UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2022

Commission File Number 001-33098

Mizuho Financial Group, Inc.

(Translation of registrant’s name into English)

5-5, Otemachi 1-chome

Chiyoda-ku, Tokyo 100-8176

Japan

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.    Form 20-F  ☒    Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

This report on Form 6-K shall be deemed to be incorporated by reference into the prospectus forming a part of Mizuho Financial Group, Inc.’s Registration Statement on Form F-3 (File No. 333-266555) and to be a part of such prospectus from the date on which this report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

EXHIBITS

Exhibit Number
15.	Acknowledgment Letter of Ernst & Young ShinNihon LLC
101.INS	Inline XBRL Instance Document—the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH	Inline XBRL Taxonomy Extension Schema
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase
104	The cover page for the Company’s Interim Report on Form 6-K for the six months ended September 30, 2022, has been formatted in Inline XBRL

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date:	December 28, 2022
Mizuho Financial Group, Inc.
By:	/s/    Masahiro Kihara
Name:	Masahiro Kihara
Title:	President & Group CEO

Unless otherwise specified, for purposes of this report, we have presented our financial information in accordance with accounting principles generally accepted in the United States, or U.S. GAAP.

Table of Contents

	Page
Recent Developments		2
Accounting Changes		5
Operating Results		6
Business Segments Analysis		10
Financial Condition		14
Liquidity		21
Capital Adequacy		24
Consolidated Balance Sheets (Unaudited)		F-1
Consolidated Statements of Income (Unaudited)		F-3
Consolidated Statements of Comprehensive Income (Unaudited)		F-4
Consolidated Statements of Equity (Unaudited)		F-5
Consolidated Statements of Cash Flows (Unaudited)		F-6
Notes to Consolidated Financial Statements (Unaudited)		F-7

1

Recent Developments

The following is a summary of significant business developments since March 31, 2022 relating to Mizuho Financial Group, Inc.

Operating Environment

As to the recent economic environment, the outlook for the global economy remains uncertain due to growing inflationary pressures, particularly in the United States, stagnant consumption and trade resulting from strict quarantine measures in China, and the global surge in commodity and resource prices due to the situation in Ukraine.

In Japan, although consumer confidence has weakened as a result of a decline in employee income due to the rise in import prices caused by the surging prices of commodities and resources, and the continuing depreciation of the Japanese yen, the economy has showed signs of gradual recovery, mainly in terms of consumer spending related to services, owing to the relaxation of activity restrictions and other factors. However, there have been concerns that corporate profits and consumption are coming under pressure from the further rise in import prices and slowdown in overseas economies.

In the United States, while there have been wage increases and other efforts to attract and retain workers due to strong labor demand and labor-supply constraints stemming from the spread of COVID-19 and other factors, inflation has been accelerating in many categories, which has led to a slower recovery in consumer spending. In response to the recent persistent inflationary pressures, the Federal Reserve Board (“FRB”) decided to raise interest rates by 0.75% at the meeting of the Federal Open Market Committee (“FOMC”) in November, as it did in June, July and September, and by 0.50% at the meeting of the FOMC in December, and has maintained its sense of caution. As there are also concerns that rising prices and interest rate hikes will further depress the economy, the outlook for the U.S. economy remains uncertain.

In Europe, the surge in resource prices due to the situation in Ukraine and supply constraints have been causing slower economic growth and accelerating inflation. The European Central Bank (“ECB”) ended its monetary easing policy and turned to monetary tightening in July, starting with a 0.50% rate hike. Thereafter, the ECB decided to raise interest rates by 0.75% in September and October, and by 0.50% in December, and has continued with significant rate hikes. There is growing concern that the European economy will slow in the future due to the protraction of the situation in Ukraine and sluggish consumption caused by interest rate hikes while wages are not rising.

In Asia, in addition to the prolonged slump in real estate investment in China, consumer confidence has remained weak due to the continuation of strict restrictions on activity, such as lockdowns. In addition, conflicts between the United States and China continue to pose a high degree of uncertainty with respect to China’s trade and national security.

In emerging countries, although the economy has shown signs of recovery owing to the relaxation of restrictions on activity, recent developments have shown the effects of the surge in commodity and resource prices due to the situation in Ukraine, inflation caused by currency depreciation as a result of U.S. interest rate hikes, and slowdown in the global economy. There are concerns about a future economic slowdown, especially in countries that lack natural resources or have limited capacity for fiscal stimulus.

As for the future outlook of the global economy, uncertainty is expected to continue due to global monetary tightening and sluggish consumption in China. In addition, depending on the circumstances, such as a protraction of the situation in Ukraine or worse-than-expected inflation, particularly in the United States, there are concerns about financial and capital market turmoil and the risk of further economic downturn, which may also prolong the slowdown of the Japanese economy.

2

Key indicators of Japanese economic conditions in recent periods include the following:

• Japan’s real gross domestic product on a quarterly basis, compared to the corresponding period of the previous year, increased by 1.5% in the third quarter of calendar year 2022. Japan’s real gross domestic product on a quarterly basis, compared to the corresponding period of the previous year, decreased consecutively from the fourth quarter of calendar year 2019 through the first quarter of calendar year 2021, and increased consecutively from the second quarter of calendar year 2021 through the third quarter of calendar year 2022.

• In September 2016, the Bank of Japan (“BOJ”) introduced “quantitative and qualitative monetary easing with yield curve control” by strengthening its two previous policy frameworks, namely the “quantitative and qualitative monetary easing (“QQE”)” and the “QQE with a negative interest rate.” These policies aimed to drive the observed consumer price index to a level exceeding the price stability target of 2% and to maintain the index above that target in a stable manner. Under the new policy framework, the BOJ set a guideline for market operations: regarding short-term interest rates, the BOJ will apply an interest rate of negative 0.1% to certain excess balances in current accounts held by financial institutions at the BOJ; and regarding long-term interest rates, it would purchase Japanese government bonds to control long-term interest rates so that the yield of 10-year Japanese government bonds will remain at around 0%.

In July 2018, the BOJ decided to strengthen its commitment to achieving its price stability target by introducing forward guidance for policy rates and to enhance the sustainability of “quantitative and qualitative monetary easing with yield curve control,” stating that the yield of 10-year Japanese government bonds could move upwards and downwards from the level of around 0% to some extent, mainly depending on developments in economic activity and prices. In October 2019, the BOJ decided on new forward guidance for policy rates, in respect of which, the BOJ stated its expectation that short-term and long-term interest rates would remain at their present or lower levels as long as it is necessary to pay close attention to the possibility that the momentum toward achieving the price stability target will be lost.

In March 2020, in light of the impact of the spread of COVID-19, the BOJ judged it appropriate to enhance monetary easing through (1) the further ample supply of funds by conducting various operations including purchases of Japanese government bonds and U.S. dollar funds-supplying operations, (2) measures to facilitate corporate financing including the introduction of the “special funds-supplying operations to facilitate corporate financing regarding the novel coronavirus (COVID-19)” and (3) active purchases of exchange-traded funds and Japan real estate investment trusts.

Furthermore, in April 2020, the BOJ judged it appropriate to enhance monetary easing through (1) an increase in purchases of commercial paper and corporate bonds, (2) the strengthening of the “special funds-supplying operations to facilitate corporate financing regarding the novel coronavirus (COVID-19)” and (3) further active purchases of Japanese government bonds and treasury discount bills. In December 2021, the BOJ decided to extend the “special funds-supplying operations to facilitate corporate financing regarding the novel coronavirus (COVID-19)” in part by six months until the end of September 2022. In March 2022, the BOJ completed its additional purchases of commercial paper and corporate bonds as scheduled.

In September 2022, the BOJ decided to phase out the “special funds-supplying operations to facilitate corporate financing regarding the novel coronavirus (COVID-19)” and shift to fund-provisioning that would meet a wide range of financing needs. The BOJ decided to extend fund-provisioning against loans that financial institutions make on their own by six months until the end of March 2023, and fund-provisioning against loans that financial institutions make on the back of government support by three months until the end of December 2022. In addition, the BOJ decided to set no upper limit on the amount of fund-provisioning under the policy of “funds-supplying operations against pooled

3

collateral,” for which various types of collateral are accepted, in order to support financing even after the expiration of the aforementioned special operations.

In December 2022, the BOJ decided to expand the range in which it allows the yield of 10-year Japanese government bonds to fluctuate, from between around plus or minus 0.25% to between around plus or minus 0.5%, in order to improve market function and encourage the smoother formation of the entire yield curve, while maintaining accommodative financial conditions.

• The yield on newly issued 10-year Japanese government bonds, which is a key long-term interest rate indicator, was 0.221% as of March 31, 2022 and increased to 0.244% as of September 30, 2022. Thereafter, the yield increased further to 0.253% as of November 30, 2022.

• The Nikkei Stock Average, which is an average of the price of 225 stocks listed on the Tokyo Stock Exchange, decreased by 6.8% to ¥25,937.21 as of September 30, 2022 compared to March 31, 2022. Thereafter, the Nikkei Stock Average increased to ¥27,968.99 as of November 30, 2022.

• The yen to U.S. dollar spot exchange rate, according to the BOJ, was ¥121.64 to $1.00 as of March 31, 2022 and weakened to ¥144.32 to $1.00 as of September 30, 2022. Thereafter, the yen strengthened to ¥138.53 to $1.00 as of November 30, 2022.

• According to Teikoku Databank, a Japanese research institution, in Japan, there were 2,938 corporate bankruptcies in the six months ended September 30, 2021, involving approximately ¥0.6 trillion in total liabilities, 2,978 corporate bankruptcies in the six months ended March 31, 2022, involving approximately ¥0.6 trillion in total liabilities, and 3,123 corporate bankruptcies in the six months ended September 30, 2022, involving approximately ¥1.8 trillion in total liabilities. The number of corporate bankruptcies in the six months ended September 30, 2022 increased compared to the corresponding period of the previous year for the first time since the six months ended March 31, 2020, and the amount of total liabilities exceeded ¥1.0 trillion for the first time since the six months ended September 30, 2017.

Developments Relating to Our Capital

All yen figures and percentages in this subsection are truncated.

We have been pursuing the optimal balance between capital adequacy, growth investment and enhancement of shareholder return.

In the six months ended September 30, 2022, we maintained a sufficient capital base compared to regulatory minimum requirements, mainly as a result of earning ¥333.9 billion of profit attributable to owners of parent (under Japanese GAAP).

Our Common Equity Tier 1 capital ratio under Basel III as of September 30, 2022 was 11.35%.

With respect to redemptions of previously issued securities, we redeemed various securities that are eligible regulatory capital instruments under Basel III upon their respective initial optional redemption dates or their respective maturity dates. As for Additional Tier 1 capital, in December 2022, we redeemed ¥235.0 billion of unsecured perpetual subordinated bonds with an optional redemption clause and a write-down clause issued by Mizuho Financial Group in July 2017. As for Tier 2 capital, in June 2022, we redeemed ¥79.0 billion of unsecured fixed-term subordinated bonds with an optional redemption clause and a write-down clause issued by Mizuho Financial Group in June 2017. In June 2022 and July 2022, we redeemed ¥47.0 billion and $1.5 billion of unsecured fixed-term subordinated bonds subject to phase-out arrangements under Basel III issued by Mizuho Bank in June 2012 and our overseas special purpose company in July 2012, respectively.

Meanwhile, as for the new issuances of Additional Tier 1 capital, in December 2022, we issued ¥77.0 billion of unsecured perpetual subordinated bonds with an optional redemption clause and a write-down clause through public offerings to wholesale investors in Japan. With respect to the new issuances of Tier 2 capital, in October 2022, we issued ¥51.0 billion of unsecured fixed-term subordinated bonds with a write-down clause through

4

public offerings to retail investors in Japan. In October 2022, we also issued ¥52.0 billion and ¥28.5 billion of unsecured fixed-term subordinated bonds with an optional redemption clause and a write-down clause through public offerings to retail and wholesale investors in Japan, respectively.

Interim cash dividends for the fiscal year ending March 31, 2023 were ¥42.5 per share of common stock, an increase of ¥2.5 per share compared to ¥40.0 for the fiscal year ended March 31, 2022.

We continuously consider progressive dividends as our principal approach while executing flexible and intermittent share buybacks. As for the dividends, we will decide based on the steady growth of our stable earnings base, taking 40% of the dividend payout ratio as a guide into consideration. As for share buybacks, we will consider our business results and capital adequacy, our stock price and the opportunities for growth investment in determining the execution.

Developments Relating to Our Business

Disposing of Our Cross-shareholdings

Reflecting the potential impact on our financial position associated with the risk of stock price fluctuation, as a basic policy, unless we consider the holdings to be meaningful, we will not hold the shares of other companies as cross-shareholdings. Even if we consider the holdings to be meaningful, we will also endeavor to reduce them through dialogue with the issuing companies. We promote cross-shareholdings disposal through initiatives to enhance capital efficiency by utilizing in-house company return on equity as an internal performance indicator. Under Japanese GAAP on an acquisition cost basis, our total Japanese stock portfolio (included within other securities which have readily determinable fair value) as of March 31, 2019 was ¥1,419.8 billion, and we have subsequently sold ¥334.9 billion of cross-shareholdings as of September 30, 2022.

Others

Russia-Ukraine situation

As of March 31 and September 30, 2022, our direct net country exposure to Russia was $2.92 billion and $2.44 billion, respectively, or 0.2% and 0.1%, each on an aggregate basis, of the total exposure of Mizuho Bank (consolidated) and Mizuho Trust & Banking (consolidated), which primarily consisted of outstanding loans and due from banks. Included within this exposure are loans made by AO Mizuho Bank (Moscow). Loans of AO Mizuho Bank (Moscow) increased by $0.1 billion (decreased by RUB 9.8 billion) from $0.6 billion (RUB 44.4 billion) as of March 31, 2022 to $0.7 billion (RUB 34.6 billion) as of September 30, 2022. The increase was due mainly to the effect of foreign exchange translation.

Considering the country risk arising from the sanctions against Russia and the downgrading of their credit rating, as well as the risk of deterioration in the global economy due to inflation caused by soaring energy prices and the acceleration of supply chain disruptions caused by the withdrawal of operations from Russia, we incorporated an estimate of the Russia-Ukraine situation into the macroeconomic scenario used for determining the allowance for credit losses on loans.

Replacement of London Interbank Offered Rate (“LIBOR”)

We have taken measures to prepare us for the cessation of publication of LIBOR and the shift to a successor interest rate benchmark across the entire group. We have substantively completed the benchmark transition for LIBOR whose publication has ceased as of December 31, 2021 and we are working to address the cessation of overnight, 1-month, 3-month, 6-month, 12-month USD LIBOR after the end of June 2023.

See “Item 3.D. Key Information—Risk Factors—The transition of interest rate benchmarks such as LIBOR could have adverse effects on our financial condition and results of operations.” in our most recent Form 20-F for further information.

Accounting Changes

See note 2 to our consolidated financial statements included elsewhere in this report.

5

Operating Results

The following table shows certain information as to our income, expenses and net income attributable to MHFG shareholders for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,					Increase (decrease)
	2021		2022
	(in billions of yen)
Interest and dividend income	¥	684	¥	1,241		¥	557
Interest expense		160		626			466
Net interest income		524		615			91
Provision (credit) for credit losses		46		38			(8	)
Net interest income after provision (credit) for credit losses		478		577			99
Noninterest income (loss)		762		(214	)		(976	)
Noninterest expenses		857		926			69
Income (loss) before income tax expense (benefit)		383		(563	)		(946	)
Income tax expense (benefit)		39		(172	)		(211	)
Net income (loss)		344		(391	)		(735	)
Less: Net income (loss) attributable to noncontrolling interests		31		(12	)		(43	)
Net income (loss) attributable to MHFG shareholders	¥	313	¥	(379	)	¥	(692	)

The following is a discussion of major components of our net income (loss) attributable to MHFG shareholders for the six months ended September 30, 2021 and 2022.

Net Interest Income

The following table shows the average balance of interest-earning assets and interest-bearing liabilities, interest amounts and the annualized average interest rates on such assets and liabilities for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,														Increase (decrease)
	2021							2022
	Average balance		Interest amount		Interest rate			Average balance		Interest amount		Interest rate			Average balance			Interest amount		Interest rate
	(in billions of yen, except percentages)
Interest-bearing deposits in other banks	¥	48,718	¥	26		0.11	%	¥	42,349	¥	135		0.63	%	¥	(6,369	)	¥	109		0.52	%
Call loans and funds sold		1,025		1		0.15			5,260		2		0.09			4,235			1		(0.06	)
Receivables under resale agreements and securities borrowing transactions		18,813		13		0.14			17,275		87		1.01			(1,538	)		74		0.87
Trading account assets		20,425		109		1.07			17,384		190		2.17			(3,041	)		81		1.10
Investments		34,083		64		0.38			36,248		79		0.44			2,165			15		0.06
Loans		87,449		471		1.07			95,405		748		1.56			7,956			277		0.49
Total interest-earning assets		210,513		684		0.65			213,921		1,241		1.16			3,408			557		0.51
Deposits		125,595		35		0.06			134,607		266		0.39			9,012			231		0.33
Call money and funds purchased		1,692		—		0.06			2,053		5		0.51			361			5		0.45
Payables under repurchase agreements and securities lending transactions		26,457		14		0.10			29,468		178		1.20			3,011			164		1.10
Other short-term borrowings(1)		9,581		1		0.03			6,330		11		0.35			(3,251	)		10		0.32
Trading account liabilities		2,627		29		2.16			5,530		55		1.99			2,903			26		(0.17	)
Long-term debt		11,794		81		1.37			13,843		111		1.59			2,049			30		0.22
Total interest-bearing liabilities		177,746		160		0.18			191,831		626		0.65			14,085			466		0.47
Net	¥	32,767	¥	524		0.47		¥	22,090	¥	615		0.51		¥	(10,677	)	¥	91		0.04

Note:

(1) Other short-term borrowings consist of due to trust accounts, commercial paper and other short-term borrowings.

6

Interest and dividend income increased by ¥557 billion, or 81.4%, from the six months ended September 30, 2021 to ¥1,241 billion in the six months ended September 30, 2022 due mainly to increases in interest income from loans and interest-bearing deposits in other banks. These increases were due mainly to the impact of rising global interest rates. The changes in the average yields on interest-earning assets contributed to an overall increase in interest and dividend income of ¥512 billion, and the changes in average balances of interest-earning assets contributed to an overall increase in interest and dividend income of ¥45 billion, resulting in a ¥557 billion increase in interest and dividend income.

Interest expense increased by ¥466 billion, or 291.3%, from the six months ended September 30, 2021 to ¥626 billion in the six months ended September 30, 2022 due mainly to increases in interest expense on deposits and payables under repurchase agreements and securities lending transactions. These increases were due mainly to the impact of rising global interest rates. The changes in average interest rates on interest-bearing liabilities contributed to an overall increase in interest expense of ¥406 billion, and the changes in average balances of interest-bearing liabilities contributed to an overall increase in interest expense of ¥60 billion, resulting in a ¥466 billion increase in interest expense.

As a result of the foregoing, net interest income increased by ¥91 billion, or 17.4%, from the six months ended September 30, 2021 to ¥615 billion in the six months ended September 30, 2022. Average interest rate spread rose by 0.04 percentage points from the six months ended September 30, 2021 to 0.51% in the six months ended September 30, 2022. The rise of the average interest rate spread was due mainly to a rise in the average yield on interest-earning assets, which more than offset the effect of a rise in average interest rate on interest-bearing liabilities.

Provision (credit) for credit losses

Provision for credit losses decreased by ¥8 billion from the six months ended September 30, 2021 to ¥38 billion in the six months ended September 30, 2022.

Noninterest Income

The following table shows a breakdown of noninterest income for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,					Increase (decrease)
	2021		2022
	(in billions of yen)
Fee and commission	¥	475	¥	449		¥	(26	)
Fee and commission from lending business		78		80			2
Fee and commission from securities-related business		89		75			(14	)
Fee and commission from trust related business		66		57			(9	)
Fee and commission from asset management business		61		56			(5	)
Fee and commission from remittance business		55		52			(3	)
Fee and commission from guarantee related business		17		21			4
Fee and commission from agency business		19		18			(1	)
Fee and commission from deposits business		7		8			1
Fees for other customer services		83		82			(1	)
Foreign exchange gains (losses)—net		22		129			107
Trading account gains (losses)—net		83		(851	)		(934	)
Investment gains (losses)—net		135		(105	)		(240	)
Debt securities		—		8			8
Equity securities		135		(113	)		(248	)
Equity in earnings (losses) of equity method investees—net		17		(5	)		(22	)
Gains on disposal of premises and equipment		2		2			—
Other noninterest income		28		167			139
Total noninterest income (loss)	¥	762	¥	(214	)	¥	(976	)

7

Noninterest income (loss) was a loss of ¥214 billion in the six months ended September 30, 2022 compared to an income of ¥762 billion in the corresponding period in the previous fiscal year. The changes were due mainly to trading account losses—net of ¥851 billion compared to trading account gains—net of ¥83 billion in the corresponding period in the previous fiscal year, and investment losses—net of ¥105 billion compared to investment gains—net of ¥135 billion in the corresponding period in the previous fiscal year, offset in part by an increase in other noninterest income of ¥139 billion.

Fee and Commission

Fee and commission decreased by ¥26 billion, or 5.5%, from the six months ended September 30, 2021 to ¥449 billion in the six months ended September 30, 2022. The decrease was due mainly to decreases in fee and commission from securities-related business of ¥14 billion and fee and commission from trust related business of ¥9 billion. The decrease in fee and commission from securities-related business was due mainly to relatively deteriorating market conditions during the six months ended September 30, 2022 compared to the corresponding period in the previous fiscal year. The decrease in fee and commission from trust related business was due mainly to the dissipation of the impact of sales commissions for the sale of the beneficial interest in the real estate trust of a large corporate customer in the corresponding period in the previous fiscal year.

Trading Account Gains (Losses)—Net

Trading account gains (losses)—net was a loss of ¥851 billion in the six months ended September 30, 2022 compared to a gain of ¥83 billion in the corresponding period in the previous fiscal year. The increase in trading account losses was due mainly to an increase in losses related to changes in the fair value of foreign currency-denominated securities due to a rise in long-term interest rates and a depreciation of the Japanese yen.

Investment Gains (Losses)—Net

Investment gains (losses)—net was a loss of ¥105 billion in the six months ended September 30, 2022 compared to a gain of ¥135 billion in the corresponding period in the previous fiscal year, among which investment losses—net related to equity securities was a loss of ¥113 billion in the six months ended September 30, 2022 compared to a gain of ¥135 billion in the corresponding period in the previous fiscal year. The increase in investment losses related to equity securities was due mainly to an increase in losses related to changes in the fair value of Japanese equity securities in the six months ended September 30, 2022, which mostly reflected the relatively deteriorating market conditions during the six months ended September 30, 2022 compared to the corresponding period in the previous fiscal year. For further information, see note 3 to our consolidated financial statements included elsewhere in this report.

Other noninterest income

Other noninterest income increased by ¥139 billion from the six months ended September 30, 2021 to ¥167 billion in the six months ended September 30, 2022. The increase in other noninterest income was due mainly to an increase in fair values of structured notes that contain embedded derivatives.

8

Noninterest Expenses

The following table shows a breakdown of noninterest expenses for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,					Increase (decrease)
	2021			2022
	(in billions of yen)
Salaries and employee benefits	¥	327		¥	340	¥	13
General and administrative expenses		294			340		46
Occupancy expenses		91			83		(8	)
Fee and commission expenses		108			103		(5	)
Provision (credit) for credit losses on off-balance-sheet instruments		(5	)		6		11
Other noninterest expenses		42			54		12
Total noninterest expenses	¥	857		¥	926	¥	69

Noninterest expenses increased by ¥69 billion, or 8.1%, from the six months ended September 30, 2021 to ¥926 billion in the six months ended September 30, 2022. The increase was due mainly to increases in salaries and employee benefits of ¥13 billion, and general and administrative expenses of ¥46 billion.

Salaries and employee benefits

Salaries and employee benefits increased by ¥13 billion, or 4.0%, from the six months ended September 30, 2021 to ¥340 billion in the six months ended September 30, 2022.

General and administrative expenses

General and administrative expenses increased by ¥46 billion, or 15.6%, from the six months ended September 30, 2021 to ¥340 billion in the six months ended September 30, 2022. The increase was due mainly to the depreciation of the next-generation IT systems at our securities subsidiary over its useful life.

Income Tax Expense (Benefit)

Income tax expense (benefit) was a benefit of ¥172 billion in the six months ended September 30, 2022 compared to an expense of ¥39 billion in the six months ended September 30, 2021. Deferred income tax expense (benefit) was a benefit of ¥239 billion in the six months ended September 30, 2022 compared to a benefit of ¥28 billion in the six months ended September 30, 2021. The change in deferred tax expense (benefit) was due mainly to an increase in the temporary differences of our principal banking subsidiaries.

	Six months ended September 30,						Increase (decrease)
	2021			2022
	(in billions of yen)
Income (loss) before income tax expense (benefit)	¥	383		¥	(563	)	¥	(946	)
Income tax expense (benefit)		39			(172	)		(211	)
Current tax expense		67			67			—
Deferred tax expense (benefit)		(28	)		(239	)		(211	)
Net income (loss)		344			(391	)		(735	)
Less: Net income (loss) attributable to noncontrolling interests		31			(12	)		(43	)
Net income (loss) attributable to MHFG shareholders	¥	313		¥	(379	)	¥	(692	)

9

We consider the sales of available-for-sale securities and equity securities to be a qualifying tax-planning strategy that is a possible source of future taxable income to the extent necessary in the future mainly with respect to our principal banking subsidiaries in Japan. The reliance on this tax-planning strategy of our subsidiaries in Japan was at immaterial levels of overall deferred tax assets as of September 30, 2022.

Net Income (Loss) Attributable to Noncontrolling Interests

Net income (loss) attributable to noncontrolling interests was a loss of ¥12 billion in the six months ended September 30, 2022 compared to an income of ¥31 billion in the corresponding period in the previous fiscal year.

Net Income (Loss) Attributable to MHFG Shareholders

As a result of the foregoing, net income (loss) attributable to MHFG shareholders was a loss of ¥379 billion in the six months ended September 30, 2022 compared to an income of ¥313 billion in the corresponding period in the previous fiscal year.

Business Segments Analysis

Our business segment information is prepared based on the internal management reporting systems used by management to measure the performance of our business segments under Japanese GAAP. Since figures reported to management are prepared under Japanese GAAP, they are not consistent with the consolidated financial statements prepared in accordance with U.S. GAAP. This difference is addressed in note 20 to our consolidated financial statements included elsewhere in this report, where a reconciliation to U.S. GAAP of the total amount of all business segments is provided.

We manage our group under an in-house company system based on our diverse customer segments. The aim of this system is to leverage our strengths and competitive advantage, which is the seamless integration of our banking, trust banking and securities functions under a holding company structure, to speedily provide high-quality financial services that closely match customer needs.

Specifically, the company system is classified into the following five in-house companies, each based on a customer segment: the Retail & Business Banking Company, the Corporate & Institutional Company, the Global Corporate Company, the Global Markets Company, and the Asset Management Company. We regard these customer segments as our operating segments.

For a brief description of each of our business segments, see note 20 to our consolidated financial statements included elsewhere in this report.

Results of Operations by Business Segment

Consolidated Results of Operations

Consolidated gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥1,162.5 billion, an increase of ¥31.9 billion compared to the six months ended September 30, 2021. Consolidated general and administrative expenses for the six months ended September 30, 2022 were ¥721.9 billion, an increase of ¥41.0 billion compared to the six months ended September 30, 2021. Consolidated equity in earnings of equity method investees-net for the six months ended September 30, 2022 was ¥14.5 billion, a decrease of ¥2.0 billion compared to the six months ended September 30, 2021. Consolidated net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥449.5 billion, a decrease of ¥10.9 billion compared to the six months ended September 30, 2021.

10

	Mizuho Financial Group (Consolidated)
	Retail & Business Banking Company			Corporate & Institutional Company		Global Corporate Company		Global Markets Company		Asset Management Company		Others(6)			Total
	(in billions of yen)
Six months ended September 30, 2021(1):
Gross profits + Net gains (losses) related to ETFs and others(2)	¥	346.3		¥	231.5	¥	286.6	¥	258.3	¥	29.0	¥	(21.1	)	¥	1,130.6
General and administrative expenses(3)		312.8			100.6		142.1		111.0		16.2		(1.8	)		680.9
Equity in earnings (losses) of equity method investees-net		5.5			2.3		8.9		—		0.9		(1.1	)		16.5
Amortization of goodwill and others		1.1			—		0.2		0.4		3.6		0.5			5.8
Net business profits (losses)(4) + Net gains (losses) related to ETFs and others	¥	37.9		¥	133.2	¥	153.2	¥	146.9	¥	10.1	¥	(20.9	)	¥	460.4
Fixed assets(5)	¥	539.3		¥	181.5	¥	167.2	¥	96.1	¥	—	¥	738.2		¥	1,722.3
	Mizuho Financial Group (Consolidated)
	Retail & Business Banking Company			Corporate & Institutional Company		Global Corporate Company		Global Markets Company		Asset Management Company		Others(6)			Total
	(in billions of yen)
Six months ended September 30, 2022(1):
Gross profits + Net gains (losses) related to ETFs and others(2)	¥	325.7		¥	233.4	¥	317.1	¥	232.5	¥	27.8	¥	26.0		¥	1,162.5
General and administrative expenses(3)		302.2			96.9		152.2		126.1		17.1		27.4			721.9
Equity in earnings (losses) of equity method investees-net		(0.9	)		3.6		11.6		—		0.2		—			14.5
Amortization of goodwill and others		1.0			—		0.2		0.4		3.5		0.5			5.6
Net business profits (losses)(4) + Net gains (losses) related to ETFs and others	¥	21.6		¥	140.1	¥	176.3	¥	106.0	¥	7.4	¥	(1.9	)	¥	449.5
Fixed assets(5)	¥	505.9		¥	151.5	¥	167.8	¥	85.8	¥	—	¥	815.0		¥	1,726.0

Notes:

(1) Income and expenses of foreign branches of Mizuho Bank and foreign subsidiaries with functional currencies other than Japanese Yen have been translated for purposes of segment reporting using the budgeted foreign currency rates. Prior period comparative amounts for such foreign currency income and expenses have been translated using current period budgeted foreign currency rates.

