles of Incorporation reducing (but not increasing) the number of shares constituting one unit or eliminating the provisions for the unit of shares may be made by a resolution of the Board of Directors rather than by a special shareholders’ resolution, which is otherwise required for amending the Articles of Incorporation. The number of shares constituting one new unit, however, cannot exceed 1,000 or 0.5 percent of the total number of issued shares, whichever is greater.

Under the unit share system, shareholders shall have one voting right for each unit of shares that they hold. Any number of shares less than a full unit carries no voting rights.

A holder of shares of Common Stock constituting less than a full unit may require us to purchase such shares at their market value in accordance with the provisions of our share handling regulations. In addition, our Articles of Incorporation provide that a holder of shares of Common Stock constituting less than a full unit may request us to sell to such holder such amount of shares of Common Stock that will, when added together with the shares of Common Stock constituting less than a full unit, constitute a full unit of shares, in accordance with the provisions of our share handling regulations.

A holder who owns ADRs evidencing less than 200 ADSs will indirectly own less than one full unit of shares of Common Stock. Although, as discussed above, under the unit share system, holders of less than one full unit have the right to require us to purchase their shares or sell shares held by us to such holders, holders of ADRs evidencing ADSs that represent other than integral multiples of full units are unable to withdraw the underlying shares of Common Stock representing less than one full unit and, therefore, are unable, as a practical matter, to exercise the rights to require us to purchase such underlying shares or sell shares held by us to such holders. As a result, access to the Japanese markets by holders of ADRs through the withdrawal mechanism will not be available for dispositions of shares of Common Stock in lots less than one full unit. The unit share system does not affect the transferability of ADSs, which may be transferred in lots of any size.

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Restrictions on Holders of our Common Stock

There is no restriction on non-resident or foreign shareholders on the holding of our shares or on the exercise of voting rights, except for filing requirements with respect to an acquisition of shares by non-residents of Japan under The Foreign Exchange and Foreign Trade Act of Japan and related rules and regulations, as explained in Item 10.D (Exchange Controls). However, pursuant to a provision of our share handling regulations, a shareholder who does not have an address or residence in Japan is required to file its temporary address to receive notices in Japan or that of a standing proxy having any address or residence in Japan with our transfer agent.

There is no provision in our Articles of Incorporation that would have the effect of delaying, deferring or preventing a change in control that would operate only with respect to a merger, acquisition or corporate restructuring involving us.

There is no provision in our Articles of Incorporation or other subordinated rules regarding the ownership threshold, above which shareholder ownership must be disclosed. Pursuant to the Financial Instruments and Exchange Law of Japan and its related regulations, a shareholder who has become, solely or jointly, a holder of more than 5% of the total issued shares in a company that is listed on any stock exchange in Japan is required to file a report with the Finance Bureau of the Ministry of Finance, and, with certain exceptions, a similar report must also be filed in respect of any subsequent change of 1% or more in the holding or of any change in material matters set forth in any previously filed report.

There is no provision in our Articles of Incorporation governing changes in the capital more stringent than is required by law.

For a description of rights of holders of ADSs, please see the “Description of American Depositary Receipts” section in our Form F-1 Registration Statement (File No. 333-10584), declared effective on August 3, 1999, as amended, hereby incorporated by reference.

C. Material Contracts

The following are summaries of our material contracts, other than those we entered into in the ordinary course of business.

Solutions Engagement Agreement. IIJ Global entered into a Solutions Engagement Agreement on June 1, 2010, between IBM Japan. The Solutions Engagement Agreement, which contains indemnification, establishes the basis for a procurement relationship between IIJ-Global and IBM Japan, the largest sales partner of IIJ-Global. IIJ-Global will provide and perform services, functions, responsibilities and others in a way that were being provided and performed by AT&T Japan. This agreement will remain in effect until terminated. The Solutions Engagement Agreement is filed as Exhibit 4.67 of this annual report.

Limitation of Liability Agreements, dated June 24, 2016, June 28, 2017 and June 28, 2018 between IIJ and outside directors and outside company auditors. We entered into a Limitation of Liability Agreement with Mr. Yasuhiro Akatsuka and Mr. Takashi Michishita as outside company auditors on June 24, 2016,with Mr. Tadashi Okamura and Mr. Takashi Tsukamoto as outside directors on June 28, 2017 and with Mr. Yasurou Tanahashi, Mr. Shingo Oda and Mr. Shinobu Umino as outside directors on June 28, 2018, respectively, under which we limit the liability of outside directors in accordance with the rules defined in Article 427 of the Corporation Law. Under the terms of the agreements on limited liability, the liability of outside directors for damages sustained by us as a result of their actions is limited to an aggregate of ¥10 million or the aggregate of the amounts set forth in Article 427 paragraph 1 of the Corporation Law, whichever is higher. The full English translation of the Agreement on Limited Liability is filed as Exhibit 4.5 of this annual report.

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D. Exchange Controls

The Foreign Exchange and Foreign Trade Act of Japan, as amended and the cabinet orders and ministerial ordinances thereunder (the “Foreign Exchange Regulations”), regulate certain transactions involving a “non-residents of Japan” or a “Foreign Investor,” including the issuance of securities by a resident of Japan outside of Japan, transfer of securities between a resident of Japan and a non-resident of Japan, “inward direct investment” by a Foreign Investor, and a payment from Japan to a foreign country or by a resident of Japan to a Non-resident of Japan.

“Non-residents of Japan” is defined as individuals who are not residents in Japan and corporations whose principal offices are located outside of Japan. Generally, branches and other offices of Japanese corporations which are located outside of Japan are regarded as non-residents of Japan, but branches and other offices of non-resident corporations which are located within Japan are regarded as residents of Japan.

“Foreign Investors” is defined as:

· individuals who are non-residents of Japan;

· corporations which are organized under the laws of foreign countries or whose principal offices are located outside of Japan; and

· corporations (i) of which 50% or more of their voting rights are held by individuals who are non-residents of Japan and/or corporations which are organized under the laws of foreign countries or whose principal offices are located outside of Japan or (ii) a majority of whose officers, or officers having the power of representation, are individuals who are Non-residents of Japan.

Under the Foreign Exchange Regulations, dividends paid on, and the proceeds of sales in Japan of, shares held by non-residents of Japan may in general be converted into any foreign currency and repatriated abroad.

Under the Foreign Exchange Regulations, in general, a non-resident of Japan who acquires shares from a resident of Japan is not subject to any prior filing requirement, although the Foreign Exchange Law empowers the Minister of Finance of Japan to require prior approval for any such acquisition in certain limited circumstances. While such prior approval is not required in general, in the case where a resident of Japan transfers shares of a Japanese company for consideration exceeding ¥100 million to a non-resident of Japan, the resident of Japan that transfers the shares is required to report the transfer to the Minister of Finance of Japan within 20 days from the date of the transfer, unless the transfer is made through a bank, securities company or financial futures trader licensed under Japanese law.

If a Foreign Investor acquires our shares and, together with parties who have a special relationship with that foreign investor, holds 10% or more of our issued shares as a result of such acquisition, the Foreign Investor must, with certain limited exceptions, file a report of such acquisition with the Minister of Finance and any other competent Ministers within 15 days from and including the date of such acquisition. In certain limited circumstances, however, a prior notification of such acquisition must be filed with the Minister of Finance and any other competent Ministers, who may modify or prohibit the proposed acquisition.

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E. Taxation

Japanese Taxation

The following is a discussion summarizing material Japanese tax consequences to an owner of shares or ADSs who is a non-resident of Japan or a non-Japanese corporation without a permanent establishment in Japan to which the relevant income is attributable. The statements regarding Japanese tax laws set forth below are based on the laws in force and as interpreted by the Japanese taxation authorities as at the date hereof. These statements are subject to changes in the applicable Japanese laws or double taxation conventions occurring after that date. This summary is not exhaustive of all possible tax considerations which may apply to a particular investor. Potential investors should consult their own tax advisors as to:

· the overall tax consequences of the acquisition, ownership and disposition of shares or ADSs, including specifically the tax consequences under Japanese law,

· the laws of the jurisdiction of which they are resident, and

· any tax treaty between Japan and their country of residence.

Generally, a non-resident individual of Japan or a non-Japanese corporation as a holder of shares or ADSs is subject to Japanese withholding tax on dividends paid by IIJ. In the absence of any applicable tax treaty, convention or agreement reducing the maximum rate of withholding tax, the rate of Japanese withholding tax applicable to dividends paid by IIJ to a non-resident individual of Japan or a non-Japanese corporation is 20% (on or before December 31, 2037, the rate of Japanese withholding tax will be increased to 20.42% including the Special Reconstruction Income Tax, which is described below). With respect to dividends paid on listed shares issued by Japanese Corporation (such as our shares) to a non-resident individual of Japan or a non-Japanese corporation, the aforementioned 20% withholding tax rate is reduced to 15% for dividends to be due and payable thereafter (on or before December 31, 2037, the rate of Japanese withholding tax will be increased to 15.315% including the Special Reconstruction Income Tax). This tax reduction is not available for a non-resident individual who holds 3% of the issued shares of a Japanese corporation. For the purpose of this paragraph, the Special Reconstruction Income Tax is a special surtax at the rate of 2.1% imposed on individuals and corporations (whether residents or non-residents of Japan, or Japanese corporations or non-Japanese corporations) until December 31, 2037 for reconstruction funding after the Great East Japan Earthquake. This special surtax is applicable to various income taxes including withholding tax on dividends and the amount of such special surtax is calculated by multiplying the amount of the original income tax by the surtax rate of 2.1%. In consequence, the amount of the aggregate withholding tax on dividends will be the original amount of such withholding tax plus the original amount multiplied by the surtax rate (i.e. 102.1% of the original amount). Japan has income tax treaties whereby the above-mentioned withholding tax rate is reduced, generally to 15% for portfolio investors with, among other countries, Belgium, Canada, Denmark, Finland, Germany, Ireland, Italy, Luxembourg, New Zealand, Norway, Singapore and Spain while the income tax treaties with Australia, France, Hong Kong, the Netherlands, Portugal, Saudi Arabia, Switzerland, the U.K. and the United States generally reduce the withholding tax rate to 10% for portfolio investors. In addition, under the income tax treaty between the United States and Japan, dividends paid to pension funds of qualified United States residents eligible to enjoy treaty benefits are exempt from Japanese income taxation by way of withholding or otherwise unless such dividends are derived from the carrying on of a business, directly or indirectly, by such pension funds. Under the income tax treaty between Japan and the U.K., similar treatment will be applied to dividends. Under Japanese tax law, any reduced maximum rate applicable under a tax treaty shall be available when such maximum rate is below the rate otherwise applicable under the Japanese tax law referred to in the preceding paragraph with respect to the dividends to be paid by IIJ on the shares.

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Non-resident holders who are entitled to a reduced rate of Japanese withholding tax on payments of dividends on the shares by IIJ are required to submit an Application Form for Income Tax Convention regarding Relief from Japanese Income Tax and Special Reconstruction Income Tax on Dividends in advance through IIJ to the relevant tax authority before the payment of dividends. A standing proxy for non-resident holders may provide such application service. With respect to ADSs, the reduced rate is applicable if The Bank of New York Mellon, as depositary, or its agent submits in duplicate two Application Forms for Income Tax Convention (one is FORM 4 subtitled “Extension of Time for Withholding of Japanese Income Tax and Special Reconstruction Income Tax on Dividends with respect to Foreign Depositary Receipt” to the payer of dividends, who has to file the original with the district director of tax office for the place where the payer resides, by the day before the payment of dividends and the other is FORM 5 subtitled “Relief from Japanese Income Tax and Special Reconstruction Income Tax on Dividends with respect to Foreign Depositary Receipt” to the district director of tax office through the payer of Dividends in eight months from the day following the base date of payment of dividends for application purposes for which FORM 4 has been submitted). To claim the reduced rate, a non-resident holder of ADSs will be required to file proof of taxpayer status, residence and beneficial ownership, as applicable, and to provide other information or documents as may be required by the depositary. Non-resident holders of shares or ADSs who do not submit an application in advance will generally be entitled to claim a refund from the relevant Japanese tax authority of withholding taxes withheld in excess of the rate of an applicable tax treaty.

Gains derived from the sale of the shares or ADSs outside Japan, or from the sales of shares within Japan by a non-resident holder, generally are not subject to Japanese income or corporation taxes provided that such gains are from portfolio investments where the shareholding ratio is within certain prescribed levels.

Japanese inheritance and gift taxes at progressive rates may be payable by an individual who has acquired shares or ADSs as a legatee, heir or done, even if the individual is not a Japanese resident.

United States Taxation

The following discusses United States federal income tax consequences of the ownership of shares or ADSs. It only applies to U.S. holders of shares or ADSs, as defined below, who hold their shares or ADSs as capital assets for tax purposes. It does not address special classes of holders, some of whom may be subject to other rules including:

· tax-exempt entities,

· life insurance companies,

· dealers in securities,

· traders in securities that elect to use a mark-to-market method of accounting for securities holdings,

· investors liable for alternative minimum tax,

· investors that actually or constructively own 10% or more of the combined voting power of the voting stock of IIJ or of the total value of the stock of IIJ,

· investors that hold shares or ADSs as part of a straddle or a hedging or conversion transaction,

· a person that purchases or sells shares or ADSs as part of a wash sale for tax purposes, or

· investors whose functional currency is not the U.S. dollar.

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This discussion is based on the tax laws of the United States, including the Internal Revenue Code of 1986, as amended, its legislative history, existing and proposed regulations and administrative and judicial interpretations, as currently in effect, as well as on the Convention Between the United States of America and Japan (the “Treaty”). These laws are subject to change, possibly on a retroactive basis. In addition, this discussion is based in part upon the representations of the depositary and the assumption that each obligation in the deposit agreement relating to the ADRs and any related agreement will be performed in accordance with its terms.

If a partnership holds the shares or ADSs, the United States federal income tax treatment of a partner will generally depend on the status of the partner and the tax treatment of the partnership. A partner in a partnership holding the shares or ADSs should consult its tax advisor with regard to the United States federal income tax treatment of an investment in the shares or ADSs.

For purposes of this discussion, a “U.S. holder” is a beneficial owner of shares or ADSs that is:

· a citizen or resident of the United States,

· a domestic corporation,

· an estate whose income is subject to United States federal income tax regardless of its source, or

· a trust if a United States court can exercise primary supervision over the trust’s administration and one or more United States persons are authorized to control all substantial decisions of the trust.

This discussion addresses only United States federal income taxation. You should consult your own tax advisor regarding the United States federal, state and local and other tax consequences of owning and disposing of shares and ADSs in your particular circumstances.

In general, and taking into account the earlier assumptions, for United States federal income tax purposes, if you hold ADRs evidencing ADSs, you will be treated as the owner of the shares represented by those ADRs. Exchanges of shares for ADRs, and ADRs for shares, generally will not be subject to United States federal income tax.

The discussion under the headings “Taxation of Dividends” and “Taxation of Capital Gains” assumes that we will not be treated as a Passive Foreign Investment Company (“PFIC”) for U.S. federal income tax purposes. For a discussion of the rules that apply if we are treated as a PFIC, see the discussion under the heading “PFIC Rules” below.

Taxation of Dividends

Under the United States federal income tax laws, if you are a U.S. holder, the gross amount of any dividend we pay out of our current or accumulated earnings and profits (as determined for United States federal income tax purposes) is subject to United States federal income taxation. If you are a noncorporate U.S. holder, dividends that constitute qualified dividend income will be taxable to you at preferential rates applicable to long-term capital gains provided that you hold the shares or ADSs for more than 60 days during the 121-day period beginning 60 days before the ex-dividend date and meet other holding period requirements. Dividends we pay with respect to the shares or ADSs generally will be qualified dividend income.

You must include any Japanese tax withheld from the dividend payment in this gross amount even though you do not in fact receive it. The dividend is taxable to you when you, in the case of shares, or the depositary, in the case of ADSs, receive the dividend, actually or constructively. The dividend will not be eligible for the dividends-received deduction generally allowed to United States corporations in respect of dividends received from other United States corporations. The amount of the dividend distribution that you must include in your income as a U.S. holder will be the U.S. dollar value of the Japanese yen payments made, determined at the spot Japanese yen/U.S. dollar rate on the date the dividend distribution is includible in your income, regardless of whether the payment is in fact converted into U.S. dollars. Generally, any gain or loss resulting from currency exchange fluctuations during the period from the date you include the dividend payment in income to the date you convert the payment into U.S. dollars will be treated as ordinary income or loss and will not be eligible for the special tax rate applicable to qualified dividend income. The gain or loss generally will be income or loss from sources within the United States for foreign tax credit limitation purposes.

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Distributions in excess of current and accumulated earnings and profits, as determined for United States federal income tax purposes, will be treated as a return of capital to the extent of your basis in the shares or ADSs and thereafter as capital gain. However, we do not expect to calculate earnings and profits in accordance with United States federal income tax principles. Accordingly, you should expect to generally treat distributions we make as dividends.

Subject to certain limitations, the Japanese tax withheld in accordance with the Treaty and paid over to Japan will be creditable or deductible against your United States federal income tax liability. Special rules apply in determining the foreign tax credit limitation with respect to dividends that are subject to the preferential tax rate. To the extent a refund of the tax withheld is available to you under Japanese law or under the Treaty, the amount of tax withheld that is refundable will not be eligible for credit against your United States federal income tax liability.

For foreign tax credit purposes, dividends will generally constitute income from sources outside the United States. Dividends generally be “passive” income for purposes of computing the foreign tax credit allowable to you.

Taxation of Capital Gains

If you sell or otherwise dispose of your shares or ADSs, you will recognize capital gain or loss for United States federal income tax purposes equal to the difference between the U.S. dollar value of the amount that you realize and your tax basis, determined in U.S. dollars, in your shares or ADSs. Capital gain of a noncorporate U.S. holder is generally taxed at preferential rates where the holder has a holding period greater than one year. Additionally, gain or loss will generally be income or loss from sources within the United States for foreign tax credit limitation purposes.

PFIC Rules

We do not believe that we will be treated as a PFIC for United States federal income tax purposes for our most recent taxable year. However, this conclusion is a factual determination made annually and thus may be subject to change.

In general, we will be a PFIC with respect to you if for any of our taxable years in which you held our ADSs or shares:

· at least 75% of our gross income for the taxable year is passive income, or

· at least 50% of the value, determined on the basis of a quarterly average, of our assets is attributable to assets that produce or are held for the production of passive income.

Passive income generally includes dividends, interest, royalties, rents (other than certain rents and royalties derived in the active conduct of a trade or business), annuities and gains from assets that produce passive income. If a foreign corporation owns at least 25% by value of the stock of another corporation, the foreign corporation is treated for purposes of the PFIC tests as owning its proportionate share of the assets of the other corporation, and as receiving directly its proportionate share of the other corporation’s income.

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If we are treated as a PFIC and you did not make a mark-to-market election, as described below, you will be subject to special rules with respect to:

· any gain you realize on the sale or other disposition of your shares or ADSs, and

· any “excess distribution” that we make to you (generally, any distributions to you during a single taxable year that are greater than 125% of the average annual distributions received by you in respect of the shares or ADSs during the three preceding taxable years or, if shorter, your holding period for the shares or ADSs).

Under these rules:

· the gain or excess distribution will be allocated ratably over your holding period for the shares or ADSs,

· the amount allocated to the taxable year in which you realized the gain or excess distribution or to prior years before the first year in which we were a PFIC with respect to you will be taxed as ordinary income,

· the amount allocated to each prior year, with certain exceptions, will be taxed at the highest tax rate in effect for that year, and

· the interest charge generally applicable to underpayments of tax will be imposed in respect of the tax attributable to each such year.

Special rules apply for calculating the amount of the foreign tax credit with respect to excess distributions by a PFIC.

If your shares or ADSs are treated as marketable stock of a PFIC, you may make a mark-to-market election. If you make this election, you will not be subject to the PFIC rules described above. Instead, in general, you will include as ordinary income each year the excess, if any, of the fair market value of your shares or ADSs at the end of the taxable year over your adjusted basis in your shares or ADSs. These amounts of ordinary income will not be eligible for the favorable tax rates applicable to qualified dividend income or long-term capital gains. You will also be allowed to take an ordinary loss in respect of the excess, if any, of the adjusted basis of your shares or ADSs over their fair market value at the end of the taxable year or over their final sale or disposition prices, but only to the extent of the net amount of previously included income as a result of the mark-to-market election. Your basis in the shares or ADSs will be adjusted to reflect any such income or loss amounts.

Your shares or ADSs will be treated as stock in a PFIC if we were a PFIC at any time during your holding period in your shares or ADSs, even if we are not currently a PFIC. For purposes of this rule, if you make a mark-to-market election with respect to your shares or ADSs, you will be treated as having a new holding period in your shares or ADSs beginning on the first day of the first taxable year beginning after the last taxable year for which the mark-to-market election applies.

In addition, notwithstanding any election you make with regard to the shares or ADSs, dividends that you receive from us will not constitute qualified dividend income to you if we are a PFIC (or treated as a PFIC with respect to you) either in the taxable year of the distribution or the preceding taxable year. Dividends that you receive that do not constitute qualified dividend income are not eligible for taxation at the preferential rates applicable to qualified dividend income. Instead, you must include the gross amount of any such dividend paid by us out of our accumulated earnings and profits (as determined for United States federal income tax purposes) in your gross income, and it will be subject to tax at rates applicable to ordinary income.

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If you own shares or ADSs during any year that we are a PFIC with respect to you, you may be required to file Internal Revenue Service Form 8621. You should consult your tax advisor regarding the PFIC rules and potential filing and other requirements.

F. Dividends and Paying Agents

Not required.

G. Statement by Experts

Not required.

H. Documents on Display

We file periodic reports and other information with the SEC. The SEC maintains a website at www.sec.gov that contains reports and other information regarding us and other registrants that file electronically with the SEC. You may read and copy any document we file with the SEC at the SEC’s public reference room at 100 F Street, NE, Washington, D.C. 20549. Please call SEC at 1-800-SEC-0330 for further information on the operation of its public reference room. In addition, you may also inspect reports filed with the SEC and other information at our Tokyo headquarters, located at Iidabashi Grand Bloom, 2-10-2 Fujimi, Chiyoda-ku, Tokyo 102-0071, Japan.

I. Subsidiary Information

Not applicable.

113

Item 11. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risks from changes in interest rates, equity prices and foreign currency exchange rates.

Interest Rate Risk

As of March 31, 2018, our interest rate risk on short-term borrowings and capital lease obligations were not material since the weighted-average interest rate as of March 31, 2018 is reasonably low and we do not expect interest rates to rise sharply in the near future.

Equity Price Risk

The fair value of our investments, primarily in marketable securities, exposes us to equity price risks. In general, we have invested in highly liquid and low-risk instruments, which are not held for trading purposes. We are exposed to changes in the market prices of the securities. As of March 31, 2017 and 2018, the fair value of such investments was ¥5,780 million and ¥9,288 million, respectively. The potential loss in fair value resulting from a 10% adverse change in equity prices would be approximately ¥578 million and ¥929 million as of March 31, 2017 and 2018, respectively. See Note 4 “Other Investments” to our consolidated financial statements, included in this annual report on Form 20-F.

Foreign Currency Exchange Rate Risk

The assets held by us which are exposed to foreign currency exchange risk are mainly U.S. dollar denominated bank deposits. The carrying value, which also represents fair value, amounted to $11,339 thousand (¥1,321 million) and $14,364 thousand (¥1,623 million) as of March 31, 2017 and 2018, respectively. The potential loss in fair value for such financial instruments from a 10% adverse change in quoted foreign currency exchange rates would have been approximately ¥132 million and ¥162 million as of March 31, 2017 and 2018, respectively.

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Item 12. Description of Securities Other than Equity Securities

A. Debt Securities

Not applicable.

B. Warrants and Rights

Not applicable.

C. Other Securities

Not applicable.

D. American Depositary Shares

Fees and charges payable by ADR Holders

The following table shows the fees and charges that a holder of our ADR may have to pay to The Bank of New York Mellon, as Depositary, either directly or indirectly:

Services	Fees (USD)
Taxes and other governmental charges	As applicable
Such registration fees as may from time to time be in effect for the registration of transfers of Shares generally on the Shareholders’ register of the Issuer or Foreign Registrar and applicable to transfers of Shares to the name of the Depositary or its nominee or the Custodian or its nominee on the making of deposits or withdrawals hereunder	As applicable
Such cable, telex and facsimile transmission expenses as are expressly provided in this Deposit Agreement	As applicable
Such expenses as are incurred by the Depositary in the conversion of Foreign Currency	As applicable
The execution and delivery of Receipts and the surrender of Receipts	$5.00 or less per 100 ADR
Any cash distribution made pursuant to the Deposit Agreement	$0.02 or less per ADR
Receipt or Receipts for transfers made	$1.50 or less per certificate
The distribution of securities, such fee being in an amount equal to the fee for the execution and delivery of American Depositary Shares referred to above which would have been charged as a results of the deposit of such securities, but which securities are instead distributed by the Depositary to Owners	As applicable

Fees and other payments made by the Depositary to the Issuer

For the fiscal year beginning April 1, 2017 and ended March 31, 2018, The Bank of New York Mellon, as Depositary, reimbursed IIJ for the NASDAQ Stock Market listing fees of $45,000. The Bank of New York Mellon, as Depositary has also agreed to reimburse IIJ for its annual stock exchange (NASDAQ Stock Market) listing fees for future years. Furthermore, from April 1, 2017 to March 31, 2018, the Bank of New York Mellon has waived a total of $58,660.05 in fees associated with the administration of the ADR program, investor relations expenses and administrative fees for routine corporate actions in addition to their standard fees for providing investor relations information services.

115

PART II

Item 13. Defaults, Dividend Arrearages and Delinquencies

None.

Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds

None.

Item 15. Controls and Procedures

(a) Disclosure Controls and Procedures

As of the end of the fiscal year ended March 31, 2018, our management, with the participation of Koichi Suzuki, our chairman, chief executive officer and representative director, and Akihisa Watai, our director, chief financial officer and chief accounting officer, performed an evaluation of our disclosure controls and procedures.

Under Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, disclosure controls and procedures means our controls and other procedures that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934 is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate to allow timely decisions regarding required disclosure.

Based on that evaluation, our chief executive officer and chief financial officer concluded that our disclosure controls and procedures were effective as of March 31, 2018.

(b) Management’s Annual Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting for our company.

Under Rules 13a-15(f) of the Securities Exchange Act of 1934, internal control over financial reporting means a process designed by, or under the supervision of, our chief executive officer and chief financial officer and effected by our Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America and includes those policies and procedures that:

● pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets,

● provide reasonable assurance that transactions are recorded as necessary to permit preparation of our financial statements in accordance with accounting principles generally accepted in the United States of America, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors, and

116

● provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluations of effectiveness to future periods are subject to the risk controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Our management evaluated the effectiveness of our internal control over financial reporting using the criteria set forth in Internal Control– Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on this evaluation, management concluded that our internal control over financial reporting was effective as of March 31, 2018.

The effectiveness of our internal control over financial reporting has been audited by Deloitte Touche Tohmatsu LLC, an independent registered public accounting firm, as stated in their report, presented hereafter.

(c) Attestation Report of the Registered Public Accounting Firm

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of
      Internet Initiative Japan Inc.:

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Internet Initiative Japan Inc. and subsidiaries (the “Company”) as of March 31, 2018, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of March 31, 2018, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended March 31, 2018 of the Company, and our report dated June 29, 2018 expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

117

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ DELOITTE TOUCHE TOHMATSU LLC
Tokyo, Japan
June 29, 2018

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(d) Changes in Internal Control Over Financial Reporting

With the participation of our chief executive officer and chief financial officer, our management also evaluated any change in our internal control over financial reporting that occurred during the fiscal year ended March 31, 2018. Based on that evaluation, our chief executive officer and chief financial officer concluded that no changes were made in our internal control over financial reporting that occurred during the fiscal year ended March 31, 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

119

Item 16A.   Audit Committee Financial Expert

At our shareholders’ meeting in June 2016, two company auditors were nominated and our Board of Company Auditors determined that one of the nominated company auditors serving on the Board of Company Auditors, Yasuhiro Akatsuka, is an “audit committee financial expert” as defined in Item 16A. of Form 20-F and to be independent under the standards of the NASDAQ Stock Market. Mr. Akatsuka is independent from us.

Item 16B.   Code of Ethics

At our Board of Directors Meeting on April 28, 2004, we adopted a Code of Ethics, the Internet Initiative Japan Code of Conduct, applicable to all employees and officers, including our chief executive officer, chief operating officer, chief financial officer and chief accounting officer. The Code of Conduct is attached as Exhibit 11.1 of this annual report.

Item 16C.   Principal Accountant Fees and Services

Independent Auditor Fees and Services

The Board of Directors engaged Deloitte Touche Tohmatsu LLC to perform an annual audit of our financial statements for each of the fiscal years ended March 31, 2017 and 2018. The following table sets forth the aggregate fees billed for services rendered by Deloitte Touche Tohmatsu LLC and its member firms for each of the last two fiscal years.

	Fiscal year ended March 31,
	2017		2018
	(millions of yen)
Audit fees (1)	¥	126	¥	129
Audit-related fees		–		–
Tax fees (2)		3		–
All other fees(3)		1		2
Total fees	¥	130	¥	131

_________

(1) These are the aggregate fees billed for the fiscal year for professional services rendered by Deloitte Touche Tohmatsu LLC for the audit of our annual financial statements, the audit of our internal control over financial reporting and services that are normally provided in connection with statutory and regulatory filings or engagements for those fiscal years.

(2) These are the aggregate fees billed for the fiscal year for professional services rendered by member firms of Deloitte Touche Tohmatsu Limited, such as Deloitte Tax LLP, for tax compliance, tax advice and tax planning.

(3) These are the aggregate fees billed for the training services rendered by Tohmatsu Innovation Co., Ltd.

Board of Company Auditors Pre-Approval Policies and Procedures

The Board of Company Auditors has adopted policies and procedures for pre-approving all audit and permissible non-audit work performed by independent registered public accounting firm in accordance with Rule 2-01(c)(7)(i)(B) under Regulation S-X. Under those policies and procedures, the Board of Company Auditors must pre-approve individual audit and non-audit services to be provided to us by our independent registered public accounting firm and its affiliates. Those policies and procedures also describe prohibited non-audit services that may never be provided by independent registered public accounting firm.

All of the services provided by our independent registered public accounting firm from May 6, 2003, when our pre-approval policies went into effect, through the end of the fiscal year ended March 31, 2018 were pre-approved by the Board of Company Auditors pursuant to the pre-approval policies described above, and none of such services were approved pursuant to the procedures described in Rule 2-01(c)(7)(i)(C) of Regulation S-X, which waives the general requirement for pre-approval in certain circumstances.

120

Item 16D. Exemptions from the Listing Standards for Audit Committees

With respect to the requirements of Rule 10A-3 under the Securities Exchange Act of 1934 relating to listed company audit committees, which apply to us through Rules 5605(c) of the NASDAQ Listing Rules, we rely on an exemption provided by paragraph (c) (3) of that Rule available to foreign private issuers with Boards of Company Auditors meeting certain requirements. For a NASDAQ-listed Japanese company with a Board of Company auditors, the requirements for relying on paragraph (c) (3) of Rule 10A-3 are as follows:

· The Board of Company Auditors must be established, and its members must be selected, pursuant to Japanese law expressly requiring such a board for Japanese companies that elect to have a corporate governance system with company auditors,

· Japanese law must and does require the Board of Company Auditors to be separate from the Board of Directors,

· None of the members of the Board of Company Auditors may be elected by management, and none of the listed company’s executive officers may be a member of the Board of Company Auditors,

· Japanese law must and does set forth standards for the independence of the members of the Board of Company Auditors from the listed company or its management, and

· The Board of Company Auditors, in accordance with Japanese law or the registrant’s governing documents, must be responsible, to the extent permitted by Japanese law, for the appointment, retention and oversight of the work of any registered public accounting firm engaged (including, to the extent permitted by Japanese law, the resolution of disagreements between management and the auditor regarding financial reporting) for the purpose of preparing or issuing an audit report or performing other audit, review or attest services for the listed company, including its principal accountant which audits its consolidated financial statements included in its annual reports on Form 20-F.

To the extent permitted by Japanese law:

· The Board of Company Auditors must establish procedures for (i) the receipt, retention and treatment of complaints received by us regarding accounting, internal accounting controls, or auditing matters, and (ii) the confidential, anonymous submission by our employees of concerns regarding questionable accounting or auditing matters,

· The Board of Company Auditors must have the authority to engage independent counsel and other advisers, as it determines necessary to carry out its duties, and

· The listed company must provide for appropriate funding, as determined by its Board of Company Auditors, for payment of (i) compensation to any registered public accounting firm engaged for the purpose of preparing or issuing an audit report or performing other audit, review or attest services for us, (ii) compensation to any advisers employed by the Board of Company Auditors, and (iii) ordinary administrative expenses of the Board of Company Auditors that are necessary or appropriate in carrying out its duties.

In our assessment, our Board of Company Auditors, which meets the requirements for reliance on the exemption in paragraph (c) (3) of Rule 10A-3 described above, is not materially less effective than an audit committee meeting all the requirements of paragraph (b) of Rule 10A-3 (without relying on any exemption provided by that Rule) at acting independently of management and performing the functions of an audit committee as contemplated therein.

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Item 16E.   Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Not applicable.

Item 16F.   Change in Registrant's Certifying Accountant

Not applicable.

Item 16G.   Corporate Governance

NASDAQ Listing Rule 5615 provides that a foreign private issuer may follow its home country practice in lieu of the requirements of Rule 5600, provided that such foreign private issuer discloses in its annual reports filed with the Securities and Exchange Commission or on its website each requirement of Rule 5600 that it does not follow and describes the home country practice followed by the issuer in lieu of such requirements.

NASDAQ Listing Rule 5605(b), Rule 5605(d) and Rule 5605(e) require that (i) a majority of the Board of Directors be independent directors as defined in Rule 5605(a)(2), (ii) independent directors have regularly scheduled meetings at which only they are present, (iii) compensation of the chief executive officer and other executive officers be determined, or recommended to the Board of Directors for determination, either by a majority of the independent directors or by a compensation committee comprised solely of independent directors, and (iv) director nominees be selected, or recommended for selection by the Board of Directors, either by a majority of the independent directors or by a nominations committee comprised solely of independent directors, in accordance with the nominations process set forth in a formal written charter or board resolution. For large Japanese companies under the Corporation Law including us, which employ a corporate governance system based on a Board of Company Auditors, the Corporation Law has no independence requirement with respect to directors. The task of overseeing management and accounting firms is assigned to the company auditors, who are separate and independent from the company’s management. We are required to have at least 50% “outside” company auditors who must meet additional independence requirements under the Corporation Law. An outside company auditor is defined in the Corporation Law as a company auditor who had not served as a director, manager or any other employee of the company or any of its subsidiaries at any time prior to the appointment.

NASDAQ Listing Rule 5605(c) requires that (i) each issuer have adopted a formal written audit committee charter meeting the requirements of Rule 5605(c)(1) and (ii) the issuer have an audit committee of at least three members who are independent as defined under Rule 5605(a)(2), meet the independence criteria set forth in Rule 10A-3(b)(1) under the U.S. Securities Exchange Act of 1934 and satisfy certain other criteria. We employ the company auditor system as described above. Under this system, the Board of Company Auditors is a legally separate and independent body from the Board of Directors. The function of the Board of Company Auditors is similar to that of independent directors, including those who are members of the audit committee, of a U.S. company: to monitor the performance of the directors, and review and express an opinion on the method of auditing by the company’s accounting firm and on such accounting firm’s audit reports, for the protection of the company’s shareholders. We are required to have at least three company auditors. In addition, our auditors serve a longer term than our directors. With respect to the requirements of Rule 10A-3 under the U.S. Securities Exchange Act of 1934 relating to listed company audit committees, we rely on an exemption under paragraph (c)(3) of that rule which is available to foreign private issuers with boards of company auditors meeting certain criteria.

122

NASDAQ Listing Rule 5620(c) provides that each issuer provide for a quorum as specified in its by-laws for any meeting of holders of common stock, which shall be at least 33 1/3% of the outstanding shares of the issuer’s voting common stock. We provide for a quorum as specified in the Articles of Incorporation for any meeting of holders of common stock, which shall be at least one-third of our outstanding shares of voting common stock.

NASDAQ Listing Rule 5620(b) provides that each issuer solicit proxies and provide proxy statements for all meetings of shareholders and provide copies of such proxy solicitation to NASDAQ. As a Japanese company whose shares are listed on the securities exchanges defined in the Financial Instrument and Exchange Act, we may, but are not required to, solicit proxies for meetings of shareholders. If we solicit proxies for a meeting of shareholders, we are required to provide proxy statements and documents for reference as provided for in the Financial Instrument and Exchange Act and provide copies of such proxy statements and documents for reference to the Kanto Local Finance Bureau.

NASDAQ Listing Rule 5630(a) provides that each issuer conduct appropriate review and oversight of all related party transactions for potential conflict of interest situations on an ongoing basis by the issuer’s audit committee or another independent body of the Board of Directors. Following the requirements of the Corporation Law, we require a director to obtain the approval of the Board of Directors in order for such director to accept a transfer of a product or any other asset of IIJ, to transfer a product or any other asset of such director to IIJ, to receive a loan from IIJ, or to effect any other transaction with IIJ, for himself or a third-party.

NASDAQ Listing Rule 5635 provides that shareholder approval be obtained prior to the issuance of designated securities under subparagraphs (a), (b), (c) or (d) of Rule 5635. Where a Japanese joint stock company (Kabushiki-Gaisha) issues common shares or other shares, stock acquisition rights or bonds with stock acquisition rights under the Corporation Law, it is necessary for the Board of Directors to determine the conditions of issuance; provided, however, that this shall not apply if the Articles of Incorporation provide that such conditions shall be determined by the shareholders’ meeting. Currently, IIJ’s Articles of Incorporation do not provide for any such exception. Additionally, if the company issues such securities to persons other than shareholders (in case of common shares or other shares) at a specially favorable issue price or (in case of stock acquisition rights or bonds with stock acquisition rights) on specially favorable conditions, even when there are provisions related thereto in the Articles of Incorporation, some matters related to such issuance shall be resolved by special resolution of the shareholders’ meeting.

Item 16H.   Mine Safety Disclosure

Not applicable.

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PART III

Item 17.   Financial Statements

Not applicable.

Item 18.   Financial Statements

See Financial Statements for Internet Initiative Japan Inc. and Subsidiaries beginning on page F-1.

Item 19.   Exhibits

1.1	Articles of Incorporation, as amended (English translation)1
1.2	Share Handling Regulations, as amended (English translation)2
1.3	Regulations of the Board of Directors, as amended (English translation)2
1.4	Regulations of the Board of Company Auditors, as amended (English translation)3
2.1	Bylaws of the IIJ Group Employee Shareholders’ Association (English translation)4
2.2	Form of Deposit Agreement among IIJ, The Bank of New York Mellon as depositary and all owners and holders from time to time of American Depositary Receipts, including the form of American Depositary Receipt5
2.3	Bylaws of the IIJ Group Director Stock Purchase Plan (English translation)6
4.1	Shareholders’ Agreement Relating to the Establishment of INTERNET MULTIFEED CO., dated August 20, 1997, between Nippon Telegraph and Telephone Corporation and the Registrant (English translation)7
4.2	Basic Agreement to Delegate Services, dated April 1, 1998, between Internet Initiative Japan Inc. and Net Care, Inc. (changed its trade name to IIJ Engineering Inc. on October 1, 2014) (English translation)7
4.3	Joint Venture Agreement, dated January 19, 2006, between Internet Initiative Japan Inc. and Konami Corporation (English translation)8
4.4	Service Agreement, dated March 25, 2004, between Internet Initiative Japan Inc. and IIJ America Inc.9
4.5	Agreement on Limited Liability between Internet Initiative Japan Inc. and outside directors and outside company auditors (English translation) 10
4.6	Solutions Engagement Agreement, dated May 31, 2010 between Communications Services KK (changed its trade name to IIJ-Global Solutions Inc. on September 1, 2010) and IBM Japan, Ltd.11
8.1	List of Significant Subsidiaries (See “Our Group Companies” in Item 4.B. of this Form 20-F)
11.1	Internet Initiative Japan Code of Conduct, as amended 12
12.1	Certification of the principal executive officer required by 17 C.F.R. 240. 13a-14(a)
12.2	Certification of the principal financial officer required by 17 C.F.R. 240. 13a-14(a)
13.1	Certification of the chief executive officer required by 18 U.S.C. Section 1350
13.2	Certification of the chief financial officer required by 18 U.S.C. Section 1350

(1)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on June 30, 2017.
(2)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on June 28, 2013.
(3)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on June 30, 2016.
(4)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on June 30, 2017.
(5)	Incorporated by reference to the Registration Statement on Form F-6 (File No. 333-110862) filed on December 2, 2003.
(6)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on September 28, 2010.
(7)	Incorporated by reference to the corresponding exhibit to our Form F-1 Registration Statement (File No. 333-10584) declared effective on August 3, 1999. (Paper)
(8)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on July 11, 2006.
(9)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on July 23, 2004.
(10)	We entered into a Limitation of Liability Agreement with Mr. Yasuhiro Akatsuka and Mr. Takashi Michishita as outside company auditors on June 24, 2016, and with Mr. Tadashi Okamura, Mr. Hiroki Watanabe and Mr. Takashi Tsukamoto as outside directors on June 28, 2017, and with Mr. Yasurou Tanahashi, Mr. Shingo Oda and Mr. Shinobu Umino as outside directors on June 28, 2018
(11)	Schedules, annexes and similar attachments have been omitted pursuant to Item 601(b)(2) of Regulation S-K. IIJ agrees to furnish supplementary copies of the omitted schedules, annexes and similar attachments to the SEC upon request. A list briefly describing the omitted schedules, annexes and similar attachments was incorporated as a reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on September 28, 2010.
(12)	Incorporated by reference to the corresponding exhibit to our annual report on Form 20-F (File No. 0-30204) filed on June 30, 2008.

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SIGNATURE

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

	Internet Initiative Japan Inc.
	By:	/s/ Koichi Suzuki
		Name:	Koichi Suzuki
		Title:	Chairman, Chief Executive Officer
			and Representative Director
Date: June 29, 2018

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Internet Initiative Japan Inc. and Subsidiaries


Index to Consolidated Financial Statements

	Page
Report of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets as of March 31, 2017 and 2018	F-3
Consolidated Statements of Income for Each of the Three Years in the Period Ended March 31, 2018	F-5
Consolidated Statements of Comprehensive Income for Each of the Three Years in the Period Ended March 31, 2018	F-7
Consolidated Statements of Shareholders' Equity for Each of the Three Years in the Period Ended March 31, 2018	F-8
Consolidated Statements of Cash Flows for Each of the Three Years in the Period Ended March 31, 2018	F-9
Notes to Consolidated Financial Statements	F-12

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of

Internet Initiative Japan Inc.:

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Internet Initiative Japan Inc. and subsidiaries (the “Company”) as of March 31, 2018 and 2017, the related consolidated statements of income, comprehensive income, shareholders' equity, and cash flows for each of the three years in the period ended March 31, 2018 and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of March 31, 2018 and 2017, and the results of its operations and its cash flows for each of the three years in the period ended March 31, 2018, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of March 31, 2018, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated June 29, 2018 expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ DELOITTE TOUCHE TOHMATSU LLC
Tokyo, Japan
June 29, 2018

We have served as the Company's auditor since 1996. 

F-2

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Balance Sheets

March 31, 2017 and 2018

	Thousands of Yen
ASSETS	2017		2018
CURRENT ASSETS:
Cash and cash equivalents	¥	21,958,591	¥	21,402,892
Accounts receivable, net of allowance for doubtful accounts of ¥107,684 thousand and ¥123,453 thousand at March 31, 2017 and 2018, respectively (Notes 5, 6 and 22)		27,383,692		31,830,882
Inventories (Note 3)		2,798,054		1,714,547
Prepaid expenses―current		7,610,925		8,442,981
Deferred tax assets―current (Note 12)		1,298,469		-
Other current assets, net of allowance for doubtful accounts of ¥15,192 thousand and ¥720 thousand at March 31, 2017 and 2018, respectively (Notes 5, 9 and 22)		2,672,008		3,793,449
Total current assets		63,721,739		67,184,751
INVESTMENTS IN EQUITY METHOD INVESTEES (Note 6)		3,150,175		5,246,313
OTHER INVESTMENTS (Notes 4, 17, 18 and 19)		7,924,914		11,374,442
PROPERTY AND EQUIPMENT—Net (Notes 7 and 9)		39,775,444		46,414,250
GOODWILL (Note 8)		6,169,609		6,082,472
OTHER INTANGIBLE ASSETS—Net (Note 8)		3,087,017		2,704,668
GUARANTEE DEPOSITS (Note 9)		3,060,365		3,422,443
DEFERRED TAX ASSETS―Noncurrent (Note 12)		80,566		183,808
NET INVESTMENT IN SALES-TYPE LEASES―Noncurrent (Note 9)		2,047,682		1,545,293
PREPAID EXPENSES―Noncurrent		6,607,437		7,965,889
OTHER ASSETS, net of allowance for doubtful accounts and loans of ¥61,877 thousand and ¥60,929 thousand at March 31, 2017 and 2018, respectively (Notes 5 and 18)		1,770,201		1,324,490
TOTAL	¥	137,395,149	¥	153,448,819

F-3

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Balance Sheets
March 31, 2017 and 2018

	Thousands of Yen
LIABILITIES AND SHAREHOLDERS' EQUITY	2017			2018
CURRENT LIABILITIES:
Short-term borrowings (Note 11)	¥	9,250,000		¥	9,250,000
Capital lease obligations—current portion (Note 9 and 22)		4,818,723			5,655,875
Accounts payable—trade (Notes 6 and 22)		14,653,065			14,950,920
Accounts payable—other		2,308,790			1,448,423
Income taxes payable (Note 12)		1,075,745			1,928,037
Accrued expenses		2,755,581			3,111,385
Deferred income—current		3,750,542			4,237,676
Other current liabilities (Notes 10 and 12)		1,370,661			1,562,717
Total current liabilities		39,983,107			42,145,033
LONG-TERM BORROWINGS (Notes 11 and 18)		8,500,000			15,500,000
CAPITAL LEASE OBLIGATIONS—Noncurrent (Note 9 and 22)		10,384,643			10,920,726
ACCRUED RETIREMENT AND PENSION COSTS (Note 13)		3,532,965			3,724,634
DEFERRED TAX LIABILITIES—Noncurrent (Note 12)		963,845			688,787
DEFERRED INCOME—Noncurrent		3,656,612			3,952,279
OTHER NONCURRENT LIABILITIES (Note 10 and 11)		2,993,777			2,528,803
Total liabilities		70,014,949			79,460,262
COMMITMENTS AND CONTINGENCIES (Note 17)
SHAREHOLDERS' EQUITY (Notes 4, 13, 14 and 15):
Common stock—authorized, 75,520,000 shares; issued and outstanding, 46,711,400 and 46,713,800 shares at March 31, 2017 and 2018, respectively		25,509,499			25,511,804
Additional paid-in capital		36,117,511			36,175,937
Retained earnings		4,511,945			8,404,228
Accumulated other comprehensive income		2,499,700			5,074,872
Treasury stock—1,650,909 shares held by the company at March 31, 2017 and 2018, respectively		(1,896,784	)		(1,896,784	)
Total Internet Initiative Japan Inc. shareholders' equity		66,741,871			73,270,057
NONCONTROLLING INTERESTS		638,329			718,500
Total equity		67,380,200			73,988,557
TOTAL	¥	137,395,149		¥	153,448,819

See notes to consolidated financial statements.

F-4

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Income
Three Years in the Period Ended March 31, 2018

	Thousands of Yen
	2016			2017			2018
REVENUES (Notes 6 and 22):
Network services:
Internet connectivity services (enterprise)	¥	17,597,343		¥	22,633,739		¥	27,943,656
Internet connectivity services (consumer)		15,255,596			21,734,968			24,761,487
WAN services		25,176,730			26,459,697			29,295,097
Outsourcing services		21,265,895			22,167,432			26,118,657
Total		79,295,564			92,995,836			108,118,897
Systems integration:
Systems construction		21,144,677			22,625,753			22,527,433
Systems operation and maintenance		33,043,669			35,122,940			37,903,235
Total		54,188,346			57,748,693			60,430,668
Equipment sales		3,275,220			2,994,449			3,470,400
ATM operation business		3,888,878			4,050,081			4,030,684
Total revenues		140,648,008			157,789,059			176,050,649
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Cost of network services		64,239,600			76,386,849			88,697,639
Cost of systems integration		46,225,629			50,992,480			53,612,063
Cost of equipment sales		2,968,711			2,735,169			3,142,262
Cost of ATM operation business		2,558,883			2,427,870			2,365,403
Total costs		115,992,823			132,542,368			147,817,367
Sales and marketing (Note 21)		10,588,887			11,431,467			12,688,046
General and administrative (Note 2, 7 and 8)		7,470,746			8,214,598			8,295,583
Research and development		455,198			466,319			487,451
Total costs and expenses		134,507,654			152,654,752			169,288,447
OPERATING INCOME		6,140,354			5,134,307			6,762,202
OTHER INCOME (EXPENSES):
Dividend income		93,054			117,567			242,576
Interest income		27,587			35,259			30,527
Interest expense		(241,057	)		(303,685	)		(375,202	)
Foreign exchange loss, net		(71,270	)		(45,116	)		(15,863	)
Net gain on sales of other investments (Note 4)		23,765			216,646			1,068,303
Loss on sales of an investment in equity method investee		-			(12,070	)		-
Impairment of other investments (Note 4)		(14,729	)		(30,554	)		(109,840	)
Other—net		235,630			314,806			237,420
Other income—net		52,980			292,853			1,077,921
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)	¥	6,193,334		¥	5,427,160		¥	7,840,123

F-5

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Income
Three Years in the Period Ended March 31, 2018

	Thousands of Yen
	2016			2017			2018
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)	¥	6,193,334		¥	5,427,160		¥	7,840,123
INCOME TAX EXPENSE (Note 12)		2,183,531			2,224,880			2,695,839
EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES (Note 6)		180,219			129,791			134,656
NET INCOME		4,190,022			3,332,071			5,278,940
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(151,740	)		(165,561	)		(169,991	)
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥	4,038,282		¥	3,166,510		¥	5,108,949

	Shares
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER SHARE (Note 16):
Basic weighted-average number of common shares outstanding		45,950,098	45,652,981	45,062,878
Diluted weighted-average number of common shares outstanding		46,043,383	45,772,470	45,215,686

	Yen
BASIC NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER COMMON SHARE	¥	87.88	¥	69.36	¥	113.37
DILUTED NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER COMMON SHARE		87.71		69.18		112.99

See notes to consolidated financial statements.

F-6

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Comprehensive Income
Three Years in the Period Ended March 31, 2018

	Thousands of Yen
	2016			2017			2018
NET INCOME	¥	4,190,022		¥	3,332,071		¥	5,278,940
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX (Note 15):
Foreign currency translation adjustments		(67,652	)		(181,110	)		(904	)
Unrealized holding gain (loss) on securities		(275,952	)		1,280,095			2,542,210
Defined benefit pension plans		(394,418	)		204,046			33,866
TOTAL COMPREHENSIVE INCOME		3,452,000			4,635,102			7,854,112
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(155,698	)		(165,561	)		(169,991	)
COMPREHENSIVE INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥	3,296,302		¥	4,469,541		¥	7,684,121

See notes to consolidated financial statements.

F-7

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Shareholders' Equity
Three Years in the Period Ended March 31, 2018

	Amounts in thousands except share data
				Internet Initiative Japan Inc. Shareholders’ Equity
	Total Equity			Retained earnings (Accumulated Deficit) (Note 14)			Accumulated Other Comprehensive Income (Notes 13 and 15)			Shares of Common Stock Outstanding		Common Stock		Treasury Stock (Note 14)			Additional Paid-in Capital			Noncontrolling Interests
BALANCE, MARCH 31, 2015	¥	62,843,780		¥	(556,162	)	¥	1,938,649			46,701,000	¥	25,499,857	¥	(392,070	)	¥	36,014,128		¥	339,378
Subsidiary stock issuance		3,692																			3,692
Issuance of common stock upon exercise of stock options		10									10,400		9,642					(9,632	)
Stock-based compensation (Note 14)		55,337																55,337
Net income		4,190,022			4,038,282																151,740
Other comprehensive loss, net of tax		(738,022	)					(741,980	)												3,958
Dividends paid (Note 14)		(1,010,844	)		(1,010,844	)
BALANCE, MARCH 31, 2016		65,343,975			2,471,276			1,196,669			46,711,400		25,509,499		(392,070	)		36,059,833			498,768
Dividends paid to noncontrolling interests		(26,000	)																		(26,000	)
Stock-based compensation (Note 14)		57,678																57,678
Net income		3,332,071			3,166,510																165,561
Other comprehensive income, net of tax		1,303,031						1,303,031
Dividends paid (Note 14)		(1,125,841	)		(1,125,841	)
Purchase of treasury stock		(1,504,714	)												(1,504,714	)
BALANCE, MARCH 31, 2017	¥	67,380,200		¥	4,511,945		¥	2,499,700			46,711,400	¥	25,509,499	¥	(1,896,784	)	¥	36,117,511		¥	638,329
Issuance of common stock upon exercise of stock options		2									2,400		2,305					(2,303	)
Dividends paid to noncontrolling interests		(46,800	)																		(46,800	)
Change in ownership for non-controlling interests and others		(39,612	)															3,408			(43,020	)
Stock-based compensation (Note 14)		57,321																57,321
Net income		5,278,940			5,108,949																169,991
Other comprehensive income, net of tax		2,575,172						2,575,172
Dividends paid (Note 14)		(1,216,666	)		(1,216,666	)
BALANCE, MARCH 31, 2018	¥	73,988,557		¥	8,404,228		¥	5,074,872			46,713,800	¥	25,511,804	¥	(1,896,784	)	¥	36,175,937		¥	718,500

F-8

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Cash Flows
Three Years in the Period Ended March 31, 2018

	Thousands of Yen
	2016			2017			2018
OPERATING ACTIVITIES:
Net income	¥	4,190,022		¥	3,332,071		¥	5,278,940
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		9,921,555			10,893,657			12,364,873
Impairment loss on intangible assets		11,000			81,000			-
Provision for retirement and pension costs, less payments		200,871			252,825			241,868
Provision for allowance for doubtful accounts		48,407			68,300			94,839
Gain on sales of property and equipment		(38,219	)		(31,809	)		(12,376	)
Loss on disposal of property and equipment		66,169			170,971			112,329
Net gain on sales of other investments		(23,765	)		(216,646	)		(1,068,303	)
Impairment of other investments		14,729			30,554			109,840
Loss on sales of an investment in equity method  investee		-			12,070			-
Foreign exchange loss (gain), net		(51,727	)		18,152			32,514
Equity in net income of equity method investees, net of dividend received		(124,141	)		(78,709	)		(83,465	)
Deferred income tax expense (benefit)		249,115			(94,343	)		(312,933	)
Others		(12,341	)		(44,667	)		29,466
Changes in operating assets and liabilities
Increase in accounts receivable		(1,565,857	)		(3,751,392	)		(4,823,584	)
Decrease in net investment in sales-type lease—noncurrent		98,511			492,530			502,389
Decrease (increase) in inventories		(777,192	)		(800,296	)		1,085,649
Increase in prepaid expenses		(1,083,665	)		(2,859,763	)		(842,521	)
Increase in other current and noncurrent assets		(1,485,629	)		(3,317,968	)		(2,194,591	)
Increase in accounts payable		1,760,207			827,792			358,299
Increase (decrease) in income taxes payable		579,414			(2,621	)		861,899
Increase (decrease) in accrued expenses		(32,288	)		(167,597	)		351,710
Increase in deferred income—current		418,162			1,257,870			487,931
Increase in deferred income—noncurrent		201,897			604,269			332,765
Increase (decrease) in other current and noncurrent liabilities		(513,647	)		691,442			354,226
Net cash provided by operating activities—(Forward)	¥	12,051,588		¥	7,367,692		¥	13,261,764

F-9

Internet Initiative Japan Inc. and Subsidiaries

Consolidated Statements of Cash Flows
Three Years in the Period Ended March 31, 2018

	Thousands of Yen
	2016			2017			2018
Net cash provided by operating activities—(Forward)	¥	12,051,588		¥	7,367,692		¥	13,261,764
INVESTING ACTIVITIES:
Purchases of property and equipment		(10,898,533	)		(10,623,993	)		(15,770,587	)
Proceeds from sales of property and equipment		2,574,449			3,046,189			3,305,813
Purchases of available-for-sale securities		(59,490	)		-			-
Purchases of other investments		(376,067	)		(410,587	)		(286,695	)
Investment in equity method investees		(338,166	)		(99,000	)		(2,004,808	)
Proceeds from sales of available-for-sale securities		141,235			4,840			1,206,516
Proceeds from sales of other investments		808,465			534,549			157,341
Payments of guarantee deposits		(348,005	)		(50,345	)		(380,343	)
Refund of guarantee deposits		21,567			92,002			26,458
Payments for refundable insurance policies		(56,362	)		(56,476	)		(56,362	)
Proceeds from subsidies		200,000			200,000			48,976
Refund from insurance policies		10,108			-			-
Proceeds from sale of stock of a subsidiary, net of cash divested (Note 2)		-			-			726,081
Other		(56,029	)		(13,000	)		(9,715	)
Net cash used in investing activities		(8,376,828	)		(7,375,821	)		(13,037,325	)
FINANCING ACTIVITIES:
Proceeds from short-term borrowings with initial maturities over three months and long-term borrowings		1,550,000			8,550,000			9,550,000
Repayments of short-term borrowings with initial maturities of over three months		(1,550,000	)		(50,000	)		(2,550,000	)
Principal payments under capital leases		(4,194,215	)		(4,819,530	)		(5,723,729	)
Proceeds from long-term accounts payable		-			1,498,306			-
Repayments of long-term accounts payable		-			(30,122	)		(571,373	)
Net decrease in short-term borrowings with initial maturities less than three months		-			-			(150,000	)
Proceeds from issuance of subsidiary stock to noncontrolling interests		3,692			-			-
Dividends paid		(1,010,844	)		(1,125,841	)		(1,216,666	)
Payments for purchase of treasury stock		-			(1,504,714	)		-
Other		10			(26,000	)		(86,410	)
Net cash provided by (used in) financing activities		(5,201,357	)		2,492,099			(748,178	)
FORWARD	¥	(1,526,597	)	¥	2,483,970		¥	(523,739	)

F-10

	Thousands of Yen
	2016			2017			2018
FORWARD	¥	(1,526,597	)	¥	2,483,970		¥	(523,739	)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		2,059			(94,474	)		(31,960	)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		(1,524,538	)		2,389,496			(555,699	)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR		21,093,633			19,569,095			21,958,591
CASH AND CASH EQUIVALENTS, END OF YEAR	¥	19,569,095		¥	21,958,591		¥	21,402,892
ADDITIONAL CASH FLOW INFORMATION:
Interest paid	¥	241,260		¥	302,035		¥	368,413
Income taxes paid		1,377,753			2,462,106			2,063,530
NONCASH INVESTING AND FINANCING ACTIVITIES:
Acquisition of assets by entering into capital leases		8,065,674			8,301,695			7,108,629
Facilities purchase liabilities		1,497,767			2,308,790			1,448,423
Asset retirement obligation		45,169			31,980			49,609

See notes to consolidated financial statements.

F-11

Internet Initiative Japan Inc. and Subsidiaries

Notes to Consolidated Financial Statements

1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Internet Initiative Japan Inc. (“IIJ,” a Japanese corporation) was founded in December 1992 to develop and operate Internet access services and other Internet-related services in Japan. As of March 31, 2018, 26.9% of IIJ’s voting shares were jointly owned by Nippon Telegraph and Telephone Corporation (“NTT”) and its subsidiary. IIJ and its subsidiaries (collectively, the “Company”) provide customers substantially operating in Japan with Internet connectivity services, Wide Area Network (“WAN”) services and outsourcing services. The Company also provides systems integration which consists of systems construction and systems operation and maintenance. In addition, a subsidiary of IIJ provides Automated Teller Machines (“ATM”) operation services.

Certain Significant Risks and Uncertainties

The Company relies on telecommunications carriers for a significant portion of its network backbone, on regional NTT subsidiaries, electric power companies and their affiliates for local connections to customers and NTT DoCoMo Inc. (“NTT Docomo”) for mobile connectivity as an MVNO. Currently, NTT Communications Corporation, a wholly owned subsidiary of NTT, and NTT Docomo are major providers of network infrastructure for the Company. The Company believes that its use of multiple carriers and suppliers significantly mitigates the risk of damages from service disruptions. However, any disruption of telecommunication services could have an adverse effect on operating results.

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of accounts receivable. The Company’s management believes that the risks associated with accounts receivable are mitigated by the large number of customers comprising its customer base and its credit line control. The Company also conducts an evaluation of a new customer’s financial condition at the inception of a transaction and continuously monitors delays in payment for each customer.

Summary of Significant Accounting Policies

Basis of Presentation—IIJ maintains its records and prepares its financial statements in accordance with generally accepted accounting principles in Japan. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform to generally accepted accounting principles in the United States of America (“U.S. GAAP”). These adjustments were not recorded in the statutory accounts.

Consolidation—The consolidated financial statements include the accounts of IIJ and all of its subsidiaries,which are IIJ Engineering Inc. (“IIJ-EG,” which was renamed from Net Care, Inc.), IIJ America, Inc. (“IIJ-America”), Netchart Japan Inc. (“NCJ”), hi-ho Inc. (“hi-ho”), Trust Networks Inc. (“Trust Networks”), IIJ Innovation Institute Inc. (“IIJ-II”), IIJ Global Solutions Inc. (“IIJ-Global”), IIJ Europe Limited (“IIJ-Europe”), RYUKOSHA NETWARE Inc. (“RYUKOSHA”) and eight other foreign subsidiaries. All of the subsidiaries, except for IIJ-America, IIJ-Europe and other foreign subsidiaries, have fiscal years ending March 31. IIJ-America, IIJ-Europe and other foreign subsidiaries’ fiscal year-end is December 31 and such date was used for purposes of preparing the consolidated financial statements as it is not practicable for the foreign subsidiaries to report their financial results as of March 31. There were no significant events that occurred during the intervening period that would require adjustment to or disclosure in the accompanying consolidated financial statements. Intercompany transactions and balances have been eliminated in consolidation.

Investments in companies over which IIJ has significant influence but not control are accounted for by the equity method. For other-than-temporary declines in the value of investments in equity method investees below the carrying amount, the investments are reduced to fair value and an impairment loss is recognized. Equity method goodwill, which is the portion of the difference between the cost of an investment and the amount of underlying equity in net assets of an investee, is not amortized, but equity method investments are continuously reviewed for impairment in accordance with Accounting Standards Codification (“ASC”) 323, “Investments-Equity Method and Joint Ventures.”

F-12

A subsidiary or equity method investee may issue its shares to third parties at amounts per share in excess of or less than the Company’s average per share carrying value. Changes in a parent’s ownership interest while the parent retains its controlling financial interest in its subsidiary are accounted for as equity transactions.

Use of Estimates—The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Significant estimates and assumptions used are primarily in the areas of evaluation of investments, valuation allowances for deferred tax assets, allowance for doubtful accounts, determination of pension benefit costs and obligations, estimated useful lives of fixed assets and intangible assets with finite useful lives and impairment of long-lived assets, goodwill and intangible assets deemed to have indefinite useful lives. Actual results could differ from those estimates.

Revenue Recognition—Network service revenues are billed and recognized monthly on a straight-line basis. Initial setup fees received in connection with network services are deferred and recognized over the estimated average period of the subscription for each service.

System integration revenue involves one or more of the following deliverables:

・	System construction services―include all or some of the following elements depending on arrangements to meet each of our customer's requirements: consulting, project planning, system design, and the development of network systems. These services also include the installation of software as well as configuration and installation of hardware.
・	Software―we resell third-party software such as Oracle and Windows to our customers, which are installed by us during the system development process.
・	Hardware―we also resell third-party hardware, primarily servers, switches and routers, which we install during the system development process. The hardware is generic hardware that is often sold by third-party manufacturers and resellers.
・	Monitoring and operating services―we monitor our customer's network activity and Internet connectivity to detect and report problems. We also provide constant data backup services.
・	Hardware and software maintenance services―we repair or replace any malfunctioning parts of hardware. We examine software faults and provide suitable solutions to customers.

The system construction services are generally delivered over a three-month period. All hardware and software are delivered and installed during this period. Customers are required to pay a specified fixed fee that is not payable until after the system construction has been completed and accepted by our customers.

Monitoring, operating, and hardware and software maintenance services generally commence once our customers have accepted the systems, and contract periods are generally from one to five years. Our contracts include a stated annual fee for these services.

For multiple-element arrangements that include system construction services, hardware, software essential to the hardware product’s functionality and undelivered non-software services (e.g., monitoring and operating services), the Company allocates revenue to all deliverables based on their relative selling prices. The Company uses a hierarchy to determine the selling price to be used for allocating revenue to the deliverables: (i) vendor-specific objective evidence of fair value (“VSOE”), (ii) third-party evidence of the selling price (“TPE”) and (iii) best estimate of the selling price (“ESP”). The allocation of revenue is based mainly on the Company’s ESPs except for certain undelivered non-software services for which VSOE has been established. The Company’s process for determining its ESP for deliverables includes various factors that may vary depending on the circumstances and specific characteristics related to each deliverable. In developing the ESP, the Company considers customer demand, the existence and effect of competitors, general profit margin realized in the marketplace, volume of the transactions, the Company’s internal costs of providing the deliverables, the profit objectives including targeted and historical margins realized on similar sales to similar customers and the historical pricing practices.

F-13

The method used to account for each unit and the period over which each unit of accounting is recognized are as follows:

・	Revenue allocated to system construction services is accounted for using contract accounting. System construction service revenues, which are generally completed within three months, are recognized based on the completed-contract method in compliance with ASC 605-35-25-92 because the Company is unable to bill customers and the title to the constructed network system is not transferred to the customers unless they are satisfied with and accept the completed systems.
・	Revenue related to the hardware and software essential to the hardware product’s functionality is not recognized until the customer acceptance is received because title to the hardware and software do not transfer to our customers until formal acceptance is received.
・	Revenue related to undelivered non-software services (monitoring, operating and hardware maintenance services) is recognized on a straight-line basis over the contract period.

The Company also enters into multiple-element arrangements for system integration services that include software not essential to the hardware product’s functionality and software-related services and accounts for them in accordance with ASC 985-605, “Software-Revenue Recognition.” The Company has been able to establish VSOE of fair value of the software-related services based on separate renewal contracts of the services that are consistently priced within a narrow range. The Company allocates revenue to such services based on VSOE and recognizes the revenues on a straight-line basis over the contract period. The Company allocates the residual amount to the software.

Equipment sales revenues are recognized when equipment is delivered and accepted by the customer.

The Company evaluates whether it is appropriate to record the gross amount of revenues and related costs or the net amount earned in reporting system construction services and equipment sales, depending on whether the Company functions as the principal or agent.

The ATM operation business revenues consist primarily of commissions for each withdrawing transaction with the use of ATMs. The ATM commission collected from each withdrawal is aggregated every month and recognized as ATM operation revenues.

Revenue is recognized net of consumption tax collected from customers and subsequently remitted to governmental authorities.

Cash and Cash Equivalents—Cash and cash equivalents includes time deposits with original maturities of three months or less.

Allowance for Doubtful Accounts—An allowance for doubtful accounts is established in amounts considered to be appropriate based primarily upon the Company's past credit loss experience and an evaluation of potential losses in the receivables outstanding.

Other Investments—The Company classifies its marketable equity and debt securities as available-for-sale securities, which are accounted for at fair value with unrealized gains and losses excluded from earnings and reported in accumulated other comprehensive income (loss). The cost of securities sold is determined based on average cost.

The Company reviews the fair value of available-for-sale securities on a regular basis to determine if the fair value of any individual security has declined below its cost and if such decline is other-than-temporary. If the decline in value is judged to be other-than-temporary, the cost basis of the investment is written down to fair value. Other-than-temporary declines in value are determined taking into consideration the extent of decline in fair value, the length of time that the decline in fair value below cost has existed, the financial condition and near-term prospects of the issuer, and the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value and events that might accelerate the recognition of impairment. For debt securities for which the declines are deemed to be other-than-temporary and there is no intent to sell and it is not more likely than not that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments are separated into the amount related to credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income (loss). For debt securities for which the declines are deemed to be other-than-temporary and there is an intent to sell or it is more likely than not that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments in their entirety are recognized in earnings. For equity securities for which the declines are deemed to be other-than-temporary, the resulting realized loss is recognized in earnings in the period in which the decline is deemed to be other-than-temporary.

F-14

Non-marketable equity securities are carried at cost as fair value is not readily determinable. When the Company evaluates whether non-marketable equity securities are impaired or not, the Company evaluates first whether an event or change in circumstances has occurred in the period that may have significant adverse effect on the fair value of the securities (an impairment indicator). The Company uses such impairment indicators as follows:

・	A significant deterioration in the earnings performance or business prospects of the investee.
・	A significant adverse change in the regulatory, economic, or technological environment of the investee.
・	A significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates.
・	A recent example of the new issuance of a security, in which the issue price is less than our cost.

The Company estimates the fair value of the non-marketable equity securities when an impairment indicator is present. The fair value is determined as a result of considering various unobservable inputs which are available to the Company, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in assets and liabilities held by the investees. The Company recognizes impairment of non-marketable equity securities when the fair value is below the carrying amount and the decline in fair value is considered to be other-than-temporary.

Inventories—Inventories consist mainly of network equipment purchased for resale and work-in-process for construction of network systems. Network equipment purchased for resale is stated at the lower of cost, which is determined by the average-cost method, or net realizable value. Work-in-process for development of network systems is stated at the lower of actual production costs, including overhead cost, or net realizable value. Inventories are reviewed periodically and items considered to be slow-moving or obsolete are written down to their estimated net realizable value. 

Leases—Capital leases are capitalized at the inception of the lease at the present value of the minimum lease payments during the lease term. All other leases are accounted for as operating leases. Lease payments for capital leases are apportioned to interest expense and a reduction of the lease liability to achieve a constant rate of interest on the remaining balance of the liability. Operating lease payments are recognized as expense on a straight-line basis over the lease term.

Sales-Type Leases—The Company has some sales-type lease agreements with customers. The Company recognizes revenues on sales-type leases when the assets under lease are delivered to and accepted by the customers. The revenue recognized is calculated at the net present value of the future receipt amounts. Interest income in sales-type leases is recognized in other income using the interest method.

Property and Equipment—Property and equipment are recorded at cost. Depreciation and amortization of property and equipment, including capitalized software and capital leases, are computed principally using the straight-line method based on either the estimated useful lives of the assets or the lease period, whichever is shorter.

The useful lives for depreciation and amortization by major asset classes are as follows:

	Range of Useful Lives (in years)
Data communications, office and other equipment	2	to	20
Buildings		20
Leasehold improvements	4	to	20
Capitalized software	5	to	7
Capital leases	4	to	6

Impairment of Long-Lived Assets—Long-lived assets consist principally of property and equipment, including those items leased under capital leases and amortized intangible assets. The Company evaluates the impairment of long-lived assets whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. Long-lived assets to be held and used are reviewed for impairment by comparing the carrying amount of the asset or asset group with their estimated undiscounted future cash flows. If the cash flows are determined to be less than the carrying amount of the asset or asset group, an impairment loss has occurred and the loss would be recognized during the period for the difference between the carrying amount of the asset or asset group and estimated fair value.

F-15

Goodwill and Intangible Assets—Goodwill and intangible assets that are deemed to have indefinite useful lives are not amortized, but are subject to impairment testing. Impairment testing is performed annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company performs annual impairment tests on March 31. If the carrying amount of a reporting unit exceeds its fair value, the Company then performs the second step of the goodwill impairment test to measure the amount of impairment loss, if any. Intangible assets with finite useful lives, consisting of customer relationships, are amortized using a non-straight-line basis based on the pattern of expected future economic benefit over the estimated useful lives, which range from 10 to 19 years.

Asset Retirement Obligations—The Company records the fair value of a liability for an asset retirement obligation in the period in which it is incurred. When the liability is initially recorded, the Company capitalizes the related cost by increasing the carrying amount of long-lived asset. Over time, the liability is accreted to its present value each period, and the capitalized cost is depreciated for the period the Company has estimated.

Pension and Severance Indemnities Plans—The Company has defined benefit pension plans and severance indemnities plans. The cost of the pension plans and severance indemnities plans are accrued based on amounts determined using actuarial methods. In addition, the Company has defined contribution pension plans. The costs of defined contribution pension plans are charged to expenses when incurred.

Income Taxes—Income tax expense is based on reported earnings before income taxes. Deferred income taxes reflect the impact of temporary differences between assets and liabilities recognized for financial reporting purposes and such amounts recognized for tax purposes and tax loss carryforwards. These deferred taxes are measured using the currently enacted tax rates in effect for the year in which the temporary differences or tax loss carryforwards are expected to reverse. Valuation allowances are provided against deferred tax assets when it is more likely than not that a tax benefit will not be realized.

The Company recognizes the financial statement effect of uncertain tax positions when it is not, based on the technical merits, that the tax positions will be sustained upon examination by the tax authorities. Benefits from tax positions that meet the more-likely-than-not recognition threshold are measured at the largest amount of benefit that is greater than 50% likely of being realized upon settlement. Interest and penalties accrued related to unrecognized tax benefits are included in income tax expense in the consolidated statements of income.

Foreign Currency Translation—The assets and liabilities of a foreign subsidiary and an equity method investee are translated into Japanese yen at the respective year-end exchange rates. All income and expense accounts are translated at average rates of exchange. The resulting translation adjustments are included in accumulated other comprehensive income (loss).

Foreign currency assets and liabilities are stated at the amount as computed by using year-end exchange rates and the resulting transaction gain or loss is recognized in earnings.

Stock-Based Compensation—The Company measures and records the compensation cost from stock compensation-type stock options based on fair value. The fair value of the stock option is measured on the date of grant using the Black-Scholes option-pricing model, and amortized over the requisite service period. The compensation cost is mainly included in “General and administrative” expenses.

Research and Development Costs—Research and development costs are expensed as incurred.

Advertising—Advertising costs are expensed as incurred and are recorded in “Sales and marketing.”

Basic and Diluted Net Income Attributable to Internet Initiative Japan Inc. per Common Share—Basic net income attributable to Internet Initiative Japan Inc. per common share is computed by dividing net income attributable to Internet Initiative Japan Inc. by the weighted-average number of shares of common stock outstanding during the year. Diluted net income attributable to Internet Initiative Japan Inc. per common share reflects the potential dilutive effect of stock options.

F-16

Other Comprehensive Income (Loss)—Other comprehensive income (loss) consists of translation adjustments resulting from the translation of financial statements of a foreign subsidiary, unrealized gains or losses on available-for-sale securities and defined benefit pension plan adjustments.

Segment Reporting—ASC 280, “Segment Reporting”, establishes standards for reporting information about operating segments. Operating segments are defined as components of an enterprise that engage in business activities from which it may earn revenues and incur expense and for which separate financial information is available that is evaluated regularly by the chief operation decision-maker in deciding how to allocate resources and in assessing performance.

The Company provides a comprehensive range of network solutions to meet its customers’ needs by cross-selling a variety of services, including Internet connectivity services, WAN services, outsourcing services, systems integration and sales of network-related equipment, and ATM operation services. The Company’s chief operating decision-maker, who is the Company’s Chief Operating Officer ("COO"), regularly reviews the revenue and cost of sales of the Company’s two operating segments the Network service and systems integration business segment and the ATM operation business segment. The COO also makes decisions regarding how to allocate resources and assess performance based on these segments.

New Accounting Guidance

In July 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory,” which applies to inventory that is measured using the first-in, first-out method (“FIFO”) or average cost methods. Under the updated guidance, an entity should measure inventory within the scope of the guidance at the lower of cost or net realizable value, which is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using the last-in, first-out method (“LIFO”). This ASU is effective for annual and interim periods beginning after December 15, 2016 and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Company adopted this ASU in the first quarter beginning April 1, 2017. The adoption of this ASU did not have a material impact on the Company’s financial position or results of operations.

In November 2015, the FASB issued ASU 2015-17, “Balance Sheet Classification of Deferred Taxes (Topic 740)” which changes how deferred taxes are classified on our balance sheets. This ASU requires all deferred tax assets and liabilities to be classified as non-current. This ASU is effective for annual and interim periods beginning after December 15. 2016, with early adoption permitted. The Company adopted this ASU in the first quarter beginning April 1, 2017 with prospective application. Prior periods were not retrospectively adjusted. Current deferred tax assets and liabilities included in the consolidated balance sheets as of March 31, 2017 are ¥1,298,469 thousand and ¥108,994 thousand, respectively.

Accounting Guidance Issued But Not Adopted as of March 31, 2018

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. This guidance also requires an entity to improve disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

ASU 2015-14, “Revenue from Contracts with Customers: Deferral of the Effective Date,” which was issued in August 2015, revised the effective date for ASU 2014-09 to annual and interim periods beginning after December 15, 2017, with early adoption permitted, but not earlier than the original effective date of annual and interim periods beginning after December 15, 2016, for public entities.

In March 2016, the FASB issued ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)," which is an amendment to ASU 2014-09 on assessing whether an entity is a principal or an agent in a revenue transaction. This amendment addresses implementation issues that were discussed by the Revenue Recognition Transition Resource Group ("TRG") to clarify the principal versus agent assessment and provide for a more consistent application. This new standard has the same effective date and transition requirements as ASU 2014-09.

The guidance permits two methods of adoption. The Company currently plans to adopt the standard using the “modified retrospective method.” Under that method, the Company will apply the rules to all contracts existing as of April 1, 2018, recognizing in beginning retained earnings an adjustment for the cumulative effect of the change and providing additional disclosures comparing results to previous accounting standards.

The Company expects revenue recognition for its broad portfolio of hardware, software and services to remain largely unchanged. However, the guidance is expected to change the allocation of contract revenues between various services and equipment and the timing of revenue recognition for certain nonrefundable upfront fees.

F-17

Although the Company expenses sales commissions as incurred, the requirements in the new standard to capitalize certain in-scope sales commissions will not result in a significant change to the Company’s results. However, the requirement to defer such incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of a deferred charge on the Company’s balance sheets.

The Company is in the process of finalizing the assessment of the impact of adopting this guidance and expects that the adoption will not have a material impact on the Company’s results of operations and financial position.

In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities," which amends the guidance in U.S. GAAP on the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, the ASU clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The new standard is effective for fiscal years and interim periods beginning after December 15, 2017, and upon adoption, an entity should apply the amendments by means of a cumulative effect adjustment to the balance sheet at the beginning of the first reporting period in which the guidance is effective. Early adoption is not permitted, except for the provision to record fair value changes for financial liabilities under the fair value option resulting from instrument-specific credit risk in other comprehensive income. The Company anticipates that the adoption of this guidance will increase the volatility of the Company’s other income (expenses), resulting from the remeasurement of the Company’s equity securities.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognizes assets and liabilities for leases with lease terms of more than twelve months and the recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases.

Lessor accounting remains largely unchanged from current U.S. GAAP, but does contain some targeted improvements to align with ASU 2014-09. ASU 2016-02 is effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018, using a modified retrospective approach, and early adoption is permitted. The Company is currently evaluating the impact of adopting this guidance.

In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," which addresses the diversity of practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows with respect to eight specific cash flow issues. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The Company is currently evaluating the impact of adopting this guidance.

F-18

2. BUSINESS COMBINATION AND TRANSFER

There were no business acquisitions during the years ended March 31, 2016, March 31, 2017 and March 31, 2018.

On December 31, 2017, the Company sold all of the shares of hi-ho, which provided Internet connectivity services for consumers, to a third party. Hi-ho was included in the network service and systems integration business segment. The Company recognized a gain on the sale of ¥44,877 thousand, in addition, goodwill and trademark decreased by ¥87,137 thousand and ¥15,000 thousand, respectively, for the year ended March 31, 2018. The gain on the sale was recorded in “General and administrative” expenses in the Company's consolidated statements of income.

3. INVENTORIES

The components of inventories as of March 31, 2017 and 2018 are as follows:

	Thousands of Yen
	2017		2018
Network equipment purchased for resale	¥	1,093,001	¥	1,053,574
Work in process		1,705,053		660,973
Total inventories	¥	2,798,054	¥	1,714,547

F-19

4. OTHER INVESTMENTS

Pursuant to ASC 320, “Investments―Debt and Equity Securities,” all of the Company's marketable equity and debt securities are classified as available-for-sale securities. Information regarding the securities classified as available-for-sale at March 31, 2017 and 2018 is as follows:

	Thousands of Yen
March 31, 2017	Cost		Unrealized Gains		Unrealized Losses		Fair Value
Available-for-sale—Equity securities	¥	1,789,471	¥	3,880,414	¥	375	¥	5,669,510
Available-for-sale—Debt securities		100,300		10,530		-		110,830
	¥	1,889,771	¥	3,890,944	¥	375	¥	5,780,340
March 31, 2018
Available-for-sale—Equity securities	¥	1,651,181	¥	7,525,556	¥	699	¥	9,176,038
Available-for-sale—Debt securities		100,300		11,870		-		112,170
	¥	1,751,481	¥	7,537,426	¥	699	¥	9,288,208

Maturities of available-for-sale debt securities are due after 10 years.

The following table provides the fair value and gross unrealized losses of the Company's investments, which have been deemed to be temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of March 31, 2017 and 2018:

	Thousands of Yen
	Less than 12 Months				12 Months or More				Total
March 31, 2017	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Available-for-sale—Equity securities	¥	816	¥	5	¥	3,398	¥	370	¥	4,214	¥	375
March 31, 2018
Available-for-sale—Equity securities	¥	17,519	¥	699		-		-	¥	17,519	¥	699

The Company regularly reviews all of the Company's investments to determine if any are other-than-temporarily impaired. The analysis includes reviewing industry analyst reports, sector credit ratings and volatility of the security's market price.

The Company’s unrealized loss on investments in marketable equity securities as of March 31, 2018 relates to Japanese companies (3 issuers) in the financial, heavy and shipping industries. The fair value of each investment is between 2.8% and 8.6% less than its cost. The duration of the unrealized loss position was less than 2 months. The Company evaluated the near-term prospects of the issuers and the analyst reports in relation to the severity and duration of impairment. Based on that evaluation and the Company’s ability and intent to hold the investments for a reasonable period of time sufficient to recover the unrealized loss, the Company does not consider the investments to be other-than-temporarily impaired at March 31, 2018.

Proceeds from the sale of available-for-sale securities were ¥141,235 thousand and ¥4,840 thousand and ¥1,206,516 thousand for the years ended March 31, 2016, 2017 and 2018, respectively. Gross realized gains of ¥2,708 thousand and ¥1,068,303 thousand were included in "Other income (expenses)" for the years ended March 31, 2017 and 2018, respectively.

F-20

The aggregate cost of the Company’s cost method investments totaled ¥2,144,574 thousand and ¥2,086,234 thousand at March 31, 2017 and 2018, respectively.

Impairment of investments in certain marketable equity securities and nonmarketable equity securities, including funds, included in "Other income (expenses)" in the Company’s consolidated statements of income, were recognized to reflect the decline in value considered to be other-than-temporary. The Company recognized impairment loss ¥30,554 thousand on marketable equity securities for the year ended March 31, 2017, and ¥109,840 thousand on nonmarketable equity securities for the year ended March 31, 2018.