(2) “Gross profits + Net gains (losses) related to ETFs and others” is reported instead of sales reported by general corporations. Gross profits is defined as the sum of net interest income, fiduciary income, net fee and commission income, net trading income and net other operating income. Net gains (losses) related to ETFs and others consist of net gains (losses) on ETFs held by Mizuho Bank and Mizuho Trust & Banking on their non-consolidated basis and net gains (losses) on operating investment securities of Mizuho Securities on its consolidated basis. For the six months ended September 30, 2021 and 2022, net gains (losses) related to ETFs and others amounted to ¥21.8 billion and ¥8.7 billion, respectively, of which ¥22.9 billion and ¥7.6 billion are included in “Global Markets Company,” respectively.

(3) “General and administrative expenses” excludes non-allocated gains (losses), net.

(4) Net business profits (losses) is used in Japan as a measure of the profitability of core banking operations, and is defined as gross profits (as defined above) less general and administrative expenses (excluding non-allocated gains (losses), net) plus equity in earnings (losses) of equity method investees-net less amortization of goodwill and others. Measurement of net business profits (losses) is required for regulatory reporting to the Financial Services Agency of Japan.

11

(5) “Fixed assets” is presented based on Japanese GAAP and corresponds to the total amount of the following U.S. GAAP accounts: Premises and equipment-net; Goodwill; Intangible assets; and right-of-use assets related to operating leases included in Other assets. The above table does not include other asset amounts because “Fixed assets” is the only balance sheet metric that management uses when evaluating and making decisions pertaining to the operating segments. “Others” in “Fixed assets” includes assets of headquarters that have not been allocated to each segment, “Fixed assets” pertaining to consolidated subsidiaries that are not subject to allocation, consolidating adjustments, and others. Certain “Fixed assets” expenses have been allocated to each segment using reasonable allocation criteria.

(6) “Others” includes the following items:

• profits and expenses pertaining to consolidated subsidiaries that are not subject to allocation;

• consolidating adjustments, including elimination of internal transaction between each segment;

• equity in earnings (losses) of equity method investees-net that are not subject to allocation; and

• profits and losses pertaining to derivative transactions that reflect the counterparty risk of the individual parties and other factors in determining fair market value.

Retail & Business Banking Company

Gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥325.7 billion, a decrease in ¥20.6 billion, or 5.9%, compared to the six months ended September 30, 2021. The decrease was attributable mainly to a decrease in commission income from sales of investment products to individuals.

General and administrative expenses (excluding non-allocated gains (losses), net) for the six months ended September 30, 2022 decreased by ¥10.6 billion, or 3.4%, compared to the six months ended September 30, 2021 to ¥302.2 billion.

Equity in losses of equity method investees-net for the six months ended September 30, 2022 were ¥0.9 billion, a decrease in equity in earnings of equity method investees-net of ¥6.4 billion, or 116.4%, compared to the six months ended September 30, 2021.

As a result, net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 decreased by ¥16.3 billion, or 43.0%, compared to the six months ended September 30, 2021 to ¥21.6 billion.

Corporate & Institutional Company

Gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥233.4 billion, an increase of ¥1.9 billion, or 0.8%, compared to the six months ended September 30, 2021. The increase was attributable mainly to an increase in net interest income from foreign deposits and to an increase in dividends received.

General and administrative expenses (excluding non-allocated gains (losses), net) for the six months ended September 30, 2022 decreased by ¥3.7 billion, or 3.7%, compared to the six months ended September 30, 2021 to ¥96.9 billion.

Equity in earnings of equity method investees-net for the six months ended September 30, 2022 increased by ¥1.3 billion, or 56.5%, compared to the six months ended September 30, 2021 to ¥3.6 billion.

As a result, net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 increased by ¥6.9 billion, or 5.2%, compared to the six months ended September 30, 2021 to ¥140.1 billion.

12

Global Corporate Company

Gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥317.1 billion, an increase of ¥30.5 billion, or 10.6%, compared to the six months ended September 30, 2021. The increase was attributable mainly to an increase in net interest income.

General and administrative expenses (excluding non-allocated gains (losses), net) for the six months ended September 30, 2022 increased by ¥10.1 billion, or 7.1%, compared to the six months ended September 30, 2021 to ¥152.2 billion.

Equity in earnings of equity method investees-net for the six months ended September 30, 2022 increased by ¥2.7 billion, or 30.3%, compared to the six months ended September 30, 2021 to ¥11.6 billion.

As a result, net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 increased by ¥23.1 billion, or 15.1%, compared to the six months ended September 30, 2021 to ¥176.3 billion.

Global Markets Company

Gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥232.5 billion, a decrease of ¥25.8 billion, or 10.0%, compared to the six months ended September 30, 2021. The decrease was attributable mainly to a decrease in banking income which was offset in part by an increase in sales and trading income.

General and administrative expenses (excluding non-allocated gains (losses), net) for the six months ended September 30, 2022 increased by ¥15.1 billion, or 13.6%, compared to the six months ended September 30, 2021 to ¥126.1 billion.

As a result, net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 decreased by ¥40.9 billion, or 27.8%, compared to the six months ended September 30, 2021 to ¥106.0 billion.

Asset Management Company

Gross profits + net gains related to ETFs and others for the six months ended September 30, 2022 were ¥27.8 billion, a decrease of ¥1.2 billion, or 4.1%, compared to the six months ended September 30, 2021. The decrease was attributable mainly to a decrease in assets under management relating to publicly offered investment trusts.

General and administrative expenses (excluding non-allocated gains (losses), net) for the six months ended September 30, 2022 increased by ¥0.9 billion, or 5.6%, compared to the six months ended September 30, 2021 to ¥17.1 billion.

As a result, net business profits + net gains related to ETFs and others for the six months ended September 30, 2022 decreased by ¥2.7 billion, or 26.7%, compared to the six months ended September 30, 2021 to ¥7.4 billion.

13

Financial Condition

Assets

Our assets as of March 31, 2022 and September 30, 2022 were as follows:

	As of						Increase (decrease)
	March 31, 2022			September 30, 2022
	(in billions of yen)
Cash and due from banks	¥	2,290		¥	2,525		¥	235
Interest-bearing deposits in other banks		49,884			53,048			3,164
Call loans and funds sold		1,102			1,454			352
Receivables under resale agreements		12,751			14,872			2,121
Receivables under securities borrowing transactions		2,339			2,355			16
Trading account assets		24,652			35,331			10,679
Investments		37,348			29,882			(7,466	)
Loans		90,291			98,334			8,043
Allowance for credit losses on loans		(810	)		(711	)		99
Loans, net of allowance		89,481			97,623			8,142
Premises and equipment-net		1,704			1,681			(23	)
Due from customers on acceptances		272			376			104
Accrued income		322			423			101
Goodwill		93			96			3
Intangible assets		48			49			1
Deferred tax assets		277			516			239
Other assets		8,988			10,520			1,532
Total assets	¥	231,551		¥	250,751		¥	19,200

Total assets increased by ¥19,200 billion from March 31, 2022 to ¥250,751 billion as of September 30, 2022. The increase was due mainly to increases of ¥10,679 billion in trading account assets, ¥8,142 billion in loans, net of allowance, ¥3,164 billion in interest-bearing deposits in other banks, ¥2,121 billion in receivables under resale agreements and ¥1,532 billion in other assets, offset in part by a decrease of ¥7,466 billion in investments.

14

Loans

Loans outstanding

The following table shows our loans outstanding as of March 31, 2022 and September 30, 2022:

	As of								Increase (decrease)
	March 31, 2022				September 30, 2022
	(in billions of yen, except percentages)
Domestic:
Corporate:
Large companies	¥	42,044	46.6	%	¥	42,924	43.7	%	¥	880		(2.9	)%
Small and medium-sized companies		3,157	3.5			3,059	3.1			(98	)	(0.4	)
Retail:
Housing loan		7,782	8.6			7,642	7.8			(140	)	(0.8	)
Others		1,707	1.9			1,628	1.7			(79	)	(0.2	)
Sovereign		1,660	1.8			1,816	1.8			156		0.0
Banks and other financial institutions		682	0.8			773	0.7			91		(0.1	)
Total domestic		57,032	63.2			57,842	58.8			810		(4.4	)
Foreign:
Corporate(1)		30,889	34.2			37,290	37.9			6,401		3.7
Retail		11	0.0			11	0.0			—		0.0
Sovereign		587	0.6			726	0.7			139		0.1
Banks and other financial institutions		1,772	2.0			2,465	2.6			693		0.6
Total foreign		33,259	36.8			40,492	41.2			7,233		4.4
Total loans before allowance for credit losses on loans	¥	90,291	100.0	%	¥	98,334	100.0	%	¥	8,043		—

Note:

(1) Corporate under Foreign includes ¥216 billion and ¥215 billion of lease receivables that are receivables arising from direct financing leasing as of March 31, 2022 and September 30, 2022, respectively.

Total loans before allowance for credit losses on loans increased by ¥8,043 billion from March 31, 2022 to ¥98,334 billion as of September 30, 2022.

Loans to domestic borrowers increased by ¥810 billion from March 31, 2022 to ¥57,842 billion as of September 30, 2022. The increase was due mainly to an increase in loans to large companies.

Loans to foreign borrowers increased by ¥7,233 billion from March 31, 2022 to ¥40,492 billion as of September 30, 2022. The increase was due mainly to an increase in loans to corporate borrowers.

Within our loan portfolio, the proportion of loans to domestic borrowers against gross total loans decreased from 63.2% to 58.8%, while that of loans to foreign borrowers against gross total loans increased from 36.8% to 41.2%. Loans to foreign borrowers were regionally diversified.

15

Nonaccrual Loans

Balance of nonaccrual loans

The following table shows our nonaccrual loans as of March 31, 2022 and September 30, 2022:

	As of										Increase (decrease)
	March 31, 2022					September 30, 2022
	Nonaccrual loans		Ratio to gross total loans			Nonaccrual loans		Ratio to gross total loans			Nonaccrual loans			Ratio to gross total loans
	(in billions of yen, except percentages)
Domestic:
Corporate:
Large companies	¥	800		1.9	%	¥	675		1.6	%	¥	(125	)		(0.3	)%
Small and medium-sized companies		140		4.5			133		4.3			(7	)		(0.2	)
Retail:
Housing loan		49		0.6			43		0.6			(6	)		0.0
Others		62		3.6			59		3.6			(3	)		0.0
Total domestic		1,051		1.8			910		1.6			(141	)		(0.2	)
Foreign		117		0.4			171		0.4			54			0.0
Total nonaccrual loans	¥	1,168		1.3		¥	1,081		1.1		¥	(87	)		(0.2	)

Total nonaccrual loans decreased by ¥87 billion, or 7.5%, from March 31, 2022 to ¥1,081 billion as of September 30, 2022. Nonaccrual loans to domestic borrowers decreased by ¥141 billion due mainly to a decrease in nonaccrual loans to large companies. Nonaccrual loans to foreign borrowers increased by ¥54 billion due mainly to the deterioration of credit status of certain corporate borrowers. The relative impact of foreign currency fluctuations on such amount was immaterial.

The percentage of nonaccrual loans within gross total loans decreased from 1.3% as of March 31, 2022 to 1.1% as of September 30, 2022. The percentage of nonaccrual loans net of allowance for credit losses on loans to gross total loans net of allowance for credit losses on loans decreased from 0.40% as of March 31, 2022 to 0.38% as of September 30, 2022 due to a larger percentage increase in gross total loans net of allowance for credit losses on loans than the percentage increase in nonaccrual loans net of allowance for credit losses on loans.

16

Allowance for Credit Losses on Loans

Balance of allowance for credit losses on loans

The following table summarizes the allowance for credit losses on loans by component and as a percentage of the corresponding loan balance as of March 31, 2022 and September 30, 2022:

	As of						Increase (decrease)
	March 31, 2022			September 30, 2022
	(in billions of yen, except percentages)
Total allowance for credit losses on loans (A)	¥	810		¥	711		¥	(99	)
Nonaccrual loans with an allowance (B)	¥	1,082		¥	996		¥	(86	)
Nonaccrual loans without an allowance (C)		86			85			(1	)
Accrual loans(1) (D)		89,319			97,478			8,159
Gross total loans (E)	¥	90,487		¥	98,559		¥	8,072
Percentage of total allowance for credit losses on loans against gross total loans (A)/(E)x100		0.89	%		0.72	%		(0.17	)%

Note:

(1) Accrual loans refer to loans categorized as “normal obligors” and “watch obligors (excluding special attention obligors)” under our internal rating system.

While allowance for credit losses on loans decreased by ¥99 billion from March 31, 2022 to ¥711 billion as of September 30, 2022, gross total loans increased by ¥8,072 billion from March 31, 2022 to ¥98,559 billion as of September 30, 2022 due mainly to an increase in accrual loans. As a result, the percentage of total allowance for credit losses on loans against gross total loans decreased by 0.17 percentage points to 0.72% as of September 30, 2022.

Nonaccrual loans decreased by 7.5% from March 31, 2022 due mainly to a decrease in nonaccrual loans with an allowance. Allowance for credit losses on loans decreased by 12.2% from March 31, 2022.

The coverage ratio for nonaccrual loans, calculated as the percentage of total allowance for credit losses on loans against total nonaccrual loans, decreased by 3.56 percentage points as of September 30, 2022 compared to March 31, 2022. The decrease was due to a larger percentage decrease in total allowance for credit losses on loans than the percentage decrease in total nonaccrual loans.

17

Provision (credit) for credit losses on loans

The following table summarizes changes in our allowance for credit losses on loans in the six months ended September 30, 2021 and 2022:

	Six months ended September 30,						Increase (decrease)
	2021			2022
	(in billions of yen)
Allowance for credit losses on loans at beginning of fiscal year	¥	651		¥	810		¥	159
Provision (credit) for credit losses on loans		48			39			(9	)
Charge-offs		(41	)		(164	)		(123	)
Recoveries		6			4			(2	)
Net charge-offs		(35	)		(160	)		(125	)
Others(1)		1			22			21
Balance at end of six-month period	¥	665		¥	711		¥	46

Note:

(1) “Others” includes primarily foreign exchange translation.

Provision for credit losses on loans decreased by ¥9 billion from the six months ended September 30, 2021 to ¥39 billion in the six months ended September 30, 2022.

Charge-offs increased by ¥123 billion from the six months ended September 30, 2021 to ¥164 billion for the six months ended September 30, 2022 due mainly to a debt waiver to a domestic corporate borrower.

Investments

The majority of our investments are available-for-sale and held-to-maturity securities, which as of March 31, 2022 and September 30, 2022 were as follows:

	As of														Increase (decrease)
	March 31, 2022							September 30, 2022
	Amortized cost		Fair value		Net unrealized gains (losses)			Amortized cost		Fair value		Net unrealized gains (losses)			Amortized cost			Fair value			Net unrealized gains (losses)
	(in billions of yen)
Available-for-sale securities:
Debt securities:
Japanese government bonds	¥	25,191	¥	25,159	¥	(32	)	¥	17,135	¥	17,103	¥	(32	)	¥	(8,056	)	¥	(8,056	)	¥	—
Other than Japanese government bonds		6,511		6,515		4			6,658		6,641		(17	)		147			126			(21	)
Total	¥	31,702	¥	31,674	¥	(28	)	¥	23,793	¥	23,744	¥	(49	)	¥	(7,909	)	¥	(7,930	)	¥	(21	)
Held-to-maturity securities:
Debt securities:
Japanese government bonds	¥	480	¥	485	¥	5		¥	839	¥	843	¥	4		¥	359		¥	358		¥	(1	)
Agency mortgage-backed securities		1,039		981		(58	)		1,233		1,050		(183	)		194			69			(125	)
Total	¥	1,519	¥	1,466	¥	(53	)	¥	2,072	¥	1,893	¥	(179	)	¥	553		¥	427		¥	(126	)

18

Available-for-sale securities measured at fair value decreased by ¥7,930 billion from March 31, 2022 to ¥23,744 billion as of September 30, 2022. The decrease was due primarily to our sales and redemptions by the Japanese government of Japanese government bonds. Held-to-maturity securities measured at amortized cost increased by ¥553 billion from March 31, 2022 to ¥2,072 billion as of September 30, 2022. The increase was due primarily to increases in Japanese government bonds and agency mortgage-backed securities. See note 3 to our consolidated financial statements for details of other investments included within investments.

Trading Account Assets

Trading account assets increased by ¥10,679 billion from March 31, 2022 to ¥35,331 billion as of September 30, 2022. The increase was due mainly to an increase in the market value of receive-variable, pay-fixed derivative instruments based on interest rate contracts, reflecting a fluctuation in long-term interest rates, and an increase in the fair value of trading account assets denominated in foreign currency, reflecting the depreciation of the yen.

Liabilities

The following table shows our liabilities as of March 31, 2022 and September 30, 2022:

	As of				Increase (decrease)
	March 31, 2022		September 30, 2022
	(in billions of yen)
Deposits	¥	157,178	¥	164,952	¥	7,774
Due to trust accounts		390		350		(40	)
Call money and funds purchased		1,278		1,572		294
Payables under repurchase agreements		20,070		23,767		3,697
Payables under securities lending transactions		1,361		1,491		130
Other short-term borrowings		7,567		3,593		(3,974	)
Trading account liabilities		14,859		24,229		9,370
Bank acceptances outstanding		272		376		104
Income taxes payable		63		79		16
Deferred tax liabilities		29		21		(8	)
Accrued expenses		203		317		114
Long-term debt		12,578		13,547		969
Other liabilities		6,261		7,020		759
Total liabilities	¥	222,109	¥	241,314	¥	19,205

Total liabilities increased by ¥19,205 billion from March 31, 2022 to ¥241,314 billion as of September 30, 2022. The increase was due primarily to increases of ¥9,370 billion in trading account liabilities and ¥7,774 billion in deposits.

19

Deposits

The following table shows a breakdown of our deposits as of March 31, 2022 and September 30, 2022:

	As of				Increase (decrease)
	March 31, 2022		September 30, 2022
	(in billions of yen)
Domestic:
Noninterest-bearing deposits	¥	32,845	¥	27,850	¥	(4,995	)
Interest-bearing deposits		91,425		94,941		3,516
Total domestic deposits		124,270		122,791		(1,479	)
Foreign:
Noninterest-bearing deposits		2,501		2,569		68
Interest-bearing deposits		30,407		39,592		9,185
Total foreign deposits		32,908		42,161		9,253
Total deposits	¥	157,178	¥	164,952	¥	7,774

Total deposits increased by ¥7,774 billion from March 31, 2022 to ¥164,952 billion as of September 30, 2022. Domestic deposits decreased by ¥1,479 billion from March 31, 2022 to ¥122,791 billion as of September 30, 2022. Domestic interest-bearing deposits increased by ¥3,516 billion from March 31, 2022 to ¥94,941 billion as of September 30, 2022 due mainly to an increase in certificates of deposit. Domestic noninterest-bearing deposits decreased by ¥4,995 billion from March 31, 2022 to ¥27,850 billion as of September 30, 2022 due mainly to decreases in noninterest-bearing ordinary deposits and foreign bills of exchange payable. Foreign deposits increased by ¥9,253 billion from March 31, 2022 to ¥42,161 billion as of September 30, 2022 due mainly to increases in time deposits and certificates of deposit.

Short-term Borrowings

The following table shows a breakdown of our short-term borrowings as of March 31, 2022 and September 30, 2022:

	As of												Increase (decrease)
	March 31, 2022						September 30, 2022
	Domestic		Foreign		Total		Domestic		Foreign		Total		Domestic			Foreign			Total
	(in billions of yen)
Due to trust accounts	¥	390	¥	—	¥	390	¥	350	¥	—	¥	350	¥	(40	)	¥	—		¥	(40	)
Call money and funds purchased, and payables under repurchase agreements and securities lending transactions		5,803		16,906		22,709		6,618		20,212		26,830		815			3,306			4,121
Other short-term borrowings		5,698		1,869		7,567		1,895		1,698		3,593		(3,803	)		(171	)		(3,974	)
Total short-term borrowings	¥	11,891	¥	18,775	¥	30,666	¥	8,863	¥	21,910	¥	30,773	¥	(3,028	)	¥	3,135		¥	107

Total short-term borrowings increased by ¥107 billion from March 31, 2022 to ¥30,773 billion as of September 30, 2022. Domestic short-term borrowings decreased by ¥3,028 billion due mainly to a decrease in other short-term borrowings, offset in part by an increase in payables under repurchase agreements. Foreign short-term borrowings increased by ¥3,135 billion due mainly to an increase in payables under repurchase agreements.

20

Trading Account Liabilities

Trading account liabilities increased by ¥9,370 billion from March 31, 2022 to ¥24,229 billion as of September 30, 2022. The increase was due mainly to an increase in the market value of receive-fixed, pay-variable derivative instruments based on interest rate contracts, reflecting a fluctuation in long-term interest rates, an increase in securities sold for short sales related to hedging activities, and an increase in the fair value of trading account liabilities denominated in foreign currency, reflecting the depreciation of the yen.

Equity

The following table shows a breakdown of equity as of March 31, 2022 and September 30, 2022:

	As of						Increase (decrease)
	March 31, 2022			September 30, 2022
	(in billions of yen)
MHFG shareholders’ equity:
Common stock	¥	5,817		¥	5,832		¥	15
Retained earnings		2,665			2,185			(480	)
Accumulated other comprehensive income, net of tax		440			699			259
Treasury stock, at cost		(8	)		(8	)		—
Total MHFG shareholders’ equity		8,914			8,708			(206	)
Noncontrolling interests		528			729			201
Total equity	¥	9,442		¥	9,437		¥	(5	)

Total equity decreased by ¥5 billion from March 31, 2022 to ¥9,437 billion as of September 30, 2022 due mainly to a decrease in retained earnings, offset in part by increases in accumulated other comprehensive income, net of tax and noncontrolling interests.

Retained earnings decreased by ¥480 billion from March 31, 2022 to ¥2,185 billion as of September 30, 2022. The decrease was due primarily to net loss attributable to MHFG shareholders for the six months ended September 30, 2022 of ¥379 billion and dividend payments of ¥102 billion.

Accumulated other comprehensive income, net of tax increased by ¥259 billion from March 31, 2022 to ¥699 billion as of September 30, 2022. The increase was due primarily to foreign currency translation adjustments of ¥269 billion.

Noncontrolling interests increased by ¥201 billion from March 31, 2022 to ¥729 billion as of September 30, 2022. The increase was due mainly to new consolidations of certain investment funds, offset in part by the deconsolidation of certain investment funds and a decrease in net assets of certain investment funds that we consolidate.

Liquidity

We continuously endeavor to enhance the management of our liquidity profile to meet our customers’ loan demand and deposit withdrawals and respond to unforeseen situations such as adverse movements in stock prices, foreign currency exchange rates, interest rates and other markets or changes in general domestic or international conditions. We manage our liquidity profile through the continuous monitoring of our cash flow situation, the enforcement of upper limits on funds raised in financial markets and other means as further set forth in “Item 11. Quantitative and Qualitative Disclosures about Credit, Market and Other Risk-Liquidity Risk Management” in our most recent Form 20-F filed with the U.S. Securities and Exchange Commission.

21

Deposits, based on our broad customer base and brand recognition in Japan, have been our primary source of liquidity. Our total deposits increased by ¥7,774 billion, or 4.9%, from March 31, 2022 to ¥164,952 billion as of September 30, 2022. Our average balance of deposits for the six months ended September 30, 2022 of ¥164,295 billion exceeded our average balance of loans for the same period by ¥68,890 billion. We invested the excess portion primarily in marketable securities and other high liquidity assets.

Secondary sources of liquidity include short-term borrowings such as call money and funds purchased and payables under repurchase agreements. We also issue long-term debt, including both senior and subordinated debt, as additional sources for liquidity. We utilize short-term borrowings to diversify our funding sources and to manage our funding costs. We raise senior and subordinated long-term debt for the purpose of improving our total loss absorbing capacity and capital adequacy ratios, which also enhances our liquidity profile. We believe we are able to access such sources of liquidity on a stable and flexible basis based on our current credit ratings. The following table shows credit ratings assigned to us and to our principal banking subsidiaries by S&P and Moody’s as of November 30, 2022:

	As of November 30, 2022
	S&P			Moody’s
	Long-term	Short-term	Stand-alone credit profile	Long-term	Short-term	Baseline credit assessment
Mizuho Financial Group	A-	—	—	A1	P-1	—
Mizuho Bank	A	A-1	a-	A1	P-1	baa1
Mizuho Trust & Banking	A	A-1	a-	A1	P-1	baa1

We source our funding in foreign currencies primarily from corporate customers, foreign governments, financial institutions and institutional investors, through short-term and long-term financing, under terms and pricing commensurate with our credit ratings above, and customer deposits. In the event of future declines in our credit quality or that of Japan in general, we expect to be able to purchase foreign currencies in sufficient amounts using the yen funds raised through our domestic customer base. As further measures to support our foreign currency liquidity, we hold foreign debt securities and maintain credit lines and swap facilities denominated in foreign currencies.

In order to maintain appropriate funding liquidity, our principal banking subsidiaries hold highly liquid investment assets such as Japanese government bonds as liquidity reserve assets. We monitor the amount of liquidity reserve assets and report such amount to the Risk Management Committee, the Balance Sheet Management Committee, the Executive Management Committee and the President & Group CEO on a regular basis. Minimum regulatory reserve amounts, or the reserve amount deposited with the Bank of Japan pursuant to applicable regulations that is calculated as a specified percentage of the amount of deposits held by our principal banking subsidiaries, are excluded in connection with our management of liquidity reserve asset levels. We established and apply classifications for the cash flow conditions affecting the group, including the amount of liquidity reserve assets, that range from “Normal” to “Anxious” and “Crisis” categories, and take appropriate actions based on such conditions. As of September 30, 2022, the balance of Japanese government bonds included within our investments and measured at fair value was ¥17.1 trillion (excluding held-to-maturity securities), and a majority of this amount, which has historically not fluctuated significantly over the course of a fiscal year, was classified as the principal component of liquidity reserve assets.

Under the regulatory liquidity requirements in Japan that consist of the liquidity coverage ratio (“LCR”) standard and the net stable funding ratio (“NSFR”) standard, the regulatory minimum requirements of LCR and NSFR are 100% on both a consolidated and non-consolidated basis for banks with international operations or on a consolidated basis for bank holding companies with international operations. Under the disclosure guidelines of the Financial Services Agency, banks and bank holding companies with international operations are required to disclose the three-month averages of daily LCR and to disclose NSFR on a quarterly basis. Set forth below are the averages of the daily end balances of consolidated LCR data of Mizuho Financial Group, and consolidated

22

and non-consolidated LCR data of our principal banking subsidiaries, each for the second quarter of the fiscal year ending March 31, 2023, and consolidated NSFR data of Mizuho Financial Group, and consolidated and non-consolidated NSFR data of our principal banking subsidiaries, each as of the end of the second quarter of the fiscal year ending March 31, 2023. The figures are calculated based on our financial statements prepared in accordance with Japanese GAAP and the guidelines on LCR and NSFR established by the Financial Services Agency. All yen figures in this table are truncated.

Liquidity Coverage Ratio (LCR)

	Second Quarter of Fiscal Year ending March 31, 2023
	(in billions of yen, except percentages)
Mizuho Financial Group (Consolidated)
Total high-quality liquid assets (“HQLA”) allowed to be included in the calculation (weighted)	¥	74,062
Net cash outflows (weighted)		58,979
LCR		125.6	%
Mizuho Bank (Consolidated)
Total HQLA allowed to be included in the calculation (weighted)	¥	69,856
Net cash outflows (weighted)		55,848
LCR		125.1	%
Mizuho Bank (Non-consolidated)
Total HQLA allowed to be included in the calculation (weighted)	¥	68,992
Net cash outflows (weighted)		54,432
LCR		126.8	%
Mizuho Trust and Banking (Consolidated)
Total HQLA allowed to be included in the calculation (weighted)	¥	2,282
Net cash outflows (weighted)		1,667
LCR		138.1	%
Mizuho Trust and Banking (Non-Consolidated)
Total HQLA allowed to be included in the calculation (weighted)	¥	2,188
Net cash outflows (weighted)		1,534
LCR		144.1	%

23

Net Stable Funding Ratio (NSFR)

	Second Quarter of Fiscal Year ending March 31, 2023
	(in billions of yen, except percentages)
Mizuho Financial Group (Consolidated)
Available stable funding (weighted)	¥	109,960
Required stable funding (weighted)		94,839
NSFR		115.9	%
Mizuho Bank (Consolidated)
Available stable funding (weighted)	¥	105,191
Required stable funding (weighted)		89,886
NSFR		117.0	%
Mizuho Bank (Non-consolidated)
Available stable funding (weighted)	¥	101,940
Required stable funding (weighted)		86,378
NSFR		118.0	%
Mizuho Trust and Banking (Consolidated)
Available stable funding (weighted)	¥	3,528
Required stable funding (weighted)		3,115
NSFR		113.2	%
Mizuho Trust and Banking (Non-Consolidated)
Available stable funding (weighted)	¥	3,488
Required stable funding (weighted)		3,084
NSFR		113.1	%

For more information on LCR and NSFR, see “Item 4. Information on the Company—Supervision and Regulation—Liquidity” in our most recent Form 20-F.

Off-balance-sheet Arrangements

See note 14 and note 15 to our consolidated financial statements included elsewhere in this report.

Capital Adequacy

All yen figures and percentages in this subsection are truncated. Accordingly, the total of each column of figures may not be equal to the total of the individual items.

Regulatory Capital Requirements

Mizuho Financial Group and its principal banking subsidiaries are subject to regulatory capital requirements administered by the Financial Services Agency in accordance with the provisions of the Banking Act and related regulations. Failure to meet minimum capital requirements may initiate certain mandatory actions by regulators that, if undertaken, could have a direct material effect on our financial condition and results of operations.

The capital adequacy guidelines applicable to Japanese banks and bank holding companies with international operations supervised by the Financial Services Agency closely follow the risk-adjusted approach proposed by the Bank for International Settlements and are intended to further strengthen the soundness and stability of Japanese banks. Under the risk-based capital framework of these guidelines, balance sheet assets and off-balance sheet exposures are assessed according to broad categories of relative risk, based primarily on the credit risk of the counterparty, country transfer risk and the risk regarding the category of transactions.

24

In December 2010, the Basel Committee on Banking Supervision (“BCBS”) issued its Basel III rules text (later revised in June 2011, January 2013, October 2014 and December 2017), which builds on the International Convergence of Capital Measurement and Capital Standards document (“Basel II”), to strengthen the regulation, supervision and risk management of the banking sector. Basel III text presents the details of global regulatory standards on bank capital adequacy and liquidity. The rules text sets out higher and better quality capital, better risk coverage, the introduction of a leverage ratio as a backstop to the risk-based requirement, and the introduction of the capital conservation buffer and countercyclical capital buffer as measures to promote the build-up of capital that can be drawn down in periods of stress, and the introduction of two global liquidity standards. For further information of the leverage ratio and the two global liquidity standards, see “Leverage Ratio” below and “Liquidity” above, respectively.

The Financial Services Agency’s revisions to its capital adequacy guidelines became effective from March 31, 2013, which generally reflect rules in the Basel III text that have been applied from January 1, 2013.

Under the revised guidelines, the minimum capital adequacy ratio is 8% on both a consolidated and non-consolidated basis for banks with international operations, such as Mizuho Bank and Mizuho Trust & Banking, or on a consolidated basis for bank holding companies with international operations, such as Mizuho Financial Group. Within the minimum capital adequacy ratio, the Common Equity Tier 1 capital requirement is 4.5% and the Tier 1 capital requirement is 6.0%.

Under the revised capital adequacy guidelines based on the Basel III rules that have been applied to banks and bank holding companies each with international operations from March 31, 2013, there are regulatory adjustments such as goodwill and other intangibles, deferred tax assets, investments in the capital of banking, financial and insurance entities, etc. that shall be deducted under certain conditions for the purpose of calculating capital adequacy ratios, and the requirements of regulatory adjustments were enhanced under the revised capital adequacy guidelines. For example, under the capital adequacy guidelines prior to the revision thereto under the Basel III rules, the maximum amount of net deferred tax assets under Japanese GAAP that major Japanese banks, including bank holding companies, could record without diminishing the amount of Tier 1 capital for purposes of calculating capital adequacy ratio was 20% of Tier 1 capital. Under the revised capital adequacy guidelines based on the Basel III rules, deferred tax assets that arise from temporary differences will be recognized as part of Common Equity Tier 1 capital, with recognition capped at 10% of Common Equity Tier 1 capital under certain conditions, while other deferred tax assets, such as those relating to net loss carryforwards, will be deducted in full from Common Equity Tier 1 capital net of deferred tax liabilities.

In November 2015, the Financial Services Agency published the revised capital adequacy guidelines and related ordinances to introduce the capital buffer requirements under the Basel III rules for Japanese banks and bank holding companies with international operations, which include the capital conservation buffer, the countercyclical capital buffer and the additional loss absorbency requirements for global systemically important banks (“G-SIBs”) and domestic systemically important banks (“D-SIBs”). These guidelines have become effective on March 31, 2016. The capital conservation buffer, the countercyclical capital buffer and the additional loss absorption capacity requirement for G-SIBs and D-SIBs must be met with Common Equity Tier 1 capital under the revised guidelines, and if such buffer requirements are not satisfied, a capital distribution constraints plan is required to be submitted to the Financial Services Agency and carried out. The capital conservation buffer became fully effective in March 2019 at 2.5%. In addition, subject to national discretion by the respective regulatory authorities, if the relevant national authority judges a period of excess credit growth to be leading to the build-up of system-wide risk, a countercyclical capital buffer ranging from 0% to 2.5% would also be imposed on banking organizations. The countercyclical capital buffer is a weighted average of the buffers deployed across all the jurisdictions to which the banking organization has credit exposures. Further, we are currently designated as both a G-SIB and D-SIB, and the additional loss absorption capacity requirement applied to us was 1.0%. The additional loss absorption capacity requirement was the same as that imposed by the Financial Stability Board (“FSB”), which became fully effective in March 2019 at 1.0%.

25

Under the capital adequacy guidelines, banks and bank holding companies each with international operations are required to measure and apply capital charges with respect to their credit risk, market risk and operational risk. Under the guidelines, banks and bank holding companies have several choices for the methodologies to calculate their capital requirements for credit risk, market risk and operational risk. Approval of the Financial Services Agency is necessary to adopt advanced methodologies for calculation, and Mizuho Financial Group started to apply the advanced internal ratings-based approach for the calculation of credit risk from the fiscal year ended March 31, 2009 and also to apply the advanced measurement approaches for the calculation of operational risk from September 30, 2009.

In December 2017, the BCBS published the finalized Basel III reforms endorsed by the Group of Central Bank Governors and Heads of Supervision (“GHOS”). The finalized reforms complement the initial phase of Basel III reforms set forth above, seek to restore credibility in the calculation of risk-weighted assets and improve the comparability of banks’ capital ratios. Such reforms include the following elements:

• a revised standardized approach for credit risk, which is designed to improve the robustness and risk sensitivity of the existing approach;

• revisions to the internal ratings-based approach for credit risk, where the use of the most advanced internally modelled approaches for low-default portfolios will be limited;

• revisions to the credit valuation adjustment (CVA) framework, including the removal of the internally modelled approach and the introduction of a revised standardized approach;

• a revised standardized approach for operational risk, which will replace the existing standardized approaches and the advanced measurement approaches;

• revisions to the capital floor, under which banks’ risk-weighted assets generated by internal models must be no lower than 72.5% of the total risk-weighted assets as calculated using only the standardized approaches under the revised Basel III framework; and

• requirements to disclose their risk-weighted assets based on the standardized approaches.

In addition, under the finalized Basel III reforms, G-SIBs are required to meet a leverage ratio buffer, which will take the form of a Tier 1 capital buffer set at 50% of the applicable G-SIB’s risk-weighted capital buffer, and various refinements are made to the definition of the leverage ratio exposure measure based on the text of the leverage ratio framework issued by the BCBS in January 2014. Furthermore, in January 2019, the GHOS endorsed the finalized market risk capital framework that was scheduled to take effect as of January 1, 2022, concurrent with the implementation of the finalized Basel III reforms. The revised framework was initially scheduled to mainly take effect from January 1, 2022. In March 2020, however, the GHOS announced that, in order to provide additional operational capacity for banks and supervisors to respond to the immediate financial stability priorities resulting from the impact of the coronavirus disease (COVID-19) on the global banking system, it endorsed a set of measures, including the deferral of the implementation date of the finalized Basel III reforms by one year to January 1, 2023, and the extension of the accompanying transitional arrangements for the output floor by one year to January 1, 2028, as well as the implementation date of the finalized market risk capital framework by one year to January 1, 2023. As a result, under the finalized Basel III reforms, the revisions to the capital floor were scheduled to be phased in from January 1, 2023, with the initial capital floor of 50%, and were scheduled to be fully implemented at 72.5% from January 1, 2028, and the leverage ratio requirements under the finalized definition of the leverage ratio exposure measure were scheduled to take effect from January 1, 2023, and the leverage ratio buffer requirement for G-SIBs will take effect from January 1, 2023.

On March 30, 2020, the Financial Services Agency announced a deferral of the date of implementation in Japan of the Basel III finalization framework by one year until March 31, 2023. On September 28, 2021, the Financial Services Agency announced its plan to allow Japanese banks with only domestic operations that have not been using internal model-based approaches for measuring risks to further delay the commencement date of the application of the Basel III finalization framework for one additional year to March 31, 2024. Furthermore,

26

on March 25, 2022, the Financial Services Agency announced its plan to further defer the implementation of Basel III finalization framework in Japan by one year, based on the international situation and dialogue with stakeholders: (i) in respect of the Japanese banks with international operations and Japanese banks with only domestic operations that have been using internal model-based approaches for measuring risks, the implementation date was delayed to March 31, 2024, except for banks that have notified the Financial Services Agency that they wish to implement Basel III finalization framework earlier, and (ii) in respect of the Japanese banks with only domestic operations that have not been using internal model-based approaches for measuring risks, the implementation date was delayed to March 31, 2025. Furthermore, the Financial Services Agency has published amendments to the regulatory notices regarding operational risk, credit risk, market risk and CVA risk under the Basel III finalization framework from March to April 2022 and in November 2022.

Leverage Ratio

The Leverage Ratio framework is critical and complementary to the risk-based capital framework that will help ensure broad and adequate capture of both on- and off-balance sheet sources of banks’ leverage. This simple, non-risk-based measure will restrict the build-up of excessive leverage in the banking sector to avoid destabilizing deleveraging processes that can damage the broader financial system and the economy. Implementation of the leverage ratio requirements began with bank-level reporting to national supervisors of the leverage ratio and its components, and public disclosure became required beginning January 2015. Basel III’s leverage ratio is defined as the “capital measure” (numerator) divided by the “exposure measure” (denominator) and is expressed as a percentage. The capital measure is defined as Tier 1 capital, and the minimum leverage ratio is defined as 3%.

The Financial Services Agency applied the requirement to meet the minimum leverage ratio for bank holding companies and banks with international operations from March 31, 2019. The minimum leverage ratio is defined as 3% on a consolidated basis for bank holding companies with international operations, such as Mizuho Financial Group, or on both a consolidated and non-consolidated basis for banks with international operations, such as Mizuho Bank and Mizuho Trust & Banking.

The implementation of the leverage ratio requirements under the finalized definition of the leverage ratio exposure measure and the leverage ratio buffer requirement for G-SIBs under the finalized Basel III reforms were deferred for one year according to the deferral of Basel III implementation announced by GHOS described above. The leverage ratio requirements under the finalized definition of the leverage ratio exposure measure were scheduled to take effect from January 1, 2023, and the leverage ratio buffer requirement for G-SIBs will take effect from January 1, 2023.

In June 2019, to address the window-dressing of the leverage ratio, BCBS agreed that internationally-active banks must disclose the amounts of adjusted gross securities financing transaction (“SFT”) assets based on quarter-end values and on an average of daily values over the quarter as part of their Pillar 3 requirements, in addition to disclosure of the total leverage exposure and the leverage ratio as calculated using the averaged value of SFTs. Such disclosure requirement will apply to the Pillar 3 disclosure requirements associated with the version of the leverage ratio standard that will serve as the Pillar 1 minimum capital requirement and its implementation was deferred for one year to January 1, 2023 according to the announcement by the GHOS described above.

According to the deferral of Basel III finalization framework announced by the Financial Services Agency described above, the leverage ratio buffer requirement for G-SIBs under the finalized Basel III reforms are scheduled to be implemented in Japan from March 2023, and the leverage ratio requirements under the finalized definition and the Pillar 3 disclosure requirements described above are scheduled to be implemented in Japan from March 2024, except for banks that have notified the Financial Services Agency that they wish to implement the Basel III finalization framework earlier. Furthermore, the Financial Services Agency published amendments to the regulatory notices regarding leverage ratio requirements and the leverage ratio buffer requirement for G-SIBs under the Basel III finalization framework and the Pillar 3 disclosure requirements described above on July 15, 2022.

27

In June 2020, in coordination with the monetary policy of the Bank of Japan in response to the impact of COVID-19, the Financial Services Agency amended the leverage ratio regulations which introduced the temporary measures to exclude the amounts of deposits to the Bank of Japan from the calculation of the leverage ratio exposure from June 30, 2020 until March 31, 2021, due to the uncertainty on the impact of COVID-19. The implementation period of such temporary measures has been extended twice in March 2021 and March 2022 to the end of March 2024. In addition, in November 2022, the Financial Services Agency published the revised ordinances regarding the leverage ratio buffer requirement for G-SIBs under the finalized Basel III reforms, with effect from March 2023, under which, if such buffer requirements are not satisfied, a capital distribution constraints plan is required to be submitted to the Financial Services Agency and carried out. In the same month, the Financial Services Agency amended the leverage ratio regulations, with effect from April 2024, which will raise the minimum leverage ratio from 3% to 3.15% and add 0.05% to the leverage ratio buffer requirement for G-SIBs, while continuing to exclude the amounts of deposits to the Bank of Japan from the calculation of the leverage ratio exposure.

Total Loss Absorbing Capacity

Related to regulatory capital requirements, in November 2015, the FSB issued the final Total Loss Absorbing Capacity (“TLAC”) standard for G-SIBs. The TLAC standard has been designed so that failing G-SIBs will have sufficient loss-absorbing and recapitalization capacity available in resolution for authorities to implement an orderly resolution. G-SIBs are required to meet the TLAC requirement alongside the minimum regulatory requirements set out in the Basel III framework.

Following the publication of the final TLAC standards for G-SIBs by the FSB, in April 2016, the Financial Services Agency published an explanatory paper outlining its approach for the introduction of the TLAC framework in Japan, and a revised version of this document was published in April 2018. In March 2019, the Financial Services Agency published regulatory notices and related materials to implement the TLAC requirements in Japan, which is phased in for (i) Japanese G-SIBs from March 31, 2019, and (ii) a financial group designated as a D-SIB by the Financial Services Agency which is deemed to be in particular need of a cross-border resolution arrangement and to be of particular systemic significance to the Japanese financial system in the event of its failure (together with Japanese G-SIBs, the “Covered SIBs”) beginning March 31, 2021. According to the Financial Services Agency’s approach above, which is subject to change based on future international discussions, the preferred resolution strategy for Covered SIBs is Single Point of Entry (“SPE”) resolution, in which resolution tools are applied to the ultimate holding company of a group by a single national resolution authority, although the actual measures to be taken will be determined on a case-by-case basis considering the actual condition of the relevant Covered SIB in crisis. To implement this SPE resolution strategy effectively under the FSB’s final TLAC standards and the Japanese TLAC requirements, the ultimate holding company in Japan of the relevant Covered SIB designated as the resolution entity in Japan of such Covered SIB by the Financial Services Agency (the “Domestic Resolution Entity”) is required to (i) meet the minimum external TLAC requirements, and (ii) cause its material subsidiaries or material sub-groups that are designated as systemically important by the Financial Services Agency or that are subject to TLAC requirements or similar requirements by the relevant foreign authority to maintain a certain level of capital and debt recognized as having loss-absorbing and recapitalization capacity, or internal TLAC. Under the Japanese TLAC regulations, the Financial Services Agency designated Mizuho Financial Group as the Domestic Resolution Entity, and designated Mizuho Bank, Mizuho Trust & Banking and Mizuho Securities as Mizuho Financial Group’s material subsidiaries in Japan. External TLAC eligible instruments generally consist of instruments issued by the Domestic Resolution Entity of the relevant Covered SIB that meet the criteria for inclusion in external TLAC requirements and others less any regulatory adjustments. Internal TLAC eligible instruments generally consist of instruments issued by the material subsidiaries of the relevant Covered SIBs designated as systemically important by the Financial Services Agency, which are subject to the internal TLAC requirements such as subordinated debt that meet the criteria for inclusion in internal TLAC requirements and others less any regulatory adjustments.

28

Under the Japanese TLAC regulations, G-SIBs are required to meet a minimum TLAC requirement of at least 16% of the resolution group’s risk-weighted assets as from March 31, 2019 and at least 18% as from March 31, 2022. Minimum TLAC must also be at least 6% of the Basel III leverage ratio denominator from March 31, 2019, and at least 6.75% from March 31, 2022. In addition, Japanese G-SIBs are allowed to count the Japanese Deposit Insurance Fund Reserves in an amount equivalent to 2.5% of their consolidated risk-weighted assets from March 31, 2019, and 3.5% of their consolidated risk-weighted assets from March 31, 2022, as their external TLAC.

In June 2020, in coordination with the monetary policy of the Bank of Japan in response to the impact of COVID-19, the Financial Services Agency amended the TLAC regulations which introduced the temporary measures to exclude the amounts of deposits to the Bank of Japan from the calculation of the external TLAC ratio on a total exposure basis from June 30, 2020 until March 31, 2021, due to the uncertainty on the impact of COVID-19. The implementation period of such temporary measures has been extended twice in March 2021 and March 2022 to the end of March 2024. In addition, in November 2022, the Financial Services Agency amended the TLAC regulations, with effect from April 2024, which will raise the minimum TLAC ratio on a total exposure basis from 6.75% to 7.10%, while continuing to exclude the amounts of deposits at the Bank of Japan from the calculation of the external TLAC ratio on a total exposure basis.

Unless otherwise specified, the regulatory capital and leverage ratio information set forth in this “—Capital Adequacy” is based on the current Basel III rules.

Consolidated Capital Adequacy Ratios, Leverage Ratios and TLAC Ratios

Our consolidated capital adequacy ratios, leverage ratios and TLAC ratios as of March 31 and September 30, 2022, calculated in accordance with Japanese GAAP and the guidelines established by the Financial Services Agency, were as set forth in the following table:

	As of
	March 31, 2022			September 30, 2022			Increase (decrease)
	(in billions of yen, except percentages)
Common Equity Tier 1 (CET1) capital	¥	8,067.2		¥	8,097.7		¥	30.4
Additional Tier 1 capital		1,646.0			1,635.4			(10.5	)
Tier 1 capital		9,713.2			9,733.1			19.8
Tier 2 capital		1,638.3			1,483.4			(154.9	)
Total capital	¥	11,351.6		¥	11,216.5		¥	(135.0	)
Risk-weighted assets	¥	64,730.4		¥	71,336.8		¥	6,606.4
CET1 capital ratio		12.46	%		11.35	%		(1.11	%)
Required CET1 capital ratio(1)		8.01	%		8.01	%		—	%
Tier 1 capital ratio		15.00	%		13.64	%		(1.36	%)
Required Tier 1 capital ratio(1)		9.51	%		9.51	%		—	%
Total capital ratio		17.53	%		15.72	%		(1.81	%)
Required total capital ratio(1)		11.51	%		11.51	%		—	%
CET1 available after meeting the bank’s minimum capital requirements		7.96	%		6.85	%		(1.11	%)
Total Exposure(2)	¥	212,972.0		¥	230,856.4		¥	17,884.4
Leverage ratio(2)		4.56	%		4.21	%		(0.35	%)
External TLAC ratio (risk-weighted assets basis, excluding capital buffers)		24.24	%		23.09	%		(1.15	%)
External TLAC ratio (total exposure basis, including capital buffers)(2)		8.43	%		8.22	%		(0.21	%)

29

Notes:

(1) The required ratios disclosed above, as of March 31 and September 30, 2022, include the capital conservation buffer of 2.5%, the countercyclical capital buffer of 0.01%, and the additional loss absorbency requirements for G-SIBs and D-SIBs of 1.0%, which are all in addition to the regulatory minima. These buffers and additional loss absorbency requirements are applied to us but not to our banking subsidiaries.

(2) Amounts of deposits to the Bank of Japan are excluded from the calculation of the total exposure, the leverage ratio and the external TLAC ratio (total exposure basis, including capital buffers) described above based on the leverage ratio regulations and the TLAC regulations each described above, as applicable.

Our total capital ratio as of September 30, 2022 was 15.72%, a decrease of 1.81% compared to March 31, 2022. Our Tier 1 capital ratio as of September 30, 2022 was 13.64%, a decrease of 1.36% compared to March 31, 2022. Our CET1 capital ratio as of September 30, 2022 was 11.35%, a decrease of 1.11% compared to March 31, 2022. The decrease in our CET1 capital ratio, Tier 1 capital ratio and total capital ratio were due mainly to an increase in the risk weighted assets. We believe that we were in compliance with all capital adequacy requirements to which we were subject as of September 30, 2022.

Principal Banking Subsidiaries

Capital adequacy ratios and leverage ratios of our principal banking subsidiaries, on a consolidated basis, as of March 31 and September 30, 2022, calculated in accordance with Japanese GAAP and the guidelines established by the Financial Services Agency, were as set forth in the following table:

	As of						Increase (decrease)
	March 31, 2022			September 30, 2022
Mizuho Bank
Common Equity Tier 1 capital ratio		11.68	%		10.68	%		(1.00	%)
Tier 1 capital ratio		14.42	%		13.15	%		(1.27	%)
Total capital ratio		17.02	%		15.26	%		(1.76	%)
Leverage ratio		4.32	%		4.01	%		(0.31	%)
Mizuho Trust & Banking
Common Equity Tier 1 capital ratio		25.18	%		26.62	%		1.44	%
Tier 1 capital ratio		25.18	%		26.62	%		1.44	%
Total capital ratio		25.18	%		26.62	%		1.44	%
Leverage ratio		10.20	%		10.56	%		0.36	%

We believe each of our principal banking subsidiaries was in compliance with all capital adequacy requirements as of September 30, 2022.

Our securities subsidiary in Japan is also subject to the capital adequacy requirement under the Financial Instruments and Exchange Act. Under this requirement, securities firms whose total assets exceed ¥1 trillion, such as Mizuho Securities, must maintain a minimum capital adequacy ratio of 120% both on a consolidated and non-consolidated basis calculated as a percentage of capital accounts less certain assets, as determined in accordance with Japanese GAAP, against amounts equivalent to market, counterparty and basic risks. Specific guidelines are issued as a ministerial ordinance and a regulatory notice that detail the definition of essential components of the capital ratios, including capital, disallowed assets and risks, and related measures. Failure to maintain a minimum capital ratio will trigger mandatory regulatory actions. For example, each on a non-consolidated basis, a capital ratio of less than 140% will call for regulatory reporting, a capital ratio of less than 120% may lead to an order to change the business conduct or place the property in trust and a capital ratio of less than 100% may lead to a temporary suspension of all or part of the business operations and further, to the cancellation of the license to act as a securities broker and dealer. We believe, as of September 30, 2022, that our securities subsidiary in Japan was in compliance with all capital adequacy requirements to which it was subject.

30

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Unaudited)

	March 31,           2022			September 30,           2022
	(in millions of yen)
Assets:
Cash and due from banks		2,290,377			2,524,631
Interest-bearing deposits in other banks		49,883,912			53,048,350
Call loans and funds sold		1,102,296			1,454,185
Receivables under resale agreements		12,751,085			14,872,079
Receivables under securities borrowing transactions		2,338,796			2,355,125
Trading account assets (including assets pledged that secured parties are permitted to sell or repledge of ¥4,639,282 million at March 31, 2022 and ¥7,233,590 million at September 30, 2022)		24,652,067			35,330,944
Investments (Note 3):
Available-for-sale securities (including assets pledged that secured parties are permitted to sell or repledge of ¥1,120,839 million at March 31, 2022 and ¥1,389,462 million at September 30, 2022), net of allowance		31,673,890			23,743,660
Held-to-maturity securities (including assets pledged that secured parties are permitted to sell or repledge of ¥1,019,391 million at March 31, 2022 and ¥1,223,062 million at September 30, 2022)		1,519,055			2,072,468
Equity securities		3,572,908			3,439,981
Other investments		582,388			626,148
Loans (Notes 4 and 5)		90,290,583			98,334,291
Allowance for credit losses on loans		(809,817	)		(710,746	)
Loans, net of allowance		89,480,766			97,623,545
Premises and equipment-net		1,704,067			1,680,618
Due from customers on acceptances		271,877			376,369
Accrued income		322,025			422,673
Goodwill		92,695			96,141
Intangible assets		47,939			48,926
Deferred tax assets		277,319			516,091
Other assets (Note 6)		8,987,242			10,519,434
Total assets		231,550,704			250,751,368

The following table presents the assets of consolidated variable interest entities (“VIE”s), which are included in the consolidated balance sheets above. The assets in the table below can be used only to settle obligations of consolidated VIEs.

	March 31,           2022		September 30,           2022
	(in millions of yen)
Assets of consolidated VIEs:
Cash and due from banks		2,243		1,664
Interest-bearing deposits in other banks		71,573		175,768
Call loans and funds sold		162,578		223,503
Trading account assets		2,222,902		2,540,402
Investments		238,624		253,654
Loans, net of allowance		8,347,880		8,503,789
All other assets		529,178		475,885
Total assets		11,574,978		12,174,665

See the accompanying Notes to the Consolidated Financial Statements

F-1

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Unaudited)—(Continued)

	March 31,           2022			September 30,           2022
	(in millions of yen)
Liabilities and equity:
Deposits:
Domestic:
Noninterest-bearing deposits		32,844,872			27,849,570
Interest-bearing deposits		91,425,213			94,941,299
Foreign:
Noninterest-bearing deposits		2,500,823			2,569,090
Interest-bearing deposits		30,407,376			39,592,020
Due to trust accounts		390,247			350,124
Call money and funds purchased		1,278,051			1,572,353
Payables under repurchase agreements (Note 19)		20,069,566			23,767,150
Payables under securities lending transactions (Note 19)		1,360,743			1,490,659
Other short-term borrowings		7,566,771			3,593,275
Trading account liabilities		14,859,383			24,229,013
Bank acceptances outstanding		271,877			376,369
Income taxes payable		62,697			78,575
Deferred tax liabilities		29,033			20,752
Accrued expenses		203,383			316,980
Long-term debt (including liabilities accounted for at fair value of ¥2,756,062 million at March 31, 2022 and ¥2,736,380 million at September 30, 2022) (Note 17)		12,578,216			13,546,803
Other liabilities (Note 6)		6,260,222			7,020,295
Total liabilities		222,108,473			241,314,327
Commitments and contingencies (Note 14)
Equity:
MHFG shareholders’ equity:
Common stock (Note 7)-no par value, authorized 4,800,000,000 shares at March 31, 2022 and September 30, 2022, and issued 2,539,249,894 shares at March 31, 2022 and September 30, 2022		5,816,834			5,832,367
Retained earnings		2,665,608			2,185,055
Accumulated other comprehensive income (loss), net of tax (Note 8)		440,112			698,835
Less: Treasury stock, at cost-Common stock 4,659,024 shares at March 31, 2022, and 4,930,963 shares at September 30, 2022		(8,342	)		(8,552	)
Total MHFG shareholders’ equity		8,914,212			8,707,705
Noncontrolling interests		528,019			729,336
Total equity		9,442,231			9,437,041
Total liabilities and equity		231,550,704			250,751,368

The following table presents the liabilities of consolidated VIEs, which are included in the consolidated balance sheets above. The creditors or investors of the consolidated VIEs have no recourse to the MHFG Group, except where the Group provides credit enhancement through guarantees or other means.

	March 31,           2022		September 30,           2022
	(in millions of yen)
Liabilities of consolidated VIEs:
Payables under securities lending transactions		51,752		118,768
Other short-term borrowings		53,668		129,240
Trading account liabilities		51,019		31,621
Long-term debt		1,024,067		1,217,297
All other liabilities		1,041,938		1,059,776
Total liabilities		2,222,444		2,556,702

See the accompanying Notes to the Consolidated Financial Statements.

F-2

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Interest and dividend income:
Loans, including fees		470,961			748,122
Investments:
Interest		26,458			42,293
Dividends		37,724			37,132
Trading account assets		109,477			189,435
Call loans and funds sold		779			2,263
Receivables under resale agreements and securities borrowing transactions		12,861			87,129
Deposits in other banks		25,841			134,632
Total interest and dividend income		684,101			1,241,006
Interest expense:
Deposits		34,732			265,849
Trading account liabilities		28,488			55,297
Call money and funds purchased		492			5,298
Payables under repurchase agreements and securities lending transactions		13,678			177,958
Other short-term borrowings		1,497			11,088
Long-term debt		81,114			110,453
Total interest expense		160,001			625,943
Net interest income		524,100			615,063
Provision (credit) for credit losses (Notes 3 and 5)		46,053			37,646
Net interest income after provision (credit) for credit losses		478,047			577,417
Noninterest income (Note 16):
Fee and commission income		474,916			448,744
Foreign exchange gains (losses)-net		21,708			128,897
Trading account gains (losses)-net		83,255			(851,080	)
Investment gains (losses)-net:
Debt securities		(317	)		8,057
Equity securities		135,070			(113,461	)
Equity in earnings (losses) of equity method investees-net		16,541			(5,003	)
Gains on disposal of premises and equipment		1,988			1,811
Other noninterest income		29,234			168,254
Total noninterest income (loss)		762,395			(213,781	)
Noninterest expenses:
Salaries and employee benefits		327,085			340,108
General and administrative expenses		294,259			339,648
Occupancy expenses		90,509			82,980
Fee and commission expenses		107,658			102,903
Provision (credit) for credit losses on off-balance-sheet instruments		(4,821	)		5,590
Other noninterest expenses		42,552			55,019
Total noninterest expenses		857,242			926,248
Income (loss) before income tax expense (benefit)		383,200			(562,612	)
Income tax expense (benefit) (Note 11)		39,622			(171,905	)
Net income (loss)		343,578			(390,707	)
Less: Net income (loss) attributable to noncontrolling interests		30,921			(11,830	)
Net income (loss) attributable to MHFG shareholders		312,657			(378,877	)
	(in yen)
Earnings per common share (Note 10):
Basic net income (loss) per common share		123.24			(149.38	)
Diluted net income (loss) per common share		123.24			(149.38	)
Dividends per common share		40.00			42.50

See the accompanying Notes to the Consolidated Financial Statements.

F-3

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Six months ended September 30,
	2021		2022
	(in millions of yen)
Net income (loss) (Note)		343,578		(390,707	)
Other comprehensive income (loss), net of tax		38,196		260,349
Total comprehensive income (loss)		381,774		(130,358	)
Less: Total comprehensive income (loss) attributable to noncontrolling interests		31,446		(10,205	)
Total comprehensive income (loss) attributable to MHFG shareholders		350,328		(120,153	)

Note: The amounts that have been reclassified out of Accumulated other comprehensive income (loss), net of tax into net income are presented in Note 8 “Accumulated other comprehensive income (loss), net of tax.”

See the accompanying Notes to the Consolidated Financial Statements.

F-4

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY (Unaudited)

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Common stock:
Balance at beginning of period		5,826,863			5,816,834
Performance-based stock compensation program		(538	)		(740	)
Change in ownership interests in consolidated subsidiaries		(9,960	)		16,273
Balance at end of period		5,816,365			5,832,367
Retained earnings:
Balance at beginning of period		2,967,385			2,665,608
Net income (loss) attributable to MHFG shareholders		312,657			(378,877	)
Dividends declared		(95,201	)		(101,543	)
Other		(52	)		(133	)
Balance at end of period		3,184,789			2,185,055
Accumulated other comprehensive income (loss), net of tax (Note 8)(Note):
Balance at beginning of period		318,114			440,112
Change during period		37,671			258,723
Balance at end of period		355,785			698,835
Treasury stock, at cost:
Balance at beginning of period		(7,124	)		(8,342	)
Purchases of treasury stock		(2,647	)		(1,941	)
Disposal of treasury stock		1,607			1,731
Balance at end of period		(8,164	)		(8,552	)
Total MHFG shareholders’ equity		9,348,775			8,707,705
Noncontrolling interests:
Balance at beginning of period		582,919			528,019
Transactions between the MHFG Group and the noncontrolling interest shareholders		89,808			226,180
Dividends paid to noncontrolling interests		(10,807	)		(14,658	)
Net income (loss) attributable to noncontrolling interests		30,921			(11,830	)
Other		525			1,625
Balance at end of period		693,366			729,336
Total equity		10,042,141			9,437,041

Note: The amounts that have been reclassified out of Accumulated other comprehensive income (loss), net of tax into net income are presented in Note 8 “Accumulated other comprehensive income (loss), net of tax.”