5. ALLOWANCE FOR DOUBTFUL ACCOUNTS AND LOANS

The analysis of the allowance for doubtful accounts and loans for the years ended March 31, 2016, 2017 and 2018 is as follows:

	Thousands of Yen
	Balance at Beginning of Year		Credits Charged Off			Provision for Doubtful Accounts		Other			Balance at End of Year
Year ended March 31, 2016	¥	148,245	¥	(45,108	)	¥	48,407	¥	(29	)	¥	151,515
Year ended March 31, 2017	¥	151,515	¥	(34,978	)	¥	68,300	¥	(84	)	¥	184,753
Year ended March 31, 2018	¥	184,753	¥	(94,521	)	¥	94,839	¥	31		¥	185,102

F-21

6. INVESTMENTS IN EQUITY METHOD INVESTEES

IIJ utilizes various companies in Japan to develop and operate its Internet business. Businesses operated by its equity method investees include multifeed technology services and location facilities for connecting high-speed Internet backbones (Internet Multifeed Co., “Multifeed”), comprehensive portal site operations (Internet Revolution Inc., “i-revo”), point management systems operations (Trinity Inc., “Trinity”), cloud-based systems that undergird smartphone applications (Appiaries Corporation, “Appiaries”), cloud computing services in Indonesia (PT. BIZNET GIO NUSANTARA, “BIZNET”), system development and consulting in medical and healthcare business (KIS Inc., “KIS”), cloud computing services in Thailand (Leap Solutions Asia Co., Ltd., “Leap Solutions”), content delivery network services (JOCDN Inc., “JOCDN” ) and financial services for cryptocurrencies exchange and settlement (DeCurret Inc., “DeCurret” ).

The aggregate amounts of balances and transactions of the Company with these equity method investees as of March 31, 2017 and 2018, and for each of the three years in the period ended March 31, 2018 are summarized as follows:

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	150,755	¥	183,023
Accounts payable		-		50,733		98,306
Revenues	¥	666,554		683,332		863,818
Costs and expenses		502,340		527,431		1,107,344

Dividends from the equity method investees for the years ended March 31, 2016, 2017 and 2018 were ¥48,510 thousand, ¥51,083 thousand and ¥51,191 thousand, respectively.

The Company's investments in these equity method investees and its ownership percentage in each at March 31, 2017 and 2018 consisted of the following:

	Thousands of Yen
	2017					2018
Multifeed		34.00	%	¥	1,642,171		34.00	%	¥	1,806,472
i-revo		30.00			751,784		30.00			767,197
Trinity		33.75			183,403		33.75			227,470
Appiaries		49.00			16,409		-			-
BIZNET		40.00			182,514		40.00			249,840
KIS		39.30			55,627		39.30			59,467
Leap Solutions		40.00			227,430		40.00			201,448
JOCDN		50.00			90,837		20.00			132,270
DeCurret		-			-		35.00			1,802,149
Total				¥	3,150,175				¥	5,246,313

The Company sold all of its shares in Appiaries for ¥1,615 thousand in December 2017 and acquired shares in DeCurret for ¥1,830,000 thousand in February 2018.

The balance of equity method goodwill was ¥7,197 thousand as of March 31, 2017 and 2018, and was included in “Investments in equity method investees” in the Company’s consolidated balance sheets.

F-22

7. PROPERTY AND EQUIPMENT

Property and equipment as of March 31, 2017 and 2018 consisted of the following:

	Thousands of Yen
	2017			2018
Data communications equipment	¥	15,013,565		¥	18,544,180
Office and other equipment		2,875,548			2,522,740
Land		537,889			2,038,726
Buildings		1,663,326			2,151,069
Leasehold improvements		4,061,909			4,182,013
Capitalized software		33,335,560			36,624,979
Assets under capital leases, primarily data communications equipment		32,854,630			35,821,498
Total		90,342,427			101,885,205
Less accumulated depreciation and amortization		(50,566,983	)		(55,470,955	)
Property and equipment—net	¥	39,775,444		¥	46,414,250

Depreciation and amortization expenses for property and equipment amounted to ¥9,533,541 thousand, ¥10,513,162 thousand and ¥11,999,414 thousand for the years ended March 31, 2016, 2017 and 2018, respectively.

The Company recorded net losses on sales or disposal of property and equipment of ¥27,950 thousand, ¥139,162 thousand and ¥99,953 thousand for the years ended March 31, 2016, 2017 and 2018, respectively, in “General and administrative” expenses in the Company’s consolidated statements of income.

The accumulated amortization for capitalized software was ¥20,882,937 thousand and ¥22,072,049 thousand as of March 31, 2017 and 2018, respectively. The amortization expenses for capitalized software amounted to ¥2,894,740 thousand and ¥3,348,188 thousand for the years ended March 31, 2017 and 2018, respectively. The weighted-average amortization period for capitalized software is approximately 6.0 years. The estimated aggregate amortization expense of capitalized software for each of the next five years is as follows:

Year Ending March 31	Thousands of Yen
2019	¥	3,689,048
2020		3,323,134
2021		2,744,928
2022		2,246,229
2023		1,275,916

F-23

8. GOODWILL AND OTHER INTANGIBLE ASSETS

The components of intangible assets as of March 31, 2017 and 2018 are as follows:

	Thousands of Yen
	2017			2018
Intangible assets subject to amortization:
Customer relationships	¥	6,424,471		¥	6,175,193
Total		6,424,471			6,175,193
Less accumulated amortization
Customer relationships		(3,388,053	)		(3,504,234	)
Total		(3,388,053	)		(3,504,234	)
Intangible assets subject to amortization—net		3,036,418			2,670,959
Intangible assets not subject to amortization:
Telephone rights		35,599			33,709
Trademark		15,000			-
Goodwill		6,169,609			6,082,472
Total		6,220,208			6,116,181
Total intangible assets	¥	9,256,626		¥	8,787,140

The amortization expenses for the years ended March 31, 2017 and 2018 were ¥380,495 thousand and ¥365,459 thousand, respectively. The estimated aggregate amortization expense of intangible assets for each of the next five years is as follows:

Year Ending March 31	Thousands of Yen
2019	¥	355,410
2020		346,223
2021		336,787
2022		327,101
2023		318,665

The Company recorded ¥81,000 thousand of loss on impairment of the trademark related to hi-ho in “General and administrative” expenses in the Company’s consolidated statement of income for the year ended March 31, 2017. Because of the recent decrease in revenues of hi-ho, the Company recognized that the trademark might be impaired. The carrying value of the trademark exceeded its fair value and the impairment loss was recognized in an amount equal to the excess of the carrying amount of the trademark over the fair value of the trademark. The fair value of the trademark was calculated using the relief-from-royalty method. The amount of loss was included in the network service and system integration business segment.

The decreases of the customer relationships, trademark and goodwill for the year ended March 31, 2018 were related to the sale of subsidiary shares of hi-ho. Refer to Note 2, “BUSINESS COMBINATION AND TRANSFER”.

F-24

The following table shows changes in the carrying amount of goodwill for the years ended March 31, 2017 and 2018, by operating segment:

	Thousands of Yen
	Network Service and Systems Integration Business			ATM Operation Business		Total
Balance at March 31, 2016
Goodwill	¥	6,054,340		¥	235,551	¥	6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Balance at March 31, 2017
Goodwill		6,054,340			235,551		6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Sale		(87,137	)		-		(87,137	)
Balance at March 31, 2018
Goodwill		5,967,203			235,551		6,202,754
Accumulated impairment losses		(120,282	)		-		(120,282	)
	¥	5,846,921		¥	235,551	¥	6,082,472

No impairment of goodwill was recognized during the years ended March 31, 2016, 2017 and 2018.

F-25

9. LEASES

The Company enters into, in the normal course of business, various leases for domestic and international backbone services, office premises, network operation centers and data communications and other equipment. Certain leases that meet one or more of the criteria set forth in the provision of ASC 840, “Leases”, have been classified as capital leases and the others have been classified as operating leases.

A portion of the Company’s sales result from multi-year lease agreements under which the Company leased some network equipment to customers. The leases are classified as sale-type leases which the Company accounts for in accordance with ASC 840.

Operating Leases—The Company has operating lease agreements with telecommunications carriers and others for the use of connectivity lines, including local access lines that customers use to connect to IIJ's network. The leases for domestic and international backbone connectivity are generally non-cancelable for a minimum one-year lease period. The Company also leases its office premises, for which refundable lease deposits are capitalized as guarantee deposits, certain office equipment under non-cancelable operating leases, and its network operation centers under non-cancelable operating leases which expire on various dates through 2023.

Refundable guarantee deposits as of March 31, 2017 and 2018 consist of the following:

	Thousands of Yen
	2017		2018
Head office	¥	2,462,266	¥	2,745,034
Sales and subsidiaries offices		518,759		597,798
Others		79,340		79,611
Total refundable guarantee deposits	¥	3,060,365	¥	3,422,443

Lease expenses related to backbone lines for the years ended March 31, 2016, 2017 and 2018 amounted to ¥3,638,063 thousand, ¥3,421,807 thousand and ¥3,318,831 thousand, respectively. Lease expenses for local access lines for the years ended March 31, 2016, 2017 and 2018, which are mainly attributable to Internet connectivity services and WAN services, amounted to ¥23,035,615 thousand, ¥24,759,611 thousand and ¥27,604,950 thousand, respectively. Other lease expenses for the years ended March 31, 2016, 2017 and 2018 amounted to ¥6,880,307 thousand, ¥7,082,157 thousand and ¥7,613,522 thousand, respectively.

The Company has subleased a part of its office premises. Lease expenses mentioned above have been reduced by sublease revenues totaling ¥41,002 thousand, ¥52,928 thousand and ¥54,385 thousand for the years ended March 31, 2016, 2017 and 2018, respectively.

Capital Leases—The Company conducts its connectivity and other services by using data communications and other equipment leased under capital lease arrangements.

The Company sold ATM and data communications equipment procured from third-party vendors, which amounted to ¥3,635,690 thousand and ¥3,197,334 thousand, to the leasing companies for the years ended March 31, 2017 and 2018, respectively, and concurrently entered into capital lease arrangements to lease the equipment back, which resulted in total lease payments of ¥3,554,784 thousand due by March 2022 and ¥3,118,075 thousand due by March 2023, related to the lease contracts made in the years ended March 31, 2017 and 2018, respectively.

The fair values of the assets upon execution of the capital lease arrangements and accumulated depreciation amounted to ¥32,854,630 thousand and ¥19,735,367 thousand, respectively, at March 31, 2017 and ¥35,821,498 thousand and ¥21,251,673 thousand, respectively, at March 31, 2018.

F-26

Lessee Future Minimum Lease Payments—As of March 31, 2018, the future lease payments under non-cancelable operating leases, including the aforementioned non-cancelable connectivity lease agreements and capital leases were as follows:

	Thousands of Yen
	Connectivity Lines Operating Leases		Other Operating Leases		Capital Leases
Year ending March 31:
2019	¥	585,818	¥	3,466,849	¥	5,884,743
2020		240,242		1,328,020		4,887,319
2021		22,510		361,100		3,743,032
2022		-		195,812		2,035,721
2023		-		169,144		504,935
2024 and thereafter		-		120,642		-
Total minimum lease payments	¥	848,570	¥	5,641,567		17,055,750
Less amounts representing interest						(479,149	)
Present value of net minimum capital lease payments						16,576,601
Less current portion						(5,655,875	)
Noncurrent portion					¥	10,920,726

Sales-Type Leases—The components of the net investment in sales-type leases as of March 31, 2017 and 2018 were as follows:

	Thousands of Yen
	2017			2018
Year ending March 31:
2019				¥	818,208
2020					552,597
2021					503,456
2022					468,715
2023					45,767
Total minimum lease payments to be received*	¥	2,939,252		¥	2,388,743
Estimated residual value of leased property (unguaranteed)		-			-
Less unearned income		(66,934	)		(46,152	)
Net investment in sales-type leases		2,872,318			2,342,591
Less current portion		(824,636	)		(797,298	)
Non-current net investment in sales-type leases	¥	2,047,682		¥	1,545,293

*Estimated executory costs, including profit thereon, of ¥645,166 thousand and ¥1,515,645 thousand were excluded from the total minimum lease payments to be received as of March 31, 2017 and 2018, respectively.

F-27

10. ASSET RETIREMENT OBLIGATIONS

The asset retirement obligations are principally related to leasehold office premises and a data center which, at the end of the lease, the Company is contractually obligated to restore.

The movements in asset retirement obligations for the years ended March 31, 2017 and 2018 were as follows:

	Thousands of Yen
	2017		2018
Balance at beginning of the year	¥	595,183	¥	639,494
Liabilities incurred		31,980		49,609
Liabilities settled		-		(7,608	)
Accretion expense		12,331		12,714
Balance at end of the year	¥	639,494	¥	694,209

11. BORROWINGS

Short-term borrowings at March 31, 2017 and 2018 consisted of bank overdrafts that bear fixed rate interest. The weighted-average rates at March 31, 2017 and 2018 were 0.400% and 0.411%, respectively.

Long-term borrowings as of March 31, 2017 and 2018 consist of the following:

	Thousands of Yen
	2017		2018
Long-term installment payable at various dates through calendar 2024; interest payable at fixed rates; the weighted-average rates were 0.438% and 0.488% at March 31, 2017 and 2018, respectively.	¥	8,500,000	¥	15,500,000
Less current portion		-		-
Long-term borrowings, less current portion	¥	8,500,000	¥	15,500,000

Annual maturities of long-term borrowing for the years subsequent to March 31, 2018 are as follows:

	Thousands of Yen
Year ending March 31:
2020	¥	1,500,000
2021		1,830,000
2022		5,170,000
2023		1,500,000
2024		2,000,000
2025		3,500,000
Total	¥	15,500,000

Substantially all short-term and long-term bank borrowings are made under agreements which, as is customary in Japan, provide that under certain conditions the bank may require the borrower to provide collateral (or additional collateral) or a guarantor with respect to the borrowings and that the bank may treat any collateral, whether furnished as security for short-term or long-term loans or otherwise, as collateral for all indebtedness to such bank. Also, provisions of certain loan agreements grant certain rights of possession to the lenders in the event of default. The Company did not provide banks with any collateral for outstanding loans as of March 31, 2018.

F-28

The Company entered into bank overdraft agreements with certain Japanese banks for which the unused balance outstanding as of March 31, 2018 was ¥10,450,000 thousand.

A long-term account payable relating to a purchase of a software license is included in “OTHER NONCURRENT LIABILITIES” for ¥1,468,183 thousand and ¥896,810 thousand as of March 31, 2017 and March 31, 2018, respectively, and the repayment is based on the usage of the license. The payable bears interest at the fixed rate of 0.5% per annum. All of the outstanding balance will become due by December 31, 2019.

12. INCOME TAXES

Income taxes imposed by the national, prefectural and municipal governments of Japan resulted in a normal statutory rate of approximately 33.5% for the year ended March 31, 2016 and 31.7% for the years ended March 31, 2017 and 2018.

Income from operations before income tax expense and equity in net income of equity method investees and income tax expense for the years ended March 31, 2016, 2017 and 2018 consist of the following components:

	Thousands of Yen
	2016			2017			2018
Income from operations before income tax expense and equity in net income of equity method investees:
Domestic	¥	6,460,898		¥	5,503,750		¥	7,732,535
Foreign		(267,564	)		(76,590	)		107,588
Total	¥	6,193,334		¥	5,427,160		¥	7,840,123
Income taxes―current:
Domestic	¥	1,929,139		¥	2,307,523		¥	2,986,077
Foreign		5,277			11,700			22,695
Total	¥	1,934,416		¥	2,319,223		¥	3,008,772
Income taxes―deferred:
Domestic	¥	255,992		¥	(95,638	)	¥	(301,900	)
Foreign		(6,877	)		1,295			(11,033	)
Total	¥	249,115		¥	(94,343	)	¥	(312,933	)

IIJ and domestic subsidiaries adopted the consolidated tax declaration since the fiscal year ended March 31, 2009.

On March 31, 2016, new amendments to Japanese tax regulations were enacted into law. As a result, the normal Japanese statutory rate was reduced to 31.7% from the fiscal year beginning April 1, 2016, 31.1% from the fiscal year beginning April 1, 2017 and 30.9% from the fiscal year beginning April 1, 2018. On June 15, 2016, amendments to Japanese local tax regulations were enacted into law. As a result, the normal Japanese statutory rate was increased to 31.7% from the fiscal year beginning April 1, 2017 and reduced to 31.5% from the fiscal year beginning April 1, 2018. The effect of the changes in the tax rates on the balance of deferred tax assets and liabilities was an increase in income tax expense of ¥23,183 thousand and ¥7,954 thousand for the years ended March 31, 2016 and 2017, respectively.

On December 22, 2017, the Tax Cuts and Jobs Act of 2017 was enacted in the United States of America. As a result, the federal corporate income tax rate was reduced from 35% to 21% from the fiscal year beginning January 1, 2018. The effect of the change in the tax rate on the balance of deferred tax assets and liabilities was a decrease in income tax expense of ¥26,485 thousand for the years ended March 31, 2018.

F-29

The approximate effect of temporary differences and carryforwards giving rise to deferred tax balances at March 31, 2017 and 2018 was as follows:

	Thousands of Yen
	2017					2018
	Deferred Tax Assets			Deferred Tax Liabilities		Deferred Tax Assets			Deferred Tax Liabilities
Unrealized gains on available-for-sale securities		-		¥	1,222,283		-		¥	2,370,327
Capital leases	¥	158,928			-	¥	181,494			-
Accrued expenses		877,107			-		902,787			-
Retirement and pension cost		1,107,885			-		1,168,895			-
Allowance for doubtful accounts		68,530			-		69,004			-
Depreciation		299,956			-		458,099			-
Net loss on other investments		172,942			-		162,991			-
Net operating loss carryforwards		636,012			-		459,402			-
Transactions in transit*		-			98,308		-			60,451
Impairment loss on telephone rights		68,405			-		68,632			-
Accrued enterprise tax		139,050			-		189,460			-
Asset retirement obligation		201,441			-		218,675			-
Deferred revenue		363,765			-		302,654			-
Customer relationships		-			957,202		-			841,351
Tax deduction of goodwill		-			805,738		-			760,281
Trademark		-			4,725		-			-
Investments in equity method investees		-			324,528		-			420,121
Investments in funds		89,732			-		95,336			-
Asset retirement cost		-			148,261		-			149,833
Other		336,429			93,374		400,543			147,477
Total		4,520,182			3,654,419		4,677,972			4,749,841
Valuation allowance		(559,567	)		-		(433,110	)		-
Total	¥	3,960,615		¥	3,654,419	¥	4,244,862		¥	4,749,841

*This item arises from transactions between IIJ and foreign subsidiaries, which were recorded in the different periods as a result of the difference in each company’s fiscal year-end.

As of March 31, 2017 and 2018, the valuation allowance for deferred tax assets related principally to operating loss carryforwards at amounts which are not considered more likely than not to be realized. The net changes in the valuation allowance for deferred tax assets were an increase of ¥15,696 thousand, a decrease of ¥68,126 thousand and a decrease of ¥126,457 thousand for the years ended March 31, 2016, 2017 and 2018, respectively.

Undistributed earnings of foreign subsidiaries that are deemed to be permanently invested amounted to ¥839,047 thousand as of March 31, 2018. It is not practicable to calculate the unrecognized deferred tax liability on such undistributed earnings.

F-30

As of March 31, 2018, certain subsidiaries not subject to consolidation tax filing had tax operating loss carryforwards, which were composed of ¥706,943 thousand in the United States of America and ¥1,180,169 thousand in other countries. These net operating loss carryforwards are available to offset against future taxable income. The net operating loss carryforwards in the United States of America will expire in the period ending from December 31, 2021 to 2037. With the exception of ¥251,000 thousand with no expiration period, the net operating loss carryforwards in other countries will expire in the period ending from December 31, 2018 to 2022.

A reconciliation between the amount of reported income taxes and the amount of income taxes computed using the normal statutory rate for each of the three years in the period ended March 31, 2018 is as follows:

	Thousands of Yen
	2016			2017			2018
Amount computed by using normal Japanese statutory tax rate	¥	2,074,767		¥	1,720,410		¥	2,485,319
Increase (decrease) in taxes resulting from:
Expenses not deductible for tax purpose		93,262			88,633			98,905
Inhabitant tax—per capita		39,538			46,822			38,161
Change in valuation allowance		15,696			(68,126	)		(21,173	)
Tax effects on investments in equity method investees		48,368			34,549			40,218
Enterprise tax—not based on income		146,883			268,545			257,203
Tax rate change		23,183			7,954			(26,485	)
Tax credit		(269,145	)		5,000			(164,525	)
Other—net		10,979			121,093			(11,784	)
Income tax expense as reported	¥	2,183,531		¥	2,224,880		¥	2,695,839

There was no unrecognized tax benefit for the years ended March 31, 2017 and 2018. The Company does not reasonably expect that the unrecognized tax benefit will change significantly within the next twelve months.

The Company has open tax years subject to examination by major tax jurisdictions from the year ended March 31, 2017 in Japan and from the year ended December 31, 2006 in the United States of America.

Tax credit in the year ended March 31, 2017 included an adjustment of tax credit from the year ended March 31, 2016 amounting to ¥125,234 thousand.

F-31

13. RETIREMENT AND PENSION PLANS

IIJ and certain subsidiaries have unfunded severance benefits, noncontributory defined benefit pensions and defined contribution plans which together cover substantially all of their employees who are not directors. The defined benefit pension plan is operated under the Defined Benefit Corporate Pension Law.

The following information regarding net periodic pension cost and accrued pension cost also includes the unfunded severance benefit plans. Under the severance and defined benefit pension plans, all of IIJ and IIJ-Global’s employees are entitled, upon retirement with 20 years or more of service, to a 10-year period of annuity payments from age 60 (or lump-sum severance indemnities) based on the rate of pay at the time of retirement, length of service and certain other factors. IIJ and IIJ-Global's employees who do not meet these conditions are entitled to lump-sum severance indemnities. 

Net periodic pension cost for the years ended March 31, 2016, 2017 and 2018 included the following components:

	Thousands of Yen
	2016			2017			2018
Service cost	¥	648,944		¥	737,290		¥	769,172
Interest cost		67,525			43,988			59,946
Expected return on plan assets		(87,909	)		(92,623	)		(105,419	)
Amortization of transition obligation		365			-			-
Amortization of actuarial loss (gain)		(2,971	)		24,584			5,489
Net periodic pension cost	¥	625,954		¥	713,239		¥	729,188

Other changes in plan assets and benefit obligations recognized in other comprehensive income for the years ended March 31, 2016, 2017 and 2018 are as follows:

	Thousands of Yen
	2016			2017			2018
Net actuarial loss (gain)	¥	585,332		¥	(276,702	)	¥	(44,710	)
Amortization of transition obligation in net periodic pension cost		(365	)		-			-
Amortization of actuarial loss (gain)		2,971			(24,584	)		(5,489	)
Amounts recognized in other comprehensive income	¥	587,938		¥	(301,286	)	¥	(50,199	)
Total net periodic pension cost and amounts recognized in other comprehensive income	¥	1,213,892		¥	411,953		¥	678,989

F-32

The change in benefit obligation and plan assets for the years ended March 31, 2017 and 2018 and the amounts recognized in the consolidated balance sheets as of March 31, 2017 and 2018 are as follows:

	Thousands of Yen
	2017			2018
Change in benefit obligation:
Benefit obligation at beginning of year	¥	6,388,110		¥	6,777,223
Service cost		737,290			769,172
Interest cost		43,988			59,946
Actuarial gain		(263,016	)		(14,234	)
Benefit paid		(129,149	)		(146,715	)
Benefit obligation at end of year		6,777,223			7,445,392
Change in plan assets:
Fair value of plan assets at beginning of year		3,193,899			3,635,159
Actual return on plan assets		106,310			135,893
Employer contribution		404,795			432,459
Benefits paid		(69,845	)		(74,744	)
Fair value of plan assets at end of year		3,635,159			4,128,767
Funded status at end of year	¥	(3,142,064	)	¥	(3,316,625	)

Amounts recognized in the consolidated balance sheets as of March 31, 2017 and 2018 consist of:

	Thousands of Yen
	2017			2018
Accrued retirement and pension costs	¥	(3,142,064	)	¥	(3,316,625	)
Net amount recognized	¥	(3,142,064	)	¥	(3,316,625	)

The accumulated benefit obligation for the Company’s defined benefit pension plans as of March 31, 2017 and 2018 was ¥4,411,815 thousand and ¥4,979,785 thousand, respectively.

The aggregate projected benefit obligation and aggregate fair value of plan assets for plans with projected benefit obligations in excess of plan assets were ¥6,777,223 thousand and ¥3,635,159 thousand, respectively, at March 31, 2017 and ¥7,445,392 thousand and ¥4,128,767 thousand, respectively, at March 31, 2018, respectively. The aggregate accumulated benefit obligations of plans with no plan assets were ¥116,408 thousand and ¥131,049 thousand at March 31, 2017 and 2018, respectively.

Amounts recognized in accumulated other comprehensive income at March 31, 2017 and 2018 consist of:

	Thousands of Yen
	2017		2018
Net actuarial loss	¥	658,139	¥	607,939
Total	¥	658,139	¥	607,939

The estimated net actuarial loss for the defined benefit pension plans that will be amortized from accumulated other comprehensive income into net periodic pension cost in the fiscal year ending March 31, 2019 is ¥2,460 thousand.

F-33

Weighted-average actuarial assumptions as of March 31 were as follows:

	Benefit Obligations						Net Periodic Costs
	2017			2018			2016			2017			2018
Discount rate		0.9	%		0.8	%		1.3	%		0.7	%		0.9	%
Expected long-term rate of return on plan assets								3.0			2.9			2.9
Rate of increase in compensation		3.1			3.0			3.2			3.1			3.1

The Company sets the discount rate assumption annually at March 31 based on high-quality fixed income securities reflecting the estimated timing of benefit payments. 

The basis for determining the long-term rate of returns is a combination of historical returns and prospective return assumptions derived from pension trust funds’ managing company.

F-34

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid.

Years Ending March 31	Thousands of Yen
2019	¥	126,065
2020		144,733
2021		194,204
2022		270,389
2023		274,262
2024-2028		1,839,614
Total	¥	2,849,267

The Company expects to contribute ¥432,460 thousand to its defined benefit pension plan in the year ending March 31, 2019.

The Company’s defined contribution plan, which was established on April 1, 2009, covers substantially all its employees. The Company contributes 1.6% of its employees’ base salaries to the plan on a monthly basis. No employee contributions to the plan are allowed. Contributions to the plan were ¥138,372 thousand, ¥146,975 thousand and ¥154,681 thousand for the years ended March 31, 2016, 2017 and 2018, respectively.

The Company's funding policies with respect to the noncontributory plan are generally to contribute amounts considered tax deductible under applicable income tax regulations. Plan assets, including life insurance pooled investment portfolios, consist of Japanese and U.S. government bonds, other debt securities and marketable equity securities.

Life insurance pooled investment portfolios are managed by an insurance company and guarantee a minimum rate of return.

The Company’s investment strategy for the plan assets is to manage the assets in order to pay retirement benefits to plan participants from the Company over the life of the plans.

This is accomplished by identifying and managing the exposure to various market risks, and diversifying investments in various asset classes based on a portfolio determined by the insurance company in order to maximize long-term rate of return, while considering the liquidity needs of the plans.

The plan is permitted to use derivative instruments only for the purpose of hedging. Both margin trading and real estate investments are prohibited in principle.

The Company mitigates the credit risk of investments by establishing guidelines with the insurance company. These guidelines are monitored periodically by the Company for compliance.

The projected allocation of the plan assets managed by the insurance company is developed in consideration of the expected long-term investment returns for each category of the plan assets. Approximately 63.0%, 35.0%, and 2.0% of the plan assets excluding pooled investment portfolios will be allocated to debt securities, equity securities and other financial instruments, respectively, to moderate the level of volatility in pension plan asset returns and reduce risks. Half of the employer’s contribution to the plan during the year ending March 31, 2019 will be allocated to life insurance pooled investment portfolios and the other 50% will be allocated to the aforementioned investments.

F-35

The following table summarizes the basis used to measure the Company’s pension plan assets at fair value:

Level 1—	Inputs are quoted prices in active markets for identical assets or liabilities.
Level 2—	Inputs are quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
Level 3—	Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable, which reflect the Company’s own assumptions about the assumptions that market participants would use in establishing a price.

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2017	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	528,083		-		-	¥	528,083
U.S. equity		159,618		-		-		159,618
Other equity―developed countries		91,087		-		-		91,087
Total equity securities		778,788		-		-		778,788
Debt securities:
Japanese government and municipalities		-	¥	632,216		-		632,216
Japanese corporate bonds―investment grade		-		290,360		-		290,360
U.S. government		-		127,659		-		127,659
Other government―developed countries		-		173,598		-		173,598
Residential mortgage-backed		-		26,749		-		26,749
Total debt securities		-		1,250,582		-		1,250,582
Other financial instruments*		-		1,464,874		-		1,464,874
Cash		140,915		-		-		140,915
Total assets at fair value	¥	919,703	¥	2,715,456		-	¥	3,635,159

F-36

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2018	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	606,612		-		-	¥	606,612
U.S. equity		185,164		-		-		185,164
Other equity―developed countries		102,448		-		-		102,448
Total equity securities		894,224		-		-		894,224
Debt securities:
Japanese government and municipalities		-	¥	786,055		-	¥	786,055
Japanese corporate bonds―investment grade		-		287,216		-		287,216
U.S. government		-		150,444		-		150,444
Other government―developed countries		-		208,011		-		208,011
Residential mortgage-backed		-		34,192		-		34,192
Total debt securities		-		1,465,918		-		1,465,918
Other financial instruments*		-		1,678,236		-		1,678,236
Cash		90,389		-		-		90,389
Total assets at fair value	¥	984,613	¥	3,144,154		-	¥	4,128,767

* Other financial instruments are life insurance pooled investment portfolios.

Pension plan assets classified as Level 1 are comprised principally of equity securities, which are valued using an unadjusted quoted market price in active markets with sufficient volume and frequency of transactions.

Pension plan assets classified as Level 2 are comprised principally of government bonds, corporate bonds and life insurance pooled investment portfolios which are valued based on quoted prices obtained from reputable administrators. The bonds are traded in less active markets and the fair values are based on the price a dealer would pay for the bonds.

IIJ and one subsidiary also participate in a contributory multi-employer pension plan, the Japan Computer Information Service Employee's Pension Fund (the "Multi-Employer Plan"), which covers substantially all of their employees.

As stipulated by the Japanese Welfare Pension Insurance Law, the Multi-Employer Plan is composed of a substitutional portion of Japanese Pension Insurance and a multi-employers' portion of a contributory defined benefit pension plan. The benefits for the substitutional portion are based on a standard remuneration schedule under the Welfare Pension Insurance Law and the length of participation. The multi-employer portion of the benefits is based on the employee's length of service. However, assets contributed by an employer including IIJ are not segregated in a separate account or restricted to provide benefits only to employees of that employer. The net pension cost under the Multi-Employer Plan is recognized when contributions become due.

Contributions due and paid during the years ended March 31, 2016, 2017 and 2018 under the Multi-Employer Plan, including its substitutional portion, amounted to ¥123,674 thousand, ¥117,300 thousand and ¥124,442 thousand, respectively. The Company’s contribution did not represent more than 5% of total contributions to the plan during the years ended March 31, 2016, 2017 and 2018.

The plan is not subject to a funding improvement and was more than 80% funded as of March 31, 2017. The total plan assets were ¥238,628,525 thousand as of March 31, 2018. It was not practical to obtain additional information for the plan for the year ended March 31, 2018. The amount of retirement benefits for retiring directors and company auditors must be approved by the shareholders.

F-37

IIJ had a retirement benefit plan for full-time directors, which was abolished in June 2011. The allowance for retirement benefit amounted to ¥255,330 thousand in consideration of their services provided up to the date of abolition of the plan, and this amount will be reserved until each director’s retirement date. IIJ’s subsidiary also has a retirement benefit plan for full-time directors. The Company recorded a liability for retirement benefit for full-time directors of ¥382,881 thousand and ¥399,989 thousand, which would be required if they were all to retire at March 31, 2017 and 2018, respectively.

IIJ had a retirement benefit plan for full-time company auditors, which was abolished in June 2016. The allowance for retirement benefit amounted to ¥8,020 thousand in consideration of their services provided up to the date of abolition of the plan, and this amount will be reserved until each company auditor’s retirement date. The Company recorded a liability for retirement benefit for full-time company auditors of ¥8,020 thousand, which would be required if they were all to retire at March 31, 2017 and 2018, respectively.

F-38

14. SHAREHOLDERS' EQUITY

Japanese companies are subject to the Corporation Law of Japan (the “Corporation Law”). The significant provisions in the Corporation Law that affect financial and accounting matters are summarized below:

Dividends

Under the Corporation Law, companies can pay dividends at any time during the fiscal year in addition to the year-end dividend upon resolution at the shareholders meeting. For companies that meet certain criteria such as: (1) having a Board of Directors, (2) having independent auditors, (3) having a Board of Company Auditors, and (4) the term of service of the directors is prescribed as one year rather than two years of normal term by its articles of incorporation, the Board of Directors may declare dividends (except for dividends-in-kind) at any time during the fiscal year if the company has prescribed so in its articles of incorporation. However, the Company cannot do so because it does not meet criteria (4) above. The Corporation Law permits companies to distribute dividends-in-kind (non-cash assets) to shareholders subject to a certain limitation and additional requirements. Semiannual interim dividends may also be paid once a year upon resolution by the Board of Directors if the articles of incorporation of the company so stipulate. The Corporation Law provides certain limitations on the amounts available for dividends or the purchase of treasury stock. The limitation is defined as the amount available for distribution to the shareholders, but the amount of net assets after dividends must be maintained at no less than ¥3 million.

At the 14th Ordinary General Shareholders Meeting held on June 28, 2006, IIJ’s shareholders approved the reduction of additional paid-in capital of ¥21,980,395 thousand and common stock of ¥2,539,222 thousand to eliminate the accumulated deficit for the purpose of reporting under the Corporation Law in its non-consolidated financial statements. The effective date was August 4, 2006.

Increase/decreases and transfer of common stock, reserve and surplus

The Corporation Law requires that an amount equal to 10% of dividends must be appropriated as legal reserve (a component of retained earnings) or as additional paid-in capital (a component of capital surplus) depending on the equity account charged upon the payment of such dividends until the total of aggregate amount of legal reserve and additional paid-in capital equals 25% of common stock. Under the Corporation Law, the total amount of additional paid-in capital and legal reserve may be reversed without limitation. The Corporation Law also provides that common stock, legal reserve, additional paid-in capital, and other capital surplus and retained earnings can be transferred among the accounts under certain conditions upon resolution of shareholders.

Treasury stock and treasury stock acquisition rights

The Corporation Law also provides for companies to purchase treasury stock and dispose of such treasury stock by resolution of the Board of Directors. The amount of treasury stock purchased cannot exceed the amount available for distribution to the shareholders which is determined by a specific formula. The Corporation Law also provides that companies can purchase both treasury stock acquisition rights and treasury stock.

The amount of retained earnings available for dividends under the Corporation Law is based on the amount of retained earnings recorded in IIJ’s general books of account prepared using accepted Japanese accounting practices. The adjustments included in the accompanying consolidated financial statements for U.S. GAAP purposes but not recorded in the general books of account have no effect on the determination of retained earnings available for dividends under the Corporation Law. Retained earnings available for dividends amounted to ¥27,090,361 thousand at March 31, 2018.

IIJ's equity in undistributed earnings of affiliated companies accounted for by the equity method included in retained earnings amounted to ¥1,075,129 thousand at March 31, 2018.

On June 26, 2015, IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at March 31, 2015 of ¥11 per share or the aggregate amount of ¥505,365 thousand.

On November 9, 2015, the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at September 30, 2015 of ¥11 per share or the aggregate amount of ¥505,479 thousand.

On June 24, 2016, IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at March 31, 2016 of ¥11 per share or the aggregate amount of ¥505,480 thousand.

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On November 4, 2016, the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at September 30, 2016 of ¥13.5 per share or the aggregate amount of ¥620,361 thousand.

On June 28, 2017, IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at March 31, 2017 of ¥13.5 per share or the aggregate amount of ¥608,317 thousand.

On November 7, 2017, the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at September 30, 2017 of ¥13.5 per share or the aggregate amount of ¥608,349 thousand.

Stock Option Plans

On May 26, 2011, IIJ’s Board of Directors resolved to introduce stock compensation-type stock options for executive officers of IIJ. On June 28, 2011, IIJ’s ordinary general meeting of shareholders approved the introduction of stock compensation-type stock options for directors of IIJ. Stock compensation-type stock options, which are stock acquisition rights entitling holders to acquire shares upon exercise at an exercise price of one yen per share were allocated to directors and executive officers as a substitute for the retirement allowance plan for them and to further promote their motivation and incentives to contribute to the enhancement of the mid- to long-term continuous business performance and corporate value.

The stock acquisition rights become exercisable after a service period of one year and are exercisable up to 29 years from the date of vesting. The stock acquisition rights may be exercised only within 10 days from the day immediately following the day on which the person loses his or her position as either a director or an executive officer.

On July 13, 2015, IIJ granted 151 stock options which were the same type of options granted in 2014 to directors and executive officers. The fair value per option at the date of grant was ¥369,200.

On July 11, 2016, IIJ granted 162 stock options which were the same type of options granted in 2015 to directors and executive officers. The fair value per option at the date of grant was ¥360,000.

On July 14, 2017, IIJ granted 169 stock options which were the same type of options granted in 2016 to directors and executive officers. The fair value per option at the date of grant was ¥337,200.

The fair value of the stock acquisition rights used to recognize compensation expense for the fiscal years ended March 31, 2016, 2017 and 2018 were estimated using the Black-Scholes option-pricing model with the following assumptions:

	2016			2017			2018
Assumptions:
Risk-free interest rate		0.818	%		-0.147	%		0.327	%
Expected lives (years)		15			15			15
Expected volatility		53.794	%		52.202	%		50.582	%
Expected dividends		1.023	%		1.045	%		1.316	%

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A summary of the activities for the stock acquisition rights plan for the years ended March 31, 2017 and 2018 is as follows:

							Yen		Years		Thousands of Yen
	Number of Options			Number of Shares			Exercise Price		Remaining Life		Total Intrinsic Value
Unexercised options outstanding—March 31, 2016		557			111,400		¥	1
Granted		162			32,400			1
Exercised		-			-			-
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2017		719			143,800			1
Granted		169			33,800			1
Exercised		(12	)		(2,400	)		1
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2018		876			175,200			1
Exercisable options—March 31, 2018		707			141,400			1		25.80	¥	304,898
Expected to vest after July 15, 2018		169			33,800			1		29.31		72,882

The Company recognized stock compensation cost on a straight-line basis over the requisite service period. The Company recognized ¥55,337 thousand, ¥57,678 thousand and ¥57,321 thousand as stock compensation cost for the fiscal years ended March 31, 2016, 2017 and 2018, respectively. The unrecognized expense of ¥14,247 thousand is expected to be recognized over the next 3 months.