See the accompanying Notes to the Consolidated Financial Statements.

F-5

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Cash flows from operating activities:
Net income (loss)		343,578			(390,707	)
Less: Net income (loss) attributable to noncontrolling interests		30,921			(11,830	)
Net income (loss) attributable to MHFG shareholders		312,657			(378,877	)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		115,756			126,328
Provision (credit) for credit losses		46,053			37,646
Investment losses (gains)-net		(134,753	)		105,404
Equity in losses (earnings) of equity method investees-net		(16,541	)		5,003
Foreign exchange losses (gains)-net		35,446			739,266
Deferred income tax expense (benefit)		(28,200	)		(239,149	)
Net change in trading account assets		(271,232	)		(9,096,063	)
Net change in trading account liabilities		(1,734,070	)		9,008,728
Net change in loans held for sale		(16,915	)		(122,683	)
Net change in accrued income		13,325			(80,069	)
Net change in accrued expenses		(32,858	)		108,023
Other-net		480,671			(181,041	)
Net cash provided by (used in) operating activities		(1,230,661	)		32,516
Cash flows from investing activities:
Proceeds from sales of Available-for-sale securities		20,872,060			22,862,094
Proceeds from sales of Equity securities (1)		992,927			579,215
Proceeds from maturities of Available-for-sale securities		26,506,201			21,944,842
Proceeds from maturities of Held-to-maturity securities		79,767			79,580
Purchases of Available-for-sale securities		(45,046,101	)		(38,002,539	)
Purchases of Held-to-maturity securities		(542,026	)		(453,020	)
Purchases of Equity securities (1)		(1,311,347	)		(582,312	)
Proceeds from sales of loans		1,038,124			255,831
Net change in loans		496,474			(4,681,239	)
Net change in call loans and funds sold, and receivables under resale agreements and securities borrowing transactions		(4,518,794	)		(1,141,636	)
Proceeds from sales of premises and equipment		2,806			2,362
Purchases of premises and equipment		(52,234	)		(84,327	)
Proceeds from sales of investments in subsidiaries (affecting the scope of consolidation)		5,391			2,872
Purchases of investments in subsidiaries (affecting the scope of consolidation)		(50,723	)		(49,185	)
Net cash provided by (used in) investing activities		(1,527,475	)		732,538
Cash flows from financing activities:
Net change in deposits		(2,187,631	)		4,103,867
Net change in call money and funds purchased, and payables under repurchase agreements and securities lending transactions		3,776,203			1,313,784
Net change in due to trust accounts		28,047			(40,123	)
Net change in other short-term borrowings		(71,262	)		(4,277,836	)
Proceeds from issuance of long-term debt		1,442,089			1,198,626
Repayment of long-term debt		(1,179,807	)		(1,245,843	)
Proceeds from noncontrolling interests		67,785			418
Payments to noncontrolling interests		(1,845	)		(50,642	)
Proceeds from sales of treasury stock		869			1,009
Purchases of treasury stock		(1,825	)		(1,270	)
Dividends paid		(95,198	)		(101,546	)
Dividends paid to noncontrolling interests		(10,807	)		(14,658	)
Net cash provided by financing activities		1,766,618			885,786
Effect of exchange rate changes on cash and cash equivalents		83,750			1,747,852
Net increase (decrease) in cash and cash equivalents (2)		(907,768	)		3,398,692
Cash and cash equivalents at beginning of period (2)		48,734,096			52,174,289
Cash and cash equivalents at end of period (2)		47,826,328			55,572,981
Supplemental disclosure of cash flow information:
Noncash investing activities:
Transfer of loans into loans held-for-sale		15,357			15,744

Notes:

(1) Proceeds from sales of Equity securities as well as Purchases of Equity securities include cash activity related to Other investments, the amounts of which are not significant.

(2) Cash and cash equivalents consists of Cash and due from banks and Interest-bearing deposits in other banks. Cash deposited with central banks that must be maintained to meet minimum regulatory requirements is classified as restricted cash and included in Cash and cash equivalents.

See the accompanying Notes to the Consolidated Financial Statements.

F-6

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. Basis of presentation

Mizuho Financial Group, Inc. (“MHFG”) is a joint stock corporation with limited liability under the laws of Japan. MHFG is a holding company for Mizuho Bank, Ltd. (“MHBK”), Mizuho Trust & Banking Co., Ltd. (“MHTB”), Mizuho Securities Co., Ltd. (“MHSC”), Asset Management One Co., Ltd. (“Asset Management One”), and other subsidiaries. MHFG, through its subsidiaries (“the MHFG Group,” or “the Group”), provides domestic and international financial services in Japan and other countries. For a discussion of the Group’s segment information, see Note 20 “Business segment information.”

MHFG and its domestic subsidiaries as well as its foreign subsidiaries maintain their accounting records in accordance with the accounting standards of Japan and those standards of the countries in which they are domiciled. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform them to the accounting principles generally accepted in the United States of America (“U.S. GAAP”). The consolidated financial statements are stated in Japanese yen, the currency of the country in which MHFG is incorporated and principally operates.

The accompanying consolidated financial statements include the accounts of MHFG and its subsidiaries. MHFG’s interim financial reporting period ends on September 30. Certain of MHFG’s subsidiaries have different interim financial reporting periods than September 30. For those subsidiaries with interim financial reporting periods within three months of MHFG’s interim financial reporting period, the effect of intervening events that materially affect the financial position or results of operations through the date of each of the periods presented in the MHFG’s consolidated financial statements have been considered for adjustment and/or disclosure. When determining whether to consolidate investee entities, the MHFG Group performs an analysis of the facts and circumstances of the particular relationships between the MHFG Group and the investee entities as well as the ownership of voting shares. The consolidated financial statements also include the accounts of VIEs for which MHFG or its subsidiaries have been determined to be the primary beneficiary in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, “Consolidation” (“ASC 810”). All significant intercompany transactions and balances have been eliminated upon consolidation. The MHFG Group accounts for investments in entities over which it has significant influence by using the equity method of accounting. These investments are included in Other investments and the Group’s proportionate share of income or loss is included in Equity in earnings (losses) of equity method investees-net.

Certain comparative amounts for the prior period have been reclassified in order to conform to the current period’s presentation.

The unaudited interim consolidated financial statements should be read in conjunction with the audited financial statements and related notes included in the MHFG Group’s most recent annual report on Form 20-F for the fiscal year ended March 31, 2022.

Certain financial information that is normally included in annual financial statements prepared in accordance with U.S. GAAP, but is not required for interim reporting purposes, has been condensed or omitted.

The financial statements reflect all normal and recurring adjustments that are, in the opinion of management, necessary for a fair presentation of the results for the interim periods.

Use of estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect reported amounts and related disclosures. Specific areas, among

F-7

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

others, requiring the application of management’s estimates and judgment include assumptions pertaining to the allowance for credit losses, valuation of deferred tax assets, valuation of derivative financial instruments, valuation of investments, valuation of certain long-term debt where the fair value option has been elected, valuation of pension and other employee benefits, and impairment of long-lived assets. During times of pandemics, such as COVID-19, geopolitical unrest such as the situation in Russia and Ukraine and the acceleration of global inflation, estimates become more sensitive and it is reasonably possible that actual results could differ from estimates and assumptions made.

Financial instruments—current expected credit losses (“CECL”)

CECL established a single allowance framework for all financial assets measured at amortized cost and certain off-balance-sheet instrument exposures. This framework requires management’s estimate to reflect credit losses over the instrument’s remaining expected life and consider expected future changes in macroeconomic conditions. ASC 326, “Financial Instruments—Credit Losses” (“ASC 326”), replaced the incurred loss impairment methodology in prior U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of information such as relevant information about past events including historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the reported amount, for the purpose of informing credit loss estimates. This ASC requires a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. This ASC also requires that credit losses on available-for-sale debt securities be presented as an allowance for credit losses rather than as a write-down and limits the amount of the allowance for credit losses to the amount by which fair value is below amortized cost. Per the accounting policy election, the MHFG Group does not record expected credit losses for accrued interest receivables because uncollectible accrued interest is reversed through interest income in a timely manner in line with the Group’s nonaccrual and past due policies. The amount of accrued interest receivable reversed through interest income was not significant for March 31, 2022 and September 30, 2022.

Allowance and provision (credit) for credit losses on loans

The MHFG Group makes adjustments to the allowance for credit losses on loans through Provision (credit) for credit losses in the consolidated statements of income in each reporting period. Loan principal that management judges to be uncollectible, based on detailed loan reviews and a credit quality assessment, is charged off against the allowance for credit losses on loans. In general, the Group charges off loans when the Group determines that the obligor should be classified as substantially bankrupt or bankrupt. See Note 4 “Loans” for the definitions of obligor categories. Obligors in the retail portfolio segment are generally determined to be substantially bankrupt when they are past due for more than six months, and as for obligors in the corporate portfolio segment, the Group separately monitors the credit quality of each obligor without using time-based triggers.

The MHFG Group maintains an appropriate allowance for credit losses on loans to represent management’s estimate of the expected credit losses in the Group’s loan portfolio. Management evaluates the appropriateness of the allowance for credit losses on loans semi-annually. The allowance considers expected credit losses over the remaining expected lives of the applicable instruments. The expected life of each instrument is determined by considering expected prepayments, contractual terms and cancellation features. The allowance for credit losses involves significant judgments on a number of matters including expectations of future economic conditions, assignment of obligor ratings, valuation of collateral, and the development of qualitative adjustments.

F-8

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

When determining expected credit losses, a single forward-looking macroeconomic scenario is considered over a reasonable and supportable forecast period. This forward-looking macroeconomic scenario is in line with the scenario used for the Group’s business plan. If the scenario does not reflect a sudden change in economic conditions adequately, adjustments may be made to the scenario. After the forecast period, the Group reverts to long-term historical loss experience with a certain graduated transition period, to estimate losses over the remaining lives of financial assets measured at amortized cost and certain off-balance-sheet instruments. The macroeconomic scenario is updated at least semi-annually and is reviewed to reflect current economic conditions and the Group’s expectation of future conditions on a timely basis. For March 31, 2022 and September 30, 2022, the Group used the most recent macroeconomic scenario available during the Group’s credit loss estimation process.

In terms of the internal risk ratings, for the corporate portfolio segment, the credit quality review process and the credit rating process serve as the basis for determining the allowance for credit losses on loans. Through such processes loans are categorized into groups to reflect the probability of default, whereby the MHFG Group’s management assesses the ability of borrowers to service their debt, taking into consideration current financial information, ability to generate cash, historical payment experience, analysis of relevant industry segments and current trends. For the retail portfolio segment, the different categories of past due status of loans are primarily utilized in the credit quality review and the credit rating processes as the basis for determining the allowance for credit losses on loans.

In general, the MHFG Group estimates expected credit losses collectively on the loans in the case of normal and watch obligors, considering the risk associated with a particular pool and the probability that the exposures within the pool will deteriorate or default. The allowance for credit losses on nonaccrual loans generally includes the allowance for those loans that were individually evaluated for expected credit losses. See Note 4 “Loans” for the definitions of obligor categories and classification of nonaccrual loans.

The estimation of expected credit losses that are evaluated collectively begins with a quantitative calculation that considers the likelihood of the borrower changing delinquency status or moving from one obligor category or rating to another. The quantitative calculation covers expected credit losses over an instrument’s expected life and is estimated by applying credit loss factors to the MHFG Group’s estimated exposure at default. The credit loss factors incorporate the probability of default as well as the loss given default based on the historical loss rates. To supplement the historical loss data for overseas obligors, external credit ratings such as S&P are also used to calculate the probability of default. The model and inputs used to determine credit losses on loans that are evaluated collectively are analyzed on a periodic basis by comparing the estimated values with the actual results subsequent to the balance sheet date.

The MHFG Group divides its overall portfolio into domestic and foreign portfolios and categorizes the domestic portfolio into four portfolio segments according to their risk profiles: corporate, retail, sovereign, and banks and financial institutions.

The corporate portfolio segment consists of loans originated primarily by MHBK and MHTB, and includes mainly business loans such as those used for working capital and capital expenditure, as well as loans for which the primary source of repayment of the obligation is income generated by the relevant assets such as project finance, asset finance and real estate finance. The corporate portfolio segment is divided into two classes based on their risk characteristics: large companies, and small and medium-sized companies. For the corporate portfolio

F-9

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

segment, the MHFG Group considers key economic factors such as gross domestic products for Japan and each relevant foreign location, where the portfolio is significant, and the interest rates in Japan when estimating the credit loss.

The retail portfolio segment consists mainly of residential mortgage loans originated by MHBK, and it is divided into two classes based on their risk characteristics: housing loan and others. For the retail portfolio segment, the Japanese unemployment rate is applied as a key factor. As it pertains to troubled debt restructuring (“TDR”) loans in the retail portfolio segment, the restructuring itself, as well as subsequent payment defaults, if any, are considered in determining obligor categories. Expected credit loss estimates also include consideration of expected cash recoveries on loans previously charged-off, or expected recoveries on collateral dependent loans where recovery is expected through sale of the collateral.

The allowance recorded for individually evaluated loans is based on (1) the present value of expected future cash flows, after considering the restructuring effect and subsequent payment default with respect to TDRs, discounted at the loan’s initial effective interest rate, (2) the loan’s observable market price, or (3) the fair value of the collateral if the loan is collateral dependent. The collateral that the MHFG Group obtains for loans consists primarily of real estate. In obtaining the collateral, the Group evaluates the fair value of the collateral and its legal enforceability. The Group also performs subsequent re-evaluations at least once a year. As it pertains to real estate collateral, valuation is generally performed by an appraising subsidiary which is independent from the Group’s loan origination departments by using generally accepted valuation techniques such as (1) the replacement cost approach, (2) the sales comparison approach or (3) the income approach. In the case of large real estate collateral, the Group generally engages third-party appraisers to perform the valuation.

The MHFG Group’s methodology for determining the appropriate allowance for credit losses on loans also considers the imprecision inherent in the methodologies used. As a result, the amounts determined under the methodologies described above could be adjusted by management to consider the potential impact of other qualitative factors which include, but are not limited to, imprecision in macroeconomic scenario assumptions and emerging risks related to changes in the environment that are affecting specific portfolio segments including segments impacted by the Russia-Ukraine situation. Considering internal and external factors affecting the credit quality of the portfolio, the Group incorporated the estimated impact of COVID-19 pandemic, the Russia-Ukraine situation and the acceleration of global inflation into the macroeconomic scenario by using assumptions such as anticipated business recovery period and current forecast for the growth rate of gross domestic product.

In terms of the Russia-Ukraine situation, considering the country risk arising from the sanctions against Russia and the downgrading of their credit rating, as well as the risk of deterioration in the global economy due to inflation caused by soaring energy prices and the acceleration of supply chain disruptions caused by the withdrawal of operations from Russia, the MHFG Group incorporated an estimate of the Russia-Ukraine situation into the macroeconomic scenario used for determining the allowance for credit losses on loans.

Allowance and provision (credit) for credit losses on off-balance-sheet instruments

The MHFG Group maintains an allowance for credit losses on off-balance-sheet instruments, such as guarantees and standby letters of credit in the same manner as the allowance for credit losses on loans. The Group similarly assesses the expected loss amounts for commitments to invest in securities and commitments to extend credit, considering the probability of drawdowns. The allowance is recorded in Other liabilities. Net changes in the allowance for credit losses on off-balance-sheet instruments are accounted for in Provision (credit) for credit losses on off-balance-sheet instruments in the consolidated statements of income.

F-10

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Allowance and provision (credit) for credit losses on available-for-sale securities

The MHFG Group performs periodic reviews to identify impaired securities in accordance with ASC 326. Available-for-sale securities are impaired if the fair value is less than the amortized cost (excluding accrued interest receivable). For available-for-sale debt securities, in the cases where the Group has the intent to sell an available-for-sale debt security or more likely than not will be required to sell an available-for-sale debt security before the recovery of its amortized cost basis, the entire difference between amortized cost basis and fair value is recognized immediately through earnings. In other cases, the Group evaluates expected cash flows to be received and determines if a credit loss exists, and if so, the amount of the credit loss is recognized in Provision (credit) for credit losses, while the remaining decline in fair value is recognized in other comprehensive income, net of applicable taxes. For additional information, see Note 4 “Loans.”

2. Issued accounting pronouncements

Adopted accounting pronouncements

In March 2020, the FASB issued ASU No.2020-04, “Reference Rate Reform (Topic 848)—Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU No.2020-04”). The ASU provides optional expedients and exceptions for contracts, hedging relationships, and other transactions affected by reference rate reform. In January 2021, the FASB issued ASU No.2021-01, “Reference Rate Reform (Topic 848)—Scope” (“ASU No.2021-01”). The ASU clarifies that certain optional expedients and exceptions for contract modifications and hedge accounting apply to derivatives that are affected by the transition. In December 2022, the FASB issued ASU No.2022-06, “Reference Rate Reform (Topic 848)—Deferral of the Sunset Date of Topic 848” (“ASU No.2022-06”). The ASU amends the sunset date of Topic 848 to December 31, 2024 from December 31, 2022. ASU No.2020-04 is effective as of March 12, 2020 through December 31, 2024. ASU No.2021-01 is effective as of January 7, 2021 through December 31, 2024. ASU No.2022-06 is effective as of December 21, 2022 through December 31, 2024. The MHFG Group has elected the practical expedient for modifications of contracts. The practical expedient provides an election to account for certain contract amendments related to reference rate reform without the requirement to assess the significance of the modifications. The main reason for applying the practical expedient is to ease the administrative burden of accounting for contracts impacted by reference rate reform. This election has not had, and is expected to not have, a material impact on the Group’s consolidated results of operations or financial condition.

Accounting pronouncements issued but not yet effective as of September 30, 2022

In March 2022, the FASB issued ASU No.2022-02, “Financial Instruments—Credit Losses (Topic 326)—Troubled Debt Restructurings and Vintage Disclosures” (“ASU No.2022-02”). The amendments in this update eliminate the accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity must apply the loan refinancing and restructuring guidance in paragraphs 310-20-35-9 through 35-11 to determine whether a modification results in a new loan or a continuation of an existing loan. The amendments in this update also require that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of Topic 326. The MHFG Group expects to adopt ASU No.2022-02 on April 1, 2023. The Group does not expect that the adoption of ASU No.2022-02 will have a material impact on its consolidated results of operations or financial condition, and on disclosures in its consolidated financial statements.

F-11

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

3. Investments

Available-for-sale and held-to-maturity securities

The amortized cost, net of allowance for credit losses, gross unrealized gains and losses, and fair value of available-for-sale and held-to-maturity securities at March 31, 2022 and September 30, 2022 are as follows:

	Amortized cost (4)(5)		Gross unrealized gains		Gross unrealized losses		Fair value
	(in millions of yen)
March 31, 2022
Available-for-sale securities:
Debt securities:
Japanese government bonds		25,191,315		5,794		38,379		25,158,730
Japanese local government bonds		421,557		254		2,165		419,646
U.S. Treasury bonds and federal agency securities		381,653		—		8,444		373,209
Other foreign government bonds		1,338,295		220		2,578		1,335,937
Agency mortgage-backed securities (1)		452,830		1,695		3,985		450,540
Residential mortgage-backed securities		58,246		194		312		58,128
Commercial mortgage-backed securities		848,568		5,437		214		853,791
Japanese corporate bonds and other debt securities		2,222,670		14,212		1,705		2,235,177
Foreign corporate bonds and other debt securities (2)		787,263		2,490		1,021		788,732
Total		31,702,397		30,296		58,803		31,673,890
Held-to-maturity securities:
Debt securities:
Japanese government bonds		479,980		5,101		—		485,081
Agency mortgage-backed securities (3)		1,039,075		24		58,604		980,495
Total		1,519,055		5,125		58,604		1,465,576
September 30, 2022
Available-for-sale securities:
Debt securities:
Japanese government bonds		17,134,700		6,614		38,011		17,103,303
Japanese local government bonds		500,473		149		3,959		496,663
U.S. Treasury bonds and federal agency securities		448,530		—		13,737		434,793
Other foreign government bonds		1,284,950		97		4,804		1,280,243
Agency mortgage-backed securities (1)		500,825		1,112		7,579		494,358
Residential mortgage-backed securities		52,866		97		863		52,100
Commercial mortgage-backed securities		864,060		4,838		321		868,577
Japanese corporate bonds and other debt securities		2,115,489		10,422		4,095		2,121,816
Foreign corporate bonds and other debt securities (2)		891,279		2,193		1,665		891,807
Total		23,793,172		25,522		75,034		23,743,660
Held-to-maturity securities:
Debt securities:
Japanese government bonds		839,581		3,973		667		842,887
Agency mortgage-backed securities (3)		1,232,887		—		183,109		1,049,778
Total		2,072,468		3,973		183,776		1,892,665

Notes:

(1) Agency mortgage-backed securities presented in this line consist of Japanese and Foreign agency mortgage-backed securities, of which the fair values were ¥450,507 million and ¥33 million, respectively, at March 31, 2022, and ¥494,324 million and ¥34 million, respectively, at September 30, 2022. All Japanese agency mortgage-backed securities are issued by Japan Housing Finance Agency, a Japanese government-sponsored enterprise. Foreign agency mortgage-backed securities primarily consist of Government National Mortgage Association (“Ginnie Mae”) securities, which are guaranteed by the United States government.

(2) Other debt securities presented in this line primarily consist of Foreign negotiable certificates of deposit (“NCDs”) and asset-backed securities (“ABS”), of which the total fair values were ¥247,762 million at March 31, 2022, and ¥226,762 million at September 30, 2022.

(3) All Agency mortgage-backed securities presented in this line are Ginnie Mae securities.

F-12

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

(4) Amortized cost, net of the allowance for credit losses, of which the amounts related to available-for-sale securities were ¥34,326 million at March 31, 2022, and ¥nil at September 30, 2022.  

(5) Accrued interest receivables are excluded from amortized cost, of which the amount were ¥4,702 million at March 31, 2022, and ¥5,274 million at September 30, 2022 and included in Accrued income. 

Contractual maturities

The amortized cost, net of allowance for credit losses, and fair value of available-for-sale and held-to-maturity securities at September 30, 2022 are shown in the table below based on their contractual maturities. Expected maturities may differ from contractual maturities because some securities are not due at a single maturity date, and some securities, such as mortgage-backed securities, contain embedded call or prepayment options.

Amortized cost	Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Total
	(in millions of yen)
Available-for-sale securities:
Debt securities:
Japanese government bonds		13,784,027		1,527,715		1,695,453		127,505		17,134,700
Japanese local government bonds		31,462		254,156		207,348		7,507		500,473
U.S. Treasury bonds and federal agency securities		289,397		159,133		—		—		448,530
Other foreign government bonds		1,081,620		200,767		1,283		1,280		1,284,950
Agency mortgage-backed securities		—		—		1,235		499,590		500,825
Residential mortgage-backed securities		—		—		—		52,866		52,866
Commercial mortgage-backed securities		5,000		518,740		340,320		—		864,060
Japanese corporate bonds and other debt securities		275,168		1,263,577		253,180		323,564		2,115,489
Foreign corporate bonds and other debt securities		485,021		298,537		88,524		19,197		891,279
Total		15,951,695		4,222,625		2,587,343		1,031,509		23,793,172
Held-to-maturity securities:
Debt securities:
Japanese government bonds		319,987		249,965		269,629		—		839,581
Agency mortgage-backed securities		—		—		—		1,232,887		1,232,887
Total		319,987		249,965		269,629		1,232,887		2,072,468
Fair value	Due in one year or less		Due after one year through five years		Due after five years through ten years		Due after ten years		Total
	(in millions of yen)
Available-for-sale securities:
Debt securities:
Japanese government bonds		13,785,916		1,523,649		1,674,710		119,028		17,103,303
Japanese local government bonds		31,490		253,676		204,283		7,214		496,663
U.S. Treasury bonds and federal agency securities		282,356		152,437		—		—		434,793
Other foreign government bonds		1,079,499		198,182		1,282		1,280		1,280,243
Agency mortgage-backed securities		—		—		1,229		493,129		494,358
Residential mortgage-backed securities		—		—		—		52,100		52,100
Commercial mortgage-backed securities		4,997		521,126		342,454		—		868,577
Japanese corporate bonds and other debt securities		275,173		1,262,115		252,101		332,427		2,121,816
Foreign corporate bonds and other debt securities		484,357		298,704		88,589		20,157		891,807
Total		15,943,788		4,209,889		2,564,648		1,025,335		23,743,660
Held-to-maturity securities:
Debt securities:
Japanese government bonds		321,991		251,598		269,298		—		842,887
Agency mortgage-backed securities		—		—		—		1,049,778		1,049,778
Total		321,991		251,598		269,298		1,049,778		1,892,665

F-13

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Credit losses

Allowance for credit losses on available-for-sale securities decreased by ¥3 billion from March 31, 2021 to ¥11 billion as of September 30, 2021 due mainly to a decrease of credit losses for certain Japanese corporate bonds and other debt securities, not due to the reduction or sale of securities during the period. The MHFG Group did not recognize allowance for credit losses on available-for-sale securities as of September 30, 2022, a decrease by ¥34 billion from March 31, 2022. The decrease was due to a sale of certain Japanese corporate bonds and other debt securities during the period. The Group did not recognize allowance for credit losses on held-to-maturity securities on March 31 and September 30, 2021 and March 31 and September 30, 2022 because held-to-maturity securities consist of Japanese government bond and agency mortgage-backed securities like Ginnie Mae securities. See Note 1 “Basis of presentation” for further details of the methodology used to determine the allowance for credit losses.

Continuous unrealized loss position

The following table shows the gross unrealized losses, net of allowance for credit losses, and fair value of available-for-sale securities, aggregated by the length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2022 and September 30, 2022:

	Less than 12 months				12 months or more				Total
	Fair value		Gross unrealized losses		Fair value		Gross unrealized losses		Fair value		Gross unrealized losses
	(in millions of yen)
March 31, 2022
Available-for-sale securities:
Debt securities:
Japanese government bonds		19,407,878		11,377		1,565,950		27,002		20,973,828		38,379
Japanese local government bonds		229,562		1,277		136,733		888		366,295		2,165
U.S. Treasury bonds and federal agency securities		321,073		7,209		41,555		1,235		362,628		8,444
Other foreign government bonds		729,134		2,178		71,647		400		800,781		2,578
Agency mortgage-backed securities (Note)		183,150		2,326		78,717		1,659		261,867		3,985
Residential mortgage-backed securities		9,221		11		17,193		301		26,414		312
Commercial mortgage-backed securities		58,815		185		13,939		29		72,754		214
Japanese corporate bonds and other debt securities		605,067		1,516		53,020		189		658,087		1,705
Foreign corporate bonds and other debt securities		302,569		692		53,338		329		355,907		1,021
Total		21,846,469		26,771		2,032,092		32,032		23,878,561		58,803
September 30, 2022
Available-for-sale securities:
Debt securities:
Japanese government bonds		2,725,251		5,019		1,640,200		32,992		4,365,451		38,011
Japanese local government bonds		283,423		2,123		173,980		1,836		457,403		3,959
U.S. Treasury bonds and federal agency securities		373,689		11,682		48,585		2,055		422,274		13,737
Other foreign government bonds		813,981		3,014		208,218		1,790		1,022,199		4,804
Agency mortgage-backed securities (Note)		222,199		3,457		128,252		4,122		350,451		7,579
Residential mortgage-backed securities		25,540		404		15,278		459		40,818		863
Commercial mortgage-backed securities		65,732		168		45,097		153		110,829		321
Japanese corporate bonds and other debt securities		1,470,008		3,741		365,809		354		1,835,817		4,095
Foreign corporate bonds and other debt securities		346,861		1,102		55,116		563		401,977		1,665
Total		6,326,684		30,710		2,680,535		44,324		9,007,219		75,034

Note: Agency mortgage-backed securities presented in this line consist of Japanese agency mortgage-backed securities, of which the fair values were ¥261,867 million at March 31, 2022, and ¥350,451 million at September 30, 2022. All Japanese agency mortgage-backed securities are issued by Japan Housing Finance Agency, a Japanese government-sponsored enterprise.

F-14

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

At September 30, 2022, the MHFG Group did not intend to sell the debt securities in an unrealized loss position and it was not more likely than not that the Group would be required to sell them before the recovery of their amortized cost bases. For Japanese government bonds, U.S. Treasury bonds and federal agency securities and Agency mortgage-backed securities, their entire amortized cost bases were expected to be recovered since the unrealized losses had not resulted from credit deterioration, but primarily from changes in interest rates. For the debt securities other than those described above, except for the securities for which credit losses have been recognized in income, the Group determined that their entire amortized cost bases were expected to be recovered, after considering various factors such as the extent to which their fair values were below their amortized cost bases, the external and/or internal ratings and the present values of cash flows expected to be collected. Based on the aforementioned evaluation, except for the securities for which credit losses have been recognized in income, the Group determined that the debt securities in an unrealized loss position were not considered credit losses.

Realized gains and losses

The following table shows the realized gains and losses on sales of available-for-sale securities for the six months ended September 30, 2021 and 2022. See “Consolidated Statements of Cash Flows (Unaudited)” for the proceeds from sales of investments.

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Gross realized gains		4,687			15,905
Gross realized losses		(3,925	)		(9,151	)
Net realized gains (losses) on sales of available-for-sale securities		762			6,754

Equity securities

Equity securities include securities which have readily determinable fair values, securities which qualify for the practical expedient to estimate fair value using the net asset value per share (or its equivalent), and securities which are without readily determinable fair values. Equity securities which have readily determinable fair values mainly consist of common stock of Japanese listed companies. Equity securities which are measured based on the net asset value per share (or its equivalent) consist of private equity and real estate funds. Equity securities without readily determinable fair values include non-marketable stock including preferred stock issued by equity method investees.