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15. OTHER COMPREHENSIVE INCOME (LOSS)

Tax effects allocated to each component of other comprehensive income (loss) and reclassification adjustments for the years ended March 31, 2016, 2017 and 2018 are as follows:

	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2016:
Foreign currency translation adjustments	¥	(67,652	)		-		¥	(67,652	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		(417,400	)	¥	128,977			(288,423	)
Less: Reclassification adjustments for gain (loss) included in net income		3,965			(1,328	)		2,637
Other		-			9,834			9,834
Net unrealized holding gain (loss) during the period		(413,435	)		137,483			(275,952	)
Defined benefit pension plans:
Amount arising during the period		(585,332	)		192,576			(392,756	)
Less: Reclassification adjustments for gain (loss) included in net income		(2,606	)		944			(1,662	)
Net defined benefit pension plans		(587,938	)		193,520			(394,418	)
Other comprehensive income (loss)	¥	(1,069,025	)	¥	331,003		¥	(738,022	)
Year ended March 31, 2017:
Foreign currency translation adjustments	¥	(188,036	)	¥	6,926		¥	(181,110	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		1,840,782			(579,846	)		1,260,936
Less: Reclassification adjustments for gain (loss) included in net income		27,846			(8,827	)		19,019
Other		-			140			140
Net unrealized holding gain (loss) during the period		1,868,628			(588,533	)		1,280,095
Defined benefit pension plans:
Amount arising during the period		276,702			(87,161	)		189,541
Less: Reclassification adjustments for gain (loss) included in net income		24,584			(10,079	)		14,505
Net defined benefit pension plans		301,286			(97,240	)		204,046
Other comprehensive income (loss)	¥	1,981,878		¥	(678,847	)	¥	1,303,031

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	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2018:
Foreign currency translation adjustments	¥	2,081		¥	(2,985	)	¥	(904	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		4,714,731			(1,485,140	)		3,229,591
Less: Reclassification adjustments for gain (loss) included in net income		(1,068,303	)		380,922			(687,381	)
Net unrealized holding gain (loss) during the period		3,646,428			(1,104,218	)		2,542,210
Defined benefit pension plans:
Amount arising during the period		44,710			(14,083	)		30,627
Less: Reclassification adjustments for gain (loss) included in net income		5,489			(2,250	)		3,239
Net defined benefit pension plans		50,199			(16,333	)		33,866
Other comprehensive income (loss)	¥	3,698,708		¥	(1,123,536	)	¥	2,575,172

The changes in accumulated other comprehensive income (loss) by component for the years ended March 31, 2016, 2017 and 2018 are as follows:

	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2015:	¥	1,544,946		¥	(229,203	)	¥	622,906		¥	1,938,649
Other comprehensive income (loss) before reclassifications		(278,589	)		(392,756	)		(71,610	)		(742,955	)
Amounts reclassified out of accumulated other comprehensive income		2,637			(1,662	)		-			975
Other comprehensive loss		(275,952	)		(394,418	)		(71,610	)		(741,980	)
Year ended March 31, 2016:	¥	1,268,994		¥	(623,621	)	¥	551,296		¥	1,196,669

	Thousands of Yen
	Unrealized holding gain on securities		Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2016:	¥	1,268,994	¥	(623,621	)	¥	551,296		¥	1,196,669
Other comprehensive loss before reclassifications		1,261,076		189,541			(181,110	)		1,269,507
Amounts reclassified out of accumulated other comprehensive income		19,019		14,505			-			33,524
Other comprehensive income (loss)		1,280,095		204,046			(181,110	)		1,303,031
Year ended March 31, 2017:	¥	2,549,089	¥	(419,575	)	¥	370,186		¥	2,499,700

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	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2017:	¥	2,549,089		¥	(419,575	)	¥	370,186		¥	2,499,700
Other comprehensive income (loss) before reclassifications		3,229,591			30,627			(904	)		3,259,314
Amounts reclassified out of accumulated other comprehensive income		(687,381	)		3,239			-			(684,142	)
Other comprehensive income (loss)		2,542,210			33,866			(904	)		2,575,172
Year ended March 31, 2018:	¥	5,091,299		¥	(385,709	)	¥	369,282		¥	5,074,872

The amounts reclassified from accumulated other comprehensive income (loss) to the consolidated statements of income, with presentation location, for the years ended March 31, 2016, 2017 and 2018, are as follows:

	Thousands of Yen
	2016			2017			2018			Location
Other comprehensive income (loss) components:
Unrealized holding gain on securities		-		¥	2,708		¥	1,068,303		Net gain on sales of other investments
	¥	(3,965	)		(30,554	)		-		Impairment of other investments
		1,328			8,827			(380,922	)	Income tax expense
		(2,637	)		(19,019	)		687,381		Net income
Defined benefit pension plans		2,606			(24,584	)		(5,489	)	Net periodic pension costs (Note 13)
		(944	)		10,079			2,250		Income tax expense
		1,662			(14,505	)		(3,239	)	Net income
Total amount reclassified	¥	(975	)	¥	(33,524	)	¥	726,568

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16. BASIC AND DILUTED NET INCOME PER COMMON SHARE

Basic and diluted net income attributable to Internet Initiative Japan Inc. per common share for the three years ended March 31, 2016, 2017 and 2018 is as follows:

	Thousands of Yen
	2016		2017		2018
Numerator:
Net income attributable to Internet Initiative Japan Inc.―basic and diluted	¥	4,038,282	¥	3,166,510	¥	5,108,949

	Number of Shares
	2016		2017		2018
Denominator:
Weighted-average common shares outstanding―basic		45,950,098		45,652,981		45,062,878
Dilutive effect of stock options		93,285		119,489		152,808
Weighted-average common shares outstanding―diluted		46,043,383		45,772,470		45,215,686

	Yen
	2016		2017		2018
Basic net income attributable to Internet Initiative Japan Inc. per common share	¥	87.88	¥	69.36	¥	113.37
Diluted net income attributable to Internet Initiative Japan Inc. per common share	¥	87.71	¥	69.18	¥	112.99

17. COMMITMENTS AND CONTINGENT LIABILITIES

The Company is involved in litigation and claims arising in the ordinary course of business. In evaluating the matter on an ongoing basis, the Company takes into account amounts already accrued on the consolidated balance sheet. The Company believes that an exposure to loss does not exist in excess of the amount accrued and the negative adverse outcome of such litigation and claims would not have a significant impact on the consolidated financial position or results of operations.

On September 1, 2010, IIJ-Global entered into a Solutions Engagement Agreement with IBM Japan Ltd., IIJ-Global’s largest sales partner. This agreement, which establishes the basis for a procurement relationship between IIJ-Global and IBM Japan, contains indemnification for IIJ-Global to perform services, functions, responsibilities and others in a way that were being performed by AT&T Japan. This agreement renews automatically every year. IIJ-Global had no obligation for the indemnification as of March 31, 2018.

In May 2006, January 2007, January 2008 and January 2015, IIJ entered into agreements (four agreements in total) for investing in funds which invest in mainly unlisted stocks with an investment advisory company. IIJ committed to provide up to $5,000 thousand for each fund ($20,000 thousand in total) upon the request of the fund until January 31, 2027. IIJ has provided a total of $16,357 thousand to the funds as of March 31, 2018. The amounts invested in their funds were recorded as other investments in the Company’s consolidated balance sheets.

In April 2013, IIJ entered into an agreement to invest in a corporation reconstruction fund with an investment advisory company. IIJ committed to provide up to ¥100,000 thousand upon the request of the fund until April 23, 2018. IIJ has provided a total of ¥92,816 thousand to the fund as of March 31, 2018. The amounts invested in the fund were recorded as other investments in the Company’s consolidated balance sheets.

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18. FINANCIAL INSTRUMENTS

Fair Value—In the normal course of business, the Company invests in financial assets. To estimate the fair value of those financial assets, the Company uses quoted market prices to the extent that they are available. Where a quoted market price is not available, the Company estimates fair value using primarily the discounted cash flow method. For certain financial assets and liabilities, such as trade receivables and trade payables, which are expected to be collected and settled within one year, the Company assumes that the carrying amount approximates fair value due to their short maturities. Investments for which it is not practicable to estimate fair value primarily consist of investments in a number of unaffiliated and unlisted smaller sized companies and the estimate of their fair values cannot be made without incurring excessive costs. Refundable insurance policies are carried at cash surrender value. Long-term borrowings and long-term accounts payable are valued based on the present value of future cash flows associated with each instruments discounted using current market borrowing rates for similar debt instruments of comparable maturity. The carrying amounts and fair value of financial instruments are summarized below:

	Thousands of Yen
	2017				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Other investments for which it is:
Practicable to estimate fair value	¥	5,780,340	¥	5,780,340	¥	9,288,208	¥	9,288,208
Not practicable		2,144,574		-		2,086,234		-
Noncurrent refundable insurance policies (other assets)		211,526		211,526		272,610		272,610
Long-term borrowings		8,500,000		8,485,311		15,500,000		15,437,103
Long-term accounts payable (other noncurrent liabilities)		1,468,183		1,466,952		896,810		895,770

Cash and cash equivalents were classified as Level 1 instruments. Short-term and long-term borrowings and long-term accounts payable were classified as Level 2 instruments.

Other investments for which it is practicable to estimate fair value are available-for-sales equity and debt securities disclosed in Note 4.

Other investments for which it is not practicable to estimate fair value were comprised of non-marketable equity securities of ¥1,123,620 thousand and investments in funds of ¥1,020,954 thousand as of March 31, 2017 and non-marketable equity securities of ¥1,013,806 thousand and investments in funds of ¥1,072,428 thousand as of March 31, 2018

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19.FAIR VALUE MEASUREMENTS

ASC 820, “Fair Value Measurement”, defines fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. ASC 820 establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value as follows:

Level 1—	Inputs are quoted prices in active markets for identical assets or liabilities.
Level 2—	Inputs are quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
Level 3—	Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable, which reflect the reporting entity’s own assumptions about the assumptions that market participants would use in establishing a price.

There were no transfers between Level 1 and Level 2 for the years ended March 31, 2017 and 2018.

Assets Measured at Fair Value on a Recurring Basis

The following table presents the Company’s assets that are measured at fair value on a recurring basis at March 31, 2017 and 2018, consistent with the fair value hierarchy provisions of ASC 820.

	Thousands of  Yen
March 31, 2017	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	5,669,510		-		-	¥	5,669,510
Available-for-sale securities— debt securities		-	¥	110,830		-		110,830
Total assets	¥	5,669,510	¥	110,830		-	¥	5,780,340

	Thousands of  Yen
March 31, 2018	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	9,176,038		-		-	¥	9,176,038
Available-for-sale securities— debt securities		-	¥	112,170		-		112,170
Total assets	¥	9,176,038	¥	112,170		-	¥	9,288,208

Available-for-sale securities are comprised of marketable equity and debt securities. Marketable equity securities are listed on Japan and Hong Kong securities markets and are valued using an unadjusted quoted market price in active markets with sufficient volume and frequency of transactions. Marketable debt securities are valued using quoted prices obtained from financial institutions.

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Assets Measured at Fair Value on a Nonrecurring Basis

	Thousands of Yen
March 31, 2017	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Trademark		-		-	¥	15,000	¥	81,000
		-		-	¥	15,000	¥	81,000

	Thousands of Yen
March 31, 2018	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Non-marketable securities—equity securities		-		-	¥	17,616	¥	109,840
		-		-	¥	17,616	¥	109,840

The trademark right related to hi-ho with a carrying amount of ¥96,000 thousand was written down to a fair value of ¥15,000 thousand, resulting in an impairment charge of ¥81,000 thousand, which was included in the Company’s consolidated statement of income for the year ended March 31, 2017. The impaired trademark was classified within Level 3 as the Company used unobservable inputs such as expected future income to value the trademark.

Non-marketable equity securities with a carrying amount of ¥127,456 thousand, which was included in other investments in the balance sheets, were written down to the fair value of ¥17,616 thousand, resulting in an other-than-temporary impairment charge of ¥109,840 thousand, which was included in the consolidated statement of income for the year ended March 31, 2018. The Company used unobservable inputs to value the impairment of these non-marketable Level 3 investments. The fair value was determined as a result of considering various unobservable inputs, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in assets and liabilities held by the investees.

Level 3 valuations are determined by the Company’s valuation team (accounting and financing managers) based on the methodologies used to perform the valuation of each instrument. The Company uses third-party valuation firms to conduct the valuation of certain instruments, if necessary. Detailed reviews of the methodologies in valuations and the reasonableness of the valuations (including those performed by third parties) are performed by the Chief Financial Officer.

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The following table presents information relating to the significant unobservable inputs of the Company’s Level 3 non-recurring measurements.

	Thousands of Yen
March 31, 2017	Fair value		Valuation technique	Unobservable inputs	Range
Trademark		¥15,000	Relief from	Discount Rate		6.8%
			royalty method	Royalty rate		0.1%

20. BUSINESS SEGMENTS

The operating segments reported below are those for which segment-specific financial information is available. Accounting policies used to determine segment profit or loss and segment assets are consistent with those used to prepare the consolidated financial statements in accordance with U.S. GAAP. The Company’s chief operating decision-maker uses this financial information to make decisions on the allocation of resources and to evaluate business performance.

The Network service and systems integration business segment comprises revenues from network services, systems integration and equipment sales.

The ATM operation business segment comprises revenues from the ATM operation business.

Revenues:

	Thousands of Yen
	2016			2017			2018
Network service and systems integration business:
Customers	¥	136,759,130		¥	153,738,978		¥	172,019,965
Intersegment		383,058			387,178			350,155
Total		137,142,188			154,126,156			172,370,120
ATM operation business:
Customers		3,888,878			4,050,081			4,030,684
Intersegment		-			-			-
Total		3,888,878			4,050,081			4,030,684
Elimination		(383,058	)		(387,178	)		(350,155	)
Consolidated total	¥	140,648,008		¥	157,789,059		¥	176,050,649

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Segment Profit or Loss:

	Thousands of Yen
	2016			2017			2018
Operating income:
Network service and systems integration business	¥	5,127,807		¥	3,853,960		¥	5,430,148
ATM operation business		1,148,922			1,437,601			1,510,176
Elimination		(136,375	)		(157,254	)		(178,122	)
Consolidated total	¥	6,140,354		¥	5,134,307		¥	6,762,202

Segment Assets:

	Thousands of Yen
	2017		2018
Segment assets:
Network service and systems integration business	¥	132,756,717	¥	150,229,527
ATM operation business		4,638,432		5,219,292
Elimination		-		(2,000,000	)
Consolidated total	¥	137,395,149	¥	153,448,819

Other significant items:

	Thousands of Yen
	2016		2017		2018
Depreciation and amortization:
Network service and systems integration business	¥	9,377,657	¥	10,400,255	¥	11,900,494
ATM operation business		543,898		493,402		464,379
Consolidated total	¥	9,921,555	¥	10,893,657	¥	12,364,873

For information regarding the goodwill and the other impairment losses on intangible assets, see Note 8, “Goodwill and Other intangible assets.”

Transfers between reportable businesses are made at market-based prices. Operating income is operating revenue less costs and operating expenses.

Substantially all revenues are from customers operating in Japan. Geographic information is not presented due to immateriality of revenue attributable to international operations.

21. ADVERTISING EXPENSES

Advertising expenses incurred during the years ended March 31, 2016, 2017 and 2018 related primarily to advertisements in magazines, journals and newspapers and amounted to ¥815,439 thousand, ¥953,632 thousand and ¥1,459,747 thousand, respectively.

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22. RELATED PARTY TRANSACTIONS

NTT and its subsidiaries own 26.0% of IIJ's outstanding common shares and 26.9% of IIJ's voting shares as of March 31, 2018.

The Company entered into a number of different types of transactions with NTT and its subsidiaries, including purchases of wireline telecommunication services for the Company’s offices and capital lease arrangements. For the Company’s connectivity and outsourcing services, the Company purchases international and domestic backbone services, local access lines and rental rack space in data centers and mobile data communication services from NTT and its subsidiaries. The Company sells to NTT and its subsidiaries its services, system integration services and monitoring services for their data centers.

The amounts of balances as of March 31, 2017 and 2018 and transactions of the Company with NTT and its subsidiaries for each of the three years in the period ended March 31, 2018, are summarized as follows:

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	275,671	¥	287,812
Other current assets		-		889,061		2,253,882
Accounts payable		-		3,970,794		4,103,560
Capital lease obligations		-		2,771,532		3,088,795
Revenues	¥	3,129,622		3,440,263		3,902,856
Costs		24,268,440		31,991,750		36,729,517
Interest expense		30,370		48,234		64,795

As for balances and transactions with equity method investees, refer to Note 6, “Investments in Equity Method Investees.”

23. SUBSEQUENT EVENTS

On June 28, 2018, IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at March 31, 2018 of ¥13.5 per share or ¥608,349 thousand in the aggregate.

* * * * * *

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EX-4.5

Exhibit 4.5

(English Translation)

Agreement on Limited Liability

Internet Initiative Japan, Inc. (“IIJ”) and [name of outside director / outside statutory auditor], an outside director of IIJ, (the "Director") / an outside statutory auditor of IIJ, (the “Auditor”) agree as follows in respect of limited liability for damages stipulated in Article 423 paragraph 1 of the Corporation Law of Japan of the Director/the Auditor to the company pursuant to the provision of Article 427 paragraph 1 of the Corporation Law of Japan.

Article 1.        (Maximum Amount of Limited Liability)

If, after the execution hereof, the Director/the Auditor conducts any of the acts stipulated in Article 423 paragraph 1 of the Corporation Law of Japan as an outside director/an outside statutory auditor of IIJ and causes IIJ to sustain any damages as a result of such act, the Director/the Auditor shall, save for acts conducted by himself/herself with any willful misconduct or gross negligence, bear the limited liability for such damages amounting to 10 million yen or the aggregate of the amounts set forth in Article 425 paragraph 1 of the Corporation Law of Japan, whichever is higher.

Article 2.        (Expiration of Agreement on Limited Liability)

This Agreement shall expire at any time in the future if the Director /the Auditor becomes a director, an executive officer, or an employee entitled to execute the business of IIJ or a subsidiary thereof.

Article 3.        (Term)

This Agreement shall apply to the acts which the Director/the Auditor conducts until he/she retires from the position of director of IIJ

Article 4.        (Deposit of Certificate of Stock Acquisition Rights)

If in case the Director/the Auditor possesses the certificate of stock acquisition right issued concerning the rights set forth in Article 288 paragraph 1 of the Corporation Law of Japan (including the certificate of stock acquisition rights issued concerning the rights set forth in Article 280-19 paragraph 1 of the Commercial Code of Japan which is granted pursuant to the resolution set forth in Article 280-21 paragraph 1 of the Commercial Code of Japan) IIJ notifies the Director/the Auditor that the Director/the Auditor has caused IIJ to sustain damages by conducting the acts set forth in Article 423 paragraph 1 of the Corporation Law of Japan, the Director/the Auditor shall promptly deliver the certificate of stock acquisition rights to the care and custody of IIJ.

Article 5.        (Disclosure of Agreement on Limited Liability)

IIJ may disclose the existence and contents of this Agreement to a third party if such disclosure is required by provisions of applicable laws or regulations.

Article 6.        (Jurisdiction by Agreement)

Any incident or dispute arising out of or in relation to this Agreement shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

IN WITNESS WHEREOF, this Agreement is executed in duplicate, and with their seals and signatures affixed, each party retains one original, respectively.

Date: June 28, 2018

IIJ:	Internet Initiative Japan, Inc.
	Iidabashi Grand Bloom, 2-10-2 Fujimi, Chiyoda-ku, Tokyo 102-0071, JAPAN
	Eijiro Katsu President & COO
Director:	[name of outside director/auditor]

EX-12.1

Exhibit 12.1

CERTIFICATIONS

I, Koichi Suzuki, certify that:

1. I have reviewed this annual report on Form 20-F of Internet Initiative Japan Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

5. The company’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Date: June 29, 2018

Internet Initiative Japan Inc.
/s/ Koichi Suzuki
Name:	Koichi Suzuki
Title:	Chairman, Chief Executive Officer
	and Representative Director

EX-12.2

Exhibit 12.2

CERTIFICATIONS

I, Akihisa Watai, certify that:

1. I have reviewed this annual report on Form 20-F of Internet Initiative Japan Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

4. The company’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the company’s internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company’s internal control over financial reporting; and

5. The company’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.

Date: June 29, 2018

Internet Initiative Japan Inc.
/s/ Akihisa Watai
Name:	Akihisa Watai
Title:	Managing Director, Chief Financial
	Officer and Chief Accounting Officer

EX-13.1

Exhibit 13.1

CERTIFICATIONS
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to 18 U.S.C. § 1350, the undersigned officer of Internet Initiative Japan Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that the Company’s annual report on Form 20-F for the year ended March 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: June 29, 2018

Internet Initiative Japan Inc.
/s/ Koichi Suzuki
Name:	Koichi Suzuki
Title:	Chairman, Chief Executive Officer
	and Representative Director

EX-13.2

Exhibit 13.2

CERTIFICATIONS
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to 18 U.S.C. § 1350, the undersigned officer of Internet Initiative Japan Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that the Company’s annual report on Form 20-F for the year ended March 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: June 29, 2018

Internet Initiative Japan Inc.
/s/ Akihisa Watai
Name:	Akihisa Watai
Title:	Managing Director, Chief Financial
	Officer and Chief Accounting Officer

XML

Document And Entity Information	12 Months Ended
	Mar. 31, 2018 shares
Document Information [Line Items]
Entity Registrant Name	INTERNET INITIATIVE JAPAN INC
Entity Central Index Key	0001090633
Trading Symbol	iiji
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)	46,713,800
Document Type	20-F
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false

XML

Consolidated Balance Sheets - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	¥ 21,402,892	¥ 21,958,591
Accounts receivable, net of allowance for doubtful accounts of ¥107,684 thousand and ¥123,453 thousand at March 31, 2017 and 2018, respectively (Notes 5, 6 and 22)	31,830,882	27,383,692
Inventories (Note 3)	1,714,547	2,798,054
Prepaid expenses - current	8,442,981	7,610,925
Deferred tax assets - current (Note 12)		1,298,469
Other current assets, net of allowance for doubtful accounts of ¥15,192 thousand and ¥720 thousand at March 31, 2017 and 2018, respectively (Notes 5, 9 and 22)	3,793,449	2,672,008
Total current assets	67,184,751	63,721,739
INVESTMENTS IN EQUITY METHOD INVESTEES (Note 6)	5,246,313	3,150,175
OTHER INVESTMENTS (Notes 4, 17, 18 and 19)	11,374,442	7,924,914
PROPERTY AND EQUIPMENT—Net (Notes 7 and 9)	46,414,250	39,775,444
GOODWILL (Note 8)	6,082,472	6,169,609
OTHER INTANGIBLE ASSETS—Net (Note 8)	2,704,668	3,087,017
GUARANTEE DEPOSITS (Note 9)	3,422,443	3,060,365
DEFERRED TAX ASSETS - Noncurrent (Note 12)	183,808	80,566
NET INVESTMENT IN SALES-TYPE LEASES - Noncurrent (Note 9)	1,545,293	2,047,682
PREPAID EXPENSES-Noncurrent	7,965,889	6,607,437
OTHER ASSETS, net of allowance for doubtful accounts and loans of ¥61,877 thousand and ¥60,929 thousand at March 31, 2017 and 2018, respectively (Notes 5 and 18)	1,324,490	1,770,201
TOTAL	153,448,819	137,395,149
CURRENT LIABILITIES:
Short-term borrowings (Note 11)	9,250,000	9,250,000
Capital lease obligations—current portion (Note 9 and 22)	5,655,875	4,818,723
Accounts payable—trade (Notes 6 and 22)	14,950,920	14,653,065
Accounts payable—other	1,448,423	2,308,790
Income taxes payable (Note 12)	1,928,037	1,075,745
Accrued expenses	3,111,385	2,755,581
Deferred income—current	4,237,676	3,750,542
Other current liabilities (Notes 10 and 12)	1,562,717	1,370,661
Total current liabilities	42,145,033	39,983,107
LONG-TERM BORROWINGS (Notes 11 and 18)	15,500,000	8,500,000
CAPITAL LEASE OBLIGATIONS—Noncurrent (Note 9 and 22)	10,920,726	10,384,643
ACCRUED RETIREMENT AND PENSION COSTS (Note 13)	3,724,634	3,532,965
DEFERRED TAX LIABILITIES—Noncurrent (Note 12)	688,787	963,845
DEFERRED INCOME—Noncurrent	3,952,279	3,656,612
OTHER NONCURRENT LIABILITIES (Note 10 and 11)	2,528,803	2,993,777
Total liabilities	79,460,262	70,014,949
COMMITMENTS AND CONTINGENCIES (Note 17)
SHAREHOLDERS' EQUITY (Notes 4, 13, 14 and 15):
Common stock—authorized, 75,520,000 shares; issued and outstanding, 46,711,400 and 46,713,800 shares at March 31, 2017 and 2018, respectively	25,511,804	25,509,499
Additional paid-in capital	36,175,937	36,117,511
Retained earnings	8,404,228	4,511,945
Accumulated other comprehensive income	5,074,872	2,499,700
Treasury stock—1,650,909 shares held by the company at March 31, 2017 and 2018, respectively	(1,896,784)	(1,896,784)
Total Internet Initiative Japan Inc. shareholders' equity	73,270,057	66,741,871
NONCONTROLLING INTERESTS	718,500	638,329
Total equity	73,988,557	67,380,200
TOTAL	¥ 153,448,819	¥ 137,395,149

XML

Consolidated Balance Sheets (Parentheticals) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Accounts receivable, allowance for doubtful accounts	¥ 123,453	¥ 107,684
Other current assets, allowance for doubtful accounts	720	15,192
Other assets, net of allowance doubtful accounts	¥ 60,929	¥ 61,877
Common stock, shares authorized (in shares)	75,520,000	75,520,000
Common stock, shares issued (in shares)	46,713,800	46,711,400
Common stock, shares outstanding (in shares)	46,713,800	46,711,400
Treasury stock, shares (in shares)	1,650,909	1,650,909

XML

Consolidated Statements of Income - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
REVENUES (Notes 6 and 22):
Revenues	¥ 176,050,649	¥ 157,789,059	¥ 140,648,008
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Costs	147,817,367	132,542,368	115,992,823
Sales and marketing (Note 21)	12,688,046	11,431,467	10,588,887
General and administrative (Note 2, 7 and 8)	8,295,583	8,214,598	7,470,746
Research and development	487,451	466,319	455,198
Total costs and expenses	169,288,447	152,654,752	134,507,654
OPERATING INCOME	6,762,202	5,134,307	6,140,354
OTHER INCOME (EXPENSES):
Dividend income	242,576	117,567	93,054
Interest income	30,527	35,259	27,587
Interest expense	(375,202)	(303,685)	(241,057)
Foreign exchange loss, net	(15,863)	(45,116)	(71,270)
Net gain on sales of other investments (Note 4)	1,068,303	216,646	23,765
Loss on sales of an investment in equity method investee		(12,070)
Impairment of other investments (Note 4)	(109,840)	(30,554)	(14,729)
Other—net	237,420	314,806	235,630
Other income—net	1,077,921	292,853	52,980
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)	7,840,123	5,427,160	6,193,334
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)	7,840,123	5,427,160	6,193,334
INCOME TAX EXPENSE (Note 12)	2,695,839	2,224,880	2,183,531
EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES (Note 6)	134,656	129,791	180,219
NET INCOME	5,278,940	3,332,071	4,190,022
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(169,991)	(165,561)	(151,740)
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥ 5,108,949	¥ 3,166,510	¥ 4,038,282
NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER SHARE (Note 16):
Basic weighted-average number of common shares outstanding (in shares)	45,062,878	45,652,981	45,950,098
Diluted weighted-average number of common shares outstanding (in shares)	45,215,686	45,772,470	46,043,383
BASIC NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER COMMON SHARE (in JPY per share)	¥ 113.37	¥ 69.36	¥ 87.88
DILUTED NET INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC. PER COMMON SHARE (in JPY per share)	¥ 112.99	¥ 69.18	¥ 87.71
Internet Connectivity Services, Enterprise [Member]
REVENUES (Notes 6 and 22):
Revenues	¥ 27,943,656	¥ 22,633,739	¥ 17,597,343
Internet Connectivity Services, Consumer [Member]
REVENUES (Notes 6 and 22):
Revenues	24,761,487	21,734,968	15,255,596
WAN Services [Member]
REVENUES (Notes 6 and 22):
Revenues	29,295,097	26,459,697	25,176,730
Outsourcing Services [Member]
REVENUES (Notes 6 and 22):
Revenues	26,118,657	22,167,432	21,265,895
Network Services [Member]
REVENUES (Notes 6 and 22):
Revenues	108,118,897	92,995,836	79,295,564
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Costs	88,697,639	76,386,849	64,239,600
Systems Construction [Member]
REVENUES (Notes 6 and 22):
Revenues	22,527,433	22,625,753	21,144,677
Systems Operation and Maintenance [Member]
REVENUES (Notes 6 and 22):
Revenues	37,903,235	35,122,940	33,043,669
Systems Integration [Member]
REVENUES (Notes 6 and 22):
Revenues	60,430,668	57,748,693	54,188,346
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Costs	53,612,063	50,992,480	46,225,629
Equipment Sales [Member]
REVENUES (Notes 6 and 22):
Revenues	3,470,400	2,994,449	3,275,220
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Costs	3,142,262	2,735,169	2,968,711
ATM Operation Business [Member]
REVENUES (Notes 6 and 22):
Revenues	4,030,684	4,050,081	3,888,878
COSTS AND EXPENSES (Notes 5, 6, 9, 13 and 22):
Costs	¥ 2,365,403	¥ 2,427,870	¥ 2,558,883

XML

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
NET INCOME	¥ 5,278,940	¥ 3,332,071	¥ 4,190,022
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX (Note 15):
Foreign currency translation adjustments	(904)	(181,110)	(67,652)
Unrealized holding gain (loss) on securities	2,542,210	1,280,095	(275,952)
Defined benefit pension plans	33,866	204,046	(394,418)
TOTAL COMPREHENSIVE INCOME	7,854,112	4,635,102	3,452,000
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(169,991)	(165,561)	(155,698)
COMPREHENSIVE INCOME ATTRIBUTABLE TO INTERNET INITIATIVE JAPAN INC.	¥ 7,684,121	¥ 4,469,541	¥ 3,296,302

XML

Consolidated Statements of Shareholders' Equity - JPY (¥) ¥ in Thousands	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Noncontrolling Interest [Member]	Total
Balance at Mar. 31, 2015	¥ (556,162)	¥ 1,938,649	¥ 25,499,857	¥ (392,070)	¥ 36,014,128	¥ 339,378	¥ 62,843,780
BALANCE (in shares) at Mar. 31, 2015			46,701,000
Subsidiary stock issuance						3,692	3,692
Issuance of common stock upon exercise of stock options			¥ 9,642		(9,632)		10
Issuance of common stock upon exercise of stock options (in shares)			10,400
Stock-based compensation (Note 14)					55,337		55,337
Net income	4,038,282					151,740	4,190,022
Other comprehensive loss, net of tax		(741,980)				3,958	(738,022)
Dividends paid (Note 14)	(1,010,844)						(1,010,844)
Balance at Mar. 31, 2016	2,471,276	1,196,669	¥ 25,509,499	(392,070)	36,059,833	498,768	¥ 65,343,975
BALANCE (in shares) at Mar. 31, 2016			46,711,400
Issuance of common stock upon exercise of stock options (in shares)
Stock-based compensation (Note 14)					57,678		¥ 57,678
Net income	3,166,510					165,561	3,332,071
Other comprehensive loss, net of tax		1,303,031					1,303,031
Dividends paid (Note 14)	(1,125,841)						(1,125,841)
Dividends paid to noncontrolling interests						(26,000)	(26,000)
Purchase of treasury stock				(1,504,714)			(1,504,714)
Balance at Mar. 31, 2017	4,511,945	2,499,700	¥ 25,509,499	(1,896,784)	36,117,511	638,329	67,380,200
BALANCE (in shares) at Mar. 31, 2017			46,711,400
Issuance of common stock upon exercise of stock options			¥ 2,305		(2,303)		¥ 2
Issuance of common stock upon exercise of stock options (in shares)			2,400				2,400
Stock-based compensation (Note 14)					57,321		¥ 57,321
Net income	5,108,949					169,991	5,278,940
Other comprehensive loss, net of tax		2,575,172					2,575,172
Dividends paid (Note 14)	(1,216,666)						(1,216,666)
Dividends paid to noncontrolling interests						(46,800)	(46,800)
Change in ownership for non-controlling interests and others					3,408	(43,020)	(39,612)
Balance at Mar. 31, 2018	¥ 8,404,228	¥ 5,074,872	¥ 25,511,804	¥ (1,896,784)	¥ 36,175,937	¥ 718,500	¥ 73,988,557
BALANCE (in shares) at Mar. 31, 2018			46,713,800

XML

Consolidated Statements of Cash Flows - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
OPERATING ACTIVITIES:
NET INCOME	¥ 5,278,940	¥ 3,332,071	¥ 4,190,022
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,364,873	10,893,657	9,921,555
Impairment loss on intangible assets		81,000	11,000
Provision for retirement and pension costs, less payments	241,868	252,825	200,871
Provision for allowance for doubtful accounts	94,839	68,300	48,407
Gain on sales of property and equipment	(12,376)	(31,809)	(38,219)
Loss on disposal of property and equipment	112,329	170,971	66,169
Net gain on sales of other investments	(1,068,303)	(216,646)	(23,765)
Impairment of other investments	109,840	30,554	14,729
Loss on sales of an investment in equity method investee		12,070
Foreign exchange loss (gain), net	32,514	18,152	(51,727)
Equity in net income of equity method investees, net of dividend received	(83,465)	(78,709)	(124,141)
Deferred income tax expense (benefit)	(312,933)	(94,343)	249,115
Others	29,466	(44,667)	(12,341)
Changes in operating assets and liabilities
Increase in accounts receivable	(4,823,584)	(3,751,392)	(1,565,857)
Decrease in net investment in sales-type lease—noncurrent	502,389	492,530	98,511
Decrease (increase) in inventories	1,085,649	(800,296)	(777,192)
Increase in prepaid expenses	(842,521)	(2,859,763)	(1,083,665)
Increase in other current and noncurrent assets	(2,194,591)	(3,317,968)	(1,485,629)
Increase in accounts payable	358,299	827,792	1,760,207
Increase (decrease) in income taxes payable	861,899	(2,621)	579,414
Increase (decrease) in accrued expenses	351,710	(167,597)	(32,288)
Increase in deferred income—current	487,931	1,257,870	418,162
Increase in deferred income—noncurrent	332,765	604,269	201,897
Increase (decrease) in other current and noncurrent liabilities	354,226	691,442	(513,647)
Net cash provided by operating activities—(Forward)	13,261,764	7,367,692	12,051,588
INVESTING ACTIVITIES:
Purchases of property and equipment	(15,770,587)	(10,623,993)	(10,898,533)
Proceeds from sales of property and equipment	3,305,813	3,046,189	2,574,449
Purchases of available-for-sale securities			(59,490)
Purchases of other investments	(286,695)	(410,587)	(376,067)
Investment in equity method investees	(2,004,808)	(99,000)	(338,166)
Proceeds from sales of available-for-sale securities	1,206,516	4,840	141,235
Proceeds from sales of other investments	157,341	534,549	808,465
Payments of guarantee deposits	(380,343)	(50,345)	(348,005)
Refund of guarantee deposits	26,458	92,002	21,567
Payments for refundable insurance policies	(56,362)	(56,476)	(56,362)
Proceeds from subsidies	48,976	200,000	200,000
Refund from insurance policies			10,108
Proceeds from sale of stock of a subsidiary, net of cash divested (Note 2)	726,081
Other	(9,715)	(13,000)	(56,029)
Net cash used in investing activities	(13,037,325)	(7,375,821)	(8,376,828)
FINANCING ACTIVITIES:
Proceeds from short-term borrowings with initial maturities over three months and long-term borrowings	9,550,000	8,550,000	1,550,000
Repayments of short-term borrowings with initial maturities of over three months	(2,550,000)	(50,000)	(1,550,000)
Principal payments under capital leases	(5,723,729)	(4,819,530)	(4,194,215)
Proceeds from long-term accounts payable		1,498,306
Repayments of long-term accounts payable	(571,373)	(30,122)
Net decrease in short-term borrowings with initial maturities less than three months	(150,000)
Proceeds from issuance of subsidiary stock to noncontrolling interests			3,692
Dividends paid	(1,216,666)	(1,125,841)	(1,010,844)
Payments for purchase of treasury stock		(1,504,714)
Other	(86,410)	(26,000)	10
Net cash provided by (used in) financing activities	(748,178)	2,492,099	(5,201,357)
FORWARD	(523,739)	2,483,970	(1,526,597)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(31,960)	(94,474)	2,059
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(555,699)	2,389,496	(1,524,538)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	21,958,591	19,569,095	21,093,633
CASH AND CASH EQUIVALENTS, END OF YEAR	21,402,892	21,958,591	19,569,095
ADDITIONAL CASH FLOW INFORMATION:
Interest paid	368,413	302,035	241,260
Income taxes paid	2,063,530	2,462,106	1,377,753
NONCASH INVESTING AND FINANCING ACTIVITIES:
Acquisition of assets by entering into capital leases	7,108,629	8,301,695	8,065,674
Facilities purchase liabilities	1,448,423	2,308,790	1,497,767
Asset retirement obligation	¥ 49,609	¥ 31,980	¥ 45,169

XML

Note 1 - Description of Business and Summary of Significant Accounting Policies

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]

1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Internet Initiative Japan Inc. (“IIJ,” a Japanese corporation) was founded in

December 1992

to develop and operate Internet access services and other Internet-related services in Japan. As of

March 31, 2018,

26.9%

of IIJ’s voting shares were jointly owned by Nippon Telegraph and Telephone Corporation (“NTT”) and its subsidiary. IIJ and its subsidiaries (collectively, the “Company”) provide customers substantially operating in Japan with Internet connectivity services, Wide Area Network (“WAN”) services and outsourcing services. The Company also provides systems integration which consists of systems construction and systems operation and maintenance. In addition, a subsidiary of IIJ provides Automated Teller Machines (“ATM”) operation services.

Certain Significant Risks and Uncertainties

The Company relies on telecommunications carriers for a significant portion of its network backbone, on regional NTT subsidiaries, electric power companies and their affiliates for local connections to customers and NTT DoCoMo Inc. (“NTT Docomo”) for mobile connectivity as an MVNO. Currently, NTT Communications Corporation, a wholly owned subsidiary of NTT, and NTT Docomo are major providers of network infrastructure for the Company. The Company believes that its use of multiple carriers and suppliers significantly mitigates the risk of damages from service disruptions. However, any disruption of telecommunication services could have an adverse effect on operating results.

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of accounts receivable. The Company’s management believes that the risks associated with accounts receivable are mitigated by the large number of customers comprising its customer base and its credit line control. The Company also conducts an evaluation of a new customer’s financial condition at the inception of a transaction and continuously monitors delays in payment for each customer.

Summary of Significant Accounting Policies

Basis of Presentation—

IIJ maintains its records and prepares its financial statements in accordance with generally accepted accounting principles in Japan. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform to generally accepted accounting principles in the United States of America (“U.S. GAAP”). These adjustments were

not

recorded in the statutory accounts.

Consolidation—

The consolidated financial statements include the accounts of IIJ and all of its subsidiaries,which are IIJ Engineering Inc. (“IIJ-EG,” which was renamed from Net Care, Inc.), IIJ America, Inc. (“IIJ-America”), Netchart Japan Inc. (“NCJ”), hi-ho Inc. (“hi-ho”), Trust Networks Inc. (“Trust Networks”), IIJ Innovation Institute Inc. (“IIJ-II”), IIJ Global Solutions Inc. (“IIJ-Global”), IIJ Europe Limited (“IIJ-Europe”), RYUKOSHA NETWARE Inc. (“RYUKOSHA”) and

eight

other foreign subsidiaries. All of the subsidiaries, except for IIJ-America, IIJ-Europe and other foreign subsidiaries, have fiscal years ending

March 31.

IIJ-America, IIJ-Europe and other foreign subsidiaries’ fiscal year-end is

December 31

and such date was used for purposes of preparing the consolidated financial statements as it is

not

practicable for the foreign subsidiaries to report their financial results as of

March 31.

There were

no

significant events that occurred during the intervening period that would require adjustment to or disclosure in the accompanying consolidated financial statements. Intercompany transactions and balances have been eliminated in consolidation.

Investments in companies over which IIJ has significant influence but

not

control are accounted for by the equity method. For other-than-temporary declines in the value of investments in equity method investees below the carrying amount, the investments are reduced to fair value and an impairment loss is recognized. Equity method goodwill, which is the portion of the difference between the cost of an investment and the amount of underlying equity in net assets of an investee, is

not

amortized, but equity method investments are continuously reviewed for impairment in accordance with Accounting Standards Codification (“ASC”)

323,

“Investments-Equity Method and Joint Ventures.”

A subsidiary or equity method investee

may

issue its shares to

third

parties at amounts per share in excess of or less than the Company’s average per share carrying value. Changes in a parent’s ownership interest while the parent retains its controlling financial interest in its subsidiary are accounted for as equity transactions.

Use of Estimates—

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Significant estimates and assumptions used are primarily in the areas of evaluation of investments, valuation allowances for deferred tax assets, allowance for doubtful accounts, determination of pension benefit costs and obligations, estimated useful lives of fixed assets and intangible assets with finite useful lives and impairment of long-lived assets, goodwill and intangible assets deemed to have indefinite useful lives. Actual results could differ from those estimates.

Revenue Recognition—

Network service revenues are billed and recognized monthly on a straight-line basis. Initial setup fees received in connection with network services are deferred and recognized over the estimated average period of the subscription for each service.

System integration revenue involves

one

or more of the following deliverables:

・	System construction services―include all or some of the following elements depending on arrangements to meet each of our customer's requirements: consulting, project planning, system design, and the development of network systems. These services also include the installation of software as well as configuration and installation of hardware.
・	Software―we resell third -party software such as Oracle and Windows to our customers, which are installed by us during the system development process.
・	Hardware―we also resell third -party hardware, primarily servers, switches and routers, which we install during the system development process. The hardware is generic hardware that is often sold by third -party manufacturers and resellers.
・	Monitoring and operating services―we monitor our customer's network activity and Internet connectivity to detect and report problems. We also provide constant data backup services.
・	Hardware and software maintenance services―we repair or replace any malfunctioning parts of hardware. We examine software faults and provide suitable solutions to customers.

The system construction services are generally delivered over a

three

-month period. All hardware and software are delivered and installed during this period. Customers are required to pay a specified fixed fee that is

not

payable until after the system construction has been completed and accepted by our customers.

Monitoring, operating, and hardware and software maintenance services generally commence once our customers have accepted the systems, and contract periods are generally from

one

to

five

years. Our contracts include a stated annual fee for these services.

For multiple-element arrangements that include system construction services, hardware, software essential to the hardware product’s functionality and undelivered non-software services (e.g., monitoring and operating services), the Company allocates revenue to all deliverables based on their relative selling prices. The Company uses a hierarchy to determine the selling price to be used for allocating revenue to the deliverables: (i) vendor-specific objective evidence of fair value (“VSOE”), (ii)

third

-party evidence of the selling price (“TPE”) and (iii) best estimate of the selling price (“ESP”). The allocation of revenue is based mainly on the Company’s ESPs except for certain undelivered non-software services for which VSOE has been established. The Company’s process for determining its ESP for deliverables includes various factors that

may

vary depending on the circumstances and specific characteristics related to each deliverable. In developing the ESP, the Company considers customer demand, the existence and effect of competitors, general profit margin realized in the marketplace, volume of the transactions, the Company’s internal costs of providing the deliverables, the profit objectives including targeted and historical margins realized on similar sales to similar customers and the historical pricing practices.

The method used to account for each unit and the period over which each unit of accounting is recognized are as follows:

・	Revenue allocated to system construction services is accounted for using contract accounting. System construction service revenues, which are generally completed within three months, are recognized based on the completed-contract method in compliance with ASC 605 - 35 - 25 - 92 because the Company is unable to bill customers and the title to the constructed network system is not transferred to the customers unless they are satisfied with and accept the completed systems.
・	Revenue related to the hardware and software essential to the hardware product’s functionality is not recognized until the customer acceptance is received because title to the hardware and software do not transfer to our customers until formal acceptance is received.
・	Revenue related to undelivered non-software services (monitoring, operating and hardware maintenance services) is recognized on a straight-line basis over the contract period.

The Company also enters into multiple-element arrangements for system integration services that include software

not

essential to the hardware product’s functionality and software-related services and accounts for them in accordance with ASC

985

-

605,

“Software-Revenue Recognition.” The Company has been able to establish VSOE of fair value of the software-related services based on separate renewal contracts of the services that are consistently priced within a narrow range. The Company allocates revenue to such services based on VSOE and recognizes the revenues on a straight-line basis over the contract period. The Company allocates the residual amount to the software.

Equipment sales revenues are recognized when equipment is delivered and accepted by the customer.

The Company evaluates whether it is appropriate to record the gross amount of revenues and related costs or the net amount earned in reporting system construction services and equipment sales, depending on whether the Company functions as the principal or agent.

The ATM operation business revenues consist primarily of commissions for each withdrawing transaction with the use of ATMs. The ATM commission collected from each withdrawal is aggregated every month and recognized as ATM operation revenues.

Revenue is recognized net of consumption tax collected from customers and subsequently remitted to governmental authorities.

Cash and Cash Equivalents—

Cash and cash equivalents includes time deposits with original maturities of

three

months or less.

Allowance for Doubtful Accounts—

An allowance for doubtful accounts is established in amounts considered to be appropriate based primarily upon the Company's past credit loss experience and an evaluation of potential losses in the receivables outstanding.

Other Investments—

The Company classifies its marketable equity and debt securities as available-for-sale securities, which are accounted for at fair value with unrealized gains and losses excluded from earnings and reported in accumulated other comprehensive income (loss). The cost of securities sold is determined based on average cost.

The Company reviews the fair value of available-for-sale securities on a regular basis to determine if the fair value of any individual security has declined below its cost and if such decline is other-than-temporary. If the decline in value is judged to be other-than-temporary, the cost basis of the investment is written down to fair value. Other-than-temporary declines in value are determined taking into consideration the extent of decline in fair value, the length of time that the decline in fair value below cost has existed, the financial condition and near-term prospects of the issuer, and the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value and events that might accelerate the recognition of impairment. For debt securities for which the declines are deemed to be other-than-temporary and there is

no

intent to sell and it is

not

more likely than

not

that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments are separated into the amount related to credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income (loss). For debt securities for which the declines are deemed to be other-than-temporary and there is an intent to sell or it is more likely than

not

that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments in their entirety are recognized in earnings. For equity securities for which the declines are deemed to be other-than-temporary, the resulting realized loss is recognized in earnings in the period in which the decline is deemed to be other-than-temporary.

Non-marketable equity securities are carried at cost as fair value is

not

readily determinable. When the Company evaluates whether non-marketable equity securities are impaired or

not,

the Company evaluates

first

whether an event or change in circumstances has occurred in the period that

may

have significant adverse effect on the fair value of the securities (an impairment indicator). The Company uses such impairment indicators as follows:

・	A significant deterioration in the earnings performance or business prospects of the investee.
・	A significant adverse change in the regulatory, economic, or technological environment of the investee.
・	A significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates.
・	A recent example of the new issuance of a security, in which the issue price is less than our cost.

The Company estimates the fair value of the non-marketable equity securities when an impairment indicator is present. The fair value is determined as a result of considering various unobservable inputs which are available to the Company, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in assets and liabilities held by the investees. The Company recognizes impairment of non-marketable equity securities when the fair value is below the carrying amount and the decline in fair value is considered to be other-than-temporary.

Inventories—

Inventories consist mainly of network equipment purchased for resale and work-in-process for construction of network systems. Network equipment purchased for resale is stated at the lower of cost, which is determined by the average-cost method, or net realizable value. Work-in-process for development of network systems is stated at the lower of actual production costs, including overhead cost, or net realizable value. Inventories are reviewed periodically and items considered to be slow-moving or obsolete are written down to their estimated net realizable value.

Leases—

Capital leases are capitalized at the inception of the lease at the present value of the minimum lease payments during the lease term. All other leases are accounted for as operating leases. Lease payments for capital leases are apportioned to interest expense and a reduction of the lease liability to achieve a constant rate of interest on the remaining balance of the liability. Operating lease payments are recognized as expense on a straight-line basis over the lease term.

Sales-Type Leases—

The Company has some sales-type lease agreements with customers. The Company recognizes revenues on sales-type leases when the assets under lease are delivered to and accepted by the customers. The revenue recognized is calculated at the net present value of the future receipt amounts. Interest income in sales-type leases is recognized in other income using the interest method.

Property and Equipment—

Property and equipment are recorded at cost. Depreciation and amortization of property and equipment, including capitalized software and capital leases, are computed principally using the straight-line method based on either the estimated useful lives of the assets or the lease period, whichever is shorter.

The useful lives for depreciation and amortization by major asset classes are as follows:

	Range of Useful Lives (in years)
Data communications, office and other equipment	2	to	20
Buildings		20
Leasehold improvements	4	to	20
Capitalized software	5	to	7
Capital leases	4	to	6

Impairment of Long-Lived Assets—

Long-lived assets consist principally of property and equipment, including those items leased under capital leases and amortized intangible assets. The Company evaluates the impairment of long-lived assets whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group

may

not

be recoverable. Long-lived assets to be held and used are reviewed for impairment by comparing the carrying amount of the asset or asset group with their estimated undiscounted future cash flows. If the cash flows are determined to be less than the carrying amount of the asset or asset group, an impairment loss has occurred and the loss would be recognized during the period for the difference between the carrying amount of the asset or asset group and estimated fair value.

Goodwill and Intangible Assets—

Goodwill and intangible assets that are deemed to have indefinite useful lives are

not

amortized, but are subject to impairment testing. Impairment testing is performed annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company performs annual impairment tests on

March 31.

If the carrying amount of a reporting unit exceeds its fair value, the Company then performs the

second

step of the goodwill impairment test to measure the amount of impairment loss, if any. Intangible assets with finite useful lives, consisting of customer relationships, are amortized using a non-straight-line basis based on the pattern of expected future economic benefit over the estimated useful lives, which range from

10

to

19

years.

Asset Retirement Obligations—

The Company records the fair value of a liability for an asset retirement obligation in the period in which it is incurred. When the liability is initially recorded, the Company capitalizes the related cost by increasing the carrying amount of long-lived asset. Over time, the liability is accreted to its present value each period, and the capitalized cost is depreciated for the period the Company has estimated.

Pension and Severance Indemnities Plans—

The Company has defined benefit pension plans and severance indemnities plans. The cost of the pension plans and severance indemnities plans are accrued based on amounts determined using actuarial methods. In addition, the Company has defined contribution pension plans. The costs of defined contribution pension plans are charged to expenses when incurred.

Income Taxes—

Income tax expense is based on reported earnings before income taxes. Deferred income taxes reflect the impact of temporary differences between assets and liabilities recognized for financial reporting purposes and such amounts recognized for tax purposes and tax loss carryforwards. These deferred taxes are measured using the currently enacted tax rates in effect for the year in which the temporary differences or tax loss carryforwards are expected to reverse. Valuation allowances are provided against deferred tax assets when it is more likely than

not

that a tax benefit will

not

be realized.

The Company recognizes the financial statement effect of uncertain tax positions when it is

not,

based on the technical merits, that the tax positions will be sustained upon examination by the tax authorities. Benefits from tax positions that meet the more-likely-than-

not

recognition threshold are measured at the largest amount of benefit that is greater than

50%

likely of being realized upon settlement. Interest and penalties accrued related to unrecognized tax benefits are included in income tax expense in the consolidated statements of income.

Foreign Currency Translation—

The assets and liabilities of a foreign subsidiary and an equity method investee are translated into Japanese yen at the respective year-end exchange rates. All income and expense accounts are translated at average rates of exchange. The resulting translation adjustments are included in accumulated other comprehensive income (loss).

Foreign currency assets and liabilities are stated at the amount as computed by using year-end exchange rates and the resulting transaction gain or loss is recognized in earnings.

Stock-Based Compensation—

The Company measures and records the compensation cost from stock compensation-type stock options based on fair value. The fair value of the stock option is measured on the date of grant using the Black-Scholes option-pricing model, and amortized over the requisite service period. The compensation cost is mainly included in “General and administrative” expenses.

Research and Development Costs—

Research and development costs are expensed as incurred.

Advertising—

Advertising costs are expensed as incurred and are recorded in “Sales and marketing.”

Basic and Diluted Net Income Attributable to Internet Initiative Japan Inc. per Common Share—

Basic net income attributable to Internet Initiative Japan Inc. per common share is computed by dividing net income attributable to Internet Initiative Japan Inc. by the weighted-average number of shares of common stock outstanding during the year. Diluted net income attributable to Internet Initiative Japan Inc. per common share reflects the potential dilutive effect of stock options.

Other Comprehensive Income (Loss)—

Other comprehensive income (loss) consists of translation adjustments resulting from the translation of financial statements of a foreign subsidiary, unrealized gains or losses on available-for-sale securities and defined benefit pension plan adjustments.

Segment Reporting—

ASC

280,

“Segment Reporting”, establishes standards for reporting information about operating segments. Operating segments are defined as components of an enterprise that engage in business activities from which it

may

earn revenues and incur expense and for which separate financial information is available that is evaluated regularly by the chief operation decision-maker in deciding how to allocate resources and in assessing performance.

The Company provides a comprehensive range of network solutions to meet its customers’ needs by cross-selling a variety of services, including Internet connectivity services, WAN services, outsourcing services, systems integration and sales of network-related equipment, and ATM operation services. The Company’s chief operating decision-maker, who is the Company’s Chief Operating Officer ("COO"), regularly reviews the revenue and cost of sales of the Company’s

two

operating segments the Network service and systems integration business segment and the ATM operation business segment. The COO also makes decisions regarding how to allocate resources and assess performance based on these segments.

New Accounting Guidance

In

July 2015,

the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

2015

-

11,

“Inventory (Topic

330

): Simplifying the Measurement of Inventory,” which applies to inventory that is measured using the

first

-in,

first

-out method (“FIFO”) or average cost methods. Under the updated guidance, an entity should measure inventory within the scope of the guidance at the lower of cost or net realizable value, which is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using the last-in,

first

-out method (“LIFO”). This ASU is effective for annual and interim periods beginning after

December 15, 2016

and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Company adopted this ASU in the

first

quarter beginning

April 1, 2017.

The adoption of this ASU did

not

have a material impact on the Company’s financial position or results of operations.

In

November 2015,

the FASB issued ASU

2015

-

17,

“Balance Sheet Classification of Deferred Taxes (Topic

740

)” which changes how deferred taxes are classified on our balance sheets. This ASU requires all deferred tax assets and liabilities to be classified as non-current. This ASU is effective for annual and interim periods beginning after

December 15. 2016,

with early adoption permitted. The Company adopted this ASU in the

first

quarter beginning

April 1, 2017

with prospective application. Prior periods were

not

retrospectively adjusted. Current deferred tax assets and liabilities included in the consolidated balance sheets as of

March 31, 2017

are

¥1,298,469

thousand and

¥108,994

thousand, respectively.

Accounting Guidance Issued But

Not

Adopted as of

March 31, 2018

In

May 2014,

the FASB issued ASU

2014

-

09,

“Revenue from Contracts with Customers (Topic

606

),” to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. This guidance also requires an entity to improve disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

ASU

2015

-

14,

“Revenue from Contracts with Customers: Deferral of the Effective Date,” which was issued in

August 2015,

revised the effective date for ASU

2014

-

09

to annual and interim periods beginning after

December 15, 2017,

with early adoption permitted, but

not

earlier than the original effective date of annual and interim periods beginning after

December 15, 2016,

for public entities.

In

March 2016,

the FASB issued ASU

2016

-

08,

"Revenue from Contracts with Customers (Topic

606

): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)," which is an amendment to ASU

2014

-

09

on assessing whether an entity is a principal or an agent in a revenue transaction. This amendment addresses implementation issues that were discussed by the Revenue Recognition Transition Resource Group ("TRG") to clarify the principal versus agent assessment and provide for a more consistent application. This new standard has the same effective date and transition requirements as ASU

2014

-

09.

The guidance permits

two

methods of adoption. The Company currently plans to adopt the standard using the “modified retrospective method.” Under that method, the Company will apply the rules to all contracts existing as of

April 1, 2018,

recognizing in beginning retained earnings an adjustment for the cumulative effect of the change and providing additional disclosures comparing results to previous accounting standards.

The Company expects revenue recognition for its broad portfolio of hardware, software and services to remain largely unchanged. However, the guidance is expected to change the allocation of contract revenues between various services and equipment and the timing of revenue recognition for certain nonrefundable upfront fees.

Although the Company expenses sales commissions as incurred, the requirements in the new standard to capitalize certain in-scope sales commissions will

not

result in a significant change to the Company’s results. However, the requirement to defer such incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of a deferred charge on the Company’s balance sheets.

The Company is in the process of finalizing the assessment of the impact of adopting this guidance and expects that the adoption will

not

have a material impact on the Company’s results of operations and financial position.

In

January 2016,

the FASB issued ASU

2016

-

01,

"Financial Instruments - Overall (Subtopic

825

-

10

): Recognition and Measurement of Financial Assets and Financial Liabilities," which amends the guidance in U.S. GAAP on the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, the ASU clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The new standard is effective for fiscal years and interim periods beginning after

December 15, 2017,

and upon adoption, an entity should apply the amendments by means of a cumulative effect adjustment to the balance sheet at the beginning of the

first

reporting period in which the guidance is effective. Early adoption is

not

permitted, except for the provision to record fair value changes for financial liabilities under the fair value option resulting from instrument-specific credit risk in other comprehensive income. The Company anticipates that the adoption of this guidance will increase the volatility of the Company’s other income (expenses), resulting from the remeasurement of the Company’s equity securities.

In

February 2016,

the FASB issued ASU

2016

-

02,

"Leases (Topic

842

)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognizes assets and liabilities for leases with lease terms of more than

twelve

months and the recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases.

Lessor accounting remains largely unchanged from current U.S. GAAP, but does contain some targeted improvements to align with ASU

2014

-

09.

ASU

2016

-

02

is effective for fiscal years and interim periods within those fiscal years, beginning after

December 15, 2018,

using a modified retrospective approach, and early adoption is permitted. The Company is currently evaluating the impact of adopting this guidance.

In

August 2016,

the FASB issued ASU

2016

-

15,

"Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments," which addresses the diversity of practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows with respect to

eight

specific cash flow issues. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after

December 15, 2017.

The Company is currently evaluating the impact of adopting this guidance.

XML

Note 2 - Business Combination and Transfer

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Business Combination Disclosure [Text Block]

2. BUSINESS COMBINATION AND TRANSFER

There were

no

business acquisitions during the years ended

March 31, 2016,

March 31, 2017

and

March 31, 2018.

On

December 31, 2017,

the Company sold all of the shares of hi-ho, which provided Internet connectivity services for consumers, to a

third

party. Hi-ho was included in the network service and systems integration business segment. The Company recognized a gain on the sale of

¥44,877

thousand, in addition, goodwill and trademark decreased by

¥87,137

thousand and

¥15,000

thousand, respectively, for the year ended

March 31, 2018.

The gain on the sale was recorded in “General and administrative” expenses in the Company's consolidated statements of income.

XML

Note 3 - Inventories

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

3. INVENTORIES

The components of inventories as of

March 31, 2017

and

2018

are as follows:

	Thousands of Yen
	2017		2018
Network equipment purchased for resale	¥	1,093,001	¥	1,053,574
Work in process		1,705,053		660,973
Total inventories	¥	2,798,054	¥	1,714,547

XML

Note 4 - Other Investments

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4. OTHER INVESTMENTS

Pursuant to ASC

320,

“Investments

―

Debt and Equity Securities,” all of the Company's marketable equity and debt securities are classified as available-for-sale securities. Information regarding the securities classified as available-for-sale at

March 31, 2017

and

2018

is as follows:

	Thousands of Yen
March 31, 2017	Cost		Unrealized Gains		Unrealized Losses		Fair Value
Available-for-sale—Equity securities	¥	1,789,471	¥	3,880,414	¥	375	¥	5,669,510
Available-for-sale—Debt securities		100,300		10,530		-		110,830
	¥	1,889,771	¥	3,890,944	¥	375	¥	5,780,340
March 31, 2018
Available-for-sale—Equity securities	¥	1,651,181	¥	7,525,556	¥	699	¥	9,176,038
Available-for-sale—Debt securities		100,300		11,870		-		112,170
	¥	1,751,481	¥	7,537,426	¥	699	¥	9,288,208

Maturities of available-for-sale debt securities are due after

10

years.

The following table provides the fair value and gross unrealized losses of the Company's investments, which have been deemed to be temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of

March 31, 2017

and

2018:

	Thousands of Yen
	Less than 12 Months				12 Months or More				Total
March 31, 2017	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Available-for-sale—Equity securities	¥	816	¥	5	¥	3,398	¥	370	¥	4,214	¥	375
March 31, 2018
Available-for-sale—Equity securities	¥	17,519	¥	699		-		-	¥	17,519	¥	699

The Company regularly reviews all of the Company's investments to determine if any are other-than-temporarily impaired. The analysis includes reviewing industry analyst reports, sector credit ratings and volatility of the security's market price.

The Company’s unrealized loss on investments in marketable equity securities as of

March 31, 2018

relates to Japanese companies (

3

issuers) in the financial, heavy and shipping industries. The fair value of each investment is between

2.8%

and

8.6%

less than its cost. The duration of the unrealized loss position was less than

2

months. The Company evaluated the near-term prospects of the issuers and the analyst reports in relation to the severity and duration of impairment. Based on that evaluation and the Company’s ability and intent to hold the investments for a reasonable period of time sufficient to recover the unrealized loss, the Company does

not

consider the investments to be other-than-temporarily impaired at

March 31, 2018.

Proceeds from the sale of available-for-sale securities were

¥141,235

thousand and

¥4,840

thousand and

¥1,206,516

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively. Gross realized gains of

¥2,708

thousand and

¥1,068,303

thousand were included in "Other income (expenses)" for the years ended

March 31, 2017

and

2018,

respectively.

The aggregate cost of the Company’s cost method investments totaled

¥2,144,574

thousand and

¥2,086,234

thousand at

March 31, 2017

and

2018,

respectively.

Impairment of investments in certain marketable equity securities and nonmarketable equity securities, including funds, included in "Other income (expenses)" in the Company’s consolidated statements of income, were recognized to reflect the decline in value considered to be other-than-temporary. The Company recognized impairment loss

¥30,554

thousand on marketable equity securities for the year ended

March 31, 2017,

and

¥109,840

thousand on nonmarketable equity securities for the year ended

March 31, 2018.

XML

Note 5 - Allowance for Doubtful Accounts and Loans

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Allowance for Credit Losses [Text Block]

5. ALLOWANCE FOR DOUBTFUL ACCOUNTS AND LOANS

The analysis of the allowance for doubtful accounts and loans for the years ended

March 31, 2016,

2017

and

2018

is as follows:

	Thousands of Yen
	Balance at Beginning of Year		Credits Charged Off			Provision for Doubtful Accounts		Other			Balance at End of Year
Year ended March 31, 2016	¥	148,245	¥	(45,108	)	¥	48,407	¥	(29	)	¥	151,515
Year ended March 31, 2017	¥	151,515	¥	(34,978	)	¥	68,300	¥	(84	)	¥	184,753
Year ended March 31, 2018	¥	184,753	¥	(94,521	)	¥	94,839	¥	31		¥	185,102

XML

Note 6 - Investments in Equity Method Investees

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Equity Method Investments and Joint Ventures Disclosure [Text Block]

6. INVESTMENTS IN EQUITY METHOD INVESTEES

IIJ utilizes various companies in Japan to develop and operate its Internet business. Businesses operated by its equity method investees include multifeed technology services and location facilities for connecting high-speed Internet backbones (Internet Multifeed Co., “Multifeed”), comprehensive portal site operations (Internet Revolution Inc., “i-revo”), point management systems operations (Trinity Inc., “Trinity”), cloud-based systems that undergird smartphone applications (Appiaries Corporation, “Appiaries”), cloud computing services in Indonesia (PT. BIZNET GIO NUSANTARA, “BIZNET”), system development and consulting in medical and healthcare business (KIS Inc., “KIS”), cloud computing services in Thailand (Leap Solutions Asia Co., Ltd., “Leap Solutions”), content delivery network services (JOCDN Inc., “JOCDN” ) and financial services for cryptocurrencies exchange and settlement (DeCurret Inc., “DeCurret” ).

The aggregate amounts of balances and transactions of the Company with these equity method investees as of

March 31, 2017

and

2018,

and for each of the

three

years in the period ended

March 31, 2018

are summarized as follows:

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	150,755	¥	183,023
Accounts payable		-		50,733		98,306
Revenues	¥	666,554		683,332		863,818
Costs and expenses		502,340		527,431		1,107,344

Dividends from the equity method investees for the years ended

March 

31,

2016,

2017

and

2018

were

¥48,510

 thousand,

¥51,083

 thousand and

¥51,191

 thousand, respectively.

The Company's investments in these equity method investees and its ownership percentage in each at

March 31, 2017

and

2018

consisted of the following:

	Thousands of Yen
	2017					2018
Multifeed		34.00	%	¥	1,642,171		34.00	%	¥	1,806,472
i-revo		30.00			751,784		30.00			767,197
Trinity		33.75			183,403		33.75			227,470
Appiaries		49.00			16,409		-			-
BIZNET		40.00			182,514		40.00			249,840
KIS		39.30			55,627		39.30			59,467
Leap Solutions		40.00			227,430		40.00			201,448
JOCDN		50.00			90,837		20.00			132,270
DeCurret		-			-		35.00			1,802,149
Total				¥	3,150,175				¥	5,246,313

The Company sold all of its shares in Appiaries for

¥1,615

thousand in

December 2017

and acquired shares in DeCurret for

¥1,830,000

thousand in

February 2018.

The balance of equity method goodwill was

¥7,197

thousand as of

March 31, 2017

and

2018,

and was included in “Investments in equity method investees” in the Company’s consolidated balance sheets.

XML

Note 7 - Property and Equipment

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

7. PROPERTY AND EQUIPMENT

Property and equipment as of

March 31, 2017

and

2018

consisted of the following:

	Thousands of Yen
	2017			2018
Data communications equipment	¥	15,013,565		¥	18,544,180
Office and other equipment		2,875,548			2,522,740
Land		537,889			2,038,726
Buildings		1,663,326			2,151,069
Leasehold improvements		4,061,909			4,182,013
Capitalized software		33,335,560			36,624,979
Assets under capital leases, primarily data communications equipment		32,854,630			35,821,498
Total		90,342,427			101,885,205
Less accumulated depreciation and amortization		(50,566,983	)		(55,470,955	)
Property and equipment—net	¥	39,775,444		¥	46,414,250

Depreciation and amortization expenses for property and equipment amounted to

¥9,533,541

thousand,

¥10,513,162

thousand and

¥11,999,414

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively.

The Company recorded net losses on sales or disposal of property and equipment of

¥27,950

thousand,

¥139,162

thousand and

¥99,953

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively, in “General and administrative” expenses in the Company’s consolidated statements of income.

The accumulated amortization for capitalized software was

¥20,882,937

thousand and

¥22,072,049

thousand as of

March 31, 2017

and

2018,

respectively. The amortization expenses for capitalized software amounted to

¥2,894,740

thousand and

¥3,348,188

thousand for the years ended

March 31, 2017

and

2018,

respectively. The weighted-average amortization period for capitalized software is approximately

6.0

years. The estimated aggregate amortization expense of capitalized software for each of the next

five

years is as follows:

Year Ending March 31	Thousands of Yen
2019	¥	3,689,048
2020		3,323,134
2021		2,744,928
2022		2,246,229
2023		1,275,916

XML

Note 8 - Goodwill and Other Intangible Assets

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

8. GOODWILL AND OTHER INTANGIBLE ASSETS

The components of intangible assets as of

March 31, 2017

and

2018

are as follows:

	Thousands of Yen
	2017			2018
Intangible assets subject to amortization:
Customer relationships	¥	6,424,471		¥	6,175,193
Total		6,424,471			6,175,193
Less accumulated amortization
Customer relationships		(3,388,053	)		(3,504,234	)
Total		(3,388,053	)		(3,504,234	)
Intangible assets subject to amortization—net		3,036,418			2,670,959
Intangible assets not subject to amortization:
Telephone rights		35,599			33,709
Trademark		15,000			-
Goodwill		6,169,609			6,082,472
Total		6,220,208			6,116,181
Total intangible assets	¥	9,256,626		¥	8,787,140

The amortization expenses for the years ended

March 31, 2017

and

2018

were

¥380,495

thousand and

¥365,459

thousand, respectively. The estimated aggregate amortization expense of intangible assets for each of the next

five

years is as follows:

Year Ending March 31	Thousands of Yen
2019	¥	355,410
2020		346,223
2021		336,787
2022		327,101
2023		318,665

The Company recorded

¥81,000

thousand of loss on impairment of the trademark related to hi-ho in “

General and administrative

” expenses in the Company’s consolidated statement of income for the year ended

March 31, 2017.

Because of the recent decrease in revenues of hi-ho, the Company recognized that the trademark might be impaired. The carrying value of the trademark exceeded its fair value and the impairment loss was recognized in an amount equal to the excess of the carrying amount of the trademark over the fair value of the trademark. The fair value of the trademark was calculated using the relief-from-royalty method. The amount of loss was included in the network service and system integration business segment.

The decreases of the customer relationships, trademark and goodwill for the year ended

March 31, 2018

were related to the sale of subsidiary shares of hi-ho. Refer to Note

2,

“BUSINESS COMBINATION AND TRANSFER”.

The following table shows changes in the carrying amount of goodwill for the years ended

March 31, 2017

and

2018,

by operating segment:

	Thousands of Yen
	Network Service and Systems Integration Business			ATM Operation Business		Total
Balance at March 31, 2016
Goodwill	¥	6,054,340		¥	235,551	¥	6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Balance at March 31, 2017
Goodwill		6,054,340			235,551		6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Sale		(87,137	)		-		(87,137	)
Balance at March 31, 2018
Goodwill		5,967,203			235,551		6,202,754
Accumulated impairment losses		(120,282	)		-		(120,282	)
	¥	5,846,921		¥	235,551	¥	6,082,472

No

impairment of goodwill was recognized during the years ended

March 31, 2016,

2017

and

2018.

XML

Note 9 - Leases

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Leases of Lessee Disclosure [Text Block]

9. LEASES

The Company enters into, in the normal course of business, various leases for domestic and international backbone services, office premises, network operation centers and data communications and other equipment. Certain leases that meet

one

or more of the criteria set forth in the provision of ASC

840,

“Leases”, have been classified as capital leases and the others have been classified as operating leases.

A portion of the Company’s sales result from multi-year lease agreements under which the Company leased some network equipment to customers. The leases are classified as sale-type leases which the Company accounts for in accordance with ASC

840.

Operating Leases—

The Company has operating lease agreements with telecommunications carriers and others for the use of connectivity lines, including local access lines that customers use to connect to IIJ's network. The leases for domestic and international backbone connectivity are generally non-cancelable for a minimum

one

-year lease period. The Company also leases its office premises, for which refundable lease deposits are capitalized as guarantee deposits, certain office equipment under non-cancelable operating leases, and its network operation centers under non-cancelable operating leases which expire on various dates through

2023.

Refundable guarantee deposits as of

March 31, 2017

and

2018

consist of the following:

	Thousands of Yen
	2017		2018
Head office	¥	2,462,266	¥	2,745,034
Sales and subsidiaries offices		518,759		597,798
Others		79,340		79,611
Total refundable guarantee deposits	¥	3,060,365	¥	3,422,443

Lease expenses related to backbone lines for the years ended

March 31, 2016,

2017

and

2018

amounted to

¥3,638,063

 thousand,

¥3,421,807

thousand and

¥3,318,831

thousand, respectively. Lease expenses for local access lines for the years ended

March 31, 2016,

2017

and

2018,

which are mainly attributable to Internet connectivity services and WAN services, amounted to

¥23,035,615

 thousand,

¥24,759,611

 thousand and

¥27,604,950

thousand, respectively. Other lease expenses for the years ended

March 31, 2016,

2017

and

2018

amounted to

¥6,880,307

 thousand,

¥7,082,157

thousand and

¥7,613,522

thousand, respectively.

The Company has subleased a part of its office premises. Lease expenses mentioned above have been reduced by sublease revenues totaling

¥41,002

thousand,

¥52,928

thousand and

¥54,385

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively.

Capital Leases—

The Company conducts its connectivity and other services by using data communications and other equipment leased under capital lease arrangements.

The Company sold ATM and data communications equipment procured from

third

-party vendors, which amounted to

¥3,635,690

thousand and

¥3,197,334

thousand, to the leasing companies for the years ended

March 31, 2017

and

2018,

respectively, and concurrently entered into capital lease arrangements to lease the equipment back, which resulted in total lease payments of

¥3,554,784

thousand due by

March 2022

and

¥3,118,075

thousand due by

March 2023,

related to the lease contracts made in the years ended

March 31, 2017

and

2018,

respectively.

The fair values of the assets upon execution of the capital lease arrangements and accumulated depreciation amounted to

¥32,854,630

 thousand and

¥19,735,367

 thousand, respectively, at

March 31, 2017

and

¥35,821,498

thousand and

¥21,251,673

thousand, respectively, at

March 31, 2018.

Lessee Future Minimum Lease Payments—

As of

March 31, 2018,

the future lease payments under non-cancelable operating leases, including the aforementioned non-cancelable connectivity lease agreements and capital leases were as follows:

	Thousands of Yen
	Connectivity Lines Operating Leases		Other Operating Leases		Capital Leases
Year ending March 31:
2019	¥	585,818	¥	3,466,849	¥	5,884,743
2020		240,242		1,328,020		4,887,319
2021		22,510		361,100		3,743,032
2022		-		195,812		2,035,721
2023		-		169,144		504,935
2024 and thereafter		-		120,642		-
Total minimum lease payments	¥	848,570	¥	5,641,567		17,055,750
Less amounts representing interest						(479,149	)
Present value of net minimum capital lease payments						16,576,601
Less current portion						(5,655,875	)
Noncurrent portion					¥	10,920,726

Sales-Type Leases—

The components of the net investment in sales-type leases as of

March 31, 2017

and

2018

were as follows:

	Thousands of Yen
	2017			2018
Year ending March 31:
2019				¥	818,208
2020					552,597
2021					503,456
2022					468,715
2023					45,767
Total minimum lease payments to be received*	¥	2,939,252		¥	2,388,743
Estimated residual value of leased property (unguaranteed)		-			-
Less unearned income		(66,934	)		(46,152	)
Net investment in sales-type leases		2,872,318			2,342,591
Less current portion		(824,636	)		(797,298	)
Non-current net investment in sales-type leases	¥	2,047,682		¥	1,545,293

*Estimated executory costs, including profit thereon, of

¥645,166

thousand and

¥1,515,645

thousand were excluded from the total minimum lease payments to be received as of

March 31, 2017

and

2018,

respectively.

XML

Note 10 - Asset Retirement Obligations

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Asset Retirement Obligation Disclosure [Text Block]

10. ASSET RETIREMENT OBLIGATIONS

The asset retirement obligations are principally related to leasehold office premises and a data center which, at the end of the lease, the Company is contractually obligated to restore.

The movements in asset retirement obligations for the years ended

March 31, 2017

and

2018

were as follows:

	Thousands of Yen
	2017		2018
Balance at beginning of the year	¥	595,183	¥	639,494
Liabilities incurred		31,980		49,609
Liabilities settled		-		(7,608	)
Accretion expense		12,331		12,714
Balance at end of the year	¥	639,494	¥	694,209

XML

Note 11 - Borrowings

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Debt Disclosure [Text Block]

11. BORROWINGS

Short-term borrowings at

March 31, 2017

and

2018

consisted of bank overdrafts that bear fixed rate interest. The weighted-average rates at

March 31, 2017

and

2018

were

0.400%

and

0.411%,

respectively.

Long-term borrowings as of

March 31, 2017

and

2018

consist of the following:

	Thousands of Yen
	2017		2018
Long-term installment payable at various dates through calendar 2024; interest payable at fixed rates; the weighted-average rates were 0.438% and 0.488% at March 31, 2017 and 2018, respectively.	¥	8,500,000	¥	15,500,000
Less current portion		-		-
Long-term borrowings, less current portion	¥	8,500,000	¥	15,500,000

Annual maturities of long-term borrowing for the years subsequent to

March 31, 2018

are as follows:

	Thousands of Yen
Year ending March 31:
2020	¥	1,500,000
2021		1,830,000
2022		5,170,000
2023		1,500,000
2024		2,000,000
2025		3,500,000
Total	¥	15,500,000

Substantially all short-term and long-term bank borrowings are made under agreements which, as is customary in Japan, provide that under certain conditions the bank

may

require the borrower to provide collateral (or additional collateral) or a guarantor with respect to the borrowings and that the bank

may

treat any collateral, whether furnished as security for short-term or long-term loans or otherwise, as collateral for all indebtedness to such bank. Also, provisions of certain loan agreements grant certain rights of possession to the lenders in the event of default. The Company did

not

provide banks with any collateral for outstanding loans as of

March 31, 2018.

The Company entered into bank overdraft agreements with certain Japanese banks for which the unused balance outstanding as of

March 31, 2018

was

¥10,450,000

thousand.

A long-term account payable relating to a purchase of a software license is included in “OTHER NONCURRENT LIABILITIES” for

¥1,468,183

thousand and

¥896,810

thousand as of

March 31, 2017

and

March 31, 2018,

respectively, and the repayment is based on the usage of the license. The payable bears interest at the fixed rate of

0.5%

per annum. All of the outstanding balance will become due by

December 31, 2019.

XML

Note 12 - Income Taxes

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Income Tax Disclosure [Text Block]

12. INCOME TAXES

Income taxes imposed by the national, prefectural and municipal governments of Japan resulted in a normal statutory rate of approximately

33.5%

for the year ended

March 31, 2016

and

31.7%

for the years ended

March 31, 2017

and

2018.

Income from operations before income tax expense and equity in net income of equity method investees and income tax expense for the years ended

March 31, 2016,

2017

and

2018

consist of the following components:

	Thousands of Yen
	2016			2017			2018
Income from operations before income tax expense and equity in net income of equity method investees:
Domestic	¥	6,460,898		¥	5,503,750		¥	7,732,535
Foreign		(267,564	)		(76,590	)		107,588
Total	¥	6,193,334		¥	5,427,160		¥	7,840,123
Income taxes ― current:
Domestic	¥	1,929,139		¥	2,307,523		¥	2,986,077
Foreign		5,277			11,700			22,695
Total	¥	1,934,416		¥	2,319,223		¥	3,008,772
Income taxes ― deferred:
Domestic	¥	255,992		¥	(95,638	)	¥	(301,900	)
Foreign		(6,877	)		1,295			(11,033	)
Total	¥	249,115		¥	(94,343	)	¥	(312,933	)

IIJ and domestic subsidiaries adopted the consolidated tax declaration since the fiscal year ended

March 31, 2009.

On

March 31, 2016,

new amendments to Japanese tax regulations were enacted into law. As a result, the normal Japanese statutory rate was reduced to

31.7%

from the fiscal year beginning

April 1, 2016,

31.1%

from the fiscal year beginning

April 1, 2017

and

30.9%

from the fiscal year beginning

April 1, 2018.

On

June 15, 2016,

amendments to Japanese local tax regulations were enacted into law. As a result, the normal Japanese statutory rate was increased to

31.7%

from the fiscal year beginning

April 1, 2017

and reduced to

31.5%

from the fiscal year beginning

April 1, 2018.

The effect of the changes in the tax rates on the balance of deferred tax assets and liabilities was an increase in income tax expense of

¥23,183

thousand and

¥7,954

thousand for the years ended

March 31, 2016

and

2017,

respectively.

On

December 22, 2017,

the Tax Cuts and Jobs Act of

2017

was enacted in the

United States of America. As a result,

the federal corporate income tax rate

was reduced from

35%

to

21%

from the fiscal year beginning

January 1, 2018.

The effect of the change in the tax rate on the balance of deferred tax assets and liabilities was a decrease in income tax expense of

¥26,485

thousand for the years ended

March 31, 2018.

The approximate effect of temporary differences and carryforwards giving rise to deferred tax balances at

March 31, 2017

and

2018

was as follows:

	Thousands of Yen
	2017					2018
	Deferred Tax Assets			Deferred Tax Liabilities		Deferred Tax Assets			Deferred Tax Liabilities
Unrealized gains on available-for-sale securities		-		¥	1,222,283		-		¥	2,370,327
Capital leases	¥	158,928			-	¥	181,494			-
Accrued expenses		877,107			-		902,787			-
Retirement and pension cost		1,107,885			-		1,168,895			-
Allowance for doubtful accounts		68,530			-		69,004			-
Depreciation		299,956			-		458,099			-
Net loss on other investments		172,942			-		162,991			-
Net operating loss carryforwards		636,012			-		459,402			-
Transactions in transit*		-			98,308		-			60,451
Impairment loss on telephone rights		68,405			-		68,632			-
Accrued enterprise tax		139,050			-		189,460			-
Asset retirement obligation		201,441			-		218,675			-
Deferred revenue		363,765			-		302,654			-
Customer relationships		-			957,202		-			841,351
Tax deduction of goodwill		-			805,738		-			760,281
Trademark		-			4,725		-			-
Investments in equity method investees		-			324,528		-			420,121
Investments in funds		89,732			-		95,336			-
Asset retirement cost		-			148,261		-			149,833
Other		336,429			93,374		400,543			147,477
Total		4,520,182			3,654,419		4,677,972			4,749,841
Valuation allowance		(559,567	)		-		(433,110	)		-
Total	¥	3,960,615		¥	3,654,419	¥	4,244,862		¥	4,749,841

*This item arises from transactions between IIJ and foreign subsidiaries, which were recorded in the different periods as a result of the difference in each company’s fiscal year-end.

As of

March 31, 2017

and

2018,

the valuation allowance for deferred tax assets related principally to operating loss carryforwards at amounts which are

not

considered more likely than

not

to be realized. The net changes in the valuation allowance for deferred tax assets were an increase of

¥15,696

thousand, a decrease of

¥68,126

 thousand and a decrease of

¥126,457

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively.

Undistributed earnings of foreign subsidiaries that are deemed to be permanently invested amounted to

¥839,047

thousand as of

March 31, 2018.

It is

not

practicable to calculate the unrecognized deferred tax liability on such undistributed earnings.

As of

March 31, 2018,

certain subsidiaries

not

subject to consolidation tax filing had tax operating loss carryforwards, which were composed of

¥706,943

thousand in the United States of America and

¥1,180,169

thousand in other countries. These net operating loss carryforwards are available to offset against future taxable income. The net operating loss carryforwards in the United States of America will expire in the period ending from

December 31, 2021

to

2037.

With the exception of

¥251,000

thousand with

no

expiration period, the net operating loss carryforwards in other countries will expire in the period ending from

December 31, 2018

to

2022.

A reconciliation between the amount of reported income taxes and the amount of income taxes computed using the normal statutory rate for each of the

three

years in the period ended

March 31, 2018

is as follows:

	Thousands of Yen
	2016			2017			2018
Amount computed by using normal Japanese statutory tax rate	¥	2,074,767		¥	1,720,410		¥	2,485,319
Increase (decrease) in taxes resulting from:
Expenses not deductible for tax purpose		93,262			88,633			98,905
Inhabitant tax—per capita		39,538			46,822			38,161
Change in valuation allowance		15,696			(68,126	)		(21,173	)
Tax effects on investments in equity method investees		48,368			34,549			40,218
Enterprise tax—not based on income		146,883			268,545			257,203
Tax rate change		23,183			7,954			(26,485	)
Tax credit		(269,145	)		5,000			(164,525	)
Other—net		10,979			121,093			(11,784	)
Income tax expense as reported	¥	2,183,531		¥	2,224,880		¥	2,695,839

There was

no

unrecognized tax benefit for the years ended

March 31, 2017

and

2018.

The Company does

not

reasonably expect that the unrecognized tax benefit will change significantly within the next

twelve

months.

The Company has open tax years subject to examination by major tax jurisdictions from the year ended

March 31, 2017

in Japan and from the year ended

December 31, 2006

in the United States of America.

Tax credit in the year ended

March 31, 2017

included an adjustment of tax credit from the year ended

March 31, 2016

amounting to

¥125,234

thousand.

XML

Note 13 - Retirement and Pension Plans

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Pension and Other Postretirement Benefits Disclosure [Text Block]

13. RETIREMENT AND PENSION PLANS

IIJ and certain subsidiaries have unfunded severance benefits, noncontributory defined benefit pensions and defined contribution plans which together cover substantially all of their employees who are

not

directors. The defined benefit pension plan is operated under the Defined Benefit Corporate Pension Law.

The following information regarding net periodic pension cost and accrued pension cost also includes the unfunded severance benefit plans. Under the severance and defined benefit pension plans, all of IIJ and IIJ-Global’s employees are entitled, upon retirement with

20

years or more of service, to a

10

-year period of annuity payments from age

60

(or lump-sum severance indemnities) based on the rate of pay at the time of retirement, length of service and certain other factors. IIJ and IIJ-Global's employees who do

not

meet these conditions are entitled to lump-sum severance indemnities. 

Net periodic pension cost for the years ended

March 31, 2016,

2017

and

2018

included the following components:

	Thousands of Yen
	2016			2017			2018
Service cost	¥	648,944		¥	737,290		¥	769,172
Interest cost		67,525			43,988			59,946
Expected return on plan assets		(87,909	)		(92,623	)		(105,419	)
Amortization of transition obligation		365			-			-
Amortization of actuarial loss (gain)		(2,971	)		24,584			5,489
Net periodic pension cost	¥	625,954		¥	713,239		¥	729,188

Other changes in plan assets and benefit obligations recognized in other comprehensive income for the years ended

March 31, 2016,

2017

and

2018

are as follows:

	Thousands of Yen
	2016			2017			2018
Net actuarial loss (gain)	¥	585,332		¥	(276,702	)	¥	(44,710	)
Amortization of transition obligation in net periodic pension cost		(365	)		-			-
Amortization of actuarial loss (gain)		2,971			(24,584	)		(5,489	)
Amounts recognized in other comprehensive income	¥	587,938		¥	(301,286	)	¥	(50,199	)
Total net periodic pension cost and amounts recognized in other comprehensive income	¥	1,213,892		¥	411,953		¥	678,989

The change in benefit obligation and plan assets for the years ended

March 31, 2017

and

2018

and the amounts recognized in the consolidated balance sheets as of

March 31, 2017

and

2018

are as follows:

	Thousands of Yen
	2017			2018
Change in benefit obligation:
Benefit obligation at beginning of year	¥	6,388,110		¥	6,777,223
Service cost		737,290			769,172
Interest cost		43,988			59,946
Actuarial gain		(263,016	)		(14,234	)
Benefit paid		(129,149	)		(146,715	)
Benefit obligation at end of year		6,777,223			7,445,392
Change in plan assets:
Fair value of plan assets at beginning of year		3,193,899			3,635,159
Actual return on plan assets		106,310			135,893
Employer contribution		404,795			432,459
Benefits paid		(69,845	)		(74,744	)
Fair value of plan assets at end of year		3,635,159			4,128,767
Funded status at end of year	¥	(3,142,064	)	¥	(3,316,625	)

Amounts recognized in the consolidated balance sheets as of

March 31, 2017

and

2018

consist of:

	Thousands of Yen
	2017			2018
Accrued retirement and pension costs	¥	(3,142,064	)	¥	(3,316,625	)
Net amount recognized	¥	(3,142,064	)	¥	(3,316,625	)

The accumulated benefit obligation for the Company’s defined benefit pension plans as of

March 31, 2017

and

2018

was

¥4,411,815

thousand and

¥4,979,785

thousand, respectively.