Net gains and losses

The following table shows the details of the net gains and losses on Equity securities for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,
	2021		2022
	(in millions of yen)
Net gains (losses) recognized during the period on equity securities		135,070		(113,461	)
Less: Net gains (losses) recognized during the period on equity securities sold during the period		29,552		7,246
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting period		105,518		(120,707	)

F-15

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Equity securities without readily determinable fair values

The following table shows carrying amounts of equity securities without readily determinable fair values, for which the measurement alternative is used, and cumulative amounts due to downward adjustments and impairments and upward adjustments, at March 31, 2022 and September 30, 2022:

	March 31, 2022		September 30, 2022
	(in millions of yen)
Carrying amounts at the end of the period		207,407		193,297
Downward adjustments and impairments		6,519		6,887
Upward adjustments		11,623		12,225

The following table shows amounts recognized in earnings during the period due to downward adjustments and impairments and upward adjustments for equity securities without readily determinable fair values.

	Six months ended September 30,
	2021		2022
	(in millions of yen)
Downward adjustments and impairments		1,704		799
Upward adjustments		14,950		669

The MHFG Group elected to measure all equity securities without readily determinable fair values, which do not qualify for the practical expedient to estimate fair value, using the measurement alternative, which is made on an instrument-by-instrument basis. Under the measurement alternative, equity securities are carried at cost plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar securities of the same issuer. In addition, the MHFG Group assesses whether these equity securities are impaired. Impairment is primarily based on a liquidation value technique that considers the financial condition, credit ratings, and near-term prospects of the issuers. When the observable price changes or impairments exist, the securities are adjusted to fair value, with the full difference between the fair value of the security and its carrying amount recognized in earnings.

Other investments

The following table summarizes the composition of Other investments at March 31, 2022 and September 30, 2022:

	March 31, 2022		September 30, 2022
	(in millions of yen)
Equity method investments		519,552		556,778
Investments held by consolidated investment companies and other		62,836		69,370
Total		582,388		626,148

Equity method investments

Investments in investees over which the MHFG Group has the ability to exert significant influence are accounted for using the equity method of accounting. Such investments included marketable equity securities with carrying values of ¥255,336 million and ¥268,393 million, at March 31, 2022 and September 30, 2022, respectively. The

F-16

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

aggregate market values of these marketable equity securities were ¥456,195 million and ¥452,342 million, respectively. The majority of the aggregate market values of these marketable equity securities include Orient Corporation, the Chiba Kogyo Bank, Ltd., Joint Stock Commercial Bank for Foreign Trade of Vietnam and Mizuho Leasing Company, Limited of which the MHFG Group’s proportionate share of the total outstanding common stock were 49.00%, 16.89%, 15.00% and 23.54%, respectively, as of September 30, 2022. In addition, equity method investments include non-marketable equity securities such as Matthews International Capital Management, LLC and Custody Bank of Japan, Ltd. of which the MHFG Group’s proportionate share of the total outstanding common stock were 18.29% and 27.00%, respectively, as of September 30, 2022.

Investments held by consolidated investment companies

The MHFG Group consolidates certain investment companies over which it has control through either ownership or other means. Investment companies are subject to specialized industry accounting which requires investments to be carried at fair value, with changes in fair value recorded in earnings. The MHFG Group maintains this specialized industry accounting for investments held by consolidated investment companies, which consist of marketable and non-marketable investments.

4. Loans

Credit quality information

In accordance with the MHFG Group’s credit risk management policies, the Group uses an internal rating system that consists of credit ratings for the corporate portfolio segment and pool allocations for the retail portfolio segment as the basis of its risk management infrastructure. Credit ratings consist of obligor ratings which represent the level of credit risk of the obligor, and transaction ratings which represent the ultimate possibility of losses expected on individual loans by taking into consideration various factors such as collateral or guarantees involved. In principle, obligor ratings are applied to all obligors except those to which pool allocations are applied, and are subject to regular review at least once a year as well as special review which is required whenever the obligor’s credit standing changes. Pool allocations are applied to small loans that are less than a specified amount by pooling customers and loans with similar risk characteristics, and the risk is assessed mainly based on past due status and managed according to such pools. The Group generally reviews the appropriateness and effectiveness of the approach to obligor ratings and pool allocations once a year in accordance with predetermined policies and procedures.

The Group does not record expected credit losses for accrued interest receivables because uncollectible accrued interest is reversed through interest income in a timely manner in line with the Group’s nonaccrual and past due policies for loans. The amount of accrued interest receivables was ¥80,959 million and ¥145,845 million at March 31, 2022 and September 30, 2022, respectively and included in Accrued income.

The Group does not believe that its exposure to any particular geographic area and business sector results in a significant concentration of credit risk.

F-17

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The table below presents the MHFG Group’s definition of obligor ratings used by MHBK and MHTB, and equivalent obligor ratings are determined for the other subsidiaries:

Obligor category (1)(2)	Obligor rating	Definition
Normal	A	Obligors whose certainty of debt fulfillment is very high, hence their level of credit risk is very low.
	B	Obligors whose certainty of debt fulfillment poses no problems for the foreseeable future, and their level of credit risk is low.
	C	Obligors whose certainty of debt fulfillment and their level of credit risk pose no problems for the foreseeable future.
	D	Obligors whose current certainty of debt fulfillment poses no problems, however, their resistance to future economic environmental changes is low.
Watch	E1	Obligors that require observation going forward because of either minor concerns regarding their financial position, or their somewhat weak or unstable business conditions.
	E2	Obligors that require special observation going forward because of problems with their borrowings such as reduced or suspended interest payments, problems with debt fulfillment such as failure to make principal or interest payments, or problems with their financial position as a result of their weak or unstable business conditions.
Intensive control	F	Obligors that are not yet bankrupt but are in financial difficulties and are deemed likely to become bankrupt in the future because of insufficient progress in implementing their management improvement plans or other measures (including obligors that are receiving ongoing support from financial institutions).
Substantially bankrupt	G	Obligors that have not yet become legally or formally bankrupt but are substantially insolvent because they are in serious financial difficulties and are deemed to be incapable of being restructured.
Bankrupt	H	Obligors that have become legally or formally bankrupt.

Notes:

(1) Special attention obligors are watch obligors with debt in TDR or 90 days or more delinquent debt. Loans to such obligors are considered nonaccrual.

(2) The Group classifies loans to special attention, intensive control, substantially bankrupt and bankrupt obligors as nonaccrual loans.

F-18

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The table below presents credit quality information of loans based on the MHFG Group’s internal rating system at March 31, 2022 and September 30, 2022:

	March 31, 2022
	Term loans by origination year												Revolving Loans		Total
	2021		2020		2019		2018		2017		Prior to 2017
	(in millions of yen)
Domestic:
Corporate:
Large companies:
Normal obligors		12,236,438		6,640,211		5,049,408		4,535,083		1,678,591		3,378,926		7,155,041		40,673,698
Watch obligors excluding special attention obligors		145,167		69,404		71,937		66,122		40,205		50,499		127,319		570,653
Nonaccrual loans		60,525		100,975		201,375		44,919		135,777		77,602		178,416		799,589
Small and medium-sized companies:
Normal obligors		540,315		396,611		376,056		283,061		170,952		494,420		547,726		2,809,141
Watch obligors excluding special attention obligors		44,488		31,196		29,597		31,919		12,231		32,511		25,277		207,219
Nonaccrual loans		17,866		20,110		14,434		10,817		7,081		38,171		32,081		140,560
Retail:
Housing Loan:
Normal obligors		798,354		544,246		518,662		526,828		543,893		4,752,430		—		7,684,413
Watch obligors excluding special attention obligors		1,512		1,485		1,510		1,939		1,226		40,243		—		47,915
Nonaccrual loans		12,510		3,132		802		1,180		970		30,598		—		49,192
Others:
Normal obligors		195,545		277,015		111,702		90,880		60,919		315,375		497,173		1,548,609
Watch obligors excluding special attention obligors		23,586		34,974		10,177		7,995		4,122		6,388		9,491		96,733
Nonaccrual loans		6,932		7,862		3,157		4,253		4,076		22,951		12,602		61,833
Sovereign:
Normal obligors		938,534		105,966		89,385		108,664		54,580		351,876		1,864		1,650,869
Watch obligors excluding special attention obligors		3,933		4,205		859		366		113		—		—		9,476
Nonaccrual loans		—		—		—		—		—		—		—		—
Banks and other financial institutions:
Normal obligors		45,825		23,757		131,932		211,445		3		143,717		125,078		681,757
Watch obligors excluding special attention obligors		—		—		—		—		—		—		—		—
Nonaccrual loans		—		—		—		—		—		—		—		—
Total domestic		15,071,530		8,261,149		6,610,993		5,925,471		2,714,739		9,735,707		8,712,068		57,031,657
Foreign:
Corporate (4):
Normal obligors		14,087,409		3,571,416		3,236,191		1,392,231		550,082		1,228,924		5,906,045		29,972,298
Watch obligors excluding special attention obligors		316,387		179,555		73,656		55,876		28,325		25,384		122,410		801,593
Nonaccrual loans		35,801		1,622		13,743		17,181		14,743		22,639		9,745		115,474
Retail:
Normal obligors		2,403		1,774		1,858		1,013		532		3,089		15		10,684
Watch obligors excluding special attention obligors		—		—		37		—		—		13		—		50
Nonaccrual loans		—		—		—		—		—		—		—		—
Sovereign:
Normal obligors		278,373		6,856		33,225		15,194		174,298		3,079		74,923		585,948
Watch obligors excluding special attention obligors		—		—		—		—		—		—		—		—
Nonaccrual loans		—		—		643		—		—		—		—		643
Banks and other financial institutions:
Normal obligors		1,003,709		254,232		150,505		224,571		12,041		709		120,088		1,765,855
Watch obligors excluding special attention obligors		5,544		—		—		—		—		—		—		5,544
Nonaccrual loans		837		—		—		—		—		—		—		837
Total foreign		15,730,463		4,015,455		3,509,858		1,706,066		780,021		1,283,837		6,233,226		33,258,926
Total		30,801,993		12,276,604		10,120,851		7,631,537		3,494,760		11,019,544		14,945,294		90,290,583

F-19

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

	September 30, 2022
	Term loans by origination year												Revolving Loans		Total
	2022		2021		2020		2019		2018		Prior to 2018
	(in millions of yen)
Domestic:
Corporate:
Large companies:
Normal obligors		7,870,700		7,071,371		5,977,206		4,621,144		3,938,164		4,418,492		7,791,782		41,688,859
Watch obligors excluding special attention obligors		65,982		73,932		63,547		84,634		68,093		74,857		129,011		560,056
Nonaccrual loans		78,466		56,229		71,920		121,977		38,086		133,924		174,556		675,158
Small and medium-sized companies:
Normal obligors		310,377		372,070		329,472		310,103		266,522		649,254		505,667		2,743,465
Watch obligors excluding special attention obligors		29,976		24,222		27,907		20,911		21,311		36,433		21,800		182,560
Nonaccrual loans		23,808		14,072		17,798		8,410		8,240		30,351		29,840		132,519
Retail:
Housing Loan:
Normal obligors		420,132		634,709		506,226		491,602		501,271		5,003,449		—		7,557,389
Watch obligors excluding special attention obligors		406		1,740		1,336		1,111		1,516		35,357		—		41,466
Nonaccrual loans		5,956		4,636		1,956		827		1,015		28,836		—		43,226
Others:
Normal obligors		119,310		116,244		254,202		95,347		78,029		335,135		488,953		1,487,220
Watch obligors excluding special attention obligors		14,027		11,090		28,236		7,497		5,246		7,230		8,067		81,393
Nonaccrual loans		8,083		4,745		7,379		2,615		3,411		22,147		10,802		59,182
Sovereign:
Normal obligors		950,117		190,195		103,654		94,458		98,581		367,373		—		1,804,378
Watch obligors excluding special attention obligors		4,517		2,538		3,464		321		291		—		—		11,131
Nonaccrual loans		—		—		—		—		—		—		—		—
Banks and other financial institutions:
Normal obligors		74,820		17,641		23,286		136,043		244,377		143,685		133,705		773,557
Watch obligors excluding special attention obligors		—		—		—		—		—		—		—		—
Nonaccrual loans		—		—		—		—		—		—		—		—
Total domestic		9,976,677		8,595,434		7,417,589		5,997,000		5,274,153		11,286,523		9,294,183		57,841,559
Foreign:
Corporate (4):
Normal obligors		13,959,808		5,923,058		3,131,452		3,045,313		1,334,469		1,655,488		7,228,807		36,278,395
Watch obligors excluding special attention obligors		227,650		131,936		184,554		74,298		47,282		55,384		120,772		841,876
Nonaccrual loans		5,563		35,354		14,106		51,952		14,308		38,660		9,983		169,926
Retail:
Normal obligors		1,221		1,868		1,733		1,850		941		3,278		13		10,904
Watch obligors excluding special attention obligors		—		—		—		—		—		24		—		24
Nonaccrual loans		—		—		—		—		—		—		—		—
Sovereign:
Normal obligors		120,147		260,281		10,594		35,025		11,735		209,034		78,650		725,466
Watch obligors excluding special attention obligors		—		—		—		—		—		—		—		—
Nonaccrual loans		—		—		—		676		—		—		—		676
Banks and other financial institutions:
Normal obligors		1,371,469		439,563		118,506		129,568		29,016		14,155		323,374		2,425,651
Watch obligors excluding special attention obligors		8,912		8,345		8,082		14,475		—		—		—		39,814
Nonaccrual loans		—		—		—		—		—		—		—		—
Total foreign		15,694,770		6,800,405		3,469,027		3,353,157		1,437,751		1,976,023		7,761,599		40,492,732
Total		25,671,447		15,395,839		10,886,616		9,350,157		6,711,904		13,262,546		17,055,782		98,334,291

Notes:

(1) Special attention obligors are watch obligors with debt in TDR or 90 days or more delinquent debt. Loans to such obligors are considered nonaccrual.

F-20

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

(2) The primary component of the retail portfolio segment is housing loans to individuals which obligor category is classified based on past due status. The trigger to reclassify obligors from normal obligors to watch obligors excluding special attention obligors is when the past due status is more than 30 days.

(3) There were no significant revolving line of credit arrangements that converted to term loans during the fiscal year ended March 31, 2022 and the six months ended September 30, 2022.

(4) Corporate of foreign included ¥216,463 million and ¥214,819 million of lease receivables that were receivables arising from direct financing leasing at March 31, 2022 and September 30, 2022, respectively.

Loans are generally carried at the principal amount adjusted for unearned income and deferred net nonrefundable loan fees and costs. Loan origination fees, net of certain direct origination costs, are deferred and recognized over the contractual life of the loan as an adjustment of yield using a method that approximates the interest method. Interest income on performing loans is accrued and credited to income as it is earned. Unearned income and discounts or premiums on purchased loans are deferred and recognized over the life of the loan using a method that approximates the interest method.

The Group uses, as a practical expedient, the fair value of the collateral when recording the net carrying amounts of loans and determining the allowance for credit losses of such loans, for which the repayment is expected to be provided substantially through the operation or sale of the collateral, when the borrower is experiencing financial difficulty based on the assessment as of the reporting date. As of September 30, 2022, collateral relating to these loans was primarily comprised of real estate. There were no significant changes in the extent to which collateral secures these loans during this period and no significant concentration of collateral against any portfolio segment.

Nonaccrual loans

Loans are considered nonaccrual when, based on current information and events, it is probable that the MHFG Group will be unable to collect all the scheduled payments of principal and interest when due according to the contractual terms of the loans. Factors considered by management in determining if a loan is nonaccrual include delinquency status and the ability of the debtor to make payments of the principal and interest when due. The Group classifies loans to special attention, intensive control, substantially bankrupt and bankrupt obligors as nonaccrual loans. Nonaccrual loans include loans past due for 90 days or more and restructured loans that meet the definition of a TDR in accordance with ASC 310, “Receivables” (“ASC 310”). There are no loans that are 90 days past due and still accruing. The Group does not have any loans to borrowers that cause management to have serious doubts as to the ability of such borrowers to comply with the present loan repayment terms for the periods presented other than those already designated as nonaccrual loans. The majority of nonaccrual loans have no contractual delinquency due to interest reductions and/or postponement of principal and interest.

In case loans are designated as nonaccrual loans, interest accruals and the amortization of net origination fees are suspended and capitalized interest is written off. Cash received on nonaccrual loans is accounted for as a reduction of the loan principal if the ultimate collectability of the principal amount is in doubt, otherwise, as interest income. Loans are not restored to accrual status until interest and principal payments are current and future payments are reasonably assured. Nonaccrual loans are restored to accrual loans and accrual status, when the MHFG Group determines that the borrower poses no concerns regarding current certainty of debt fulfillment. In general, such determination is made if the borrower qualifies for an obligor rating of E2 or above and is not classified as a special attention obligor. With respect to loans restructured in a TDR, in general, such loans are

F-21

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

restored to accrual loans, and accrual status, when the borrower qualifies for an obligor rating of D or above. The table below presents nonaccrual loans information at March 31, 2022 and September 30, 2022:

	March 31, 2022						September 30, 2021
	Amortized cost(1)
	Nonaccrual loans with an allowance		Nonaccrual loans without an allowance		Total nonaccrual loans		Interest income recognized(2)
	(in millions of yen)
Domestic:
Corporate:
Large companies		783,305		16,284		799,589		6,787
Small and medium-sized companies		121,598		18,962		140,560		867
Retail:
Housing Loan		26,812		22,380		49,192		477
Others		40,155		21,678		61,833		406
Total domestic		971,870		79,304		1,051,174		8,537
Foreign:
Total foreign		110,284		6,670		116,954		843
Total		1,082,154		85,974		1,168,128		9,380

	September 30, 2022						September 30, 2022
	Amortized cost(1)
	Nonaccrual loans with an allowance		Nonaccrual loans without an allowance		Total nonaccrual loans		Interest income recognized(2)
	(in millions of yen)
Domestic:
Corporate:
Large companies		657,323		17,835		675,158		10,009
Small and medium-sized companies		114,001		18,518		132,519		803
Retail:
Housing Loan		23,491		19,735		43,226		399
Others		38,446		20,736		59,182		377
Total domestic		833,261		76,824		910,085		11,588
Foreign:
Total foreign		162,601		8,001		170,602		1,572
Total		995,862		84,825		1,080,687		13,160

Notes:

(1) Amounts represent the outstanding balances of nonaccrual loans. The MHFG Group’s policy for placing loans in nonaccrual status corresponds to the Group’s definition of nonaccrual loans.

(2) Amounts represent the amount of interest income on nonaccrual loans recognized on a cash basis and included in Interest income on loans in the consolidated statements of income.

(3) The majority of total foreign consist of corporate.

The remaining balance of nonaccrual loans that have been partially charged off, was ¥13,046 million and ¥15,265 million as of March 31, 2022 and September 30, 2022, respectively.

F-22

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Troubled debt restructurings

The MHFG Group considers a loan modification to be a TDR when, for economic or legal reasons related to the obligor’s financial difficulties, it grants a concession to the obligor that it would not otherwise consider. The Group considers the relevant obligor to be in financial difficulty generally when its obligor rating is E2 or below. The following table presents modified loans that were determined to be TDRs during the six months ended September 30, 2021 and 2022:

	Loan forgiveness or debt to equity swaps				Interest rate reduction and/or postponement of principal and/or interest
	Recorded investment (1)		Charge-offs
	(in millions of yen)
September 30, 2021
Domestic:
Corporate:
Large companies		5,849		22,757		375,248
Small and medium-sized companies		—		—		60,856
Retail:
Housing Loan		—		—		4,996
Others		—		—		10,288
Total domestic		5,849		22,757		451,388
Foreign:
Total foreign		—		—		21,206
Total		5,849		22,757		472,594
September 30, 2022
Domestic:
Corporate:
Large companies		—		140,371		256,773
Small and medium-sized companies		—		—		55,424
Retail:
Housing Loan		—		—		3,257
Others		—		—		9,557
Total domestic		—		140,371		325,011
Foreign:
Total foreign		—		—		20,779
Total		—		140,371		345,790

Notes:

(1) Amounts represent the book values of loans immediately after the restructurings.

(2) The majority of total foreign consist of corporate.

F-23

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Payment default is deemed to occur when the loan becomes three months past due or the obligor is downgraded to the category of substantially bankrupt or bankrupt. The following table presents payment defaults which occurred during the six months ended September 30, 2021 and 2022 with respect to the loans modified as TDRs within the previous twelve months:

	Recorded investment
	September 30, 2021		September 30, 2022
	(in millions of yen)
Domestic:
Corporate:
Large companies		1,148		91,049
Small and medium-sized companies		2,157		626
Retail:
Housing Loan		579		418
Others		515		722
Total domestic		4,399		92,815
Foreign:
Total foreign		14,125		—
Total		18,524		92,815

F-24

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Age analysis of past due loans

The table below presents an analysis of the age of the amortized cost basis in loans that are past due at March 31, 2022 and September 30, 2022:

	30-59 days past due		60-89 days past due		90 days or more past due		Total past due		Current		Total
	(in millions of yen)
March 31, 2022
Domestic:
Corporate:
Large companies		323		291		27,275		27,889		42,016,051		42,043,940
Small and medium-sized companies		693		641		10,370		11,704		3,145,216		3,156,920
Retail:
Housing Loan		15,181		8,326		16,548		40,055		7,741,465		7,781,520
Others		4,454		1,068		11,009		16,531		1,690,644		1,707,175
Sovereign		—		—		—		—		1,660,345		1,660,345
Banks and other financial institutions		—		—		—		—		681,757		681,757
Total domestic		20,651		10,326		65,202		96,179		56,935,478		57,031,657
Foreign:
Total foreign		—		—		28,816		28,816		33,230,110		33,258,926
Total		20,651		10,326		94,018		124,995		90,165,588		90,290,583
September 30, 2022
Domestic:
Corporate:
Large companies		972		—		33,164		34,136		42,889,937		42,924,073
Small and medium-sized companies		809		—		11,330		12,139		3,046,405		3,058,544
Retail:
Housing Loan		14,486		6,026		16,024		36,536		7,605,545		7,642,081
Others		4,582		1,030		11,130		16,742		1,611,053		1,627,795
Sovereign		—		—		—		—		1,815,509		1,815,509
Banks and other financial institutions		—		—		—		—		773,557		773,557
Total domestic		20,849		7,056		71,648		99,553		57,742,006		57,841,559
Foreign:
Total foreign		—		—		49,946		49,946		40,442,786		40,492,732
Total		20,849		7,056		121,594		149,499		98,184,792		98,334,291

Note: The majority of total foreign consist of corporate.

Net losses on sales of loans

Net losses on sales of loans were ¥1,674 million and ¥4,873 million for the six months ended September 30, 2021 and 2022, respectively. These net losses include unrealized gains and losses on loans held for sale, representing the adjustments to the lower of cost or fair value at the end of each reporting period. The gains and losses on sales of loans are recorded in Other noninterest income and expenses, respectively.

F-25

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

5. Allowance for credit losses on loans

Changes in Allowance for credit losses on loans by portfolio segment for the six months ended September 30, 2021 and 2022 are shown below:

	Domestic
	Corporate			Retail			Sovereign			Banks and other financial institutions			Foreign(3)			Total
	(in millions of yen)
Six months ended September 30, 2021
Balance at beginning of period		481,420			83,171			68			623			85,567			650,849
Provision (credit) for credit losses on loans		54,150			(376	)		13			(427	)		(5,155	)		48,205
Charge-offs (1)		(25,880	)		(2,446	)		—			—			(12,570	)		(40,896	)
Recoveries		5,312			916			—			—			263			6,491
Net charge-offs		(20,568	)		(1,530	)		—			—			(12,307	)		(34,405	)
Others (2)		—			—			—			—			579			579
Balance at end of period		515,002			81,265			81			196			68,684			665,228
Six months ended September 30, 2022
Balance at beginning of period		601,506			73,414			62			438			134,397			809,817
Provision (credit) for credit losses on loans		16,206			(1,078	)		(4	)		230			23,185			38,539
Charge-offs (1)		(146,204	)		(3,005	)		—			—			(14,403	)		(163,612	)
Recoveries		1,309			760			—			—			1,939			4,008
Net charge-offs		(144,895	)		(2,245	)		—			—			(12,464	)		(159,604	)
Others (2)		—			—			—			—			21,994			21,994
Balance at end of period		472,817			70,091			58			668			167,112			710,746

Notes:

(1) Charge-offs increased by ¥122,716 million from the six months ended September 30, 2021 to ¥163,612 million for the six months ended September 30, 2022 due mainly to a debt waiver to a domestic corporate borrower.

(2) Others includes primarily foreign exchange translation.

(3) The majority of total foreign consist of corporate.

F-26

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

6. Other assets and liabilities

The following table sets forth the details of other assets and liabilities at March 31, 2022 and September 30, 2022:

	March 31, 2022		September 30, 2022
	(in millions of yen)
Other assets:
Accounts receivable:
Receivables from brokers, dealers and customers for securities transactions		3,049,874		4,134,148
Other		557,842		438,670
Collateral pledged:
Collateral pledged for derivative transactions		1,549,483		2,119,911
Margins provided for futures contracts		466,531		189,133
Other		1,006,849		1,086,446
Prepaid pension cost		762,147		747,563
Right-of-use assets		570,171		552,233
Security deposits		91,766		86,650
Loans held for sale		156,639		279,321
Other		775,940		885,359
Total		8,987,242		10,519,434
Other liabilities:
Accounts payable:
Payables to brokers, dealers and customers for securities transactions		1,406,965		1,662,194
Other		494,538		461,188
Guaranteed trust principal (Note)		810,776		821,670
Lease liabilities		593,339		574,190
Collateral accepted:
Collateral accepted for derivative transactions		1,075,591		1,744,164
Margins accepted for futures contracts		327,883		131,007
Unearned income		113,181		109,425
Other		1,437,949		1,516,457
Total		6,260,222		7,020,295

Note: Guaranteed trust principal, included in All other liabilities in the disclosure about consolidated VIEs in the accompanying balance sheets, is a liability of certain consolidated trust arrangements that meet the definition of a VIE for which the MHFG Group provides guarantees for the repayment of principal. See Note 15 “Variable interest entities and securitizations” for further discussion of the guaranteed principal money trusts.

F-27

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

7. Preferred and common stock

Preferred stock

The composition of preferred stock at March 31, 2022 and September 30, 2022 is as follows:

Class of stock	March 31, 2022				September 30, 2022
	Authorized		Issued		Authorized		Issued
	(number of shares)
Class XIV preferred stock		90,000,000		—		90,000,000		—
Class XV preferred stock		90,000,000		—		90,000,000		—
Class XVI preferred stock		150,000,000		—		150,000,000		—

Common stock

The number of issued shares of common stock at March 31, 2022 and September 30, 2022 was 2,539,249,894. There was no increase or decrease during the six months ended September 30, 2022.

F-28

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

8. Accumulated other comprehensive income (loss), net of tax

Changes in each component of Accumulated other comprehensive income (loss), net of tax (“AOCI”) for the six months ended September 30, 2021 and 2022 are as follows:

	Six months ended September 30,
	2021			2022
	(in millions of yen)
AOCI, balance at beginning of period		318,114			440,112
Net unrealized gains (losses) on available-for-sale securities:
Balance at beginning of period		(8,173	)		(25,046	)
Unrealized holding gains (losses) during period		6,034			(4,329	)
Less: reclassification adjustments for losses (gains) included in net income		(525	)		(4,741	)
Change during period		5,509			(9,070	)
Balance at end of period		(2,664	)		(34,116	)
Foreign currency translation adjustments:
Balance at beginning of period		(86,873	)		94,104
Foreign currency translation adjustments during period		52,231			269,154
Less: reclassification adjustments for losses (gains) included in net income		—			—
Change during period		52,231			269,154
Balance at end of period		(34,642	)		363,258
Defined benefit plan adjustments:
Balance at beginning of period		397,153			355,355
Unrealized gains (losses) during period		(5,107	)		4,390
Less: reclassification adjustments for losses (gains) included in net income		(9,187	)		(9,183	)
Change during period		(14,294	)		(4,793	)
Balance at end of period		382,859			350,562
Own credit risk adjustments:
Balance at beginning of period		16,007			15,699
Unrealized gains (losses) during period		(6,218	)		2,998
Less: reclassification adjustments for losses (gains) included in net income		443			434
Change during period		(5,775	)		3,432
Balance at end of period		10,232			19,131
Total other comprehensive income (loss), net of tax attributable to MHFG shareholders		37,671			258,723
AOCI, balance at end of period		355,785			698,835

F-29

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following table shows the amounts reclassified out of AOCI into net income during the six months ended September 30, 2022:

	Six months ended September 30, 2022
	Before tax (1)			Tax effect (2)			Net of tax before allocation to noncontrolling interests			Net of tax attributable to noncontrolling interests (2)		Net of tax attributable to MHFG shareholders
	(in millions of yen)
Amounts reclassified out of AOCI into net income:															Affected line items in the consolidated statements of income:
Net unrealized gains (losses) on available-for- sale securities		6,759			(2,018	)		4,741			—		4,741		Investment gains (losses)-net
Defined benefit plan adjustments		13,114			(3,940	)		9,174			9		9,183		Salaries and employee benefits
Own credit risk adjustments		(626	)		192			(434	)		—		(434	)	Other noninterest income (expenses)
Total		19,247			(5,766	)		13,481			9		13,490

Notes:

(1) The financial statement line item in which the amounts in the before tax column are reported in the consolidated statements of income is listed to the right of the table.

(2) The financial statement line items in which the amounts in the tax effect and the net of tax attributable to noncontrolling interest columns are reported in the consolidated statements of income are Income tax expense (benefit) and Net income (loss), respectively.

9. Regulatory matters

Regulatory capital requirements

MHFG, MHBK, and MHTB are subject to regulatory capital requirements supervised by the Financial Services Agency in accordance with the provisions of Japan’s Banking Act and related regulations. Certain foreign banking subsidiaries are subject to regulation and control by local supervisory authorities, including central banks. Failure to meet minimum capital requirements may initiate certain mandatory actions by regulators that, if undertaken, could have a direct material effect on the MHFG Group’s consolidated financial condition and results of operations.