The aggregate projected benefit obligation and aggregate fair value of plan assets for plans with projected benefit obligations in excess of plan assets were

¥6,777,223

thousand and

¥3,635,159

thousand, respectively, at

March 31, 2017

and

¥7,445,392

thousand and

¥4,128,767

thousand, respectively, at

March 31, 2018,

respectively. The aggregate accumulated benefit obligations of plans with

no

plan assets were

¥116,408

thousand and

¥131,049

thousand at

March 31, 2017

and

2018,

respectively.

Amounts recognized in accumulated other comprehensive income at

March 31, 2017

and

2018

consist of:

	Thousands of Yen
	2017		2018
Net actuarial loss	¥	658,139	¥	607,939
Total	¥	658,139	¥	607,939

The estimated net actuarial loss for the defined benefit pension plans that will be amortized from accumulated other comprehensive income into net periodic pension cost in the fiscal year ending

March 31, 2019

is

¥2,460

thousand.

Weighted-average actuarial assumptions as of

March 31

were as follows:

	Benefit Obligations						Net Periodic Costs
	2017			2018			2016			2017			2018
Discount rate		0.9	%		0.8	%		1.3	%		0.7	%		0.9	%
Expected long-term rate of return on plan assets								3.0			2.9			2.9
Rate of increase in compensation		3.1			3.0			3.2			3.1			3.1

The Company sets the discount rate assumption annually at

March 31

based on high-quality fixed income securities reflecting the estimated timing of benefit payments. 

The basis for determining the long-term rate of returns is a combination of historical returns and prospective return assumptions derived from pension trust funds’ managing company.

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid.

Years Ending March 31	Thousands of Yen
2019	¥	126,065
2020		144,733
2021		194,204
2022		270,389
2023		274,262
2024 - 2028		1,839,614
Total	¥	2,849,267

The Company expects to contribute

¥432,460

thousand to its defined benefit pension plan in the year ending

March 31, 2019.

The Company’s defined contribution plan, which was established on

April 1, 2009,

covers substantially all its employees. The Company contributes

1.6%

of its employees’ base salaries to the plan on a monthly basis.

No

employee contributions to the plan are allowed. Contributions to the plan were

¥138,372

thousand,

¥146,975

thousand and

¥154,681

thousand for the years ended

March 31, 2016,

2017

and

2018,

respectively.

The Company's funding policies with respect to the noncontributory plan are generally to contribute amounts considered tax deductible under applicable income tax regulations. Plan assets, including life insurance pooled investment portfolios, consist of Japanese and U.S. government bonds, other debt securities and marketable equity securities.

Life insurance pooled investment portfolios are managed by an insurance company and guarantee a minimum rate of return.

The Company’s investment strategy for the plan assets is to manage the assets in order to pay retirement benefits to plan participants from the Company over the life of the plans.

This is accomplished by identifying and managing the exposure to various market risks, and diversifying investments in various asset classes based on a portfolio determined by the insurance company in order to maximize long-term rate of return, while considering the liquidity needs of the plans.

The plan is permitted to use derivative instruments only for the purpose of hedging. Both margin trading and real estate investments are prohibited in principle.

The Company mitigates the credit risk of investments by establishing guidelines with the insurance company. These guidelines are monitored periodically by the Company for compliance.

The projected allocation of the plan assets managed by the insurance company is developed in consideration of the expected long-term investment returns for each category of the plan assets. Approximately

63.0%,

35.0%,

and

2.0%

of the plan assets excluding pooled investment portfolios will be allocated to debt securities, equity securities and other financial instruments, respectively, to moderate the level of volatility in pension plan asset returns and reduce risks. Half of the employer’s contribution to the plan during the year ending

March 31, 2019

will be allocated to life insurance pooled investment portfolios and the other

50%

will be allocated to the aforementioned investments.

The following table summarizes the basis used to measure the Company’s pension plan assets at fair value:

Level 1—	Inputs are quoted prices in active markets for identical assets or liabilities.
Level 2—	Inputs are quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
Level 3—	Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable, which reflect the Company’s own assumptions about the assumptions that market participants would use in establishing a price.

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2017	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	528,083		-		-	¥	528,083
U.S. equity		159,618		-		-		159,618
Other equity―developed countries		91,087		-		-		91,087
Total equity securities		778,788		-		-		778,788
Debt securities:
Japanese government and municipalities		-	¥	632,216		-		632,216
Japanese corporate bonds―investment grade		-		290,360		-		290,360
U.S. government		-		127,659		-		127,659
Other government―developed countries		-		173,598		-		173,598
Residential mortgage-backed		-		26,749		-		26,749
Total debt securities		-		1,250,582		-		1,250,582
Other financial instruments*		-		1,464,874		-		1,464,874
Cash		140,915		-		-		140,915
Total assets at fair value	¥	919,703	¥	2,715,456		-	¥	3,635,159

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2018	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	606,612		-		-	¥	606,612
U.S. equity		185,164		-		-		185,164
Other equity―developed countries		102,448		-		-		102,448
Total equity securities		894,224		-		-		894,224
Debt securities:
Japanese government and municipalities		-	¥	786,055		-	¥	786,055
Japanese corporate bonds―investment grade		-		287,216		-		287,216
U.S. government		-		150,444		-		150,444
Other government―developed countries		-		208,011		-		208,011
Residential mortgage-backed		-		34,192		-		34,192
Total debt securities		-		1,465,918		-		1,465,918
Other financial instruments*		-		1,678,236		-		1,678,236
Cash		90,389		-		-		90,389
Total assets at fair value	¥	984,613	¥	3,144,154		-	¥	4,128,767

* Other financial instruments are life insurance pooled investment portfolios.

Pension plan assets classified as Level

1

are comprised principally of equity securities, which are valued using an unadjusted quoted market price in active markets with sufficient volume and frequency of transactions.

Pension plan assets classified as Level

2

are comprised principally of government bonds, corporate bonds and life insurance pooled investment portfolios which are valued based on quoted prices obtained from reputable administrators. The bonds are traded in less active markets and the fair values are based on the price a dealer would pay for the bonds.

IIJ and

one

subsidiary also participate in a contributory multi-employer pension plan, the Japan Computer Information Service Employee's Pension Fund (the "Multi-Employer Plan"), which covers substantially all of their employees.

As stipulated by the Japanese Welfare Pension Insurance Law, the Multi-Employer Plan is composed of a substitutional portion of Japanese Pension Insurance and a multi-employers' portion of a contributory defined benefit pension plan. The benefits for the substitutional portion are based on a standard remuneration schedule under the Welfare Pension Insurance Law and the length of participation. The multi-employer portion of the benefits is based on the employee's length of service. However, assets contributed by an employer including IIJ are

not

segregated in a separate account or restricted to provide benefits only to employees of that employer. The net pension cost under the Multi-Employer Plan is recognized when contributions become due.

Contributions due and paid during the years ended

March 31, 2016,

2017

and

2018

under the Multi-Employer Plan, including its substitutional portion, amounted to

¥123,674

 thousand,

¥117,300

thousand and

¥124,442

thousand, respectively. The Company’s contribution did

not

represent more than

5%

of total contributions to the plan during the years ended

March 31, 2016,

2017

and

2018.

The plan is

not

subject to a funding improvement and was more than

80%

funded as of

March 31, 2017.

The total plan assets were

¥238,628,525

 thousand as of

March 31, 2018.

It was

not

practical to obtain additional information for the plan for the year ended

March 31, 2018.

The amount of retirement benefits for retiring directors and company auditors must be approved by the shareholders.

IIJ had a retirement benefit plan for full-time directors, which was abolished in

June 2011.

The allowance for retirement benefit amounted to

¥255,330

thousand in consideration of their services provided up to the date of abolition of the plan, and this amount will be reserved until each director’s retirement date. IIJ’s subsidiary also has a retirement benefit plan for full-time directors. The Company recorded a liability for retirement benefit for full-time directors of

¥382,881

thousand and

¥399,989

thousand, which would be required if they were all to retire at

March 31, 2017

and

2018,

respectively.

IIJ had a retirement benefit plan for full-time company auditors, which was abolished in

June 2016.

The allowance for retirement benefit amounted to

¥8,020

thousand in consideration of their services provided up to the date of abolition of the plan, and this amount will be reserved until each company auditor’s retirement date. The Company recorded a liability for retirement benefit for full-time company auditors of

¥8,020

thousand, which would be required if they were all to retire at

March 31, 2017

and

2018,

respectively.

XML

Note 14 - Shareholders' Equity

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

14. SHAREHOLDERS' EQUITY

Japanese companies are subject to the Corporation Law of Japan (the “Corporation Law”). The significant provisions in the Corporation Law that affect financial and accounting matters are summarized below:

Dividends

Under the Corporation Law, companies can pay dividends at any time during the fiscal year in addition to the year-end dividend upon resolution at the shareholders meeting. For companies that meet certain criteria such as: (

1

) having a Board of Directors, (

2

) having independent auditors, (

3

) having a Board of Company Auditors, and (

4

) the term of service of the directors is prescribed as

one

year rather than

two

years of normal term by its articles of incorporation, the Board of Directors

may

declare dividends (except for dividends-in-kind) at any time during the fiscal year if the company has prescribed so in its articles of incorporation. However, the Company cannot do so because it does

not

meet criteria (

4

) above. The Corporation Law permits companies to distribute dividends-in-kind (non-cash assets) to shareholders subject to a certain limitation and additional requirements. Semiannual interim dividends

may

also be paid once a year upon resolution by the Board of Directors if the articles of incorporation of the company so stipulate. The Corporation Law provides certain limitations on the amounts available for dividends or the purchase of treasury stock. The limitation is defined as the amount available for distribution to the shareholders, but the amount of net assets after dividends must be maintained at

no

less than

¥3

million.

At the

14

th

Ordinary General Shareholders Meeting held on

June 28, 2006,

IIJ’s shareholders approved the reduction of additional paid-in capital of

¥21,980,395

thousand and common stock of

¥2,539,222

thousand to eliminate the accumulated deficit for the purpose of reporting under the

Corporation Law

in its non-consolidated financial statements. The effective date was

August 4, 2006.

Increase/decreases and transfer of common stock, reserve and surplus

The Corporation Law requires that an amount equal to

10%

of dividends must be appropriated as legal reserve (a component of retained earnings) or as additional paid-in capital (a component of capital surplus) depending on the equity account charged upon the payment of such dividends until the total of aggregate amount of legal reserve and additional paid-in capital equals

25%

of common stock. Under the Corporation Law, the total amount of additional paid-in capital and legal reserve

may

be reversed without limitation. The Corporation Law also provides that common stock, legal reserve, additional paid-in capital, and other capital surplus and retained earnings can be transferred among the accounts under certain conditions upon resolution of shareholders.

Treasury stock and treasury stock acquisition rights

The Corporation Law also provides for companies to purchase treasury stock and dispose of such treasury stock by resolution of the Board of Directors. The amount of treasury stock purchased cannot exceed the amount available for distribution to the shareholders which is determined by a specific formula. The Corporation Law also provides that companies can purchase both treasury stock acquisition rights and treasury stock.

The amount of retained earnings available for dividends under the Corporation Law is based on the amount of retained earnings recorded in IIJ’s general books of account prepared using accepted Japanese accounting practices. The adjustments included in the accompanying consolidated financial statements for U.S. GAAP purposes but

not

recorded in the general books of account have

no

effect on the determination of retained earnings available for dividends under the Corporation Law. Retained earnings available for dividends amounted to

¥27,090,361

thousand at

March 31, 2018.

IIJ's equity in undistributed earnings of affiliated companies accounted for by the equity method included in retained earnings amounted to

¥1,075,129

thousand at

March 31, 2018.

On

June 26, 2015,

IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at

March 31, 2015

of

¥11

per share or the aggregate amount of

¥505,365

thousand.

On

November 9, 2015,

the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at

September 30, 2015

of

¥11

per share or the aggregate amount of

¥505,479

thousand.

On

June 24, 2016,

IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at

March 31, 2016

of

¥11

per share or the aggregate amount of

¥505,480

thousand.

On

November 4, 2016,

the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at

September 30, 2016

of

¥13.5

per share or the aggregate amount of

¥620,361

thousand.

On

June 28, 2017,

IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at

March 31, 2017

of

¥13.5

per share or the aggregate amount of

¥608,317

thousand.

On

November 7, 2017,

the Board of Directors of IIJ resolved the payment of a cash dividend to shareholders of record at

September 30, 2017

of

¥13.5

per share or the aggregate amount of

¥608,349

thousand.

Stock Option Plans

On

May 26, 2011,

IIJ’s Board of Directors resolved to introduce stock compensation-type stock options for executive officers of IIJ. On

June 28, 2011,

IIJ’s ordinary general meeting of shareholders approved the introduction of stock compensation-type stock options for directors of IIJ. Stock compensation-type stock options, which are stock acquisition rights entitling holders to acquire shares upon exercise at an exercise price of

one

yen per share were allocated to directors and executive officers as a substitute for the retirement allowance plan for them and to further promote their motivation and incentives to contribute to the enhancement of the mid- to long-term continuous business performance and corporate value.

The stock acquisition rights become exercisable after a service period of

one

year and are exercisable up to

29

years from the date of vesting. The stock acquisition rights

may

be exercised only within

10

days from the day immediately following the day on which the person loses his or her position as either a director or an executive officer.

On

July 13, 2015,

IIJ granted

151

stock options which were the same type of options granted in

2014

to directors and executive officers. The fair value per option at the date of grant was

¥369,200.

On

July 11, 2016,

IIJ granted

162

stock options which were the same type of options granted in

2015

to directors and executive officers. The fair value per option at the date of grant was

¥360,000.

On

July 14, 2017,

IIJ granted

169

stock options which were the same type of options granted in

2016

to directors and executive officers. The fair value per option at the date of grant was

¥337,200.

The fair value of the stock acquisition rights used to recognize compensation expense for the fiscal years ended

March 31, 2016,

2017

and

2018

were estimated using the Black-Scholes option-pricing model with the following assumptions:

	2016			2017			2018
Assumptions:
Risk-free interest rate		0.818	%		-0.147	%		0.327	%
Expected lives (years)		15			15			15
Expected volatility		53.794	%		52.202	%		50.582	%
Expected dividends		1.023	%		1.045	%		1.316	%

A summary of the activities for the stock acquisition rights plan for the years ended

March 31, 2017

and

2018

is as follows:

							Yen		Years		Thousands of Yen
	Number of Options			Number of Shares			Exercise Price		Remaining Life		Total Intrinsic Value
Unexercised options outstanding—March 31, 2016		557			111,400		¥	1
Granted		162			32,400			1
Exercised		-			-			-
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2017		719			143,800			1
Granted		169			33,800			1
Exercised		(12	)		(2,400	)		1
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2018		876			175,200			1
Exercisable options—March 31, 2018		707			141,400			1		25.80	¥	304,898
Expected to vest after July 15, 2018		169			33,800			1		29.31		72,882

The Company recognized stock compensation cost on a straight-line basis over the requisite service period. The Company recognized

¥55,337

thousand,

¥57,678

thousand and

¥57,321

thousand as stock compensation cost for the fiscal years ended

March 31, 2016,

2017

and

2018,

respectively. The unrecognized expense of

¥14,247

thousand is expected to be recognized over the next

3

months.

XML

Note 15 - Other Comprehensive Income (Loss)

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Comprehensive Income (Loss) Note [Text Block]

15. OTHER COMPREHENSIVE INCOME (LOSS)

Tax effects allocated to each component of other comprehensive income (loss) and reclassification adjustments for the years ended

March 31, 2016,

2017

and

2018

are as follows:

	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2016:
Foreign currency translation adjustments	¥	(67,652	)		-		¥	(67,652	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		(417,400	)	¥	128,977			(288,423	)
Less: Reclassification adjustments for gain (loss) included in net income		3,965			(1,328	)		2,637
Other		-			9,834			9,834
Net unrealized holding gain (loss) during the period		(413,435	)		137,483			(275,952	)
Defined benefit pension plans:
Amount arising during the period		(585,332	)		192,576			(392,756	)
Less: Reclassification adjustments for gain (loss) included in net income		(2,606	)		944			(1,662	)
Net defined benefit pension plans		(587,938	)		193,520			(394,418	)
Other comprehensive income (loss)	¥	(1,069,025	)	¥	331,003		¥	(738,022	)
Year ended March 31, 2017:
Foreign currency translation adjustments	¥	(188,036	)	¥	6,926		¥	(181,110	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		1,840,782			(579,846	)		1,260,936
Less: Reclassification adjustments for gain (loss) included in net income		27,846			(8,827	)		19,019
Other		-			140			140
Net unrealized holding gain (loss) during the period		1,868,628			(588,533	)		1,280,095
Defined benefit pension plans:
Amount arising during the period		276,702			(87,161	)		189,541
Less: Reclassification adjustments for gain (loss) included in net income		24,584			(10,079	)		14,505
Net defined benefit pension plans		301,286			(97,240	)		204,046
Other comprehensive income (loss)	¥	1,981,878		¥	(678,847	)	¥	1,303,031

	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2018:
Foreign currency translation adjustments	¥	2,081		¥	(2,985	)	¥	(904	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		4,714,731			(1,485,140	)		3,229,591
Less: Reclassification adjustments for gain (loss) included in net income		(1,068,303	)		380,922			(687,381	)
Net unrealized holding gain (loss) during the period		3,646,428			(1,104,218	)		2,542,210
Defined benefit pension plans:
Amount arising during the period		44,710			(14,083	)		30,627
Less: Reclassification adjustments for gain (loss) included in net income		5,489			(2,250	)		3,239
Net defined benefit pension plans		50,199			(16,333	)		33,866
Other comprehensive income (loss)	¥	3,698,708		¥	(1,123,536	)	¥	2,575,172

The changes in accumulated other comprehensive income (loss) by component for the years ended

March 31, 2016,

2017

and

2018

are as follows:

	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2015:	¥	1,544,946		¥	(229,203	)	¥	622,906		¥	1,938,649
Other comprehensive income (loss) before reclassifications		(278,589	)		(392,756	)		(71,610	)		(742,955	)
Amounts reclassified out of accumulated other comprehensive income		2,637			(1,662	)		-			975
Other comprehensive loss		(275,952	)		(394,418	)		(71,610	)		(741,980	)
Year ended March 31, 2016:	¥	1,268,994		¥	(623,621	)	¥	551,296		¥	1,196,669

	Thousands of Yen
	Unrealized holding gain on securities		Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2016:	¥	1,268,994	¥	(623,621	)	¥	551,296		¥	1,196,669
Other comprehensive loss before reclassifications		1,261,076		189,541			(181,110	)		1,269,507
Amounts reclassified out of accumulated other comprehensive income		19,019		14,505			-			33,524
Other comprehensive income (loss)		1,280,095		204,046			(181,110	)		1,303,031
Year ended March 31, 2017:	¥	2,549,089	¥	(419,575	)	¥	370,186		¥	2,499,700

	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2017:	¥	2,549,089		¥	(419,575	)	¥	370,186		¥	2,499,700
Other comprehensive income (loss) before reclassifications		3,229,591			30,627			(904	)		3,259,314
Amounts reclassified out of accumulated other comprehensive income		(687,381	)		3,239			-			(684,142	)
Other comprehensive income (loss)		2,542,210			33,866			(904	)		2,575,172
Year ended March 31, 2018:	¥	5,091,299		¥	(385,709	)	¥	369,282		¥	5,074,872

The amounts reclassified from accumulated other comprehensive income (loss) to the consolidated statements of income, with presentation location, for the years ended

March 31, 2016,

2017

and

2018,

are as follows:

	Thousands of Yen
	2016			2017			2018			Location
Other comprehensive income (loss) components:
Unrealized holding gain on securities		-		¥	2,708		¥	1,068,303		Net gain on sales of other investments
	¥	(3,965	)		(30,554	)		-		Impairment of other investments
		1,328			8,827			(380,922	)	Income tax expense
		(2,637	)		(19,019	)		687,381		Net income
Defined benefit pension plans		2,606			(24,584	)		(5,489	)	Net periodic pension costs (Note 13)
		(944	)		10,079			2,250		Income tax expense
		1,662			(14,505	)		(3,239	)	Net income
Total amount reclassified	¥	(975	)	¥	(33,524	)	¥	726,568

XML

Note 16 - Basic and Diluted Net Income Per Common Share

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Earnings Per Share [Text Block]

16. BASIC AND DILUTED NET INCOME PER COMMON SHARE

Basic and diluted net income attributable to Internet Initiative Japan Inc. per common share for the

three

years ended

March 31, 2016,

2017

and

2018

is as follows:

	Thousands of Yen
	2016		2017		2018
Numerator:
Net income attributable to Internet Initiative Japan Inc. ― basic and diluted	¥	4,038,282	¥	3,166,510	¥	5,108,949

	Number of Shares
	2016		2017		2018
Denominator:
Weighted-average common shares outstanding ― basic		45,950,098		45,652,981		45,062,878
Dilutive effect of stock options		93,285		119,489		152,808
Weighted-average common shares outstanding ― diluted		46,043,383		45,772,470		45,215,686

	Yen
	2016		2017		2018
Basic net income attributable to Internet Initiative Japan Inc. per common share	¥	87.88	¥	69.36	¥	113.37
Diluted net income attributable to Internet Initiative Japan Inc. per common share	¥	87.71	¥	69.18	¥	112.99

XML

Note 17 - Commitments And Contingent Liabilities

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

17. COMMITMENTS AND CONTINGENT LIABILITIES

The Company is involved in litigation and claims arising in the ordinary course of business. In evaluating the matter on an ongoing basis, the Company takes into account amounts already accrued on the consolidated balance sheet. The Company believes that an exposure to loss does

not

exist in excess of the amount accrued and the negative adverse outcome of such litigation and claims would

not

have a significant impact on the consolidated financial position or results of operations.

On

September 1, 2010,

IIJ-Global entered into a Solutions Engagement Agreement with IBM Japan Ltd., IIJ-Global’s largest sales partner. This agreement, which establishes the basis for a procurement relationship between IIJ-Global and IBM Japan, contains indemnification for IIJ-Global to perform services, functions, responsibilities and others in a way that were being performed by AT&T Japan. This agreement renews automatically every year. IIJ-Global had

no

obligation for the indemnification as of

March 31, 2018.

In

May 2006,

January 2007,

January 2008

and

January 2015,

IIJ entered into agreements (

four

agreements in total) for investing in funds which invest in mainly unlisted stocks with an investment advisory company. IIJ committed to provide up to

$5,000

thousand for each fund (

$20,000

thousand in total) upon the request of the fund until

January 31, 2027.

IIJ has provided a total of

$16,357

thousand to the funds as of

March 31, 2018.

The amounts invested in their funds were recorded as other investments in the Company’s consolidated balance sheets.

In

April 2013,

IIJ entered into an agreement to invest in a corporation reconstruction fund with an investment advisory company. IIJ committed to provide up to

¥100,000

thousand upon the request of the fund until

April 23, 2018.

IIJ has provided a total of

¥92,816

thousand to the fund as of

March 31, 2018.

The amounts invested in the fund were recorded as other investments in the Company’s consolidated balance sheets.

XML

Note 18 - Financial Instruments

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Financial Instruments Disclosure [Text Block]

18. FINANCIAL INSTRUMENTS

Fair Value—

In the normal course of business, the Company invests in financial assets. To estimate the fair value of those financial assets, the Company uses quoted market prices to the extent that they are available. Where a quoted market price is

not

available, the Company estimates fair value using primarily the discounted cash flow method. For certain financial assets and liabilities, such as trade receivables and trade payables, which are expected to be collected and settled within

one

year, the Company assumes that the carrying amount approximates fair value due to their short maturities. Investments for which it is

not

practicable to estimate fair value primarily consist of investments in a number of unaffiliated and unlisted smaller sized companies and the estimate of their fair values cannot be made without incurring excessive costs. Refundable insurance policies are carried at cash surrender value. Long-term borrowings and long-term accounts payable are valued based on the present value of future cash flows associated with each instruments discounted using current market borrowing rates for similar debt instruments of comparable maturity. The carrying amounts and fair value of financial instruments are summarized below:

	Thousands of Yen
	2017				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Other investments for which it is:
Practicable to estimate fair value	¥	5,780,340	¥	5,780,340	¥	9,288,208	¥	9,288,208
Not practicable		2,144,574		-		2,086,234		-
Noncurrent refundable insurance policies (other assets)		211,526		211,526		272,610		272,610
Long-term borrowings		8,500,000		8,485,311		15,500,000		15,437,103
Long-term accounts payable (other noncurrent liabilities)		1,468,183		1,466,952		896,810		895,770

Cash and cash equivalents were classified as Level

1

instruments. Short-term and long-term borrowings and long-term accounts payable were classified as Level

2

instruments.

Other investments for which it is practicable to estimate fair value are available-for-sales equity and debt securities disclosed in Note

4.

Other investments for which it is

not

practicable to estimate fair value were comprised of non-marketable equity securities of

¥1,123,620

thousand and investments in funds of

¥1,020,954

thousand as of

March 31, 2017

and non-marketable equity securities of

¥1,013,806

thousand and investments in funds of

¥1,072,428

thousand as of

March 31, 2018

XML

Note 19 - Fair Value Measurements

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Fair Value Disclosures [Text Block]

19.

FAIR VALUE MEASUREMENTS

ASC

820,

“Fair Value Measurement”, defines fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. ASC

820

establishes a

three

-level fair value hierarchy that prioritizes the inputs used to measure fair value as follows:

Level 1—	Inputs are quoted prices in active markets for identical assets or liabilities.
Level 2—	Inputs are quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs that are derived principally from or corroborated by observable market data by correlation or other means.
Level 3—	Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable, which reflect the reporting entity’s own assumptions about the assumptions that market participants would use in establishing a price.

There were

no

transfers between Level

1

and Level

2

for the years ended

March 31, 2017

and

2018.

Assets Measured at Fair Value on a Recurring Basis

The following table presents the Company’s assets that are measured at fair value on a recurring basis at

March 31, 2017

and

2018,

consistent with the fair value hierarchy provisions of ASC

820.

	Thousands of  Yen
March 31, 2017	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	5,669,510		-		-	¥	5,669,510
Available-for-sale securities— debt securities		-	¥	110,830		-		110,830
Total assets	¥	5,669,510	¥	110,830		-	¥	5,780,340

	Thousands of  Yen
March 31, 2018	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	9,176,038		-		-	¥	9,176,038
Available-for-sale securities— debt securities		-	¥	112,170		-		112,170
Total assets	¥	9,176,038	¥	112,170		-	¥	9,288,208

Available-for-sale securities are comprised of marketable equity and debt securities. Marketable equity securities are listed on Japan and Hong Kong securities markets and are valued using an unadjusted quoted market price in active markets with sufficient volume and frequency of transactions. Marketable debt securities are valued using quoted prices obtained from financial institutions.

Assets Measured at Fair Value on a Nonrecurring Basis

	Thousands of Yen
March 31, 2017	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Trademark		-		-	¥	15,000	¥	81,000
		-		-	¥	15,000	¥	81,000

	Thousands of Yen
March 31, 2018	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Non-marketable securities—equity securities		-		-	¥	17,616	¥	109,840
		-		-	¥	17,616	¥	109,840

The trademark right related to hi-ho with a carrying amount of

¥96,000

thousand was written down to a fair value of

¥15,000

thousand, resulting in an impairment charge of

¥81,000

thousand, which was included in the Company’s consolidated statement of income for the year ended

March 31, 2017.

The impaired trademark was classified within Level

3

as the Company used unobservable inputs such as expected future income to value the trademark.

Non-marketable equity securities with a carrying amount of

¥127,456

thousand, which was included in other investments in the balance sheets, were written down to the fair value of

¥17,616

thousand, resulting in an other-than-temporary impairment charge of

¥109,840

thousand, which was included in the consolidated statement of income for the year ended

March 31, 2018.

The Company used unobservable inputs to value the impairment of these non-marketable Level

3

investments. The fair value was determined as a result of considering various unobservable inputs, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in assets and liabilities held by the investees.

Level

3

valuations are determined by the Company’s valuation team (accounting and financing managers) based on the methodologies used to perform the valuation of each instrument. The Company uses

third

-party valuation firms to conduct the valuation of certain instruments, if necessary. Detailed reviews of the methodologies in valuations and the reasonableness of the valuations (including those performed by

third

parties) are performed by the Chief Financial Officer.

The following table presents information relating to the significant unobservable inputs of the Company’s Level

3

non-recurring measurements.

	Thousands of Yen
March 31, 2017	Fair value		Valuation technique	Unobservable inputs	Range
Trademark		¥15,000	Relief from	Discount Rate		6.8%
			royalty method	Royalty rate		0.1%

XML

Note 20 - Business Segments

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

20. BUSINESS SEGMENTS

The operating segments reported below are those for which segment-specific financial information is available. Accounting policies used to determine segment profit or loss and segment assets are consistent with those used to prepare the consolidated financial statements in accordance with U.S. GAAP. The Company’s chief operating decision-maker uses this financial information to make decisions on the allocation of resources and to evaluate business performance.

The Network service and systems integration business segment comprises revenues from network services, systems integration and equipment sales.

The ATM operation business segment comprises revenues from the ATM operation business.

Revenues:

	Thousands of Yen
	2016			2017			2018
Network service and systems integration business:
Customers	¥	136,759,130		¥	153,738,978		¥	172,019,965
Intersegment		383,058			387,178			350,155
Total		137,142,188			154,126,156			172,370,120
ATM operation business:
Customers		3,888,878			4,050,081			4,030,684
Intersegment		-			-			-
Total		3,888,878			4,050,081			4,030,684
Elimination		(383,058	)		(387,178	)		(350,155	)
Consolidated total	¥	140,648,008		¥	157,789,059		¥	176,050,649

Segment Profit or Loss:

	Thousands of Yen
	2016			2017			2018
Operating income:
Network service and systems integration business	¥	5,127,807		¥	3,853,960		¥	5,430,148
ATM operation business		1,148,922			1,437,601			1,510,176
Elimination		(136,375	)		(157,254	)		(178,122	)
Consolidated total	¥	6,140,354		¥	5,134,307		¥	6,762,202

Segment Assets:

	Thousands of Yen
	2017		2018
Segment assets:
Network service and systems integration business	¥	132,756,717	¥	150,229,527
ATM operation business		4,638,432		5,219,292
Elimination		-		(2,000,000	)
Consolidated total	¥	137,395,149	¥	153,448,819

Other significant items:

	Thousands of Yen
	2016		2017		2018
Depreciation and amortization:
Network service and systems integration business	¥	9,377,657	¥	10,400,255	¥	11,900,494
ATM operation business		543,898		493,402		464,379
Consolidated total	¥	9,921,555	¥	10,893,657	¥	12,364,873

For information regarding the goodwill and the other impairment losses on intangible assets, see Note

8,

“Goodwill and Other intangible assets.”

Transfers between reportable businesses are made at market-based prices. Operating income is operating revenue less costs and operating expenses.

Substantially all revenues are from customers operating in Japan. Geographic information is

not

presented due to immateriality of revenue attributable to international operations.

XML

Note 21 - Advertising Expenses

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Other Income and Other Expense Disclosure [Text Block]

21. ADVERTISING EXPENSES

Advertising expenses incurred during the years ended

March 31, 2016,

2017

and

2018

related primarily to advertisements in magazines, journals and newspapers and amounted to

¥815,439

thousand,

¥953,632

thousand and

¥1,459,747

thousand, respectively.

XML

Note 22 - Related Party Transactions

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Related Party Transactions Disclosure [Text Block]

22. RELATED PARTY TRANSACTIONS

NTT and its subsidiaries own

26.0%

of IIJ's outstanding common shares and

26.9%

of IIJ's voting shares as of

March 31, 2018.

The Company entered into a number of different types of transactions with NTT and its subsidiaries, including purchases of wireline telecommunication services for the Company’s offices and capital lease arrangements. For the Company’s connectivity and outsourcing services, the Company purchases international and domestic backbone services, local access lines and rental rack space in data centers and mobile data communication services from NTT and its subsidiaries. The Company sells to NTT and its subsidiaries its services, system integration services and monitoring services for their data centers.

The amounts of balances as of

March 31, 2017

and

2018

and transactions of the Company with NTT and its subsidiaries for each of the

three

years in the period ended

March 31, 2018,

are summarized as follows:

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	275,671	¥	287,812
Other current assets		-		889,061		2,253,882
Accounts payable		-		3,970,794		4,103,560
Capital lease obligations		-		2,771,532		3,088,795
Revenues	¥	3,129,622		3,440,263		3,902,856
Costs		24,268,440		31,991,750		36,729,517
Interest expense		30,370		48,234		64,795

As for balances and transactions with equity method investees, refer to Note

6,

“Investments in Equity Method Investees.”

XML

Note 23 - Subsequent Events

12 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Subsequent Events [Text Block]

23. SUBSEQUENT EVENTS

On

June 28, 2018,

IIJ’s shareholders approved the payment of a cash dividend to shareholders of record at

March 31, 2018

of

¥13.5

per share or

¥608,349

thousand in the aggregate.

XML

Significant Accounting Policies (Policies)

12 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation—

IIJ maintains its records and prepares its financial statements in accordance with generally accepted accounting principles in Japan. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform to generally accepted accounting principles in the United States of America (“U.S. GAAP”). These adjustments were

not

recorded in the statutory accounts.

Consolidation, Policy [Policy Text Block]

Consolidation—

The consolidated financial statements include the accounts of IIJ and all of its subsidiaries,which are IIJ Engineering Inc. (“IIJ-EG,” which was renamed from Net Care, Inc.), IIJ America, Inc. (“IIJ-America”), Netchart Japan Inc. (“NCJ”), hi-ho Inc. (“hi-ho”), Trust Networks Inc. (“Trust Networks”), IIJ Innovation Institute Inc. (“IIJ-II”), IIJ Global Solutions Inc. (“IIJ-Global”), IIJ Europe Limited (“IIJ-Europe”), RYUKOSHA NETWARE Inc. (“RYUKOSHA”) and

eight

other foreign subsidiaries. All of the subsidiaries, except for IIJ-America, IIJ-Europe and other foreign subsidiaries, have fiscal years ending

March 31.

IIJ-America, IIJ-Europe and other foreign subsidiaries’ fiscal year-end is

December 31

and such date was used for purposes of preparing the consolidated financial statements as it is

not

practicable for the foreign subsidiaries to report their financial results as of

March 31.

There were

no

significant events that occurred during the intervening period that would require adjustment to or disclosure in the accompanying consolidated financial statements. Intercompany transactions and balances have been eliminated in consolidation.

Investments in companies over which IIJ has significant influence but

not

control are accounted for by the equity method. For other-than-temporary declines in the value of investments in equity method investees below the carrying amount, the investments are reduced to fair value and an impairment loss is recognized. Equity method goodwill, which is the portion of the difference between the cost of an investment and the amount of underlying equity in net assets of an investee, is

not

amortized, but equity method investments are continuously reviewed for impairment in accordance with Accounting Standards Codification (“ASC”)

323,

“Investments-Equity Method and Joint Ventures.”

A subsidiary or equity method investee

may

issue its shares to

third

parties at amounts per share in excess of or less than the Company’s average per share carrying value. Changes in a parent’s ownership interest while the parent retains its controlling financial interest in its subsidiary are accounted for as equity transactions.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates—

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Significant estimates and assumptions used are primarily in the areas of evaluation of investments, valuation allowances for deferred tax assets, allowance for doubtful accounts, determination of pension benefit costs and obligations, estimated useful lives of fixed assets and intangible assets with finite useful lives and impairment of long-lived assets, goodwill and intangible assets deemed to have indefinite useful lives. Actual results could differ from those estimates.

Revenue Recognition, Policy [Policy Text Block]

Revenue Recognition—

Network service revenues are billed and recognized monthly on a straight-line basis. Initial setup fees received in connection with network services are deferred and recognized over the estimated average period of the subscription for each service.

System integration revenue involves

one

or more of the following deliverables:

・	System construction services―include all or some of the following elements depending on arrangements to meet each of our customer's requirements: consulting, project planning, system design, and the development of network systems. These services also include the installation of software as well as configuration and installation of hardware.
・	Software―we resell third -party software such as Oracle and Windows to our customers, which are installed by us during the system development process.
・	Hardware―we also resell third -party hardware, primarily servers, switches and routers, which we install during the system development process. The hardware is generic hardware that is often sold by third -party manufacturers and resellers.
・	Monitoring and operating services―we monitor our customer's network activity and Internet connectivity to detect and report problems. We also provide constant data backup services.
・	Hardware and software maintenance services―we repair or replace any malfunctioning parts of hardware. We examine software faults and provide suitable solutions to customers.

The system construction services are generally delivered over a

three

-month period. All hardware and software are delivered and installed during this period. Customers are required to pay a specified fixed fee that is

not

payable until after the system construction has been completed and accepted by our customers.

Monitoring, operating, and hardware and software maintenance services generally commence once our customers have accepted the systems, and contract periods are generally from

one

to

five

years. Our contracts include a stated annual fee for these services.

For multiple-element arrangements that include system construction services, hardware, software essential to the hardware product’s functionality and undelivered non-software services (e.g., monitoring and operating services), the Company allocates revenue to all deliverables based on their relative selling prices. The Company uses a hierarchy to determine the selling price to be used for allocating revenue to the deliverables: (i) vendor-specific objective evidence of fair value (“VSOE”), (ii)

third

-party evidence of the selling price (“TPE”) and (iii) best estimate of the selling price (“ESP”). The allocation of revenue is based mainly on the Company’s ESPs except for certain undelivered non-software services for which VSOE has been established. The Company’s process for determining its ESP for deliverables includes various factors that

may

vary depending on the circumstances and specific characteristics related to each deliverable. In developing the ESP, the Company considers customer demand, the existence and effect of competitors, general profit margin realized in the marketplace, volume of the transactions, the Company’s internal costs of providing the deliverables, the profit objectives including targeted and historical margins realized on similar sales to similar customers and the historical pricing practices.

The method used to account for each unit and the period over which each unit of accounting is recognized are as follows:

・	Revenue allocated to system construction services is accounted for using contract accounting. System construction service revenues, which are generally completed within three months, are recognized based on the completed-contract method in compliance with ASC 605 - 35 - 25 - 92 because the Company is unable to bill customers and the title to the constructed network system is not transferred to the customers unless they are satisfied with and accept the completed systems.
・	Revenue related to the hardware and software essential to the hardware product’s functionality is not recognized until the customer acceptance is received because title to the hardware and software do not transfer to our customers until formal acceptance is received.
・	Revenue related to undelivered non-software services (monitoring, operating and hardware maintenance services) is recognized on a straight-line basis over the contract period.

The Company also enters into multiple-element arrangements for system integration services that include software

not

essential to the hardware product’s functionality and software-related services and accounts for them in accordance with ASC

985

-

605,

“Software-Revenue Recognition.” The Company has been able to establish VSOE of fair value of the software-related services based on separate renewal contracts of the services that are consistently priced within a narrow range. The Company allocates revenue to such services based on VSOE and recognizes the revenues on a straight-line basis over the contract period. The Company allocates the residual amount to the software.

Equipment sales revenues are recognized when equipment is delivered and accepted by the customer.

The Company evaluates whether it is appropriate to record the gross amount of revenues and related costs or the net amount earned in reporting system construction services and equipment sales, depending on whether the Company functions as the principal or agent.

The ATM operation business revenues consist primarily of commissions for each withdrawing transaction with the use of ATMs. The ATM commission collected from each withdrawal is aggregated every month and recognized as ATM operation revenues.

Revenue is recognized net of consumption tax collected from customers and subsequently remitted to governmental authorities.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents—

Cash and cash equivalents includes time deposits with original maturities of

three

months or less.

Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]

Allowance for Doubtful Accounts—

An allowance for doubtful accounts is established in amounts considered to be appropriate based primarily upon the Company's past credit loss experience and an evaluation of potential losses in the receivables outstanding.

Investment, Policy [Policy Text Block]

Other Investments—

The Company classifies its marketable equity and debt securities as available-for-sale securities, which are accounted for at fair value with unrealized gains and losses excluded from earnings and reported in accumulated other comprehensive income (loss). The cost of securities sold is determined based on average cost.

The Company reviews the fair value of available-for-sale securities on a regular basis to determine if the fair value of any individual security has declined below its cost and if such decline is other-than-temporary. If the decline in value is judged to be other-than-temporary, the cost basis of the investment is written down to fair value. Other-than-temporary declines in value are determined taking into consideration the extent of decline in fair value, the length of time that the decline in fair value below cost has existed, the financial condition and near-term prospects of the issuer, and the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value and events that might accelerate the recognition of impairment. For debt securities for which the declines are deemed to be other-than-temporary and there is

no

intent to sell and it is

not

more likely than

not

that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments are separated into the amount related to credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income (loss). For debt securities for which the declines are deemed to be other-than-temporary and there is an intent to sell or it is more likely than

not

that the Company will be required to sell the securities before the recovery of the amortized cost basis, impairments in their entirety are recognized in earnings. For equity securities for which the declines are deemed to be other-than-temporary, the resulting realized loss is recognized in earnings in the period in which the decline is deemed to be other-than-temporary.

Non-marketable equity securities are carried at cost as fair value is

not

readily determinable. When the Company evaluates whether non-marketable equity securities are impaired or

not,

the Company evaluates

first

whether an event or change in circumstances has occurred in the period that

may

have significant adverse effect on the fair value of the securities (an impairment indicator). The Company uses such impairment indicators as follows:

・	A significant deterioration in the earnings performance or business prospects of the investee.
・	A significant adverse change in the regulatory, economic, or technological environment of the investee.
・	A significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates.
・	A recent example of the new issuance of a security, in which the issue price is less than our cost.

The Company estimates the fair value of the non-marketable equity securities when an impairment indicator is present. The fair value is determined as a result of considering various unobservable inputs which are available to the Company, including expectation of future income of the investees, net asset value of the investees, and material unrealized losses to be considered in assets and liabilities held by the investees. The Company recognizes impairment of non-marketable equity securities when the fair value is below the carrying amount and the decline in fair value is considered to be other-than-temporary.

Inventory, Policy [Policy Text Block]

Inventories—

Inventories consist mainly of network equipment purchased for resale and work-in-process for construction of network systems. Network equipment purchased for resale is stated at the lower of cost, which is determined by the average-cost method, or net realizable value. Work-in-process for development of network systems is stated at the lower of actual production costs, including overhead cost, or net realizable value. Inventories are reviewed periodically and items considered to be slow-moving or obsolete are written down to their estimated net realizable value.

Lessee, Leases [Policy Text Block]

Leases—

Capital leases are capitalized at the inception of the lease at the present value of the minimum lease payments during the lease term. All other leases are accounted for as operating leases. Lease payments for capital leases are apportioned to interest expense and a reduction of the lease liability to achieve a constant rate of interest on the remaining balance of the liability. Operating lease payments are recognized as expense on a straight-line basis over the lease term.

Revenue Recognition Leases, Capital [Policy Text Block]

Sales-Type Leases—

The Company has some sales-type lease agreements with customers. The Company recognizes revenues on sales-type leases when the assets under lease are delivered to and accepted by the customers. The revenue recognized is calculated at the net present value of the future receipt amounts. Interest income in sales-type leases is recognized in other income using the interest method.

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment—

Property and equipment are recorded at cost. Depreciation and amortization of property and equipment, including capitalized software and capital leases, are computed principally using the straight-line method based on either the estimated useful lives of the assets or the lease period, whichever is shorter.

The useful lives for depreciation and amortization by major asset classes are as follows:

	Range of Useful Lives (in years)
Data communications, office and other equipment	2	to	20
Buildings		20
Leasehold improvements	4	to	20
Capitalized software	5	to	7
Capital leases	4	to	6

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Impairment of Long-Lived Assets—

Long-lived assets consist principally of property and equipment, including those items leased under capital leases and amortized intangible assets. The Company evaluates the impairment of long-lived assets whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group

may

not

be recoverable. Long-lived assets to be held and used are reviewed for impairment by comparing the carrying amount of the asset or asset group with their estimated undiscounted future cash flows. If the cash flows are determined to be less than the carrying amount of the asset or asset group, an impairment loss has occurred and the loss would be recognized during the period for the difference between the carrying amount of the asset or asset group and estimated fair value.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

Goodwill and Intangible Assets—

Goodwill and intangible assets that are deemed to have indefinite useful lives are

not

amortized, but are subject to impairment testing. Impairment testing is performed annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company performs annual impairment tests on

March 31.

If the carrying amount of a reporting unit exceeds its fair value, the Company then performs the

second

step of the goodwill impairment test to measure the amount of impairment loss, if any. Intangible assets with finite useful lives, consisting of customer relationships, are amortized using a non-straight-line basis based on the pattern of expected future economic benefit over the estimated useful lives, which range from

10

to

19

years.

Asset Retirement Obligation [Policy Text Block]

Asset Retirement Obligations—

The Company records the fair value of a liability for an asset retirement obligation in the period in which it is incurred. When the liability is initially recorded, the Company capitalizes the related cost by increasing the carrying amount of long-lived asset. Over time, the liability is accreted to its present value each period, and the capitalized cost is depreciated for the period the Company has estimated.

Pension and Other Postretirement Plans, Policy [Policy Text Block]

Pension and Severance Indemnities Plans—

The Company has defined benefit pension plans and severance indemnities plans. The cost of the pension plans and severance indemnities plans are accrued based on amounts determined using actuarial methods. In addition, the Company has defined contribution pension plans. The costs of defined contribution pension plans are charged to expenses when incurred.

Income Tax, Policy [Policy Text Block]

Income Taxes—

Income tax expense is based on reported earnings before income taxes. Deferred income taxes reflect the impact of temporary differences between assets and liabilities recognized for financial reporting purposes and such amounts recognized for tax purposes and tax loss carryforwards. These deferred taxes are measured using the currently enacted tax rates in effect for the year in which the temporary differences or tax loss carryforwards are expected to reverse. Valuation allowances are provided against deferred tax assets when it is more likely than

not

that a tax benefit will

not

be realized.

The Company recognizes the financial statement effect of uncertain tax positions when it is

not,

based on the technical merits, that the tax positions will be sustained upon examination by the tax authorities. Benefits from tax positions that meet the more-likely-than-

not

recognition threshold are measured at the largest amount of benefit that is greater than

50%

likely of being realized upon settlement. Interest and penalties accrued related to unrecognized tax benefits are included in income tax expense in the consolidated statements of income.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency Translation—

The assets and liabilities of a foreign subsidiary and an equity method investee are translated into Japanese yen at the respective year-end exchange rates. All income and expense accounts are translated at average rates of exchange. The resulting translation adjustments are included in accumulated other comprehensive income (loss).

Foreign currency assets and liabilities are stated at the amount as computed by using year-end exchange rates and the resulting transaction gain or loss is recognized in earnings.

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

Stock-Based Compensation—

The Company measures and records the compensation cost from stock compensation-type stock options based on fair value. The fair value of the stock option is measured on the date of grant using the Black-Scholes option-pricing model, and amortized over the requisite service period. The compensation cost is mainly included in “General and administrative” expenses.

Research, Development, and Computer Software, Policy [Policy Text Block]

Research and Development Costs—

Research and development costs are expensed as incurred.

Advertising Costs, Policy [Policy Text Block]

Advertising—

Advertising costs are expensed as incurred and are recorded in “Sales and marketing.”

Earnings Per Share, Policy [Policy Text Block]

Basic and Diluted Net Income Attributable to Internet Initiative Japan Inc. per Common Share—

Basic net income attributable to Internet Initiative Japan Inc. per common share is computed by dividing net income attributable to Internet Initiative Japan Inc. by the weighted-average number of shares of common stock outstanding during the year. Diluted net income attributable to Internet Initiative Japan Inc. per common share reflects the potential dilutive effect of stock options.

Comprehensive Income, Policy [Policy Text Block]

Other Comprehensive Income (Loss)—

Other comprehensive income (loss) consists of translation adjustments resulting from the translation of financial statements of a foreign subsidiary, unrealized gains or losses on available-for-sale securities and defined benefit pension plan adjustments.

Segment Reporting, Policy [Policy Text Block]

Segment Reporting—

ASC

280,

“Segment Reporting”, establishes standards for reporting information about operating segments. Operating segments are defined as components of an enterprise that engage in business activities from which it

may

earn revenues and incur expense and for which separate financial information is available that is evaluated regularly by the chief operation decision-maker in deciding how to allocate resources and in assessing performance.

The Company provides a comprehensive range of network solutions to meet its customers’ needs by cross-selling a variety of services, including Internet connectivity services, WAN services, outsourcing services, systems integration and sales of network-related equipment, and ATM operation services. The Company’s chief operating decision-maker, who is the Company’s Chief Operating Officer ("COO"), regularly reviews the revenue and cost of sales of the Company’s

two

operating segments the Network service and systems integration business segment and the ATM operation business segment. The COO also makes decisions regarding how to allocate resources and assess performance based on these segments.

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Guidance

In

July 2015,

the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”)

2015

-

11,

“Inventory (Topic

330

): Simplifying the Measurement of Inventory,” which applies to inventory that is measured using the

first

-in,

first

-out method (“FIFO”) or average cost methods. Under the updated guidance, an entity should measure inventory within the scope of the guidance at the lower of cost or net realizable value, which is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. Subsequent measurement is unchanged for inventory that is measured using the last-in,

first

-out method (“LIFO”). This ASU is effective for annual and interim periods beginning after

December 15, 2016

and should be applied prospectively with early adoption permitted at the beginning of an interim or annual reporting period. The Company adopted this ASU in the

first

quarter beginning

April 1, 2017.

The adoption of this ASU did

not

have a material impact on the Company’s financial position or results of operations.

In

November 2015,

the FASB issued ASU

2015

-

17,

“Balance Sheet Classification of Deferred Taxes (Topic

740

)” which changes how deferred taxes are classified on our balance sheets. This ASU requires all deferred tax assets and liabilities to be classified as non-current. This ASU is effective for annual and interim periods beginning after

December 15. 2016,

with early adoption permitted. The Company adopted this ASU in the

first

quarter beginning

April 1, 2017

with prospective application. Prior periods were

not

retrospectively adjusted. Current deferred tax assets and liabilities included in the consolidated balance sheets as of

March 31, 2017

are

¥1,298,469

thousand and

¥108,994

thousand, respectively.

Accounting Guidance Issued But

Not

Adopted as of

March 31, 2018

In

May 2014,

the FASB issued ASU

2014

-

09,

“Revenue from Contracts with Customers (Topic

606

),” to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and International Financial Reporting Standards. This guidance also requires an entity to improve disclosures to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

ASU

2015

-

14,

“Revenue from Contracts with Customers: Deferral of the Effective Date,” which was issued in

August 2015,

revised the effective date for ASU

2014

-

09

to annual and interim periods beginning after

December 15, 2017,

with early adoption permitted, but

not

earlier than the original effective date of annual and interim periods beginning after

December 15, 2016,

for public entities.

In

March 2016,

the FASB issued ASU

2016

-

08,

"Revenue from Contracts with Customers (Topic

606

): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)," which is an amendment to ASU

2014

-

09

on assessing whether an entity is a principal or an agent in a revenue transaction. This amendment addresses implementation issues that were discussed by the Revenue Recognition Transition Resource Group ("TRG") to clarify the principal versus agent assessment and provide for a more consistent application. This new standard has the same effective date and transition requirements as ASU

2014

-

09.

The guidance permits

two

methods of adoption. The Company currently plans to adopt the standard using the “modified retrospective method.” Under that method, the Company will apply the rules to all contracts existing as of

April 1, 2018,

recognizing in beginning retained earnings an adjustment for the cumulative effect of the change and providing additional disclosures comparing results to previous accounting standards.

The Company expects revenue recognition for its broad portfolio of hardware, software and services to remain largely unchanged. However, the guidance is expected to change the allocation of contract revenues between various services and equipment and the timing of revenue recognition for certain nonrefundable upfront fees.

Although the Company expenses sales commissions as incurred, the requirements in the new standard to capitalize certain in-scope sales commissions will

not

result in a significant change to the Company’s results. However, the requirement to defer such incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of a deferred charge on the Company’s balance sheets.

The Company is in the process of finalizing the assessment of the impact of adopting this guidance and expects that the adoption will

not

have a material impact on the Company’s results of operations and financial position.

In

January 2016,

the FASB issued ASU

2016

-

01,

"Financial Instruments - Overall (Subtopic

825

-

10

): Recognition and Measurement of Financial Assets and Financial Liabilities," which amends the guidance in U.S. GAAP on the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, the ASU clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The new standard is effective for fiscal years and interim periods beginning after

December 15, 2017,

and upon adoption, an entity should apply the amendments by means of a cumulative effect adjustment to the balance sheet at the beginning of the

first

reporting period in which the guidance is effective. Early adoption is

not

permitted, except for the provision to record fair value changes for financial liabilities under the fair value option resulting from instrument-specific credit risk in other comprehensive income. The Company anticipates that the adoption of this guidance will increase the volatility of the Company’s other income (expenses), resulting from the remeasurement of the Company’s equity securities.

In

February 2016,

the FASB issued ASU

2016

-

02,

"Leases (Topic

842

)," which requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The new guidance requires that a lessee recognizes assets and liabilities for leases with lease terms of more than

twelve

months and the recognition, presentation and measurement in the financial statements will depend on its classification as a finance or operating lease. In addition, the new guidance will require disclosures to help investors and other financial statement users better understand the amount, timing and uncertainty of cash flows arising from leases.

Lessor accounting remains largely unchanged from current U.S. GAAP, but does contain some targeted improvements to align with ASU

2014

-

09.

ASU

2016

-

02

is effective for fiscal years and interim periods within those fiscal years, beginning after

December 15, 2018,

using a modified retrospective approach, and early adoption is permitted. The Company is currently evaluating the impact of adopting this guidance.

In

August 2016,

the FASB issued ASU

2016

-

15,

"Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments," which addresses the diversity of practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows with respect to

eight

specific cash flow issues. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after

December 15, 2017.

The Company is currently evaluating the impact of adopting this guidance.

XML

Note 1 - Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Property, Plant and Equipment Useful Lives [Table Text Block]

	Range of Useful Lives (in years)
Data communications, office and other equipment	2	to	20
Buildings		20
Leasehold improvements	4	to	20
Capitalized software	5	to	7
Capital leases	4	to	6

XML

Note 3 - Inventories (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	Thousands of Yen
	2017		2018
Network equipment purchased for resale	¥	1,093,001	¥	1,053,574
Work in process		1,705,053		660,973
Total inventories	¥	2,798,054	¥	1,714,547

XML

Note 4 - Other Investments (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Available-for-sale Securities [Table Text Block]

	Thousands of Yen
March 31, 2017	Cost		Unrealized Gains		Unrealized Losses		Fair Value
Available-for-sale—Equity securities	¥	1,789,471	¥	3,880,414	¥	375	¥	5,669,510
Available-for-sale—Debt securities		100,300		10,530		-		110,830
	¥	1,889,771	¥	3,890,944	¥	375	¥	5,780,340
March 31, 2018
Available-for-sale—Equity securities	¥	1,651,181	¥	7,525,556	¥	699	¥	9,176,038
Available-for-sale—Debt securities		100,300		11,870		-		112,170
	¥	1,751,481	¥	7,537,426	¥	699	¥	9,288,208

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	Thousands of Yen
	Less than 12 Months				12 Months or More				Total
March 31, 2017	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Available-for-sale—Equity securities	¥	816	¥	5	¥	3,398	¥	370	¥	4,214	¥	375
March 31, 2018
Available-for-sale—Equity securities	¥	17,519	¥	699		-		-	¥	17,519	¥	699

XML

Note 5 - Allowance for Doubtful Accounts and Loans (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Allowance for Credit Losses on Financing Receivables [Table Text Block]

	Thousands of Yen
	Balance at Beginning of Year		Credits Charged Off			Provision for Doubtful Accounts		Other			Balance at End of Year
Year ended March 31, 2016	¥	148,245	¥	(45,108	)	¥	48,407	¥	(29	)	¥	151,515
Year ended March 31, 2017	¥	151,515	¥	(34,978	)	¥	68,300	¥	(84	)	¥	184,753
Year ended March 31, 2018	¥	184,753	¥	(94,521	)	¥	94,839	¥	31		¥	185,102

XML

Note 6 - Investments in Equity Method Investees (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	275,671	¥	287,812
Other current assets		-		889,061		2,253,882
Accounts payable		-		3,970,794		4,103,560
Capital lease obligations		-		2,771,532		3,088,795
Revenues	¥	3,129,622		3,440,263		3,902,856
Costs		24,268,440		31,991,750		36,729,517
Interest expense		30,370		48,234		64,795

Equity Method Investments [Table Text Block]

	Thousands of Yen
	2017					2018
Multifeed		34.00	%	¥	1,642,171		34.00	%	¥	1,806,472
i-revo		30.00			751,784		30.00			767,197
Trinity		33.75			183,403		33.75			227,470
Appiaries		49.00			16,409		-			-
BIZNET		40.00			182,514		40.00			249,840
KIS		39.30			55,627		39.30			59,467
Leap Solutions		40.00			227,430		40.00			201,448
JOCDN		50.00			90,837		20.00			132,270
DeCurret		-			-		35.00			1,802,149
Total				¥	3,150,175				¥	5,246,313

Equity Method Investee [Member]

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	150,755	¥	183,023
Accounts payable		-		50,733		98,306
Revenues	¥	666,554		683,332		863,818
Costs and expenses		502,340		527,431		1,107,344

XML

Note 7 - Property and Equipment (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Property, Plant and Equipment [Table Text Block]

	Thousands of Yen
	2017			2018
Data communications equipment	¥	15,013,565		¥	18,544,180
Office and other equipment		2,875,548			2,522,740
Land		537,889			2,038,726
Buildings		1,663,326			2,151,069
Leasehold improvements		4,061,909			4,182,013
Capitalized software		33,335,560			36,624,979
Assets under capital leases, primarily data communications equipment		32,854,630			35,821,498
Total		90,342,427			101,885,205
Less accumulated depreciation and amortization		(50,566,983	)		(55,470,955	)
Property and equipment—net	¥	39,775,444		¥	46,414,250

Schedule of Capitalized Software, Future Amortization Expense [Table Text Block]

Year Ending March 31	Thousands of Yen
2019	¥	3,689,048
2020		3,323,134
2021		2,744,928
2022		2,246,229
2023		1,275,916

XML

Note 8 - Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

	Thousands of Yen
	2017			2018
Intangible assets subject to amortization:
Customer relationships	¥	6,424,471		¥	6,175,193
Total		6,424,471			6,175,193
Less accumulated amortization
Customer relationships		(3,388,053	)		(3,504,234	)
Total		(3,388,053	)		(3,504,234	)
Intangible assets subject to amortization—net		3,036,418			2,670,959
Intangible assets not subject to amortization:
Telephone rights		35,599			33,709
Trademark		15,000			-
Goodwill		6,169,609			6,082,472
Total		6,220,208			6,116,181
Total intangible assets	¥	9,256,626		¥	8,787,140

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year Ending March 31	Thousands of Yen
2019	¥	355,410
2020		346,223
2021		336,787
2022		327,101
2023		318,665

Schedule of Goodwill [Table Text Block]

	Thousands of Yen
	Network Service and Systems Integration Business			ATM Operation Business		Total
Balance at March 31, 2016
Goodwill	¥	6,054,340		¥	235,551	¥	6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Balance at March 31, 2017
Goodwill		6,054,340			235,551		6,289,891
Accumulated impairment losses		(120,282	)		-		(120,282	)
		5,934,058			235,551		6,169,609
Acquisition		-			-		-
Impairment losses		-			-		-
Sale		(87,137	)		-		(87,137	)
Balance at March 31, 2018
Goodwill		5,967,203			235,551		6,202,754
Accumulated impairment losses		(120,282	)		-		(120,282	)
	¥	5,846,921		¥	235,551	¥	6,082,472

XML

Note 9 - Leases (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Lease Refundable Deposits [Table Text Block]

	Thousands of Yen
	2017		2018
Head office	¥	2,462,266	¥	2,745,034
Sales and subsidiaries offices		518,759		597,798
Others		79,340		79,611
Total refundable guarantee deposits	¥	3,060,365	¥	3,422,443

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

	Thousands of Yen
	Connectivity Lines Operating Leases		Other Operating Leases		Capital Leases
Year ending March 31:
2019	¥	585,818	¥	3,466,849	¥	5,884,743
2020		240,242		1,328,020		4,887,319
2021		22,510		361,100		3,743,032
2022		-		195,812		2,035,721
2023		-		169,144		504,935
2024 and thereafter		-		120,642		-
Total minimum lease payments	¥	848,570	¥	5,641,567		17,055,750
Less amounts representing interest						(479,149	)
Present value of net minimum capital lease payments						16,576,601
Less current portion						(5,655,875	)
Noncurrent portion					¥	10,920,726

Sales Type Lease [Member]

Notes Tables

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

	Thousands of Yen
	2017			2018
Year ending March 31:
2019				¥	818,208
2020					552,597
2021					503,456
2022					468,715
2023					45,767
Total minimum lease payments to be received*	¥	2,939,252		¥	2,388,743
Estimated residual value of leased property (unguaranteed)		-			-
Less unearned income		(66,934	)		(46,152	)
Net investment in sales-type leases		2,872,318			2,342,591
Less current portion		(824,636	)		(797,298	)
Non-current net investment in sales-type leases	¥	2,047,682		¥	1,545,293

XML

Note 10 - Asset Retirement Obligations (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Asset Retirement Obligations [Table Text Block]

	Thousands of Yen
	2017		2018
Balance at beginning of the year	¥	595,183	¥	639,494
Liabilities incurred		31,980		49,609
Liabilities settled		-		(7,608	)
Accretion expense		12,331		12,714
Balance at end of the year	¥	639,494	¥	694,209

XML

Note 11 - Borrowings (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

	Thousands of Yen
	2017		2018
Long-term installment payable at various dates through calendar 2024; interest payable at fixed rates; the weighted-average rates were 0.438% and 0.488% at March 31, 2017 and 2018, respectively.	¥	8,500,000	¥	15,500,000
Less current portion		-		-
Long-term borrowings, less current portion	¥	8,500,000	¥	15,500,000

Schedule of Maturities of Long-term Debt [Table Text Block]

	Thousands of Yen
Year ending March 31:
2020	¥	1,500,000
2021		1,830,000
2022		5,170,000
2023		1,500,000
2024		2,000,000
2025		3,500,000
Total	¥	15,500,000

XML

Note 12 - Income Taxes (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Income from operations before income tax expense and equity in net income of equity method investees:
Domestic	¥	6,460,898		¥	5,503,750		¥	7,732,535
Foreign		(267,564	)		(76,590	)		107,588
Total	¥	6,193,334		¥	5,427,160		¥	7,840,123
Income taxes ― current:
Domestic	¥	1,929,139		¥	2,307,523		¥	2,986,077
Foreign		5,277			11,700			22,695
Total	¥	1,934,416		¥	2,319,223		¥	3,008,772
Income taxes ― deferred:
Domestic	¥	255,992		¥	(95,638	)	¥	(301,900	)
Foreign		(6,877	)		1,295			(11,033	)
Total	¥	249,115		¥	(94,343	)	¥	(312,933	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	Thousands of Yen
	2017					2018
	Deferred Tax Assets			Deferred Tax Liabilities		Deferred Tax Assets			Deferred Tax Liabilities
Unrealized gains on available-for-sale securities		-		¥	1,222,283		-		¥	2,370,327
Capital leases	¥	158,928			-	¥	181,494			-
Accrued expenses		877,107			-		902,787			-
Retirement and pension cost		1,107,885			-		1,168,895			-
Allowance for doubtful accounts		68,530			-		69,004			-
Depreciation		299,956			-		458,099			-
Net loss on other investments		172,942			-		162,991			-
Net operating loss carryforwards		636,012			-		459,402			-
Transactions in transit*		-			98,308		-			60,451
Impairment loss on telephone rights		68,405			-		68,632			-
Accrued enterprise tax		139,050			-		189,460			-
Asset retirement obligation		201,441			-		218,675			-
Deferred revenue		363,765			-		302,654			-
Customer relationships		-			957,202		-			841,351
Tax deduction of goodwill		-			805,738		-			760,281
Trademark		-			4,725		-			-
Investments in equity method investees		-			324,528		-			420,121
Investments in funds		89,732			-		95,336			-
Asset retirement cost		-			148,261		-			149,833
Other		336,429			93,374		400,543			147,477
Total		4,520,182			3,654,419		4,677,972			4,749,841
Valuation allowance		(559,567	)		-		(433,110	)		-
Total	¥	3,960,615		¥	3,654,419	¥	4,244,862		¥	4,749,841

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Amount computed by using normal Japanese statutory tax rate	¥	2,074,767		¥	1,720,410		¥	2,485,319
Increase (decrease) in taxes resulting from:
Expenses not deductible for tax purpose		93,262			88,633			98,905
Inhabitant tax—per capita		39,538			46,822			38,161
Change in valuation allowance		15,696			(68,126	)		(21,173	)
Tax effects on investments in equity method investees		48,368			34,549			40,218
Enterprise tax—not based on income		146,883			268,545			257,203
Tax rate change		23,183			7,954			(26,485	)
Tax credit		(269,145	)		5,000			(164,525	)
Other—net		10,979			121,093			(11,784	)
Income tax expense as reported	¥	2,183,531		¥	2,224,880		¥	2,695,839

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Note 13 - Retirement and Pension Plans (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Service cost	¥	648,944		¥	737,290		¥	769,172
Interest cost		67,525			43,988			59,946
Expected return on plan assets		(87,909	)		(92,623	)		(105,419	)
Amortization of transition obligation		365			-			-
Amortization of actuarial loss (gain)		(2,971	)		24,584			5,489
Net periodic pension cost	¥	625,954		¥	713,239		¥	729,188

Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Net actuarial loss (gain)	¥	585,332		¥	(276,702	)	¥	(44,710	)
Amortization of transition obligation in net periodic pension cost		(365	)		-			-
Amortization of actuarial loss (gain)		2,971			(24,584	)		(5,489	)
Amounts recognized in other comprehensive income	¥	587,938		¥	(301,286	)	¥	(50,199	)
Total net periodic pension cost and amounts recognized in other comprehensive income	¥	1,213,892		¥	411,953		¥	678,989

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

	Thousands of Yen
	2017			2018
Change in benefit obligation:
Benefit obligation at beginning of year	¥	6,388,110		¥	6,777,223
Service cost		737,290			769,172
Interest cost		43,988			59,946
Actuarial gain		(263,016	)		(14,234	)
Benefit paid		(129,149	)		(146,715	)
Benefit obligation at end of year		6,777,223			7,445,392
Change in plan assets:
Fair value of plan assets at beginning of year		3,193,899			3,635,159
Actual return on plan assets		106,310			135,893
Employer contribution		404,795			432,459
Benefits paid		(69,845	)		(74,744	)
Fair value of plan assets at end of year		3,635,159			4,128,767
Funded status at end of year	¥	(3,142,064	)	¥	(3,316,625	)

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

	Thousands of Yen
	2017			2018
Accrued retirement and pension costs	¥	(3,142,064	)	¥	(3,316,625	)
Net amount recognized	¥	(3,142,064	)	¥	(3,316,625	)

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

	Thousands of Yen
	2017		2018
Net actuarial loss	¥	658,139	¥	607,939
Total	¥	658,139	¥	607,939

Schedule of Assumptions Used [Table Text Block]

	Benefit Obligations						Net Periodic Costs
	2017			2018			2016			2017			2018
Discount rate		0.9	%		0.8	%		1.3	%		0.7	%		0.9	%
Expected long-term rate of return on plan assets								3.0			2.9			2.9
Rate of increase in compensation		3.1			3.0			3.2			3.1			3.1

Schedule of Expected Benefit Payments [Table Text Block]

Years Ending March 31	Thousands of Yen
2019	¥	126,065
2020		144,733
2021		194,204
2022		270,389
2023		274,262
2024 - 2028		1,839,614
Total	¥	2,849,267

Schedule of Allocation of Plan Assets [Table Text Block]

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2017	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	528,083		-		-	¥	528,083
U.S. equity		159,618		-		-		159,618
Other equity―developed countries		91,087		-		-		91,087
Total equity securities		778,788		-		-		778,788
Debt securities:
Japanese government and municipalities		-	¥	632,216		-		632,216
Japanese corporate bonds―investment grade		-		290,360		-		290,360
U.S. government		-		127,659		-		127,659
Other government―developed countries		-		173,598		-		173,598
Residential mortgage-backed		-		26,749		-		26,749
Total debt securities		-		1,250,582		-		1,250,582
Other financial instruments*		-		1,464,874		-		1,464,874
Cash		140,915		-		-		140,915
Total assets at fair value	¥	919,703	¥	2,715,456		-	¥	3,635,159

Basis of Fair Value Measurement of Pension Plan Assets at March 31, 2018	Thousands of  Yen
	Level 1		Level 2		Level 3		Total
Equity securities:
Japanese equity	¥	606,612		-		-	¥	606,612
U.S. equity		185,164		-		-		185,164
Other equity―developed countries		102,448		-		-		102,448
Total equity securities		894,224		-		-		894,224
Debt securities:
Japanese government and municipalities		-	¥	786,055		-	¥	786,055
Japanese corporate bonds―investment grade		-		287,216		-		287,216
U.S. government		-		150,444		-		150,444
Other government―developed countries		-		208,011		-		208,011
Residential mortgage-backed		-		34,192		-		34,192
Total debt securities		-		1,465,918		-		1,465,918
Other financial instruments*		-		1,678,236		-		1,678,236
Cash		90,389		-		-		90,389
Total assets at fair value	¥	984,613	¥	3,144,154		-	¥	4,128,767

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Note 14 - Shareholders' Equity (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	2016			2017			2018
Assumptions:
Risk-free interest rate		0.818	%		-0.147	%		0.327	%
Expected lives (years)		15			15			15
Expected volatility		53.794	%		52.202	%		50.582	%
Expected dividends		1.023	%		1.045	%		1.316	%

Share-based Compensation, Stock Options, Activity [Table Text Block]

							Yen		Years		Thousands of Yen
	Number of Options			Number of Shares			Exercise Price		Remaining Life		Total Intrinsic Value
Unexercised options outstanding—March 31, 2016		557			111,400		¥	1
Granted		162			32,400			1
Exercised		-			-			-
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2017		719			143,800			1
Granted		169			33,800			1
Exercised		(12	)		(2,400	)		1
Forfeited or expired		-			-			-
Unexercised options outstanding—March 31, 2018		876			175,200			1
Exercisable options—March 31, 2018		707			141,400			1		25.80	¥	304,898
Expected to vest after July 15, 2018		169			33,800			1		29.31		72,882

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Note 15 - Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Comprehensive Income (Loss) [Table Text Block]

	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2016:
Foreign currency translation adjustments	¥	(67,652	)		-		¥	(67,652	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		(417,400	)	¥	128,977			(288,423	)
Less: Reclassification adjustments for gain (loss) included in net income		3,965			(1,328	)		2,637
Other		-			9,834			9,834
Net unrealized holding gain (loss) during the period		(413,435	)		137,483			(275,952	)
Defined benefit pension plans:
Amount arising during the period		(585,332	)		192,576			(392,756	)
Less: Reclassification adjustments for gain (loss) included in net income		(2,606	)		944			(1,662	)
Net defined benefit pension plans		(587,938	)		193,520			(394,418	)
Other comprehensive income (loss)	¥	(1,069,025	)	¥	331,003		¥	(738,022	)
Year ended March 31, 2017:
Foreign currency translation adjustments	¥	(188,036	)	¥	6,926		¥	(181,110	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		1,840,782			(579,846	)		1,260,936
Less: Reclassification adjustments for gain (loss) included in net income		27,846			(8,827	)		19,019
Other		-			140			140
Net unrealized holding gain (loss) during the period		1,868,628			(588,533	)		1,280,095
Defined benefit pension plans:
Amount arising during the period		276,702			(87,161	)		189,541
Less: Reclassification adjustments for gain (loss) included in net income		24,584			(10,079	)		14,505
Net defined benefit pension plans		301,286			(97,240	)		204,046
Other comprehensive income (loss)	¥	1,981,878		¥	(678,847	)	¥	1,303,031

	Thousands of Yen
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Year ended March 31, 2018:
Foreign currency translation adjustments	¥	2,081		¥	(2,985	)	¥	(904	)
Unrealized holding gain (loss) on securities:
Amount arising during the period		4,714,731			(1,485,140	)		3,229,591
Less: Reclassification adjustments for gain (loss) included in net income		(1,068,303	)		380,922			(687,381	)
Net unrealized holding gain (loss) during the period		3,646,428			(1,104,218	)		2,542,210
Defined benefit pension plans:
Amount arising during the period		44,710			(14,083	)		30,627
Less: Reclassification adjustments for gain (loss) included in net income		5,489			(2,250	)		3,239
Net defined benefit pension plans		50,199			(16,333	)		33,866
Other comprehensive income (loss)	¥	3,698,708		¥	(1,123,536	)	¥	2,575,172

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2015:	¥	1,544,946		¥	(229,203	)	¥	622,906		¥	1,938,649
Other comprehensive income (loss) before reclassifications		(278,589	)		(392,756	)		(71,610	)		(742,955	)
Amounts reclassified out of accumulated other comprehensive income		2,637			(1,662	)		-			975
Other comprehensive loss		(275,952	)		(394,418	)		(71,610	)		(741,980	)
Year ended March 31, 2016:	¥	1,268,994		¥	(623,621	)	¥	551,296		¥	1,196,669

	Thousands of Yen
	Unrealized holding gain on securities		Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2016:	¥	1,268,994	¥	(623,621	)	¥	551,296		¥	1,196,669
Other comprehensive loss before reclassifications		1,261,076		189,541			(181,110	)		1,269,507
Amounts reclassified out of accumulated other comprehensive income		19,019		14,505			-			33,524
Other comprehensive income (loss)		1,280,095		204,046			(181,110	)		1,303,031
Year ended March 31, 2017:	¥	2,549,089	¥	(419,575	)	¥	370,186		¥	2,499,700

	Thousands of Yen
	Unrealized holding gain on securities			Defined benefit pension plans			Foreign currency translation adjustments			Total
Year ended March 31, 2017:	¥	2,549,089		¥	(419,575	)	¥	370,186		¥	2,499,700
Other comprehensive income (loss) before reclassifications		3,229,591			30,627			(904	)		3,259,314
Amounts reclassified out of accumulated other comprehensive income		(687,381	)		3,239			-			(684,142	)
Other comprehensive income (loss)		2,542,210			33,866			(904	)		2,575,172
Year ended March 31, 2018:	¥	5,091,299		¥	(385,709	)	¥	369,282		¥	5,074,872

Reclassified Accumulated Other Comprehensive Income [Table Text Block]

	Thousands of Yen
	2016			2017			2018			Location
Other comprehensive income (loss) components:
Unrealized holding gain on securities		-		¥	2,708		¥	1,068,303		Net gain on sales of other investments
	¥	(3,965	)		(30,554	)		-		Impairment of other investments
		1,328			8,827			(380,922	)	Income tax expense
		(2,637	)		(19,019	)		687,381		Net income
Defined benefit pension plans		2,606			(24,584	)		(5,489	)	Net periodic pension costs (Note 13)
		(944	)		10,079			2,250		Income tax expense
		1,662			(14,505	)		(3,239	)	Net income
Total amount reclassified	¥	(975	)	¥	(33,524	)	¥	726,568

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Note 16 - Basic and Diluted Net Income Per Common Share (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Thousands of Yen
	2016		2017		2018
Numerator:
Net income attributable to Internet Initiative Japan Inc. ― basic and diluted	¥	4,038,282	¥	3,166,510	¥	5,108,949

	Number of Shares
	2016		2017		2018
Denominator:
Weighted-average common shares outstanding ― basic		45,950,098		45,652,981		45,062,878
Dilutive effect of stock options		93,285		119,489		152,808
Weighted-average common shares outstanding ― diluted		46,043,383		45,772,470		45,215,686

	Yen
	2016		2017		2018
Basic net income attributable to Internet Initiative Japan Inc. per common share	¥	87.88	¥	69.36	¥	113.37
Diluted net income attributable to Internet Initiative Japan Inc. per common share	¥	87.71	¥	69.18	¥	112.99

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Note 18 - Financial Instruments (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Financial Assets [Table Text Block]

	Thousands of Yen
	2017				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Other investments for which it is:
Practicable to estimate fair value	¥	5,780,340	¥	5,780,340	¥	9,288,208	¥	9,288,208
Not practicable		2,144,574		-		2,086,234		-
Noncurrent refundable insurance policies (other assets)		211,526		211,526		272,610		272,610
Long-term borrowings		8,500,000		8,485,311		15,500,000		15,437,103
Long-term accounts payable (other noncurrent liabilities)		1,468,183		1,466,952		896,810		895,770

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Note 19 - Fair Value Measurements (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Thousands of  Yen
March 31, 2017	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	5,669,510		-		-	¥	5,669,510
Available-for-sale securities— debt securities		-	¥	110,830		-		110,830
Total assets	¥	5,669,510	¥	110,830		-	¥	5,780,340

	Thousands of  Yen
March 31, 2018	Level 1		Level 2		Level 3		Total
Assets—
Available-for-sale securities— equity securities	¥	9,176,038		-		-	¥	9,176,038
Available-for-sale securities— debt securities		-	¥	112,170		-		112,170
Total assets	¥	9,176,038	¥	112,170		-	¥	9,288,208

Fair Value Measurements, Nonrecurring [Table Text Block]

	Thousands of Yen
March 31, 2017	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Trademark		-		-	¥	15,000	¥	81,000
		-		-	¥	15,000	¥	81,000

	Thousands of Yen
March 31, 2018	Level 1		Level 2		Level 3		Impairment Loss
Assets:
Non-marketable securities—equity securities		-		-	¥	17,616	¥	109,840
		-		-	¥	17,616	¥	109,840

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	Thousands of Yen
March 31, 2017	Fair value		Valuation technique	Unobservable inputs	Range
Trademark		¥15,000	Relief from	Discount Rate		6.8%
			royalty method	Royalty rate		0.1%

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Note 20 - Business Segments (Tables)

12 Months Ended

Mar. 31, 2018

Corporate and Other [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Thousands of Yen
	2016		2017		2018
Depreciation and amortization:
Network service and systems integration business	¥	9,377,657	¥	10,400,255	¥	11,900,494
ATM operation business		543,898		493,402		464,379
Consolidated total	¥	9,921,555	¥	10,893,657	¥	12,364,873

Segment Assets [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Thousands of Yen
	2017		2018
Segment assets:
Network service and systems integration business	¥	132,756,717	¥	150,229,527
ATM operation business		4,638,432		5,219,292
Elimination		-		(2,000,000	)
Consolidated total	¥	137,395,149	¥	153,448,819

Profit or Loss [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Operating income:
Network service and systems integration business	¥	5,127,807		¥	3,853,960		¥	5,430,148
ATM operation business		1,148,922			1,437,601			1,510,176
Elimination		(136,375	)		(157,254	)		(178,122	)
Consolidated total	¥	6,140,354		¥	5,134,307		¥	6,762,202

Revenues [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Thousands of Yen
	2016			2017			2018
Network service and systems integration business:
Customers	¥	136,759,130		¥	153,738,978		¥	172,019,965
Intersegment		383,058			387,178			350,155
Total		137,142,188			154,126,156			172,370,120
ATM operation business:
Customers		3,888,878			4,050,081			4,030,684
Intersegment		-			-			-
Total		3,888,878			4,050,081			4,030,684
Elimination		(383,058	)		(387,178	)		(350,155	)
Consolidated total	¥	140,648,008		¥	157,789,059		¥	176,050,649

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Note 22 - Related Party Transactions (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Thousands of Yen
	2016		2017		2018
Accounts receivable		-	¥	275,671	¥	287,812
Other current assets		-		889,061		2,253,882
Accounts payable		-		3,970,794		4,103,560
Capital lease obligations		-		2,771,532		3,088,795
Revenues	¥	3,129,622		3,440,263		3,902,856
Costs		24,268,440		31,991,750		36,729,517
Interest expense		30,370		48,234		64,795

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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018 JPY (¥)	Mar. 31, 2017 JPY (¥)
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	26.90%
Number of Operating Segments	2
Deferred Tax Assets, Net of Valuation Allowance, Current, Ending Balance		¥ 1,298,469
Deferred Tax Liabilities, Net, Current		¥ 108,994
Minimum [Member]
Systems Operation and Maintenance Contract Period	1 year
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum [Member]
Systems Operation and Maintenance Contract Period	5 years
Finite-Lived Intangible Asset, Useful Life	19 years

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Note 1 - Description of Business and Summary of Significant Accounting Policies - Useful Lives for Depreciation and Amortization by Major Asset Classes (Details)	12 Months Ended
	Mar. 31, 2018
Data Communications, Office and Other Equipment [Member] | Minimum [Member]
Useful Lives (Year)	2 years
Data Communications, Office and Other Equipment [Member] | Maximum [Member]
Useful Lives (Year)	20 years
Building [Member]
Useful Lives (Year)	20 years
Leasehold Improvements [Member] | Minimum [Member]
Useful Lives (Year)	4 years
Leasehold Improvements [Member] | Maximum [Member]
Useful Lives (Year)	20 years
Software and Software Development Costs [Member]
Useful Lives (Year)	6 years
Software and Software Development Costs [Member] | Minimum [Member]
Useful Lives (Year)	5 years
Software and Software Development Costs [Member] | Maximum [Member]
Useful Lives (Year)	7 years
Assets Held under Capital Leases [Member] | Minimum [Member]
Useful Lives (Year)	4 years
Assets Held under Capital Leases [Member] | Maximum [Member]
Useful Lives (Year)	6 years

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Note 2 - Business Combination and Transfer (Details Textual) ¥ in Thousands, xbrli-pure in Thousands	12 Months Ended
	Mar. 31, 2018 JPY (¥)	Mar. 31, 2017	Mar. 31, 2016
Number of Businesses Acquired	0	0	0
Goodwill, Written off Related to Sale of Business Unit	¥ 87,137
Trademarks [Member]
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	15,000
General and Administrative Expense [Member]
Gain (Loss) on Disposition of Stock in Subsidiary	¥ 44,877

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Note 3 - Inventories - Components of Inventories (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Network equipment purchased for resale	¥ 1,053,574	¥ 1,093,001
Work in process	660,973	1,705,053
Total inventories	¥ 1,714,547	¥ 2,798,054

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Note 4 - Other Investments (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Available-for-sale Debt Securities, Maturity Term	10 years
Proceeds from Sale of Available-for-sale Securities, Total	¥ 1,206,516	¥ 4,840	¥ 141,235
Available-for-sale Securities, Gross Realized Gains	1,068,303	2,708
Cost Method Investments	2,086,234	2,144,574
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total		¥ 30,554
Equity Securities [Member]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Total	¥ 109,840
Minimum [Member]
Investment, Fair Value, Percentage Below Cost	2.80%
Maximum [Member]
Investment, Fair Value, Percentage Below Cost	8.60%