F-30

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Capital adequacy ratios and leverage ratios of MHFG, MHBK, and MHTB as of March 31, 2022 and September 30, 2022 calculated in accordance with Japanese GAAP and the guidelines established by the Financial Services Agency are set forth in the following table:

	March 31, 2022				September 30, 2022
	Amount		Ratio		Amount		Ratio
	(in billions of yen, except percentages)
Consolidated:
MHFG:
Common Equity Tier 1 capital:
Required (1)		5,184		8.01		5,714		8.01
Actual		8,067		12.46		8,097		11.35
Tier 1 capital:
Required (1)		6,155		9.51		6,784		9.51
Actual		9,713		15.00		9,733		13.64
Total risk-based capital:
Required (1)		7,450		11.51		8,210		11.51
Actual		11,351		17.53		11,216		15.72
Leverage Ratio (2):
Required		6,389		3.00		6,925		3.00
Actual		9,713		4.56		9,733		4.21
MHBK:
Common Equity Tier 1 capital:
Required		2,683		4.50		2,981		4.50
Actual		6,968		11.68		7,082		10.68
Tier 1 capital:
Required		3,578		6.00		3,975		6.00
Actual		8,604		14.42		8,714		13.15
Total risk-based capital:
Required		4,771		8.00		5,300		8.00
Actual		10,150		17.02		10,110		15.26
Leverage Ratio (2):
Required		5,971		3.00		6,509		3.00
Actual		8,604		4.32		8,714		4.01
MHTB:
Common Equity Tier 1 capital:
Required		79		4.50		76		4.50
Actual		442		25.18		453		26.62
Tier 1 capital:
Required		105		6.00		102		6.00
Actual		442		25.18		453		26.62
Total risk-based capital:
Required		140		8.00		136		8.00
Actual		442		25.18		453		26.62
Leverage Ratio (2):
Required		130		3.00		128		3.00
Actual		442		10.20		453		10.56

F-31

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

	March 31, 2022				September 30, 2022
	Amount		Ratio		Amount		Ratio
	(in billions of yen, except percentages)
Non-consolidated:
MHBK:
Common Equity Tier 1 capital:
Required		2,528		4.50		2,783		4.50
Actual		6,293		11.20		6,066		9.80
Tier 1 capital:
Required		3,370		6.00		3,710		6.00
Actual		7,919		14.09		7,689		12.43
Total risk-based capital:
Required		4,494		8.00		4,947		8.00
Actual		9,483		16.88		9,097		14.70
Leverage Ratio (2):
Required		5,570		3.00		6,048		3.00
Actual		7,919		4.26		7,689		3.81
MHTB:
Common Equity Tier 1 capital:
Required		78		4.50		76		4.50
Actual		425		24.40		436		25.68
Tier 1 capital:
Required		104		6.00		101		6.00
Actual		425		24.40		436		25.68
Total risk-based capital:
Required		139		8.00		135		8.00
Actual		425		24.40		436		25.69
Leverage Ratio (2):
Required		126		3.00		124		3.00
Actual		425		10.09		436		10.47

Notes:

(1) The required ratios disclosed above, at March 31, 2022 and September 30, 2022, include the capital conservation buffer of 2.5%, the countercyclical capital buffer of 0.01%, and the additional loss absorbency requirements for global systemically important banks (“G-SIBs”) and domestic systemically important banks (“D-SIBs”) of 1.0%, which are all in addition to the regulatory minima. The respective required amounts are determined by applying the ratios to the sum of the risk weighted assets and certain other risk amounts.

(2) The required and actual amounts disclosed above at March 31, 2022 and September 30, 2022 exclude amounts of deposits to the Bank of Japan.

MHFG’s securities subsidiary in Japan is also subject to the capital adequacy requirement under Japan’s Financial Instruments and Exchange Act. Failure to maintain a minimum capital ratio will trigger mandatory regulatory actions.

Management believes, as of each latest balance sheet date, that MHFG, MHBK, MHTB, and their securities subsidiary in Japan and foreign banking subsidiaries were in compliance with all capital adequacy requirements to which they were subject.

F-32

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Business improvement orders

MHFG and MHBK received business improvement orders dated November 26, 2021 from the Financial Services Agency of Japan pursuant to Clause 1 of Article 52-33 and Clause 1 of Article 26 of the Banking Act of Japan, in regard to the series of IT system failures that have occurred from February to September 2021. In response to this, MHFG and MHBK submitted the business improvement plans to the Financial Services Agency of Japan. MHFG and MHBK have been implementing measures to prevent further incidents based on the business improvement plans and building up crisis response capability in a multidimensional manner. See Note 14 “Commitments and contingencies” for further information on the impact that these orders have on the consolidated financial statements.

10. Earnings per common share

Basic earnings per common share are computed by dividing net income (loss) attributable to MHFG common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common share reflect all dilutive potential common shares such as stock options and the common shares of MHFG under the stock compensation programs.

The following table sets forth the computation of basic and diluted earnings per common share for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,
	2021		2022
	(in millions of yen)
Net income (loss):
Net income (loss) attributable to MHFG common shareholders		312,657		(378,877	)
Effect of dilutive securities		—		—
Net income (loss) attributable to common shareholders after assumed conversions		312,657		(378,877	)
	Six months ended September 30,
	2021		2022
	(thousands of shares)
Shares:
Weighted average common shares outstanding		2,536,902		2,536,315
Effect of dilutive securities:
Stock options and the common shares of MHFG under the stock compensation programs(Note)		119		—
Weighted average common shares after assumed conversions		2,537,021		2,536,315

F-33

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

	Six months ended September 30,
	2021		2022
	(in yen)
Earnings per common share:
Basic net income (loss) per common share		123.24		(149.38	)
Diluted net income (loss) per common share(Note)		123.24		(149.38	)

Note: For the six months ended September 30, 2022, the performance-based plan under the stock compensation programs could potentially dilute earnings per common share but were not included in the computation of diluted earnings per common share due to their antidilutive effects. In addition, for the six months ended September 30, 2022, the computation of diluted earnings per common share did not assume exercise of stock options, as the effect of such exercise would be antidilutive due to net loss.  

11. Income taxes

The following table presents the components of Income tax expense (benefit) for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Current tax expense		67,822			67,244
Deferred tax expense (benefit)		(28,200	)		(239,149	)
Total income tax expense (benefit)		39,622			(171,905	)

The preceding table does not reflect the tax effects of items recorded directly in Equity for the six months ended September 30, 2021 and 2022. The detailed amounts recorded directly in Equity are as follows:

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Net unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses)		926			(3,413	)
Less: reclassification adjustments		(213	)		(2,018	)
Total		713			(5,431	)
Defined benefit plan adjustments:
Unrealized gains (losses)		(2,144	)		1,381
Less: reclassification adjustments		(3,875	)		(3,940	)
Total		(6,019	)		(2,559	)
Own credit risk adjustments:
Unrealized gains (losses)		(2,638	)		1,368
Less: reclassification adjustments		219			192
Total		(2,419	)		1,560
Total tax effect before allocation to noncontrolling interests		(7,725	)		(6,430	)

F-34

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The statutory tax rates were both 30.62% as of September 30, 2021 and 2022. The effective tax rates, 10.34% and 30.55% for the six months ended September 30, 2021 and 2022, respectively, differed from the statutory tax rates. The significant difference of the tax rate for the six months ended September 30, 2021 resulted mainly from the reversal of an outside basis difference related to the share buyback conducted by MHSC in response to improving the capital position and aligning to the MHFG Group’s capital policy, and was partially offset by an increase in the valuation allowance. The difference of the tax rates for the six months ended September 30, 2022 was immaterial.

At September 30, 2022, the MHFG Group had net operating loss carryforwards totaling ¥571 billion.

The total amount of unrecognized tax benefits was ¥6,567 million at September 30, 2022, which would, if recognized, affect the Group’s effective tax rate. The Group classifies interest and penalties accrued relating to unrecognized tax benefits as Income tax expense.

An immaterial portion of unrecognized tax benefits at March 31, 2022 was resolved in the six months period ended September 30, 2022. The amount of additional unrecognized tax benefits for the period was also immaterial. The MHFG Group does not anticipate that increases or decreases of unrecognized tax benefits within the next twelve months would have a material effect on its consolidated results of operations or financial condition.

12. Pension and other employee benefit plans

The following table summarizes the components of net periodic benefit cost of the severance indemnities and pension plans of the MHFG Group for the six months ended September 30, 2021 and 2022:

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Service cost-benefits earned during the period		16,365			14,559
Interest costs on projected benefit obligations		2,700			3,626
Expected return on plan assets		(18,478	)		(18,050	)
Amortization of prior service cost (benefits)		(2,410	)		(2,410	)
Amortization of net actuarial loss (gain)		(10,263	)		(9,741	)
Special termination benefits		4,154			3,831
Net periodic benefit cost		(7,932	)		(8,185	)

13. Derivative financial instruments

The MHFG Group enters into derivative financial instruments in response to the diverse needs of customers, to manage the risk related to the assets and liabilities of the Group, as part of its asset and liability management, and for proprietary trading purposes. The Group is exposed primarily to market risk associated with interest rate, commodity, foreign currency, and equity products. Market risk arises from changes in market prices or indices, interest rates and foreign exchange rates that may result in an adverse change in the market value of the financial instrument or an increase in its funding costs. Exposure to market risk is managed by imposing position limits and monitoring procedures and by initiating hedging transactions. In addition to market risk, the Group is exposed to credit risk associated with counterparty default or nonperformance in respect of transactions.

F-35

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Counterparty credit risk arises when a counterparty fails to perform according to the terms and conditions of the contract and the value of the underlying collateral held, if applicable, is not sufficient to recover resulting losses. The exposure to counterparty credit risk is measured by the fair value of all derivatives and its potential exposure at the balance sheet dates. The exposure to counterparty credit risk is managed by entering into legally enforceable master netting agreements to mitigate the overall counterparty credit risk, requiring underlying collateral and guarantees based on an individual credit analysis of each obligor and evaluating the credit features of each instrument. In addition, credit approvals, limits and monitoring procedures are also imposed.

Notional and fair value amounts of derivative instruments

The following table summarizes the notional and fair value amounts of derivative instruments outstanding as of March 31, 2022 and September 30, 2022. The fair values of derivatives are presented on a gross basis; derivative receivables and payables are not offset. In addition, they are not offset against the amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral under master netting agreements in the consolidated balance sheets, or the table below.

			Fair value
			Derivative receivables (2)				Derivative payables (2)
March 31, 2022	Notional amount (1)		Designated as hedges		Not designated as hedges		Designated as hedges		Not designated as hedges
	(in billions of yen)
Interest rate contracts		1,395,950		—		4,624		—		4,716
Foreign exchange contracts		217,462		—		4,436		—		4,472
Equity-related contracts		9,887		—		426		—		345
Credit-related contracts		11,857		—		118		—		121
Other contracts		681		—		119		—		116
Total		1,635,837		—		9,723		—		9,770

			Fair value
			Derivative receivables (2)				Derivative payables (2)
September 30, 2022	Notional amount (1)		Designated as hedges		Not designated as hedges		Designated as hedges		Not designated as hedges
	(in billions of yen)
Interest rate contracts		1,627,102		—		8,916		—		9,229
Foreign exchange contracts		260,472		—		8,571		—		8,665
Equity-related contracts		7,735		—		285		—		214
Credit-related contracts		21,379		—		166		—		94
Other contracts		1,116		—		92		—		92
Total		1,917,804		—		18,030		—		18,294

Notes:

(1) Notional amount includes the sum of gross long and gross short third-party contracts.

(2) Derivative receivables and payables are recorded in Trading account assets and Trading account liabilities, respectively.

The MHFG Group provided and/or accepted cash collateral for derivative transactions under master netting agreements. The cash collateral, which was not offset against derivative positions, was included in Other assets

F-36

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

and Other liabilities, respectively, of which the amounts were ¥1,549 billion and ¥1,076 billion at March 31, 2022, and ¥2,120 billion and ¥1,744 billion at September 30, 2022, respectively.

Hedging activities

In order to qualify for hedge accounting, a derivative must be considered highly effective at reducing the risk associated with the exposure being hedged. Each derivative must be designated as a hedge, with documentation of the risk management objective and strategy, including identification of the hedging instrument, the hedged item and the risk exposure, and how effectiveness is to be assessed prospectively and retrospectively. The extent to which a hedging instrument is effective at achieving offsetting changes in fair value or cash flows must be assessed at least quarterly. The MHFG Group’s hedging activities include net investment hedges.

Net investment hedges

The MHFG Group uses forward foreign exchange contracts and foreign currency-denominated debt instruments to protect the value of net investments in non-Japanese subsidiaries from foreign currency exposure. Under net investment hedges, both derivatives and nonderivative financial instruments qualify as hedging instruments. The foreign currency-denominated debt instruments qualifying as hedging instruments include deposits and long-term debt, of which the carrying amounts of the portion designated as net investment hedges are included within the respective items in the consolidated balance sheets as well as relevant accompanying notes. For net investment hedges, the entire change in the fair value of a hedging derivative instrument or nonderivative hedging financial instrument is recorded in Foreign currency translation adjustments within Accumulated other comprehensive income (loss), provided that the hedging instrument is designated as a hedge of the net investment. The gains and losses recorded in other comprehensive income (loss) (“OCI”) related to net investment hedges were immaterial.

Derivative instruments not designated or qualifying as hedges

The MHFG Group enters into the following derivative transactions that do not qualify for hedge accounting with a view to implementing risk management strategies: (1) interest-rate swap transactions for the purpose of economically managing the interest-rate risks in deposits, loans, etc., (2) currency swap transactions for the purpose of economically managing the foreign exchange risk of these assets, (3) equity-related derivatives for the purpose of economically managing the risk of stock price fluctuation involved in holding equity products, and (4) credit derivatives for the purpose of economically managing the credit risk in loans, residential mortgage-backed securities (“RMBS”), commercial mortgage-backed securities (“CMBS”), collateralized loan obligations (“CLO”) and other similar assets. Such derivatives are accounted for as trading positions. The changes in fair value of these instruments are primarily recorded in Trading account gains (losses)—net, even though they are used to mitigate or transform the risk of exposures arising from banking activities. The net gains (losses) resulting from changes in the fair value of certain credit derivatives where the Group purchases protection to mitigate its credit risk exposure, related to its corporate loan portfolio, is recorded in Other noninterest income (expenses).

F-37

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following table summarizes gains and losses on derivatives not designated or qualifying as hedges during the six months ended September 30, 2021 and 2022:

	Gains (losses) recorded in income for six months ended September 30,
	2021			2022
	(in millions of yen)
Interest rate contracts		20,602			(179,783	)
Foreign exchange contracts		7,407			251,060
Equity-related contracts		33,504			482,233
Credit-related contracts (Note)		(15,599	)		42,152
Other contracts		6,875			61,001
Total		52,789			656,663

Note: Amounts include the net gains (losses) of ¥(395) million and ¥172 million on the credit derivatives economically managing the credit risk of loans during the six months ended September 30, 2021 and 2022, respectively.

Credit derivatives

A credit derivative is a bilateral contract between a seller and a buyer of protection against the credit risk of a particular entity. Credit derivatives generally require that the seller of credit protection make payments to the buyer upon the occurrence of predefined credit events, which include bankruptcy, dissolution or insolvency of the referenced entity. The MHFG Group either purchases or writes protection on either a single name or a portfolio of reference credits. The Group enters into credit derivatives to help mitigate credit risk in its corporate loan portfolio and other cash positions, to take proprietary trading positions, and to facilitate client transactions.

The notional amount of credit derivatives represents the maximum potential amount of future payments the seller could be required to make. If the predefined credit event occurs, the seller will generally have a right to collect on the underlying reference credit and the related cash flows, while being liable for the full notional amount of credit protection to the buyer. The Group manages credit risk associated with written protection by purchasing protection with identical or similar underlying reference credits, which substantially offsets its exposure. Thus, the notional amount is not necessarily a reliable indicator of the Group’s actual loss exposure.

The following table summarizes the notional and fair value amounts of credit derivatives at March 31, 2022 and September 30, 2022:

	March 31, 2022					September 30, 2022
	Notional amount		Fair value			Notional amount		Fair value
	(in billions of yen)
Credit protection written:
Investment grade		3,045		38			4,370		—
Non-investment grade		2,122		54			5,496		(41	)
Total		5,167		92			9,866		(41	)
Credit protection purchased		6,690		(95	)		11,513		113

F-38

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Note: The rating scale is based upon either the external ratings or the internal ratings of the underlying reference credit. The lowest investment grade rating is considered to be BBB-, while anything below or unrated is considered to be non-investment grade. Non-investment grade credit derivatives primarily consist of unrated credit default swap indices such as CDX and iTraxx.

The following table shows the maximum potential amount of future payments for credit protection written by expiration period at March 31, 2022 and September 30, 2022:

	Maximum payout/Notional amount
	March 31, 2022		September 30, 2022
	(in billions of yen)
One year or less		245		242
After one year through five years		4,785		9,239
After five years		137		385
Total		5,167		9,866

Note: The maximum potential amount of future payments is the aggregate notional amount of the credit derivatives where the Group wrote the credit protection, and it has not been reduced by the effect of any amounts that the Group may possibly collect on the underlying assets and the related cash flows, nor netted against that of credit protection purchased.

Credit-related contingent features

Certain of the MHFG Group’s derivative instruments contain provisions that require the Group’s debt to maintain an investment grade credit rating from the major credit rating agencies. If the Group’s debt credit rating were to fall below investment grade, the counterparties to the derivative instruments could request immediate payment or demand immediate and ongoing full overnight collateralization on derivative instruments which are in net liability positions for the Group.

The following table shows the quantitative information about derivative instruments with credit-risk-related contingent features at March 31, 2022 and September 30, 2022:

	March 31, 2022		September 30, 2022
	(in billions of yen)
Aggregate fair value of derivative instruments with credit-risk-related contingent features in net liability positions		1,149		1,866
Collateral provided to counterparties in the normal course of business		1,164		1,743
Amount required to be posted as collateral or settled immediately if credit-risk-related contingent features were triggered		—		123

Note: There was no amount that the Group would be required to post as collateral or settle immediately on March 31, 2022.

F-39

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

14. Commitments and contingencies

Obligations under guarantees

The MHFG Group provides guarantees or indemnifications to counterparties to enhance their credit standing and enable them to complete a variety of business transactions. A guarantee represents an obligation to make payments to third parties if the counterparty fails to fulfill its obligation under a borrowing arrangement or other contractual obligation.

The Group records all guarantees and similar obligations subject to ASC 460, “Guarantees” (“ASC 460”) at fair value in the consolidated balance sheets at the inception of the guarantee.

The table below summarizes the maximum potential amount of future payments by type of guarantee at March 31, 2022 and September 30, 2022. The maximum potential amount of future payments disclosed below represents the contractual amounts that could be required to be repaid in the event of the guarantees being executed, without consideration of possible recoveries under recourse provisions or from collateral held. With respect to written options included in derivative financial instruments in the table below, in theory, the MHFG Group is exposed to unlimited losses; therefore, the table shows the notional amounts of the contracts as a substitute for the maximum exposure.

	March 31,          2022		September 30,              2022
	(in billions of yen)
Performance guarantees		3,254		3,612
Guarantees on loans		419		409
Guarantees on securities		75		89
Other guarantees		2,899		3,683
Guarantees for the repayment of trust principal		22		19
Liabilities of trust accounts		478		529
Derivative financial instruments		36,484		44,900

The table below presents the maximum potential amount of future payments of performance guarantees, guarantees on loans, guarantees on securities and other guarantees classified based on internal ratings at March 31, 2022 and September 30, 2022:

	March 31,          2022		September 30,              2022
	(in billions of yen)
Investment grade		5,336		6,228
Non-investment grade		1,311		1,565
Total		6,647		7,793

Note: Investment grade in the internal rating scale generally corresponds to BBB- or above in the external rating scale.

Other off-balance-sheet instruments

In addition to guarantees, the MHFG Group issues other off-balance-sheet instruments to its customers, such as lending-related commitments and commercial letters of credit. Under the terms of these arrangements, the MHFG Group is required to extend credit or make certain payments upon the customers’ requests.

F-40

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The table below summarizes the contractual amounts with regard to these undrawn commitments at March 31, 2022 and September 30, 2022:

	March 31,          2022		September 30,              2022
	(in billions of yen)
Commitments to extend credit (Note)		92,203		99,960
Commercial letters of credit		1,422		1,601
Total		93,625		101,561

Note: Commitments to extend credit include commitments to invest in securities.

Legal proceedings and investigations

The MHFG Group is involved in normal collection proceedings initiated by the Group, other legal proceedings and investigations in the ordinary course of business. In accordance with ASC 450, “Contingencies” (“ASC 450”), the Group recognizes a liability for loss contingencies arising from such proceedings and investigations when a loss is probable and the loss amount or the range of the loss can be reasonably estimated. However, if a loss is reasonably possible but the range of loss is not probable and reasonably estimable, the Group does not recognize a liability but discloses the detail of such proceedings and investigations. Based on the information available as of the date of the consolidated financial statements, the Group believes that the outcome of the collection, legal proceedings and investigations will not have a significant adverse effect on the consolidated financial statements.

15. Variable interest entities and securitizations

Variable interest entities

In the normal course of business, the MHFG Group is involved with VIEs primarily through the following types of transactions: asset-backed commercial paper/loan programs, asset-backed securitizations, investments in securitization products, investment funds, trust arrangements, structured finance, and funding vehicles. The Group consolidates certain of these VIEs, where the Group is deemed to be the primary beneficiary because it has both (1) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (2) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The MHFG Group reassesses whether it is the primary beneficiary on an ongoing basis as long as the Group has any continuing involvement with the VIE. There are also other VIEs, where the Group has determined that it is not the primary beneficiary but has significant variable interests. In evaluating the significance of the variable interests, the Group takes into consideration the extent of its involvement with each VIE, such as the seniority of its investments, the share of its holding in each tranche and the variability it expects to absorb, as well as other relevant facts and circumstances. The likelihood of loss is not necessarily relevant to the determination of significance, and therefore, “significant” does not imply that there is high likelihood of loss. The maximum exposure to loss that is discussed in this section refers to the maximum loss that the Group could possibly be required to record in its consolidated statements of income as a result of its involvement with the VIEs. This represents exposures associated with both on-balance-sheet assets and off-balance-sheet liabilities related to the VIEs. Further, this maximum potential loss is disclosed regardless of the probability of such losses and, therefore, it is not indicative of the ongoing exposure which is managed within the Group’s risk management framework.

F-41

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The table below shows the consolidated assets of the Group’s consolidated VIEs as well as total assets and maximum exposure to loss for its significant unconsolidated VIEs, in which the Group has determined that its maximum exposure to loss is greater than specific thresholds or meets certain other criteria as of March 31, 2022 and September 30, 2022:

	Consolidated VIEs		Significant unconsolidated VIEs
March 31, 2022	Consolidated assets		Total assets		Maximum exposure to loss
	(in billions of yen)
Asset-backed commercial paper/loan programs		2,709		—		—
Asset-backed securitizations		1,363		190		90
Investments in securitization products		388		—		—
Investment funds		1,816		3,392		719
Trust arrangements and other		5,299		—		—
Total		11,575		3,582		809
	Consolidated VIEs		Significant unconsolidated VIEs
September 30, 2022	Consolidated assets		Total assets		Maximum exposure to loss
	(in billions of yen)
Asset-backed commercial paper/loan programs		2,991		—		—
Asset-backed securitizations		1,653		199		121
Investments in securitization products		387		—		—
Investment funds		2,060		2,952		688
Trust arrangements and other		5,084		—		—
Total		12,175		3,151		809

As of March 31, 2022 and September 30, 2022, the noncontrolling interests in consolidated VIEs amounted to ¥388 billion and ¥641 billion, respectively, and are included in the Group’s equity-classified noncontrolling interests.

The Group has not provided financial or other support to consolidated or unconsolidated VIEs that the Group was not previously contractually required to provide.

The tables below present the carrying amounts and classification of assets and liabilities on the MHFG Group’s balance sheets that relate to its variable interests in significant unconsolidated VIEs, as of March 31, 2022 and September 30, 2022:

Assets on the MHFG Group’s balance sheets related to unconsolidated VIEs:	March 31, 2022		September 30, 2022
	(in billions of yen)
Trading account assets		143		152
Investments		430		373
Loans		92		115
Total		665		640

F-42

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Liabilities on the MHFG Group’s balance sheets and maximum exposure to loss related to unconsolidated VIEs:	March 31, 2022		September 30, 2022
	(in billions of yen)
Payables under securities lending transactions		54		59
Trading account liabilities		2		2
Total		56		61
Maximum exposure to loss (Note)		809		809

Note: This represents the maximum amount the Group could possibly be required to record in its consolidated statements of income associated with on-balance-sheet exposures and off-balance-sheet liabilities such as undrawn commitments.

In the table above the nature of the Group’s variable interest can take different forms, as described further in the notes below. Additionally the Group’s exposure to the obligations of VIEs is generally limited to its interest in these entities. In certain instances the Group provides undrawn commitments to the VIEs.

The Group’s maximum exposure to loss presented in the table above does not include the benefit of offsetting financial instruments that are held to mitigate the risks associated with these variable interests. Furthermore, the Group’s maximum exposure to loss presented in the table above is not reduced by the amount of collateral held as part of the transaction with the VIE or any party to the VIE directly against a specific exposure to loss.

Asset-backed commercial paper/loan programs

The MHFG Group manages several asset-backed commercial paper/loan programs that provide its clients with off-balance-sheet and/or cost-effective financing. The VIEs used in the programs purchase financial assets, primarily receivables, from clients participating in the programs and provide liquidity through the issuance of commercial paper or borrowings from the MHFG Group backed by the financial assets. While customers normally continue to service the transferred receivables, the MHFG Group underwrites, distributes, and makes a market in commercial paper issued by the conduits. The MHFG Group typically provides program-wide liquidity and credit support facilities and, in some instances, financing to the VIEs. The MHFG Group has the power to determine which assets will be held by the VIEs and has an obligation to monitor these assets. The Group is also responsible for liability management. In addition, through the liquidity and credit support facilities provided to the VIEs, the Group has the obligation to absorb losses that could potentially be significant to the VIEs. Therefore, the Group consolidates such VIEs.

Asset-backed securitizations

The MHFG Group acts as an arranger of various types of structured finance schemes to meet its clients’ needs for off-balance-sheet financing. In substantially all of these structured financing transactions, the transfer of the financial asset by the client is structured to be bankruptcy remote by use of a bankruptcy remote entity, which is deemed to be a VIE because its equity holder does not have decision making rights. The MHFG Group receives fees for structuring and/or distributing the securities sold to investors. In some cases, the MHFG Group itself purchases the securities issued by the entities and/or provides loans to the VIEs.

In addition, the MHFG Group establishes several single-issue and multi-issue special purpose entities that issue collateralized debt obligations (“CDO”) or CLO, synthetic CDO/CLO or other repackaged instruments to meet clients’ and investors’ financial needs. The MHFG Group also arranges securitization transactions including

F-43

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

CMBS, RMBS and others. In these transactions, the MHFG Group acts as an underwriter, placement agent, asset manager, derivatives counterparty, and/or investor in debt and equity instruments.

In these cases, the MHFG Group considers that these variable interests are not significant as the MHFG Group does not have material balance sheet or off-balance exposure at risk related to these variable interests. However, when the MHFG Group has invested in securities issued by the VIEs and/or provides loans to the VIEs and its investment is most part of shares, such variable interests are deemed to be “significant.” In certain VIEs, where the MHFG Group provides liquidity and credit support facilities, writes credit protection or invests in debt or equity instruments in its role as an arranger, servicer, administrator or asset manager, etc., the Group has the power to determine which assets will be held by the VIEs or to manage and monitor these assets. In addition, through the variable interests above, the Group has the obligation to absorb losses and the right to receive benefits that could potentially be significant to the VIEs. Therefore, the Group consolidates such VIEs.

The MHFG Group manages Tender Option Bond (“TOB”) programs which are associated with trusts that hold highly-rated, fixed-rate and tax-exempt municipal bonds. The trust finances the purchase of their municipal bonds by issuing two types of certificates: (1) short-term puttable and floating-rate certificates (“floaters”), typically purchased by money market funds and (2) certificates that earn all excess cash flow received by the trust after floaters and fees are paid (“residuals”), purchased by the transferor of the municipal bond to the trust as a sponsor. The Group is engaged in two types of TOB trusts: customer TOB trusts and non-customer TOB trusts. Customer TOB trusts are those for which the residuals are purchased by customers of the Group, whereas the residuals issued by non-customer TOB trusts are purchased by the Group. Both types of TOB trusts are deemed to be VIEs because its equity holder does not have decision making rights. The MHFG Group considers that it is a “significant” variable interest when the Group has the residuals as a sponsor and/or provides liquidity and credit support facilities. The Group often commits to provide liquidity to customer TOB trusts and the residual holders of customer TOB trusts are obligated to reimburse the Group for any payment the Group makes under those liquidity and credit support facilities. In non-customer TOB trusts, where the MHFG Group holds the residuals as a sponsor, the Group has the power to determine which assets will be held by the VIEs or to manage and monitor these assets. In addition, through the variable interests above, the Group has the obligation to absorb losses and the right to receive benefits that could potentially be significant to the VIEs. Therefore, the Group consolidates such VIEs. Customer TOB trusts are not consolidated in the financial statements of the Group, as the residuals are held by customers and the Group does not have power to determine which assets will be held by the VIEs or to manage and monitor these assets.

Investments in securitization products

The MHFG Group invests in, among other things, various types of CDO/CLO, synthetic CDO/CLO and repackaged instruments, CMBS and RMBS arranged by third parties for the purpose of generating current income or capital appreciation, which all utilize entities that are deemed to be VIEs. By design, such investments were investment grade at issuance and held by a diverse group of investors. The potential loss amounts of the securities and the loans are generally limited to the amounts invested because the Group has no contractual involvement in such VIEs beyond its investments. Since the Group is involved in these VIEs only as an investor, the Group does not ordinarily have the power to direct the VIEs’ activities that most significantly impact the VIEs’ economic performance. Similar to the criteria noted in the asset-backed securitization section, the Group views this investment activity to be “significant” when it has a large investment share and/or provides loans to the VIEs. The Group consolidates VIEs, where the transactions are tailored by the third-party arrangers to meet the Group’s needs as a main investor, who is ultimately deemed to have the power to determine which assets are to be held by the VIEs. The Group also invests in certain beneficial interests issued by VIEs which hold real

F-44

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

estate that the Group utilizes. In addition to these variable interests, when the Group has the power including the sole unilateral ability to liquidate the VIEs, the Group consolidates such VIEs.