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Note 4 - Other Investments - Securities Classified as Available-for-sale in Yen (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Available-for-sale-Cost	¥ 1,751,481	¥ 1,889,771
Available-for-sale-Unrealized Gains	7,537,426	3,890,944
Available-for-sale-Unrealized Losses	699	375
Available-for-sale-Fair Value	9,288,208	5,780,340
Equity Securities [Member]
Available-for-sale-Cost	1,651,181	1,789,471
Available-for-sale-Unrealized Gains	7,525,556	3,880,414
Available-for-sale-Unrealized Losses	699	375
Available-for-sale-Fair Value	9,176,038	5,669,510
Debt Securities [Member]
Available-for-sale-Cost	100,300	100,300
Available-for-sale-Unrealized Gains	11,870	10,530
Available-for-sale-Unrealized Losses
Available-for-sale-Fair Value	¥ 112,170	¥ 110,830

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Note 4 - Other Investments - Securities Classified as Available-for-sale in a Continuous Unrealized Loss Position in Yen (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Available-for-sale-Fair Value Less than 12 Months	¥ 17,519	¥ 816
Available-for-sale-Unrealized Losses Less than 12 Months	699	5
Available-for-sale-Fair Value 12 Months or More		3,398
Available-for-sale-Unrealized Losses 12 Months or More		370
Available-for-sale-Fair Value	17,519	4,214
Available-for-sale-Unrealized Losses	¥ 699	¥ 375

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Note 5 - Allowance for Doubtful Accounts and Loans - Analysis of Allowance for Doubtful Accounts and Loans in Yen (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Balance at Beginning of Year	¥ 184,753	¥ 151,515	¥ 148,245
Credits Charged Off	(94,521)	(34,978)	(45,108)
Provision for Doubtful Accounts	94,839	68,300	48,407
Other	31	(84)	(29)
Balance at End of Year	¥ 185,102	¥ 184,753	¥ 151,515

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Note 6 - Investments in Equity Method Investees (Details Textual) - JPY (¥) ¥ in Thousands	1 Months Ended		12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Proceeds from Equity Method Investment, Distribution			¥ 51,191	¥ 51,083	¥ 48,510
Payments to Acquire Equity Method Investments			2,004,808	99,000	¥ 338,166
Investments in Equity Method Investees [Member]
Equity-method Goodwill			¥ 7,197	¥ 7,197
Appiaries [Member]
Proceeds from Sale of Equity Method Investments		¥ 1,615
DeCurret [Member]
Payments to Acquire Equity Method Investments	¥ 1,830,000

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Note 6 - Investments in Equity Method Investees - Balances Associated With Equity Method Investees (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Revenues	¥ 176,050,649	¥ 157,789,059	¥ 140,648,008
Costs and expenses	169,288,447	152,654,752	134,507,654
Equity Method Investee [Member]
Accounts receivable	183,023	150,755
Accounts payable	98,306	50,733
Revenues	863,818	683,332	666,554
Costs and expenses	¥ 1,107,344	¥ 527,431	¥ 502,340

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Note 6 - Investments in Equity Method Investees - Equity Method Investees and Respective Ownership Percentages (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Equity method investment	¥ 5,246,313	¥ 3,150,175
Multifeed [Member]
Equity method percentage	34.00%	34.00%
Equity method investment	¥ 1,806,472	¥ 1,642,171
I-Revo [Member]
Equity method percentage	30.00%	30.00%
Equity method investment	¥ 767,197	¥ 751,784
Trinity [Member]
Equity method percentage	33.75%	33.75%
Equity method investment	¥ 227,470	¥ 183,403
Appiaries [Member]
Equity method percentage		49.00%
Equity method investment		¥ 16,409
BIZNET [Member]
Equity method percentage	40.00%	40.00%
Equity method investment	¥ 249,840	¥ 182,514
KIS [Member]
Equity method percentage	39.30%	39.30%
Equity method investment	¥ 59,467	¥ 55,627
Leap Solutions [Member]
Equity method percentage	40.00%	40.00%
Equity method investment	¥ 201,448	¥ 227,430
JOCDN [Member]
Equity method percentage	20.00%	50.00%
Equity method investment	¥ 132,270	¥ 90,837
DeCurret [Member]
Equity method percentage	35.00%
Equity method investment	¥ 1,802,149

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Note 7 - Property and Equipment (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Depreciation, Depletion and Amortization, Nonproduction, Total	¥ 11,999,414	¥ 10,513,162	¥ 9,533,541
Capitalized Computer Software, Accumulated Amortization	22,072,049	20,882,937
Capitalized Computer Software, Amortization	¥ 3,348,188	2,894,740
Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life	6 years
General and Administrative Expense [Member]
Gain (Loss) on Disposition of Assets, Total	¥ (99,953)	¥ (139,162)	¥ (27,950)

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Note 7 - Property and Equipment - Property and Equipment (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Property and equipment	¥ 101,885,205	¥ 90,342,427
Less accumulated depreciation and amortization	(55,470,955)	(50,566,983)
Property and equipment—net	46,414,250	39,775,444
Equipment [Member]
Property and equipment	18,544,180	15,013,565
Office Equipment [Member]
Property and equipment	2,522,740	2,875,548
Land [Member]
Property and equipment	2,038,726	537,889
Building [Member]
Property and equipment	2,151,069	1,663,326
Leasehold Improvements [Member]
Property and equipment	4,182,013	4,061,909
Software and Software Development Costs [Member]
Property and equipment	36,624,979	33,335,560
Assets Held under Capital Leases [Member]
Property and equipment	¥ 35,821,498	¥ 32,854,630

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Note 7 - Property and Equipment - Estimated Amortization Expense of Capitalized Software (Details) ¥ in Thousands	Mar. 31, 2018 JPY (¥)
2019	¥ 3,689,048
2020	3,323,134
2021	2,744,928
2022	2,246,229
2023	¥ 1,275,916

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Note 8 - Goodwill and Other Intangible Assets (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Amortization of Intangible Assets, Total	¥ 365,459	¥ 380,495
Goodwill, Impairment Loss	¥ 0	0	¥ 0
Trademarks [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		¥ 81,000

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Note 8 - Goodwill and Other Intangible Assets - Components of Intangible Assets (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Customer relationships	¥ 6,175,193	¥ 6,424,471
Accumulated amortization	(3,504,234)	(3,388,053)
Intangible assets subject to amortization—net	2,670,959	3,036,418
Telephone rights	33,709	35,599
Indefinite-Lived Trademarks		15,000
Goodwill	6,082,472	6,169,609	¥ 6,169,609
Total	6,116,181	6,220,208
Total intangible assets	8,787,140	9,256,626
Customer Relationships [Member]
Customer relationships	6,175,193	6,424,471
Accumulated amortization	¥ (3,504,234)	¥ (3,388,053)

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Note 8 - Goodwill and Other Intangible Assets - Estimated Aggregate Amortization Expense of Intangible Assets (Details) ¥ in Thousands	Mar. 31, 2018 JPY (¥)
2019	¥ 355,410
2020	346,223
2021	336,787
2022	327,101
2023	¥ 318,665

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Note 8 - Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Goodwill	¥ 6,202,754	¥ 6,289,891	¥ 6,289,891
Accumulated impairment losses	(120,282)	(120,282)	(120,282)
GOODWILL (Note 8)	6,082,472	6,169,609	6,169,609
Acquisition
Impairment losses	0	0	0
Sale	(87,137)
Network Service and Systems Integration Business [Member]
Goodwill	5,967,203	6,054,340	6,054,340
Accumulated impairment losses	(120,282)	(120,282)	(120,282)
GOODWILL (Note 8)	5,846,921	5,934,058	5,934,058
Acquisition
Impairment losses
Sale	(87,137)
ATM Operation Business [Member]
Goodwill	235,551	235,551	235,551
Accumulated impairment losses
GOODWILL (Note 8)	235,551	235,551	235,551
Acquisition
Impairment losses
Sale

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Note 9 - Leases (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating Leases, Income Statement, Sublease Revenue	¥ 54,385	¥ 52,928	¥ 41,002
Proceeds from Sale of Machinery and Equipment	3,197,334	3,635,690
Capital Leased Assets, Noncurrent, Fair Value Disclosure	35,821,498	32,854,630
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation	21,251,673	19,735,367
Capital Leases, Net Investment in Sales Type Leases, Executory Costs	1,515,645	645,166
Due March 2022 [Member]
Minimum Lease Payments, Sale Leaseback Transactions, Total		3,554,784
Due March 2023 [Member]
Minimum Lease Payments, Sale Leaseback Transactions, Total	3,118,075
Backbone Line [Member]
Operating Leases, Rent Expense, Total	3,318,831	3,421,807	3,638,063
Local Access Lines [Member]
Operating Leases, Rent Expense, Total	27,604,950	24,759,611	23,035,615
Other Lease and Rental [Member]
Operating Leases, Rent Expense, Total	¥ 7,613,522	¥ 7,082,157	¥ 6,880,307

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Note 9 - Leases - Refundable Guarantee Deposits (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Refundable guarantee deposits	¥ 3,422,443	¥ 3,060,365
Head Office [Member]
Refundable guarantee deposits	2,745,034	2,462,266
Sales and Subsidiaries Offices [Member]
Refundable guarantee deposits	597,798	518,759
Others [Member]
Refundable guarantee deposits	¥ 79,611	¥ 79,340

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Note 9 - Leases - Lessee Future Minimum Lease Payments (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Capital leases 2019	¥ 5,884,743
Capital leases 2020	4,887,319
Capital leases 2021	3,743,032
Capital leases 2022	2,035,721
Capital leases 2023	504,935
Capital leases 2023 and thereafter
Total minimum capital lease payments	17,055,750
Less amounts representing interest	(479,149)
Present value of net minimum capital lease payments	16,576,601
Less current portion	(5,655,875)	¥ (4,818,723)
Noncurrent portion	10,920,726	¥ 10,384,643
Connectivity Lines [Member]
Operating leases 2019	585,818
Operating leases 2020	240,242
Operating leases 2021	22,510
Operating leases 2022
Operating leases 2023
Operating leases 2023 and thereafter
Total minimum operating lease payments	848,570
Other Operating Leases [Member]
Operating leases 2019	3,466,849
Operating leases 2020	1,328,020
Operating leases 2021	361,100
Operating leases 2022	195,812
Operating leases 2023	169,144
Operating leases 2023 and thereafter	120,642
Total minimum operating lease payments	¥ 5,641,567

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Note 9 - Leases - Sales-type Leases (Details) - JPY (¥) ¥ in Thousands		Mar. 31, 2018	Mar. 31, 2017
2019		¥ 818,208
2020		552,597
2021		503,456
2022		468,715
2023		45,767
Total minimum lease payments to be received*	[1]	2,388,743	¥ 2,939,252
Less unearned income		(46,152)	(66,934)
Net investment in sales-type leases		2,342,591	2,872,318
Less current portion		(797,298)	(824,636)
Non-current net investment in sales-type leases		¥ 1,545,293	¥ 2,047,682

[1] Estimated executory costs, including profit thereon, of ¥645,166 thousand and ¥1,515,645 thousand were excluded from the total minimum lease payments to be received as of March 31, 2017 and 2018, respectively.

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Note 10 - Asset Retirement Obligations - Asset Retirement Obligations (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Balance at beginning of the year	¥ 639,494	¥ 595,183
Liabilities incurred	49,609	31,980
Liabilities settled	(7,608)
Accretion expense	12,714	12,331
Balance at end of the year	¥ 694,209	¥ 639,494

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Note 11 - Borrowings (Details Textual) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Short-term Debt, Weighted Average Interest Rate, at Point in Time	0.411%	0.40%
Line of Credit Facility, Maximum Borrowing Capacity	¥ 10,450,000
Accounts Payable, Interest-bearing, Interest Rate	0.50%
Other Noncurrent Liabilities [Member]
Accounts Payable, Interest-bearing, Noncurrent	¥ 896,810	¥ 1,468,183

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Note 11 - Borrowings - Long-term Borrowing (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Long-term installment payable at various dates through calendar 2024; interest payable at fixed rates; the weighted-average rates were 0.438% and 0.488% at March 31, 2017 and 2018, respectively.	¥ 15,500,000	¥ 8,500,000
Less current portion
Long-term borrowings, less current portion	¥ 15,500,000	¥ 8,500,000

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Note 11 - Borrowings - Long-term Borrowing (Details) (Parentheticals)	Mar. 31, 2018	Mar. 31, 2017
Weighted average rate	0.488%	0.438%

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Note 11 - Borrowings - Annual Maturities of Long-term Borrowing (Details) - JPY (¥) ¥ in Millions	Mar. 31, 2018	Mar. 31, 2017
2020	¥ 1,500
2021	1,830
2022	5,170
2023	1,500
2024	2,000
2025	3,500
Long-term installment payable at various dates through calendar 2024; interest payable at fixed rates; the weighted-average rates were 0.438% and 0.488% at March 31, 2017 and 2018, respectively.	¥ 15,500	¥ 8,500

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Note 12 - Income Taxes (Details Textual) - JPY (¥) ¥ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Increase in Deferred Tax Liability Net			¥ (26,485)	¥ 7,954	¥ 23,183
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			126,457	68,126	¥ 15,696
Undistributed Earnings of Foreign Subsidiaries	¥ 839,047		839,047
Operating Loss Carryforwards, No Expiration Period	251,000		251,000
Unrecognized Tax Benefits, Ending Balance	0		0	0
Prior Year Tax Credit Reversal				¥ 125,234
UNITED STATES
Operating Loss Carryforwards, Total	706,943		706,943
Other Countries [Member]
Operating Loss Carryforwards, Total	¥ 1,180,169		¥ 1,180,169
National Tax Agency, Japan [Member] | Earliest Tax Year [Member]
Open Tax Year			2017
Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Open Tax Year			2006
Domestic Tax Authority [Member] | National Tax Agency, Japan [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			31.70%	31.70%	33.50%
Domestic Tax Authority [Member] | National Tax Agency, Japan [Member] | Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		31.50%
Domestic Tax Authority [Member] | National Tax Agency, Japan [Member] | March 31, 2016 Amendment [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			31.10%
Domestic Tax Authority [Member] | National Tax Agency, Japan [Member] | March 31, 2016 Amendment [Member] | Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		30.90%

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Note 12 - Income Taxes - Income From Operations Before Income Tax Expense (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Domestic, equity method investee	¥ 7,732,535	¥ 5,503,750	¥ 6,460,898
Foreign, equity method investee	107,588	(76,590)	(267,564)
INCOME FROM OPERATIONS BEFORE INCOME TAX EXPENSE AND EQUITY IN NET INCOME OF EQUITY METHOD INVESTEES—(FORWARD)	7,840,123	5,427,160	6,193,334
Domestic, current	2,986,077	2,307,523	1,929,139
Foreign, current	22,695	11,700	5,277
Total, current	3,008,772	2,319,223	1,934,416
Domestic, deferred	(301,900)	(95,638)	255,992
Foreign, deferred	(11,033)	1,295	(6,877)
Total, deferred	¥ (312,933)	¥ (94,343)	¥ 249,115

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Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - JPY (¥) ¥ in Thousands		Mar. 31, 2018	Mar. 31, 2017
Unrealized gains on available-for-sale securities		¥ 2,370,327	¥ 1,222,283
Capital leases		181,494	158,928
Accrued expenses		902,787	877,107
Retirement and pension cost		1,168,895	1,107,885
Allowance for doubtful accounts		69,004	68,530
Depreciation		458,099	299,956
Net loss on other investments		162,991	172,942
Net operating loss carryforwards		459,402	636,012
Transactions in transit*	[1]
Transactions in transit*	[1]	60,451	98,308
Impairment loss on telephone rights		68,632	68,405
Accrued enterprise tax		189,460	139,050
Asset retirement obligation		218,675	201,441
Deferred revenue		302,654	363,765
Tax deduction of goodwill		760,281	805,738
Investments in equity method investees		420,121	324,528
Investments in funds		95,336	89,732
Asset retirement cost		149,833	148,261
Other deferred tax assets		400,543	336,429
Other deferred tax liabilities		147,477	93,374
Total deferred tax assets, gross		4,677,972	4,520,182
Total deferred tax liabilties, gross		4,749,841	3,654,419
Valuation allowance		(433,110)	(559,567)
Total deferred tax assets		4,244,862	3,960,615
Total deferred tax liabilities		4,749,841	3,654,419
Customer Relationships [Member]
Customer relationships
Intangible assets		841,351	957,202
Trademarks [Member]
Intangible assets			¥ 4,725

[1] This item arises from transactions between IIJ and foreign subsidiaries, which were recorded in the different periods as a result of the difference in each company's fiscal year-end.

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Note 12 - Income Taxes - Income Tax Reconciliation (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Amount computed by using normal Japanese statutory tax rate	¥ 2,485,319	¥ 1,720,410	¥ 2,074,767
Expenses not deductible for tax purpose	98,905	88,633	93,262
Inhabitant tax—per capita	38,161	46,822	39,538
Change in valuation allowance	(21,173)	(68,126)	15,696
Tax effects on investments in equity method investees	40,218	34,549	48,368
Enterprise tax—not based on income	257,203	268,545	146,883
Tax rate change	(26,485)	7,954	23,183
Tax credit	(164,525)	5,000	(269,145)
Other—net	(11,784)	121,093	10,979
Income tax expense as reported	¥ 2,695,839	¥ 2,224,880	¥ 2,183,531

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Note 13 - Retirement and Pension Plans (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016	Jun. 30, 2011
Defined Benefit Plan, Accumulated Benefit Obligation	¥ 4,979,785	¥ 4,411,815
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation	7,445,392	6,777,223
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets	4,128,767	3,635,159
Defined Benefit Plan, Plans with Benefit Obligations with No Plan Assets Aggregate Benefit Obligation	131,049	116,408
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	2,460
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	¥ 432,460
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	1.60%
Payment for Pension Benefits	¥ 154,681	146,975	¥ 138,372
Multiemployer Plan, Contributions by Employer	¥ 124,442	¥ 117,300	¥ 123,674
Multiemployer Plan Period Contributions, Percentage	5.00%	5.00%	5.00%
Multiemployer Plans, Plan Assets	¥ 238,628,525
IIJ Retirement Benefit Plan for Full Time Director Abolished [Member]
Liability, Other Retirement Benefits					¥ 255,330
Retirement Benefit Plan for Full-time Director, Abolished [Member]
Liability, Other Retirement Benefits	399,989	¥ 382,881
IIJ Retirement Benefit Plan for Full-time Auditors, Abolished [Member]
Liability, Other Retirement Benefits	¥ 8,020	¥ 8,020		¥ 8,020
Minimum [Member]
Multiemployer Plans Funded Status, Percentage		80.00%
Debt Securities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	63.00%
Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	35.00%
Other Financial Instruments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	2.00%
Contributions Allocated to Debt Securities Equity Securities and Other Financial Instruments [Member]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50.00%

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Note 13 - Retirement and Pension Plans - Net Periodic Pension Cost (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Service cost	¥ 769,172	¥ 737,290	¥ 648,944
Interest cost	59,946	43,988	67,525
Expected return on plan assets	(105,419)	(92,623)	(87,909)
Amortization of transition obligation			365
Amortization of actuarial loss (gain)	5,489	24,584	(2,971)
Net periodic pension cost	¥ 729,188	¥ 713,239	¥ 625,954

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Note 13 - Retirement and Pension Plans - Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net actuarial loss (gain)	¥ (44,710)	¥ (276,702)	¥ 585,332
Amortization of transition obligation in net periodic pension cost			(365)
Amortization of actuarial loss (gain)	(5,489)	(24,584)	2,971
Amounts recognized in other comprehensive income	(50,199)	(301,286)	587,938
Total net periodic pension cost and amounts recognized in other comprehensive income	¥ 678,989	¥ 411,953	¥ 1,213,892

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Note 13 - Retirement and Pension Plans - Change in Benefit Obligation and Plan Assets (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Benefit obligation at beginning of year	¥ 6,777,223	¥ 6,388,110
Service cost	769,172	737,290	¥ 648,944
Interest cost	59,946	43,988	67,525
Actuarial gain	(14,234)	(263,016)
Benefit paid	(146,715)	(129,149)
Benefit obligation at end of year	7,445,392	6,777,223	6,388,110
Fair value of plan assets at beginning of year	3,635,159	3,193,899
Actual return on plan assets	135,893	106,310
Employer contribution	432,459	404,795
Benefits paid	(74,744)	(69,845)
Fair value of plan assets at end of year	4,128,767	3,635,159	¥ 3,193,899
Funded status at end of year	¥ (3,316,625)	¥ (3,142,064)

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Note 13 - Retirement and Pension Plans - Amounts Recognized in Consolidated Balance Sheets (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Accrued retirement and pension costs	¥ (3,316,625)	¥ (3,142,064)
Net amount recognized	¥ (3,316,625)	¥ (3,142,064)

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Note 13 - Retirement and Pension Plans - Amounts Recognized in Accumulated Other Comprehensive Income (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Net actuarial loss	¥ 607,939	¥ 658,139
Net actuarial loss	¥ 607,939	¥ 658,139

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Note 13 - Retirement and Pension Plans - Actuarial Assumptions (Details)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Discount rate, benefit obligations	0.80%	0.90%
Discount rate, net periodic costs	0.90%	0.70%	1.30%
Expected long-term rate of return on plan assets, net periodic costs	2.90%	2.90%	3.00%
Rate of increase in compensation, benefit obligations	3.00%	3.10%
Rate of increase in compensation, net periodic costs	3.10%	3.10%	3.20%

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Note 13 - Retirement and Pension Plans - Benefit Payments Expected to Be Paid (Details) ¥ in Thousands	Mar. 31, 2018 JPY (¥)
2019	¥ 126,065
2020	144,733
2021	194,204
2022	270,389
2023	274,262
2024-2028	1,839,614
Total	¥ 2,849,267

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Note 13 - Retirement and Pension Plans - Basis of Fair Value Measurement of Pension Plan Assets (Details) - JPY (¥) ¥ in Thousands		Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Plan assets		¥ 4,128,767	¥ 3,635,159	¥ 3,193,899
Equity Securities [Member]
Plan assets		894,224	778,788
Equity Securities [Member] | Japanese Equity Securities [Member]
Plan assets		606,612	528,083
Equity Securities [Member] | US Equity Securities [Member]
Plan assets		185,164	159,618
Equity Securities [Member] | Other Equity Securities Developed Countries [Member]
Plan assets		102,448	91,087
Debt Securities [Member]
Plan assets		1,465,918	1,250,582
Debt Securities [Member] | Japanese Government and Municipalities [Member]
Plan assets		786,055	632,216
Debt Securities [Member] | Debt Security, Corporate, US [Member]
Plan assets		287,216	290,360
Debt Securities [Member] | US Government Agencies Debt Securities [Member]
Plan assets		150,444	127,659
Debt Securities [Member] | Other Government Debt Securities Developed Countries [Member]
Plan assets		208,011	173,598
Debt Securities [Member] | Residential Mortgage Backed Securities [Member]
Plan assets		34,192	26,749
Other Financial Instruments [Member]
Plan assets	[1]	1,678,236	1,464,874
Cash [Member]
Plan assets		90,389	140,915
Fair Value, Inputs, Level 1 [Member]
Plan assets		984,613	919,703
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Plan assets		894,224	778,788
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Japanese Equity Securities [Member]
Plan assets		606,612	528,083
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | US Equity Securities [Member]
Plan assets		185,164	159,618
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Other Equity Securities Developed Countries [Member]
Plan assets		102,448	91,087
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Japanese Government and Municipalities [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Debt Security, Corporate, US [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | US Government Agencies Debt Securities [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Other Government Debt Securities Developed Countries [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member] | Residential Mortgage Backed Securities [Member]
Plan assets
Fair Value, Inputs, Level 1 [Member] | Other Financial Instruments [Member]
Plan assets	[1]
Fair Value, Inputs, Level 1 [Member] | Cash [Member]
Plan assets		90,389	140,915
Fair Value, Inputs, Level 2 [Member]
Plan assets		3,144,154	2,715,456
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Japanese Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | US Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Other Equity Securities Developed Countries [Member]
Plan assets
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Plan assets		1,465,918	1,250,582
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Japanese Government and Municipalities [Member]
Plan assets		786,055	632,216
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Debt Security, Corporate, US [Member]
Plan assets		287,216	290,360
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | US Government Agencies Debt Securities [Member]
Plan assets		150,444	127,659
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Other Government Debt Securities Developed Countries [Member]
Plan assets		208,011	173,598
Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member] | Residential Mortgage Backed Securities [Member]
Plan assets		34,192	26,749
Fair Value, Inputs, Level 2 [Member] | Other Financial Instruments [Member]
Plan assets	[1]	1,678,236	1,464,874
Fair Value, Inputs, Level 2 [Member] | Cash [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Japanese Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | US Equity Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Other Equity Securities Developed Countries [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Japanese Government and Municipalities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Debt Security, Corporate, US [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | US Government Agencies Debt Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Other Government Debt Securities Developed Countries [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Debt Securities [Member] | Residential Mortgage Backed Securities [Member]
Plan assets
Fair Value, Inputs, Level 3 [Member] | Other Financial Instruments [Member]
Plan assets	[1]
Fair Value, Inputs, Level 3 [Member] | Cash [Member]
Plan assets

[1] Other financial instruments are life insurance pooled investment portfolios.

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Note 14 - Shareholders' Equity (Details Textual) - JPY (¥) ¥ / shares in Units, ¥ in Thousands										12 Months Ended
	Nov. 07, 2017	Jul. 14, 2017	Jun. 28, 2017	Nov. 04, 2016	Jul. 11, 2016	Jun. 24, 2016	Nov. 09, 2015	Jul. 13, 2015	Jun. 26, 2015	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Jun. 28, 2011	Jun. 28, 2006
Net Assets Minimum Requirement After Dividends										¥ 3,000
Adjustments to Additional Paid in Capital to Eliminate Accumulated Deficit														¥ 21,980,395
Adjustments Common Stock to Eliminate Accumulated Deficit														¥ 2,539,222
Percentage of Dividends Appropriated as Legal Reserve										10.00%
Additional Paid in Capital Percentage of Common Stock										25.00%
Retained Earnings Available for Dividends Under the Company Act										¥ 27,090,361
Retained Earnings, Undistributed Earnings from Equity Method Investees										¥ 1,075,129
Common Stock, Dividends, Per Share, Declared	¥ 13.50		¥ 13.50	¥ 13.50		¥ 11	¥ 11		¥ 11
Dividends, Total	¥ 608,349		¥ 608,317	¥ 620,361		¥ 505,480	¥ 505,479		¥ 505,365
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance											¥ 1	¥ 1	¥ 1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross										169	162
Allocated Share-based Compensation Expense, Total										¥ 57,321	¥ 57,678	¥ 55,337
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total										¥ 14,247
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition										90 days
Directors and Executive Officers [Member]
Options Exercisable Service Period												1 year
Options Exercisable Expiration Period												29 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		169			162			151
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		¥ 337,200			¥ 360,000			¥ 369,200

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Note 14 - Shareholders' Equity - Black-Scholes Option-Pricing Model Assumptions (Details)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Risk-free interest rate	0.327%	(0.147%)	0.818%
Expected lives (years) (Year)	15 years	15 years	15 years
Expected volatility	50.582%	52.202%	53.794%
Expected dividends	1.316%	1.045%	1.023%

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Note 14 - Shareholders' Equity - Stock Acquisition Rights Plan (Details) - JPY (¥) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018
Unexercised options outstanding (in shares)	719	557
Unexercised options outstanding (in shares)	143,800	111,400
Unexercised options outstanding (in JPY per share)	¥ 1	¥ 1
Granted (in shares)	169	162
Granted (in shares)	33,800	32,400
Granted (in JPY per share)	¥ 1	¥ 1
Exercised (in shares)	(12)
Exercised (in shares)	(2,400)
Exercised (in JPY per share)	¥ 1
Unexercised options outstanding (in shares)	876	719
Unexercised options outstanding (in shares)	175,200	143,800
Unexercised options outstanding (in JPY per share)		¥ 1
Exercised (in shares)	(2,400)
Unexercised options outstanding (in JPY per share)	¥ 1
Exercisable options—March 31, 2018 (in shares)			707
Exercisable options—March 31, 2018 (in shares)			141,400
Exercisable options—March 31, 2018 (in JPY per share)	¥ 1		¥ 1
Exercisable options—March 31, 2018 (Year)	25 years 292 days
Exercisable options—March 31, 2018			¥ 304,898
Expected to vest after July 15, 2018 (in shares)			169
Expected to vest after July 15, 2018 (in shares)			33,800
Expected to vest after July 15, 2018 (in JPY per share)			¥ 1
Expected to vest after July 15, 2018 (Year)	29 years 113 days
Expected to vest after July 15, 2018			¥ 72,882

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Note 15 - Other Comprehensive Income (Loss) - Tax Effects Allocated to Each Component of Other Comprehensive Income (Loss) (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Foreign currency translation adjustments, before tax	¥ 2,081	¥ (188,036)	¥ (67,652)
Foreign currency translation adjustments, net of tax	(904)	(181,110)	(67,652)
Amount arising during the period, before tax	4,714,731	1,840,782	(417,400)
Amount arising during the period, tax	(1,485,140)	(579,846)	128,977
Amount arising during the period, net of tax	3,229,591	1,260,936	(288,423)
Less: Reclassification adjustments for gain (loss) included in net income	(1,068,303)	27,846	3,965
Less: Reclassification adjustments for gain (loss) included in net income	380,922	(8,827)	(1,328)
Less: Reclassification adjustments for gain (loss) included in net income	(687,381)	19,019	2,637
Other, tax		140	9,834
Other, net of tax		140	9,834
Net unrealized holding gain (loss) during the period, before tax	3,646,428	1,868,628	(413,435)
Net unrealized holding gain (loss) during the period, tax	(1,104,218)	(588,533)	137,483
Unrealized holding gain (loss) on securities	2,542,210	1,280,095	(275,952)
Amount arising during the period, before tax	44,710	276,702	(585,332)
Amount arising during the period, tax	(14,083)	(87,161)	192,576
Amount arising during the period, net of tax	30,627	189,541	(392,756)
Less: Reclassification adjustments for gain (loss) included in net income	5,489	24,584	(2,606)
Less: Reclassification adjustments for gain (loss) included in net income	(2,250)	(10,079)	944
Less: Reclassification adjustments for gain (loss) included in net income	3,239	14,505	(1,662)
Net defined benefit pension plans, before tax	50,199	301,286	(587,938)
Net defined benefit pension plans, tax	(16,333)	(97,240)	193,520
Net defined benefit pension plans, net of tax	33,866	204,046	(394,418)
Other comprehensive income (loss), before tax	3,698,708	1,981,878	(1,069,025)
Other comprehensive income (loss), tax	(1,123,536)	(678,847)	331,003
Other comprehensive loss, net of tax	2,575,172	1,303,031	¥ (738,022)
Foreign currency translation adjustments	¥ (2,985)	¥ 6,926

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Note 15 - Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Balance	¥ 67,380,200	¥ 65,343,975	¥ 62,843,780
Other comprehensive loss	2,575,172	1,303,031	(738,022)
Balance	73,988,557	67,380,200	65,343,975
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	2,549,089	1,268,994	1,544,946
Other comprehensive income (loss) before reclassifications	3,229,591	1,261,076	(278,589)
Amounts reclassified out of accumulated other comprehensive income	(687,381)	19,019	2,637
Other comprehensive loss	2,542,210	1,280,095	(275,952)
Balance	5,091,299	2,549,089	1,268,994
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(419,575)	(623,621)	(229,203)
Other comprehensive income (loss) before reclassifications	30,627	189,541	(392,756)
Amounts reclassified out of accumulated other comprehensive income	3,239	14,505	(1,662)
Other comprehensive loss	33,866	204,046	(394,418)
Balance	(385,709)	(419,575)	(623,621)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	370,186	551,296	622,906
Other comprehensive income (loss) before reclassifications	(904)	(181,110)	(71,610)
Amounts reclassified out of accumulated other comprehensive income
Other comprehensive loss	(904)	(181,110)	(71,610)
Balance	369,282	370,186	551,296
AOCI Attributable to Parent [Member]
Balance	2,499,700	1,196,669	1,938,649
Other comprehensive income (loss) before reclassifications	3,259,314	1,269,507	(742,955)
Amounts reclassified out of accumulated other comprehensive income	(684,142)	33,524	975
Other comprehensive loss	2,575,172	1,303,031	(741,980)
Balance	¥ 5,074,872	¥ 2,499,700	¥ 1,196,669

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Note 15 - Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Impairment of other investments	¥ (109,840)	¥ (30,554)	¥ (14,729)
Income tax expense	2,695,839	2,224,880	2,183,531
Net income	5,278,940	3,332,071	4,190,022
Reclassification out of Accumulated Other Comprehensive Income [Member]
Total amount reclassified	726,568	(33,524)	(975)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Unrealized holding gain on securities	1,068,303	2,708
Impairment of other investments		(30,554)	(3,965)
Income tax expense	(380,922)	8,827	1,328
Net income	687,381	(19,019)	(2,637)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Income tax expense	2,250	10,079	(944)
Net income	(3,239)	(14,505)	1,662
Defined benefit pension plans	¥ (5,489)	¥ (24,584)	¥ 2,606

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Note 16 - Basic and Diluted Net Income Per Common Share - Earnings Per Share (Details) - JPY (¥) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net income attributable to Internet Initiative Japan Inc. - basic and diluted	¥ 5,108,949	¥ 3,166,510	¥ 4,038,282
Weighted-average common shares outstanding - basic (in shares)	45,062,878	45,652,981	45,950,098
Dilutive effect of stock options (in shares)	152,808	119,489	93,285
Weighted-average common shares outstanding - diluted (in shares)	45,215,686	45,772,470	46,043,383
Basic net income attributable to Internet Initiative Japan Inc. per common share (in JPY per share)	¥ 113.37	¥ 69.36	¥ 87.88
Diluted net income attributable to Internet Initiative Japan Inc. per common share (in JPY per share)	¥ 112.99	¥ 69.18	¥ 87.71

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Note 17 - Commitments And Contingent Liabilities (Details Textual) ¥ in Thousands, $ in Thousands	60 Months Ended	143 Months Ended
	Mar. 31, 2018 JPY (¥)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Apr. 30, 2013 JPY (¥)
May 2006, January 2007, January 2008 and January 2015 Agreements [Member]
Contractual Obligation, Total		$ 20,000
Payments to Acquire Investments, Total		$ 16,357
May 2006, January 2007, January 2008 and January 2015 Agreements [Member] | Investment Per Fund [Member]
Contractual Obligation, Total			$ 5,000
April 2013 Agreement [Member]
Contractual Obligation, Total | ¥				¥ 100,000
Payments to Acquire Investments, Total | ¥	¥ 92,816

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Note 18 - Financial Instruments (Details Textual) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Non-marketable Equity Securities [Member]
Equity Securities without Readily Determinable Fair Value, Amount	¥ 1,013,806	¥ 1,123,620
Investments in Funds [Member]
Equity Securities without Readily Determinable Fair Value, Amount	¥ 1,072,428	¥ 1,020,954

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Note 18 - Financial Instruments - Carrying Amounts and Fair Value of Financial Instruments (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Reported Value Measurement [Member]
Practicable to estimate fair value	¥ 9,288,208	¥ 5,780,340
Not practicable	2,086,234	2,144,574
Noncurrent refundable insurance policies (other assets)	272,610	211,526
Long-term borrowings	15,500,000	8,500,000
Long-term accounts payable (other noncurrent liabilities)	896,810	1,468,183
Estimate of Fair Value Measurement [Member]
Practicable to estimate fair value	9,288,208	5,780,340
Noncurrent refundable insurance policies (other assets)	272,610	211,526
Long-term borrowings	15,437,103	8,485,311
Long-term accounts payable (other noncurrent liabilities)	¥ 895,770	¥ 1,466,952

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Note 19 - Fair Value Measurements (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Indefinite-Lived Trademarks		¥ 15,000
Non-marketable Equity Securities [Member]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Total	109,840
Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Total	109,840
Other Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Securities Owned Not Readily Marketable, Total		127,456
Security Owned Not Readily Marketable, Fair Value	17,616
Trademarks [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		81,000
Trademarks [Member] | Fair Value, Measurements, Nonrecurring [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		¥ 81,000
Fair Value, Inputs, Level 3 [Member]
Indefinite-Lived Trademarks			¥ 96,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Security Owned Not Readily Marketable, Fair Value	¥ 17,616

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Note 19 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis in Yen (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Available-for-sale securities— equity securities	¥ 9,176,038	¥ 5,669,510
Available-for-sale securities— debt securities	112,170	110,830
Total assets	9,288,208	5,780,340
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities— equity securities	9,176,038	5,669,510
Available-for-sale securities— debt securities
Total assets	9,176,038	5,669,510
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities— equity securities
Available-for-sale securities— debt securities	112,170	110,830
Total assets	112,170	110,830
Fair Value, Inputs, Level 3 [Member]
Available-for-sale securities— equity securities
Available-for-sale securities— debt securities
Total assets

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Note 19 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Non-marketable Equity Securities [Member]
Non-marketable securities—equity securities, impairment loss	¥ 109,840
Fair Value, Measurements, Nonrecurring [Member]
Assets, impairment loss	109,840	¥ 81,000
Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Non-marketable securities—equity securities, impairment loss	109,840
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets, fair value
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Non-marketable securities—equity securities, fair value
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets, fair value
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Non-marketable securities—equity securities, fair value
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets, fair value	17,616	15,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Non-marketable Equity Securities [Member]
Non-marketable securities—equity securities, fair value	¥ 17,616
Trademarks [Member]
Trademark, impairment loss		81,000
Trademarks [Member] | Fair Value, Measurements, Nonrecurring [Member]
Trademark, impairment loss		81,000
Trademarks [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Trademark, fair value
Trademarks [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Trademark, fair value
Trademarks [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Trademark, fair value		¥ 15,000

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Note 19 - Fair Value Measurements - Significant Unobservable Inputs of Level 3 Non-recurring Measurements (Details) - Fair Value, Inputs, Level 3 [Member] - Valuation, Income Approach [Member] - Trademarks [Member] - Fair Value, Measurements, Nonrecurring [Member] ¥ in Millions	Mar. 31, 2017 JPY (¥)
Trademark, fair value	¥ 15
Measurement Input, Discount Rate [Member]
Trademark, measurement input	6.8
Measurement Input, Royalty Rate [Member]
Trademark, measurement input	0.1

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Note 20 - Business Segments - Segment Revenues (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Revenues	¥ 176,050,649	¥ 157,789,059	¥ 140,648,008
Intersegment Eliminations [Member]
Revenues	(350,155)	(387,178)	(383,058)
Network Service and Systems Integration Business [Member]
Revenues	172,370,120	154,126,156	137,142,188
Network Service and Systems Integration Business [Member] | Customers [Member]
Revenues	172,019,965	153,738,978	136,759,130
Network Service and Systems Integration Business [Member] | Intersegment [Member]
Revenues	350,155	387,178	383,058
ATM Operation Business [Member]
Revenues	4,030,684	4,050,081	3,888,878
ATM Operation Business [Member] | Customers [Member]
Revenues	4,030,684	4,050,081	3,888,878
ATM Operation Business [Member] | Intersegment [Member]
Revenues

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Note 20 - Business Segments - Segment Profit or Loss (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating Income (Loss)	¥ 6,762,202	¥ 5,134,307	¥ 6,140,354
Intersegment Eliminations [Member]
Operating Income (Loss)	(178,122)	(157,254)	(136,375)
Network Service and Systems Integration Business [Member]
Operating Income (Loss)	5,430,148	3,853,960	5,127,807
ATM Operation Business [Member]
Operating Income (Loss)	¥ 1,510,176	¥ 1,437,601	¥ 1,148,922

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Note 20 - Business Segments - Segment Assets (Details) - JPY (¥) ¥ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Segment assets	¥ 153,448,819	¥ 137,395,149
Intersegment Eliminations [Member]
Segment assets	(2,000,000)
Network Service and Systems Integration Business [Member]
Segment assets	150,229,527	132,756,717
ATM Operation Business [Member]
Segment assets	¥ 5,219,292	¥ 4,638,432

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Note 20 - Business Segments - Other Significant Segment Items (Details) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Depreciation and amortization	¥ 12,364,873	¥ 10,893,657	¥ 9,921,555
Network Service and Systems Integration Business [Member]
Depreciation and amortization	11,900,494	10,400,255	9,377,657
ATM Operation Business [Member]
Depreciation and amortization	¥ 464,379	¥ 493,402	¥ 543,898

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Note 21 - Advertising Expenses (Details Textual) - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Advertising Expense	¥ 1,459,747	¥ 953,632	¥ 815,439

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Note 22 - Related Party Transactions (Details Textual) - NTT [Member]	Mar. 31, 2018
Percentage of Shares Owned By NTT Group	26.00%
Percentage of Voting Shares Owned By NTT Group	26.90%

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Note 22 - Related Party Transactions - Related Party Transactions (Details) - NTT [Member] - JPY (¥) ¥ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Accounts receivable	¥ 287,812	¥ 275,671
Other current assets	2,253,882	889,061
Accounts payable	4,103,560	3,970,794
Capital lease obligations	3,088,795	2,771,532
Revenues	3,902,856	3,440,263	3,129,622
Costs	36,729,517	31,991,750	24,268,440
Interest expense	¥ 64,795	¥ 48,234	¥ 30,370

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Note 23 - Subsequent Events (Details Textual) - JPY (¥) ¥ / shares in Units, ¥ in Thousands	Jun. 28, 2018	Nov. 07, 2017	Jun. 28, 2017	Nov. 04, 2016	Jun. 24, 2016	Nov. 09, 2015	Jun. 26, 2015
Common Stock, Dividends, Per Share, Declared		¥ 13.50	¥ 13.50	¥ 13.50	¥ 11	¥ 11	¥ 11
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared	¥ 13.50
Dividends, Common Stock, Cash	¥ 608,349