Investment funds

The MHFG Group invests in various investment funds, including securities investment trusts, which collectively invest in equity and debt securities that include listed Japanese securities and investment grade bonds. Investment advisory companies or fund management companies, including the Group’s subsidiaries and affiliates, administer and make investment decisions about such investment funds. The Group considers that it is a “significant” variable interest when the Group’s investment share is greater than threshold. The Group consolidates certain investment funds where it is deemed to be the primary beneficiary.

The Group determines whether it is the primary beneficiary by evaluating whether it has both (1) the power to make investment decisions about the investment funds and (2) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the investment funds. The Group consolidates certain investment funds where it is deemed to be the primary beneficiary.

Trust arrangements

The MHFG Group offers a variety of asset management and administration services under trust arrangements including security investment trusts, pension trusts and trusts used in the securitization of assets originated by and transferred to third parties. The Group receives trust fees for providing services as an agent or fiduciary on behalf of beneficiaries. In these cases, the MHFG Group considers that these variable interests are not significant except for its specific involvement as noted below;

With respect to guaranteed principal money trust products, the MHFG Group assumes certain risks by providing guarantees for the repayment of principal as required by the trust agreements or relevant Japanese legislation. The MHFG Group manages entrusted funds primarily through the origination of high-quality loans and other credit-related products, investing in investment grade marketable securities such as Japanese government bonds and placing cash with the MHFG Group’s subsidiary trust banks. The Group has the power to determine which assets will be held by the VIEs or to manage these assets. In addition, through the principal guarantee agreements, the Group has the obligation to absorb losses that could potentially be significant to the VIEs. Therefore, the Group consolidates such VIEs. However, the MHFG Group does not consolidate certain guaranteed principal money trusts, which invest all the entrusted funds in the MHFG Group itself, as the Group has determined that it has no variable interests. See Note 14 “Commitments and contingencies” for the balances of guaranteed trust principal that are not consolidated at March 31, 2022 and September 30, 2022.

With respect to non-guaranteed trust arrangements, the MHFG Group manages and administers assets on behalf of its customers (trust beneficiaries) in the capacity of a trustee and fiduciary. For substantially all non-guaranteed trust arrangements, the Group generally does not have the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance or has neither the obligation to absorb losses nor the right to receive benefits that could potentially be significant to the VIEs. Therefore, such trust accounts are not included in the consolidated financial statements of the MHFG Group.

The MHFG Group has established a trust in August 2020, which holds the Group’s housing loans and in turn issues beneficiary interests to the Group, as a result from Special Funds-Supplying Operations implemented by the Bank of Japan to facilitate financing in response to COVID-19. The Group pledges the beneficiary interests

F-45

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

as a collateral for borrowing from the Bank of Japan. In its role as a servicer, the Group has power to direct the entity’s activities that most significantly impact the entity’s economic performance by managing mortgage loans owned by a trust. The Group considers that it is a “significant” variable interest since the Group can determine which assets will be held by the VIE. In addition, through the beneficiary interest, the Group has the obligation to absorb losses and the right to receive benefits that could potentially be significant to the VIE. Therefore, the Group consolidates the VIE.

Special purpose entities created for structured finance

The MHFG Group is involved in real estate, commercial aircraft and other vessel and machinery and equipment financing to VIEs and financing in securitized receivable. As the Group typically only provides senior financing with credit enhanced by subordinated interests and may sometimes act as an interest rate swap counterparty, the Group has determined that it does not have the power to direct the activities of the VIEs that most significantly impact the VIEs’ economic performance, or it does not have significant variable interests. Therefore, the Group does not consolidate such VIEs.

Funding Vehicles

The MHFG Group has established several wholly-owned off-shore vehicles which issue securities, typically preferred stock that is fully guaranteed by the MHFG Group, to investors unrelated to the MHFG Group to fund purchases of debt instruments issued by the MHFG Group. These entities are considered VIEs because they lack sufficient equity to finance their activities; however, the MHFG Group’s investment in the vehicles’ equity is not a variable interest because the investment is not considered to be at risk as the entire amount raised by the vehicles was used to purchase debt instruments issued by the MHFG Group. Because the MHFG Group does not have variable interests in these vehicles, the MHFG Group does not consolidate these entities. Debt instruments issued by the MHFG Group, which are included in Long-term debt, were ¥367 billion and ¥217 billion at March 31, 2022 and September 30, 2022, respectively.

Securitization

The MHFG Group engages in securitization activities and securitizes mortgage loans, other loans, government and corporate securities and other types of financial assets in the normal course of business. In these securitization transactions, the Group records the transfer of a financial asset as a sale when all the accounting criteria for a sale under ASC 860, “Transfers and Servicing” (“ASC860”) are met. These criteria are (1) the transferred financial assets are legally isolated from the Group’s creditors, (2) the transferee or beneficial interest holder has the right to pledge or exchange the transferred financial assets, and (3) the Group does not maintain effective control over the transferred financial assets. If all the criteria are not met, the transfer is accounted for as a secured borrowing.

For the six months ended September 30, 2021 and 2022, the MHFG Group neither made significant transfers of financial assets nor recognized significant gains or losses in securitization transactions accounted for as sales. The Group did not retain significant interests in securitization transactions accounted for as sales as of March 31, 2022 and September 30, 2022.

There are certain transactions where transfers of financial assets do not qualify for the aforementioned sales criteria and are accounted for as secured borrowings. These transferred assets continue to be carried on the consolidated balance sheets of the MHFG Group. Such assets are associated with securitization transactions and

F-46

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

loan participation transactions, which amounted to ¥137 billion and ¥220 billion as of March 31, 2022, and ¥145 billion and ¥236 billion as of September 30, 2022, respectively. Liabilities associated with securitization and loan participation transactions are presented as Payables under securities lending transactions and Other short-term borrowings or Long-term debt, respectively, on the consolidated balance sheets.

16. Noninterest income

Details of Noninterest income for the six months ended September 30, 2021 and 2022 are as follows:

	Six months ended September 30,
	2021			2022
	(in millions of yen)
Fee and commission income:
Securities-related business (1)		89,387			74,804
Deposits-related business (1)		7,569			7,769
Lending-related business (2)(4)		78,053			79,811
Remittance business (1)		54,576			52,410
Asset management business (1)		60,596			55,508
Trust-related business (1)		66,393			57,395
Agency business (1)		18,573			18,399
Guarantee-related business (3)		16,781			20,680
Fees for other customer services (1)		82,988			81,968
Total Fee and commission income		474,916			448,744
Foreign exchange gains (losses)—net (3)		21,708			128,897
Trading account gains (losses)—net (2)		83,255			(851,080	)
Investment gains (losses)—net:
Debt securities (3)		(317	)		8,057
Equity securities (3)		135,070			(113,461	)
Equity in earnings (losses) of equity method investees—net (3)		16,541			(5,003	)
Gains on disposal of premises and equipment (3)		1,988			1,811
Other noninterest income (2)(5)		29,234			168,254
Total		762,395			(213,781	)

Notes:

(1) These amounts are revenues from contracts within the scope of ASC 606, “Revenue from contracts with customers” (“ASC 606”).

(2) Part of these amounts are considered to be revenues from contracts that are within the scope of ASC 606.

(3) These amounts are revenues from contracts that do not meet the scope of ASC 606.

(4) Most of the lending-related fees such as commitment fees and arrangement fees are not within the scope of ASC 606.

(5) These amounts include the net unrealized gains resulting from changes in fair values of structured notes that contain embedded derivatives. See Note 17 “Fair value” for further details.

Certain Fee and commission income, Trading account gains (losses)-net and Other noninterest income outlined in the table above are considered to be revenues from contracts that are within the scope of ASC 606. The MHFG Group disaggregates Fee and commission income, which is the main part of revenues within the scope of ASC 606, by type of business or service in the table above.

F-47

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Fee and commission income

For the MHFG Group’s accounting policy for the recognition of Fee and commission income, see Note 1 “Basis of presentation and summary of significant accounting policies” to the consolidated financial statements in the Group’s most recent Form 20-F.

Trust-related business fees consist of trust fees earned primarily through fiduciary asset management and administrative service and other trust-related fees, which amounted to ¥28 billion and ¥38 billion for the six months ended September 30, 2021, respectively, and ¥27 billion and ¥30 billion for the six months ended September 30, 2022, respectively.

Trading account gains (losses)-net and Other noninterest income

In addition to Fee and commission income, Trading account gains (losses)-net and Other noninterest income include certain revenues within the scope of ASC 606. Underwriting fees from trading securities, which amounted to ¥42 billion and ¥24 billion for the six months ended September 30, 2021 and 2022, respectively, are within the scope of ASC 606 and accounted for in Trading account gains (losses)-net. Underwriting fees are primarily recognized on the date which all the considerations of the transaction are fixed. For the six months ended September 30, 2021 and 2022, approximately ¥7 billion and ¥9 billion, respectively, of Other noninterest income were within the scope of ASC 606. Credit card interchange fees are within the scope of ASC 606 and accounted for in Other noninterest income. Credit card interchange fees are earned on credit card transactions conducted through payment networks and recognized upon settlement of the credit card payment transactions.

Contract balances relating to revenues from contracts with customers subject to ASC 606

Contract assets and receivables from contracts with customers subject to ASC 606 are recognized in Accrued income or accounts receivable of Other assets. As of March 31, 2022 and September 30, 2022, the balance of contract assets was not material. Contract liabilities are recognized in unearned income of Other liabilities. As of March 31, 2022 and September 30, 2022, the balance of contract liabilities was not material.

Remaining performance obligations relating to revenues from contracts with customers subject to ASC 606

Remaining performance obligations are services that the MHFG Group has committed to provide in the future in connection with its contracts with customers. As of March 31, 2022 and September 30, 2022, the amount of expected revenues from current obligations to provide services in the future was not material. It excludes revenues from contracts less than one year or contracts that have provisions that allow the Group to recognize revenue at the amount it has the right to invoice.

17. Fair value

Fair value measurements

ASC 820, “Fair Value Measurements” (“ASC 820”), defines fair value as the exchange price that would be received for 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 on the measurement date. ASC 820 also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In addition, ASC 820 precludes (1) the deferral of gains and losses at inception of certain derivative contracts whose fair value was not evidenced by

F-48

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

market-observable data, and (2) the use of block discounts when measuring the fair value of instruments traded in an active market, which were previously applied to large holdings of publicly traded financial instruments.

Fair value hierarchy

ASC 820 specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. The standard describes three levels of inputs that may be used to measure fair value:

Level 1	Quoted prices in active markets for identical assets or liabilities. Level 1 assets and liabilities include debt and equity securities and derivative contracts that are traded in an active exchange market.
Level 2	Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange-traded instruments. If no quoted market prices are available, the fair values of debt securities and over-the-counter derivative contracts in this category are determined using pricing models with inputs that are observable in the market or can be derived principally from or corroborated by observable market data.
Level 3	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose values are determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

Valuation process

The MHFG Group has established valuation policies which govern the principles of fair value measurements and the authority and duty of each department. The Group has also established procedure manuals which describe valuation techniques and related inputs for determining the fair values of various financial instruments. The policies require that the measurement of fair values be carried out in accordance with the procedures performed by the risk management departments or the back offices which are independent from the front offices. The policies also require the risk management departments to check and verify whether the valuation methodologies defined in the procedure manuals are fair and proper and the internal audit departments to periodically review the compliance with the procedures throughout the Group. Although the valuation methodologies and related inputs are consistently used from period to period, a change in the market environment sometimes leads to a change in the valuation methodologies and the inputs. For instance, a change in market liquidity due to a delisting or a new listing is one of the key drivers of revisions to the valuation methodologies and the inputs. The key drivers also include the availability or the lack of market observable inputs and the development of new valuation methodologies. Price verification performed through the Group’s internal valuation process has an important role in identifying whether the valuation methodologies and the inputs need to be changed. The internal valuation process over the prices broker-dealers provide, primarily for Japanese securitization products, is described in more detail below in Available-for-sale securities. A change in the valuation methodologies and/or the inputs requires the revision of the valuation policies and procedure manuals, which is required to be approved by the appropriate authority, either the CEO, the head of risk management, and/or the head of accounting, depending on the nature and characteristics of the change.

F-49

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following is a description of valuation methodologies and inputs used for assets and liabilities measured at fair value on a recurring basis, including the general classification of such instruments pursuant to the fair value hierarchy and the MHFG Group’s valuation techniques used to measure fair values. During the six months ended September 30, 2022, there were no significant changes made to the Group’s valuation techniques and related inputs.

Trading securities and trading securities sold, not yet purchased

When quoted prices for identical securities are available in an active market, the Group uses the quoted prices to measure the fair values of securities and such securities are classified in Level 1 of the fair value hierarchy. Level 1 securities include highly liquid government bonds and equity securities. When quoted prices for identical securities are available, but not actively traded, such securities are classified in Level 2 of the fair value hierarchy. When no quoted market prices are available, the Group estimates fair values by using pricing models with inputs that are observable in the market and such securities are classified in Level 2 of the fair value hierarchy. Level 2 securities include Japanese local government bonds, corporate bonds, and commercial paper. When less liquid market conditions exist for securities, the quoted prices are stale or the prices from independent sources vary significantly, such securities are generally classified in Level 3 of the fair value hierarchy. The fair values of securitization products such as RMBS, CMBS, ABS, and CLO are determined primarily by using a discounted cash flow model. The key inputs used for the model include default rates, recovery rates, prepayment rates, and discount rates. Though most securitization products are classified in Level 2, if the significant inputs are unobservable or cannot be corroborated by observable market data, these financial instruments are classified in Level 3.

Hedge funds the Group invests in are primarily multi strategy funds that employ a fundamental bottom-up investment approach across various asset classes globally. Hedge funds are measured at the net asset value (“NAV”) per share and the Group has the ability to redeem its investment with the investees at the NAV per share at the measurement date or within the near term. Private equity funds have specific investment objectives in connection with their acquisition of equity interests in new and emerging firms in need of capital. Employing venture capital strategies, they provide financing and other support to start-up businesses, medium and small entities in particular geographical areas, and to companies with certain technologies or companies in high-growth industries. Real estate funds invest globally and primarily in real estate companies, debt recapitalizations and direct property. Private equity funds and real estate funds are measured using the NAV per share practical expedient and the Group does not have the ability to redeem its investment in the investees at the NAV per share at the measurement date or within the near term. It is estimated that the underlying assets of the funds would be liquidated within a ten-year period.

Derivative financial instruments

Exchange-traded derivatives are valued using quoted market prices and consequently are classified in Level 1 of the fair value hierarchy. However, the majority of derivatives entered into by the Group are executed over-the-counter and are valued using internal valuation techniques as no quoted market prices are available for such instruments. The valuation techniques depend on the type of derivatives. The principal techniques used to value these instruments are discounted cash flow models and the Black-Scholes option pricing model, which are widely accepted in the financial services industry. The key inputs vary by the type of derivatives and the nature of the underlying instruments and include interest rate yield curves, foreign exchange rates, the spot price of the underlying, volatility and correlation. Each item is classified in either Level 2 or Level 3 depending on the observability of the significant inputs to the model. Level 2 derivatives include plain vanilla interest rate and

F-50

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

currency swaps and option contracts. Derivative contracts valued using significant unobservable correlation or volatility are classified in Level 3 of the fair value hierarchy. In addition, the Group records credit-risk valuation adjustments on over-the-counter derivatives to reflect the credit quality of its counterparties. The Group calculates these credit-risk valuation adjustments using modeled expected exposure, and default probabilities and severity factors that are developed from market credit spreads and other related market information. Also, the Group records funding valuation adjustments to reflect the impact of funding on uncollateralized over-the-counter derivatives and derivatives where the Group is not permitted to use the collateral received, and is recognized where there is evidence that a market participant would incorporate the adjustment into the transfer of the instrument. The Group calculates these funding valuation adjustments incorporating the expected future funding requirements arising from the Group’s positions and the estimated market funding cost which considers the Group’s credit risk. The Group measures these valuation adjustments based on net exposure of a group of financial assets and financial liabilities to credit risk.

Available-for-sale securities

The fair values of available-for-sale securities are determined primarily using the same procedures described under trading securities above. Since private placement bonds have no quoted market prices, the fair values of such bonds are estimated based on a discounted cash flow model using interest rates approximating the current rates for instruments with similar maturities and credit risk. Private placement bonds are classified in either Level 2 or Level 3 depending on the observability of the significant inputs to the model, such as credit risk. The fair values of securitization products such as RMBS, CMBS and ABS are generally based upon single non-binding quoted prices from broker-dealers. Such quotes are validated through the Group’s internal processes and controls. In rare instances where the Group finds the quoted prices to be invalid through its internal valuation process, it adjusts those prices or alternatively estimates their fair values by using a discounted cash flow model to incorporate the Group’s estimates of key inputs such as the most recent value of each underlying asset, cash flows of the underlying assets, and discount margin. The validation of such prices varies depending on the nature and type of the products. For the majority of RMBS and ABS, broker quotes are validated by investigating significant unusual monthly valuation fluctuations and comparing to prices internally computed through discounted cash flow models using assumptions and parameters provided by brokers such as the cash flows of underlying assets, yield curve, prepayment speed and credit spread. For the majority of CMBS, the Group validates broker quotes through a review process that includes the investigation of significant unusual monthly valuation fluctuations and/or a review of underlying assets with significant differences between the valuations of the Group and the broker-dealers being identified. Though most securitization products are classified in Level 2, if the significant inputs are unobservable or cannot be corroborated by observable market data, these financial instruments are classified in Level 3.

Equity securities

Equity securities mainly consist of marketable equity securities. The fair values of the marketable equity securities are based upon quoted market prices for identical equity securities trading as securities in an active market. Equity securities also include investments in certain investment funds measured using the NAV per share practical expedient including private equity funds and real estate funds. These securities are determined primarily using the same procedures described under Trading securities and trading securities sold, not yet purchased above.

F-51

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Other investments

Other investments consist of investments held by consolidated investment companies. These companies typically hold investments in marketable and non-marketable equity securities and debt securities. The fair value of the marketable equity securities is based upon quoted market prices. The fair value of the non-marketable equity securities is based upon significant management judgment, as very limited quoted prices exist. When evaluating such securities, the Group firstly considers recent market transactions of identical securities, if applicable. Thereafter, the Group uses commonly accepted valuation techniques such as earnings multiples based on comparable public securities. Non-marketable equity securities are generally classified in Level 3 of the fair value hierarchy. The fair value of the debt securities is estimated using a discounted cash flow model, since they have no quoted market prices. Those debt securities are classified in Level 3, because the credit risk is unobservable.

Long-term debt

Fair value accounting is elected for certain long-term debt instruments with embedded derivatives. The fair values are determined using a discounted cash flow model that considers the embedded derivatives and the terms and payment structures of the notes. The fair values of the derivatives embedded in such notes are primarily derived by using the same procedures described in Derivative financial instruments above. Such notes are classified in Level 2 or Level 3 depending on the observability of the significant inputs into the model used to determine the fair value of the embedded derivatives. The Group also measures certain notes that contain embedded derivatives at fair value under the practicability exception. For these instruments, fair value is based on quoted prices for identical debt traded as a security in inactive markets. These instruments are classified in Level 2 of the fair value hierarchy.

F-52

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Items measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis at March 31, 2022 and September 30, 2022, including those for which the MHFG Group has elected the fair value option, are summarized below:

March 31, 2022	Level 1		Level 2		Level 3		Assets/ Liabilities measured at fair value
	(in billions of yen)
Assets:
Trading securities (1):
Japanese government bonds		1,604		11		—		1,615
Japanese local government bonds		—		145		—		145
U.S. Treasury bonds and federal agency securities		2,353		711		—		3,064
Other foreign government bonds		907		639		—		1,546
Agency mortgage-backed securities		—		3,176		—		3,176
Residential mortgage-backed securities		—		—		8		8
Certificates of deposit and commercial paper		—		640		—		640
Corporate bonds and other (2)		15		2,743		71		2,829
Equity securities		1,381		213		28		1,622
Trading securities measured at net asset value (3)								284
Derivative financial instruments:
Interest rate contracts		89		4,513		22		4,624
Foreign exchange contracts		—		4,404		32		4,436
Equity-related contracts		77		323		26		426
Credit-related contracts		—		116		2		118
Other contracts		49		18		52		119
Available-for-sale securities:
Japanese government bonds		24,662		497		—		25,159
Japanese local government bonds		—		420		—		420
U.S. Treasury bonds and federal agency securities		373		—		—		373
Other foreign government bonds		363		973		—		1,336
Agency mortgage-backed securities		—		451		—		451
Residential mortgage-backed securities		—		40		18		58
Commercial mortgage-backed securities		—		854		—		854
Japanese corporate bonds and other debt securities		—		1,920		315		2,235
Foreign corporate bonds and other debt securities		—		671		117		788
Equity securities:
Equity securities with readily determinable fair values		3,094		61		—		3,155
Equity securities measured at net asset value (3)								210
Other investments		2		—		56		58
Total assets measured at fair value on a recurring basis		34,969		23,539		747		59,749
Liabilities:
Trading securities sold, not yet purchased		3,054		2,035		—		5,089
Derivative financial instruments:
Interest rate contracts		80		4,636		—		4,716
Foreign exchange contracts		—		4,472		—		4,472
Equity-related contracts		122		183		40		345
Credit-related contracts		—		120		1		121
Other contracts		28		36		52		116
Long-term debt (4)		—		1,962		794		2,756
Total liabilities measured at fair value on a recurring basis		3,284		13,444		887		17,615

F-53

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

September 30, 2022	Level 1		Level 2		Level 3		Assets/ Liabilities measured at fair value
	(in billions of yen)
Assets:
Trading securities (1):
Japanese government bonds		1,858		11		—		1,869
Japanese local government bonds		—		99		—		99
U.S. Treasury bonds and federal agency securities		2,908		1,129		—		4,037
Other foreign government bonds		863		836		—		1,699
Agency mortgage-backed securities		—		4,068		—		4,068
Residential mortgage-backed securities		—		—		7		7
Certificates of deposit and commercial paper		—		797		—		797
Corporate bonds and other (2)		83		2,603		71		2,757
Equity securities		1,621		181		26		1,828
Trading securities measured at net asset value (3)								140
Derivative financial instruments:
Interest rate contracts		202		8,663		51		8,916
Foreign exchange contracts		—		8,529		42		8,571
Equity-related contracts		96		161		28		285
Credit-related contracts		—		164		2		166
Other contracts		36		18		38		92
Available-for-sale securities:
Japanese government bonds		16,366		737		—		17,103
Japanese local government bonds		—		497		—		497
U.S. Treasury bonds and federal agency securities		435		—		—		435
Other foreign government bonds		279		1,001		—		1,280
Agency mortgage-backed securities		—		494		—		494
Residential mortgage-backed securities		—		37		15		52
Commercial mortgage-backed securities		—		869		—		869
Japanese corporate bonds and other debt securities		—		1,992		130		2,122
Foreign corporate bonds and other debt securities		—		731		161		892
Equity securities:
Equity securities with readily determinable fair values		2,913		55		—		2,968
Equity securities measured at net asset value (3)								278
Other investments		—		—		64		64
Total assets measured at fair value on a recurring basis		27,660		33,672		635		62,385
Liabilities:
Trading securities sold, not yet purchased		2,602		3,333		—		5,935
Derivative financial instruments:
Interest rate contracts		185		9,043		1		9,229
Foreign exchange contracts		—		8,662		3		8,665
Equity-related contracts		69		95		50		214
Credit-related contracts		—		90		4		94
Other contracts		28		26		38		92
Long-term debt (4)		—		1,930		806		2,736
Total liabilities measured at fair value on a recurring basis		2,884		23,179		902		26,965

F-54

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Notes:

(1) Trading securities include foreign currency denominated securities for which the MHFG Group elected the fair value option.

(2) The amount includes CLO and convertible bonds, which are classified in Level 3.

(3) In accordance with ASC 820, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented for these classes of assets are intended to permit the reconciliation of the fair value hierarchy to the amounts presented in the statements of financial position. The amounts of unfunded commitments related to these investments at March 31, 2022 and September 30, 2022 were ¥68 billion and ¥61 billion, respectively.

(4) Amounts represent items for which the Group elected the fair value option or for which it applied the practicability exception.

Items measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

The following table presents a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the six months ended September 30, 2021 and 2022:

Six months ended September 30, 2021	April 1, 2021			Gains (losses) in Earnings			Gains (losses) in OCI			Transfers into Level 3			Transfers out of Level 3			Purchases			Sales			Issuances		Settle- ments			September 30, 2021			Change in unrealized gains (losses) still held (6)
	(in billions of yen)
Assets:
Trading securities:
Residential mortgage-backed securities		9			—	(2)		—			—			—			—			—			—		(1	)		8			—
Corporate bonds and other		1,033			4	(2)		—			—			(1	)		232			(144	)		—		(298	)		826			5
Equity securities		29			1	(2)		—			—			—			—			—			—		—			30			1
Derivative financial instruments, net (1):
Interest rate contracts		8			(5	) (2)		—			—			—			—			—			—		2			5			(5	)
Foreign exchange contracts		23			(1	) (2)		—			—			—			—			—			—		—			22			(2	)
Equity-related contracts		(21	)		(14	) (2)		—			—			—			—			—			—		(4	)		(39	)		(22	)
Credit-related contracts		2			(1	) (2)		—			(1	)		—			—			—			—		1			1			1
Other contracts		—			1	(2)		—			—			—			—			—			—		—			1			—
Available-for-sale securities:
Residential mortgage-backed securities		23			—	(3)		—	(4)		—			—			—			—			—		(3	)		20			—
Commercial mortgage-backed securities		716			—	(3)		—	(4)		—			—			63			(6	)		—		(7	)		766			—
Japanese corporate bonds and other debt securities		365			2	(3)		—	(4)		—			—			8			—			—		(28	)		347			2
Foreign corporate bonds and other debt securities		132			—	(3)		(3	) (4)		—			—			19			—			—		(31	)		117			—
Other investments		53			(1	)(3)		—			—			—			34			(1	)		—		(32	)		53			(2	)
Liabilities:
Trading securities sold, not yet purchased		—			—	(2)		—			—			—			(1	)		1			—		—			—			—
Long-term debt		713			6	(5)		(5	) (4)		1			(1	)		—			—			256		(216	)		752			9

F-55

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Six months ended September 30, 2022	April 1, 2022			Gains (losses) in Earnings			Gains (losses) in OCI			Transfers into Level 3		Transfers out of Level 3			Purchases		Sales			Issuances		Settle- ments			September 30, 2022			Change in unrealized gains (losses) still held (6)
	(in billions of yen)
Assets:
Trading securities:
Residential mortgage-backed securities		8			—	(2)		—			—		—			—		—			—		(1	)		7			—
Corporate bonds and other		71			6	(2)		—			8		(1	)		65		(29	)		—		(49	)		71			1
Equity securities		28			1	(2)		—			—		—			—		—			—		(3	)		26			(1	)
Derivative financial instruments, net (1):
Interest rate contracts		22			24	(2)		—			—		—			—		—			—		4			50			(27	)
Foreign exchange contracts		32			7	(2)		—			—		—			—		—			—		—			39			4
Equity-related contracts		(14	)		(12	) (2)		—			—		—			—		—			—		4			(22	)		(129	)
Credit-related contracts		1			(2	) (2)		—			—		—			—		—			—		(1	)		(2	)		(6	)
Other contracts		—			—	(2)		—			—		—			—		—			—		—			—			—
Available-for-sale securities:
Residential mortgage-backed securities		18			—	(3)		—	(4)		—		—			—		—			—		(3	)		15			—
Commercial mortgage-backed securities		—			—	(3)		—	(4)		—		—			—		—			—		—			—			—
Japanese corporate bonds and other debt securities		315			—	(3)		—	(4)		—		—			3		—			—		(188	)		130			5
Foreign corporate bonds and other debt securities		117			—	(3)		1	(4)		—		(9	)		54		—			—		(2	)		161			—
Other investments		56			3	(3)		—			—		—			36		—			—		(31	)		64			—
Liabilities:
Trading securities sold, not yet purchased		—			—	(2)		—			—		—			—		—			—		—			—			—
Long-term debt		794			96	(5)		6	(4)		1		—			—		—			201		(88	)		806			109

Notes:

(1) Total Level 3 derivative exposures have been netted on the table for presentation purposes only.

(2) Gains (losses) in Earnings are reported in Trading account gains (losses)-net, Foreign exchange gains (losses)-net or Other noninterest income (expenses).

(3) Gains (losses) in Earnings are reported in Investment gains (losses)-net.

(4) Gains (losses) in OCI are reported in Other comprehensive income (loss).

(5) Gains (losses) in Earnings are reported in Other noninterest income (expenses).

(6) Amounts represent total gains or losses recognized in earnings and OCI during the period. These gains or losses were attributable to the change in fair value relating to assets and liabilities classified
as Level 3 that were still held at September 30, 2021 and 2022. The amounts of unrealized gains (losses) in OCI are related to Available-for-sale securities and Long-term debt, which were ¥nil 
billion and ¥(5) billion, respectively, at September 30, 2021, and ¥5 billion and ¥6 billion, respectively, at September 30, 2022.

Transfers between levels

During the six months ended September 30, 2021, the transfers into Level 3 included ¥1 billion of net Derivative liabilities and ¥1 billion of Long-term debt. Transfers into Level 3 for net Derivative liabilities were primarily due to changes in the observability of the inputs used to measure fair value of certain credit-related derivatives. Transfers into Level 3 for Long-term debt were primarily due to changes in the observability of the default rate when valuing certain structured notes. During the six months ended September 30, 2021, the transfers out of Level 3 included ¥1 billion of Trading securities and ¥1 billion of Long-term debt. Transfers out of Level 3 for Trading securities were primarily due to increased price transparency for certain foreign bonds. Transfers out of

F-56

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Level 3 for Long-term debt were primarily due to changes in the observability of the default rate when valuing certain structured notes.

During the six months ended September 30, 2022, the transfers into Level 3 included ¥8 billion of Trading securities and ¥1 billion of Long-term debt. Transfers into Level 3 for Trading securities were primarily due to decreased liquidity for certain foreign bonds. Transfers into Level 3 for Long-term debt were primarily due to changes in the observability of the default rate when valuing certain structured notes. During the six months ended September 30, 2022, the transfers out of Level 3 included ¥1 billion of Trading securities and ¥9 billion of Available-for-sale securities. Transfers out of Level 3 for Trading securities were primarily due to increased price transparency for certain foreign bonds. Transfers out of Level 3 for Available-for-sale securities were primarily due to increased liquidity for certain Foreign corporate bonds and other debt securities.

Quantitative information about Level 3 fair value measurements

The following table presents information about significant unobservable inputs related to the MHFG Group’s material classes of Level 3 assets and liabilities at March 31, 2022 and September 30, 2022:

March 31, 2022
Products/Instruments	Fair value			Principal valuation technique	Unobservable inputs	Range of input values		Average (4)
(in billions of yen, except for percentages and basis points)
Trading securities and Available-for-sale securities:
Residential mortgage-backed securities		26		Discounted cash flow Price-based	Prepayment rate Default rate Recovery rate Discount margin		0% - 18% 0% - 0% 100% - 100% 30bps - 167bps		6% 0% 100% 53bps
Corporate bonds and other debt securities		503		Discounted cash flow Price-based	Prepayment rate (1) Default rate (1) Recovery rate (1) Discount margin (1) Discount margin (2)		6% - 24% 0% - 60% 10% - 40% 35bps - 103bps 4bps - 447bps		24% 1% 39% 47bps 340bps
Derivative financial instruments, net:
Interest rate contracts		22		Internal valuation model (3)	IR - IR correlation		23% - 100%		75%
Foreign exchange contracts		32		Internal valuation model (3)	FX - IR correlation FX - FX correlation		11% - 52% 41% - 65%		31% 53%
Equity-related contracts		(14	)	Internal valuation model (3)	Equity - IR correlation Equity correlation Equity volatility		25% - 25% 3% - 100% 13% - 121%		25% 90% 47%
Credit-related contracts		1		Internal valuation model (3)	Default rate Credit correlation		0% - 8% 43% - 100%		1% 66%
Other contracts		—		Internal valuation model (3)	Commodity volatility		0% - 89%		55%
Long-term debt		794		Internal valuation model (3)	IR - IR correlation FX - IR correlation FX - FX correlation Equity - IR correlation Equity - FX correlation Equity correlation Equity volatility Default rate Credit correlation		23% - 100% 11% - 52% 41% - 65% 25% - 25% -17% - 17% 3% - 100% 9% - 121% 0% - 8% 19% - 100%		75% 39% 53% 25% 0% 90% 34% 1% 64%

F-57

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

September 30, 2022
Products/Instruments	Fair value			Principal valuation technique	Unobservable inputs	Range of input values		Average (4)
(in billions of yen, except for percentages and basis points)
Trading securities and Available-for-sale securities:
Residential mortgage-backed securities		22		Discounted cash flow Price-based	Prepayment rate Default rate Recovery rate Discount margin		0% - 17% 0% - 2% 100% - 100% 30bps - 167bps		5% 0% 100% 51bps
Corporate bonds and other debt securities		362		Discounted cash flow Price-based	Prepayment rate (1) Default rate (1) Recovery rate (1) Discount margin (1) Discount margin (2)		26% - 26% 0% - 0% 40% - 40% 63bps - 127bps 4bps - 441bps		26% 0% 40% 74bps 26bps
Derivative financial instruments, net:
Interest rate contracts		50		Internal valuation model (3)	IR - IR correlation		23% - 100%		75%
Foreign exchange contracts		39		Internal valuation model (3)	FX - IR correlation FX - FX correlation		5% - 55% 41% - 65%		38% 53%
Equity-related contracts		(22	)	Internal valuation model (3)	Equity - IR correlation Equity correlation Equity volatility		25% - 25% 3% - 100% 10% - 181%		25% 91% 54%
Credit-related contracts		(2	)	Internal valuation model (3)	Default rate		0% - 13%		2%
Other contracts		—		Internal valuation model (3)	Commodity volatility		0% - 65%		49%
Long-term debt		806		Internal valuation model (3)	IR - IR correlation FX - IR correlation FX - FX correlation Equity - IR correlation Equity - FX correlation Equity correlation Equity volatility Default rate Credit correlation		23% - 100% 5% - 55% 41% - 65% 25% - 25% -17% - 17% 3% - 100% 10% - 181% 0% - 13% 23% - 100%		75% 40% 53% 25% 0% 90% 37% 3% 65%

Notes:

(1) These inputs are mainly used for determining the fair values of securitization products such as CDO, CLO and ABS, other than RMBS and CMBS.

(2) This input is mainly used for determining the fair values of Japanese corporate bonds and foreign corporate bonds.

(3) Internal valuation model includes discounted cash flow models and the Black-Scholes option pricing model.

(4) Averages are calculated by weighting each input by the relative fair value of the respective financial instruments except for derivative related inputs where medians are used.

IR = Interest rate

FX = Foreign exchange

F-58

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Uncertainty of fair value measurements relating to unobservable inputs and interrelationships among unobservable inputs

The following is a description of the uncertainty of the fair value measurements from the use of significant unobservable inputs and a description of interrelationships of the significant unobservable inputs used to measure the fair values of Level 3 assets and liabilities.

(1) Prepayment rate

The prepayment rate is the estimated rate at which voluntary unscheduled repayments of the principal of the underlying assets are expected to occur. The movement of the prepayment rate is generally negatively correlated with borrower delinquency. A change in prepayment rate would impact the valuation of the fair values of financial instruments either positively or negatively, depending on the structure of financial instruments.

(2) Default rate

The default rate is an estimate of the likelihood of not collecting contractual payments. An increase in the default rate would generally be accompanied by a decrease in the recovery rate and an increase in the discount margin. It would also generally impact the valuation of the fair values of financial instruments negatively.

(3) Recovery rate

The recovery rate is an estimate of the percentage of contractual payments that would be collected in the event of a default. An increase in recovery rate would generally be accompanied by a decrease in the default rate. It would also generally impact the valuation of the fair values of financial instruments positively.

(4) Discount margin

The discount margin is the portion of the interest rate over a benchmark market interest rate such as Tokyo Interbank Offered Rate (“TIBOR”) or swap rates. It primarily consists of a risk premium component which is the amount of compensation that market participants require due to the uncertainty inherent in the financial instruments’ cash flows resulting from credit risk. An increase in discount margin would generally impact the valuation of the fair values of financial instruments negatively.

(5) Correlation

Correlation is the likelihood of the movement of one input relative to another based on an established relationship. The change in correlation would impact the valuation of derivatives either positively or negatively, depending on the nature of the underlying assets.

(6) Volatility

Volatility is a measure of the expected change in variables over a fixed period of time. Some financial instruments benefit from an increase in volatility and others benefit from a decrease in volatility. Generally, for a long position in an option, an increase in volatility would result in an increase in the fair values of financial instruments.

F-59

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Items measured at fair value on a nonrecurring basis

Certain assets and liabilities are measured at fair value on a nonrecurring basis. These assets and liabilities primarily include items that are measured at the lower of cost or fair value, and items that were initially measured at cost and have been written down to fair value as a result of impairment. The following table shows the fair value hierarchy for these items as of March 31, 2022 and September 30, 2022:

March 31, 2022	Total		Level 1		Level 2		Level 3		Aggregate cost
	(in billions of yen)
Assets:
Loans		81		—		—		81		128
Loans held-for-sale		76		—		27		49		77
Equity securities (without readily determinable fair values)		4		—		3		1		4
Premises and equipment-net		—		—		—		—		13
Other assets		—		—		—		—		3
Total assets measured at fair value on a nonrecurring basis		161		—		30		131		225
September 30, 2022	Total		Level 1		Level 2		Level 3		Aggregate cost
	(in billions of yen)
Assets:
Loans		94		—		—		94		166
Loans held-for-sale		177		—		51		126		192
Equity securities (without readily determinable fair values)		1		—		1		—		1
Other investments		132		132		—		—		161
Premises and equipment-net		—		—		—		—		1
Total assets measured at fair value on a nonrecurring basis		404		132		52		220		521

Note: The fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred. Accordingly, the carrying values may not equal current fair value.

Loans in the table above became nonaccrual and are measured based upon the observable market price of the loan, which is classified as Level 2, or the fair value of the underlying collateral, which is classified as Level 3.

Loans held-for-sale in the table above are accounted for at the lower of cost or fair value at the end of the period. The items for which fair values are determined by using actual or contractually determined selling price data are classified as Level 2. Due to the lack of current observable market information, the determination of the fair values for items other than the aforementioned requires significant adjustment based upon management judgment and estimation, which results in such items being classified in Level 3 of the hierarchy.

Equity securities (without readily determinable fair values) in the table above consist of non-marketable equity securities which are measured at fair value on a nonrecurring basis, using the measurement alternative for non-marketable equity securities. These equity securities are on a nonrecurring basis either (1) written down to fair value as a result of impairment or (2) adjusted upward or downward to fair value as a result of transactions observed for the identical or similar securities of the same issuer. The fair values of the impaired non-marketable equity securities are determined primarily by using a liquidation value technique. As significant management judgment or estimation is required in the determination of the fair values of non-marketable equity securities, they are classified as Level 3. The fair values of non-marketable equity securities adjusted based on observed transaction prices are mainly classified as Level 2.

F-60

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Other investments in the table above include certain equity method investments which have been impaired and written down to fair value. The fair values of the impaired marketable equity method investments are determined by their quoted market prices. As the securities are traded on an active exchange market, they are classified as Level 1. There were no other investments measured at fair value on a nonrecurring basis as of March 31, 2022.

Premises and equipment—net and Other assets in the table above have been impaired and written down to fair value. There were no other assets measured at fair value on a nonrecurring basis as of September 30, 2022.

Fair value option

The MHFG Group elected the fair value option for certain eligible financial instruments described below.

Foreign currency denominated debt securities

The MHFG Group elected the fair value option for foreign currency denominated debt securities to mitigate the volatility in earnings due to the difference in the recognition of foreign exchange risk between foreign currency denominated debt securities and financial liabilities. Following the election of the fair value option, these debt securities are reported as trading securities in Trading account assets.

Certain hybrid financial instruments

The MHFG Group issues structured notes as part of its client-driven activities. Structured notes are debt instruments that contain embedded derivatives. The Group elected the fair value option for certain structured notes to mitigate accounting mismatches and to achieve operational simplifications. Fair value option has only been elected for part of the portfolio as the Group would not achieve operational simplifications. In addition, the Group measures certain notes that contain embedded derivatives at fair value under the practicability exception. These notes continue to be reported in Long-term debt and interest on these notes continues to be reported in Interest expense on long-term debt based on the contractual rates. Only an immaterial amount included in Long-term debt in the statement of financial position is not eligible for fair value option. The differences between the aggregate fair value of these notes and the aggregate unpaid principal balance of such instruments were ¥90 billion and ¥221 billion at March 31, 2022 and September 30, 2022, respectively. The net unrealized gains (losses) resulting from changes in fair values of these notes recorded in Other noninterest income (expenses) were of ¥(30) billion and ¥128 billion for the six months ended September 30, 2021 and 2022, respectively. Changes in fair value resulting from changes in instrument-specific credit risk were estimated by incorporating the Company’s current credit spreads observable in the bond market.

Fair value of financial instruments

ASC 825, “Financial Instruments” (“ASC 825”), requires the disclosure of the estimated fair value of financial instruments. The fair value of financial instruments is the amount that would be exchanged between willing parties, other than in a forced sale or liquidation. Quoted market prices, if available, are best utilized as estimates of the fair values of financial instruments. However, since no quoted market prices are available for certain financial instruments, fair values for such financial instruments have been estimated based on management’s assumptions, discounted cash flow models or other valuation techniques. Such estimation methods are described in more detail below. These estimates could be significantly affected by different sets of assumptions. There are certain limitations to management’s best judgment in estimating fair values of financial instruments and inherent subjectivity involved in estimation methodologies and assumptions used to estimate fair value. Accordingly, the net realizable or liquidation values could be materially different from the estimates presented below.

F-61

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following is a description of the valuation methodologies used for estimating the fair value of financial assets and liabilities not carried at fair value on the MHFG Group’s consolidated balance sheets.

Cash and due from banks, interest-bearing deposits in other banks, call loans and funds sold, and receivables under resale agreements and securities borrowing transactions

The carrying value of short-term financial assets, such as cash and due from banks, interest-bearing deposits in other banks, call loans and funds sold, and receivables under resale agreements and securities borrowing transactions approximates the fair value of these assets since they generally involve limited losses from credit risk or have short-term maturities with interest rates that approximate market rates.

Investments

The fair value of held-to-maturity securities is determined primarily by using the same procedures and techniques described for trading securities and available-for-sale securities aforementioned in this Note. The fair value of non-marketable equity securities is not readily determinable, nor practicable to estimate, due to the lack of available information. Their carrying amounts of ¥207 billion and ¥193 billion at March 31, 2022 and September 30, 2022, respectively, were not included in the disclosure.

Loans

Loans have been fair valued based on the type of loan, credit quality, prepayment assumptions and remaining maturity. The fair value of loans is determined based on discounted cash flows using interest rates approximating the MHFG Group’s current rates for similar loans. The fair value of collateral dependent nonaccrual loans is determined based on the fair value of the underlying collateral.

Other financial assets

The carrying value of other financial assets, which primarily consist of accounts receivable from brokers, dealers, and customers for securities transactions, accrued income and collateral provided for derivative transactions, approximates the fair value of these assets since they generally involve limited losses from credit risk or have short-term maturities with interest rates that approximate market rates. The majority of other financial assets is classified as Level 2, and included in the table in Note 6 “Other assets and liabilities.”

Noninterest-bearing deposits, call money and funds purchased, and payables under repurchase agreements and securities lending transactions

The carrying value of short-term financial liabilities, such as noninterest-bearing deposits, call money and funds purchased, and payables under repurchase agreements and securities lending transactions approximates the fair value of these liabilities since they generally have short-term maturities with interest rates that approximate market rates.

Interest-bearing deposits

The carrying value of demand deposits approximates the fair value since it represents the amount payable on demand at the balance sheet date. The fair value of time deposits and certificates of deposit is primarily estimated based on discounted cash flow analysis using current interest rates for instruments with similar maturities. The carrying value of short-term certificates of deposit approximates the fair value.

F-62

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Due to trust accounts

The carrying value of due to trust accounts approximates the fair value since they generally have short-term maturities with interest rates that approximate market rates.

Other short-term borrowings

The carrying value of the majority of other short-term borrowings approximates the fair value since they generally have short-term maturities with interest rates that approximate market rates. The fair value of certain borrowings is estimated based on discounted cash flow analysis using interest rates approximating the MHFG Group’s incremental borrowing rates for instruments with similar maturities.

Long-term debt

Long-term debt is fair valued using quoted market prices, if available. Otherwise, the fair value of long-term debt is estimated based on discounted cash flow analysis using interest rates approximating the MHFG Group’s incremental borrowing rates for instruments with similar maturities.

Other financial liabilities

The carrying value of other financial liabilities, which primarily consist of accounts payable to brokers, dealers, and customers for securities transactions, accrued expenses and collateral accepted for derivative transactions, approximates the fair value since they generally have short-term maturities with interest rates that approximate market rates. The majority of other financial liabilities is classified as Level 2, and included in the table in Note 6 “Other assets and liabilities.”

The fair value of certain off-balance-sheet financial instruments, such as commitments to extend credit and commercial letters of credit, was not considered material to the consolidated balance sheets at March 31, 2022 and September 30, 2022.

F-63

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following table shows the carrying amounts and fair values at March 31, 2022 and September 30, 2022, of certain financial instruments, excluding financial instruments which are carried at fair value on a recurring basis and those outside the scope of ASC 825 such as equity method investments as defined in ASC 323, “Investments-Equity Method and Joint Ventures” (“ASC 323”) and lease contracts as defined in ASC 842, “Leases” (“ASC 842”):

	March 31, 2022
	Carrying amount		Estimated fair value
			Total		Level 1		Level 2		Level 3
	(in billions of yen)
Financial assets:
Cash and due from banks, interest-bearing deposits in other banks, call loans and funds sold, and receivables under resale agreements and securities borrowing transactions		68,366		68,366		50,628		17,738		—
Investments		1,519		1,466		485		981		—
Loans, net of allowance (Note)		89,264		90,576		—		—		90,576
Financial liabilities:
Noninterest-bearing deposits, call money and funds purchased, and payables under repurchase agreements and securities lending transactions		58,054		58,054		—		58,054		—
Interest-bearing deposits		121,833		121,807		—		121,807		—
Due to trust accounts		390		390		—		390		—
Other short-term borrowings		7,567		7,567		—		7,567		—
Long-term debt		9,849		9,681		—		8,162		1,519
	September 30, 2022
	Carrying amount		Estimated fair value
			Total		Level 1		Level 2		Level 3
	(in billions of yen)
Financial assets:
Cash and due from banks, interest-bearing deposits in other banks, call loans and funds sold, and receivables under resale agreements and securities borrowing transactions		74,254		74,254		53,921		20,333		—
Investments		2,072		1,893		843		1,050		—
Loans, net of allowance (Note)		97,409		98,912		—		—		98,912
Financial liabilities:
Noninterest-bearing deposits, call money and funds purchased, and payables under repurchase agreements and securities lending transactions		57,249		57,249		—		57,249		—
Interest-bearing deposits		134,533		134,484		—		134,484		—
Due to trust accounts		350		350		—		350		—
Other short-term borrowings		3,593		3,593		—		3,593		—
Long-term debt		10,846		10,198		—		8,632		1,566

Note: Loans, net of allowance include items measured at fair value on a nonrecurring basis.

F-64

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

18. Offsetting of financial assets and financial liabilities

Derivatives

The MHFG Group enters into master netting arrangements such as International Swaps and Derivatives Association, Inc. (“ISDA”) or similar agreements with counterparties to manage mainly credit risks associated with counterparty default. If the predetermined events including counterparty default occur, these enforceable master netting arrangements or similar agreements give the Group the right to offset derivative receivables and derivative payables and related financial collateral such as cash and securities with the same counterparty.

Repurchase and resale agreements and securities lending and borrowing transactions

Repurchase and resale agreements and securities lending and borrowing transactions are generally covered by industry standard master repurchase agreements and industry standard master securities lending agreements with netting terms to manage mainly credit risks associated with counterparty default. In the event of default by the counterparty, these agreements with netting terms provide the Group with the right to offset receivables and payables related to such transactions with the same counterparty, and to liquidate the collateral held.

F-65

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The following table provides information about the offsetting of financial assets and financial liabilities at March 31, 2022 and September 30, 2022. The table includes derivatives, repurchase and resale agreements, and securities lending and borrowing transactions that are subject to enforceable master netting arrangements or similar agreements irrespective of whether or not they are offset on the Group’s consolidated balance sheets.

								Amounts not offset on the balance sheet (3)
	Gross amounts recognized		Gross amounts offset on the balance sheet		Net amounts presented on the balance sheet (2)			Financial instruments (4)			Cash collateral			Net amounts
	(in billions of yen)
March 31, 2022
Assets (1):
Derivatives		9,723		—		9,723	(5)		(7,232	)		(891	)		1,600
Receivables under resale agreements		12,751		—		12,751	(6)		(11,437	)		—			1,314
Receivables under securities borrowing transactions		2,339		—		2,339	(7)		(2,299	)		—			40
Total		24,813		—		24,813			(20,968	)		(891	)		2,954
Liabilities (1):
Derivatives		9,770		—		9,770	(5)		(6,716	)		(1,329	)		1,725
Payables under repurchase agreements		20,070		—		20,070	(6)		(19,366	)		—			704
Payables under securities lending transactions		1,361		—		1,361	(7)		(1,164	)		—			197
Total		31,201		—		31,201			(27,246	)		(1,329	)		2,626
September 30, 2022
Assets (1):
Derivatives		18,030		—		18,030	(5)		(13,751	)		(1,525	)		2,754
Receivables under resale agreements		14,872		—		14,872	(6)		(13,302	)		—			1,570
Receivables under securities borrowing transactions		2,355		—		2,355	(7)		(2,309	)		—			46
Total		35,257		—		35,257			(29,362	)		(1,525	)		4,370
Liabilities (1):
Derivatives		18,294		—		18,294	(5)		(12,900	)		(1,924	)		3,470
Payables under repurchase agreements		23,767		—		23,767	(6)		(22,411	)		—			1,356
Payables under securities lending transactions		1,491		—		1,491	(7)		(1,225	)		—			266
Total		43,552		—		43,552			(36,536	)		(1,924	)		5,092

Notes:

(1) Amounts relating to master netting arrangements or similar agreements where the MHFG Group does not have the legal right of set-off or where uncertainty exists as to the enforceability of these agreements are excluded. For derivatives, the table includes amounts relating to over-the-counter (“OTC”) and OTC-cleared derivatives that are subject to enforceable master netting arrangements or similar agreements.

(2) Derivative assets and liabilities are recorded in Trading account assets and Trading account liabilities, respectively.

(3) Amounts do not exceed the net amounts presented on the balance sheet and do not include the effect of overcollateralization, where it exists.

(4) For derivatives, amounts include derivative assets or liabilities and securities collateral that are eligible for offsetting under enforceable master netting arrangements or similar agreements.

F-66

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

(5) The amounts of derivative assets and liabilities subject to enforceable master netting arrangements or similar agreements were ¥9,326 billion and ¥9,235 billion, respectively, at March 31, 2022, and ¥17,032 billion and ¥17,317 billion, respectively, at September 30, 2022.

(6) The amounts of Receivables under resale agreements and Payables under repurchase agreements subject to enforceable industry standard master repurchase agreements with netting terms were ¥11,537 billion and ¥19,505 billion, respectively, at March 31, 2022, and ¥13,470 billion and ¥22,882 billion, respectively, at September 30, 2022.

(7) The amounts of Receivables under securities borrowing transactions and Payables under securities lending transactions subject to enforceable industry standard master lending agreements with netting terms were ¥2,339 billion and ¥1,172 billion, respectively, at March 31, 2022, and ¥2,355 billion and ¥1,229 billion, respectively, at September 30, 2022.

19. Repurchase agreements and securities lending transactions accounted for as secured borrowings

The following table shows the gross amounts of liabilities associated with repurchase agreements and securities lending transactions, by remaining contractual maturity at March 31, 2022 and September 30, 2022:

	Overnight and continuous		Up to 30 days		31-90 days		Greater than 90 days		Total
	(in billions of yen)
March 31, 2022
Repurchase agreements		7,011		10,621		1,340		1,098		20,070
Securities lending transactions		1,098		74		—		189		1,361
Total		8,109		10,695		1,340		1,287		21,431
September 30, 2022
Repurchase agreements		3,016		13,156		5,782		1,813		23,767
Securities lending transactions		993		225		11		262		1,491
Total		4,009		13,381		5,793		2,075		25,258

The following table shows the gross amounts of liabilities associated with repurchase agreements and securities lending transactions, by class of underlying collateral at March 31, 2022 and September 30, 2022:

	Repurchase agreements		Securities lending transactions
	(in billions of yen)
March 31, 2022
Japanese government bonds and Japanese local government bonds		1,714		217
Foreign government bonds and foreign agency mortgage-backed securities		17,445		90
Commercial paper and corporate bonds		271		52
Equity securities		609		989
Other		31		13
Total		20,070		1,361
September 30, 2022
Japanese government bonds and Japanese local government bonds		2,759		210
Foreign government bonds and foreign agency mortgage-backed securities		19,019		236
Commercial paper and corporate bonds		336		64
Equity securities		1,441		969
Other		212		12
Total		23,767		1,491

F-67

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The MHFG Group is required to post securities as collateral with a fair value equal to or in excess of the principal amount of the cash borrowed under repurchase agreements. For securities lending transactions, the Group receives collateral in the form of cash. These contracts involve risks, including (1) the counterparty may fail to return the securities at maturity and (2) the fair value of the securities posted may decline below the amount of the Group’s obligation and therefore the counterparty may require additional amounts. The Group attempts to mitigate these risks by entering into transactions mainly with central counterparty clearing houses which revalue assets and perform margin maintenance activities on a regular basis, diversifying the maturities and counterparties, and using mainly highly liquid securities.

The amounts or composition of assets pledged as collateral for borrowings and for other purposes have not changed significantly since March 31, 2022. See Note 8 “Pledged assets and collateral” to the consolidated financial statements in the MHFG Group’s annual report on Form 20-F for the year ended March 31, 2022 for additional information.

20. Business segment information

The MHFG Group consists of the following five in-house companies which are categorized based on a customer segment: the Retail & Business Banking Company, the Corporate & Institutional Company, the Global Corporate Company, the Global Markets Company, and the Asset Management Company. These customer segments are regarded as operating segments and constitute reportable segments.

The services that each in-house company is in charge of are as follows.

Retail & Business Banking Company

This company provides financial services for individual customers, small and medium-sized enterprises and middle market firms in Japan.

Corporate & Institutional Company

This company provides financial services for large corporations, financial institutions and public corporations in Japan.

Global Corporate Company

This company provides financial services for Japanese overseas affiliated corporate customers and non-Japanese corporate customers.

Global Markets Company

This company invests in financial products with market risk, such as interest rate risk, equity risk, and credit risk.

Asset Management Company

This company develops financial products and provides financial services that match the asset management needs of its wide range of customers from individuals to institutional investors.

F-68

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

The reportable segment information, set forth below, is derived from the internal management reporting systems used by management to measure the performance of the Group’s operating segments. Management measures the performance of each of the operating segments in accordance with internal managerial accounting rules and practices. In addition, the format and information are presented primarily on the basis of Japanese GAAP. Therefore, they are not consistent with the consolidated financial statements prepared in accordance with U.S. GAAP. A reconciliation is provided for the total amount of all business segments’ “Net business profits (losses) + Net gains (losses) related to ETFs and others” with income before income tax expense under U.S. GAAP, and the total amount of all business segments’ “Fixed assets” with the total amount of Premises and equipment-net, Goodwill, Intangible assets, and right-of-use assets related to operating leases included in Other assets reported under U.S. GAAP. “Fixed assets” pertaining to MHBK, MHTB, and MHSC have been allocated to each segment.

	MHFG (Consolidated)
Six months ended September 30, 2021 (1)	Retail & Business Banking Company			Corporate & Institutional Company		Global Corporate Company		Global Markets Company		Asset Management Company		Others (6)			Total
	(in billions of yen)
Gross profits + Net gains (losses) related to ETFs and others (2)		346.3			231.5		286.6		258.3		29.0		(21.1	)		1,130.6
General and administrative expenses (3)		312.8			100.6		142.1		111.0		16.2		(1.8	)		680.9
Equity in earnings (losses) of equity method investees—net		5.5			2.3		8.9		—		0.9		(1.1	)		16.5
Amortization of goodwill and others		1.1			—		0.2		0.4		3.6		0.5			5.8
Net business profits (losses) (4) + Net gains (losses) related to ETFs and others		37.9			133.2		153.2		146.9		10.1		(20.9	)		460.4
Fixed assets (5)		539.3			181.5		167.2		96.1		—		738.2			1,722.3
	MHFG (Consolidated)
Six months ended September 30, 2022 (1)	Retail & Business Banking Company			Corporate & Institutional Company		Global Corporate Company		Global Markets Company		Asset Management Company		Others (6)			Total
	(in billions of yen)
Gross profits + Net gains (losses) related to ETFs and others (2)		325.7			233.4		317.1		232.5		27.8		26.0			1,162.5
General and administrative expenses (3)		302.2			96.9		152.2		126.1		17.1		27.4			721.9
Equity in earnings (losses) of equity method investees—net		(0.9	)		3.6		11.6		—		0.2		—			14.5
Amortization of goodwill and others		1.0			—		0.2		0.4		3.5		0.5			5.6
Net business profits (losses) (4) + Net gains (losses) related to ETFs and others		21.6			140.1		176.3		106.0		7.4		(1.9	)		449.5
Fixed assets (5)		505.9			151.5		167.8		85.8		—		815.0			1,726.0

Notes:

(1) Income and expenses of foreign branches of MHBK and foreign subsidiaries with functional currencies other than Japanese Yen have been translated for purposes of segment reporting using the budgeted foreign currency rates. Prior period comparative amounts for such foreign currency income and expenses have been translated using current period budgeted foreign currency rates.

F-69

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

(2) “Gross profits + Net gains (losses) related to ETFs and others” is reported instead of sales reported by general corporations. Gross profits is defined as the sum of net interest income, fiduciary income, net fee and commission income, net trading income and net other operating income. Net gains (losses) related to ETFs and others consist of net gains (losses) on ETFs held by MHBK and MHTB on their non-consolidated basis and net gains (losses) on operating investment securities of MHSC on its consolidated basis. For the six months ended September 30, 2021 and 2022, net gains (losses) related to ETFs and others amounted to ¥21.8 billion and ¥8.7 billion, respectively, of which ¥22.9 billion and ¥7.6 billion are included in “Global Markets Company,” respectively.

(3) “General and administrative expenses” excludes non-allocated gains (losses), net.

(4) Net business profits (losses) is used in Japan as a measure of the profitability of core banking operations, and is defined as gross profits (as
defined above) less general and administrative expenses (excluding non-allocated gains (losses), net) plus equity in earnings (losses) of equity
method investees-net less amortization of goodwill and others. Measurement of net business profits (losses) is required for regulatory reporting to
the Financial Services Agency of Japan.

(5) “Fixed assets” is presented based on Japanese GAAP and corresponds to the total amount of the following U.S. GAAP accounts: Premises and equipment-net; Goodwill; Intangible assets; and right-of-use assets related to operating leases included in Other assets. The above table does not include other asset amounts because “Fixed assets” is the only balance sheet metric that management uses when evaluating and making decisions pertaining to the operating segments. “Others” in “Fixed assets” includes assets of headquarters that have not been allocated to each segment, “Fixed assets” pertaining to consolidated subsidiaries that are not subject to allocation, consolidating adjustments, and others. Certain “Fixed assets” expenses have been allocated to each segment using reasonable allocation criteria.

(6) “Others” includes the following items:

• profits and expenses pertaining to consolidated subsidiaries that are not subject to allocation;

• consolidating adjustments, including elimination of internal transaction between each segment;

• equity in earnings (losses) of equity method investees-net that are not subject to allocation; and

• profits and losses pertaining to derivative transactions that reflect the counterparty risk of the individual parties and other factors in determining fair market value.

F-70

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

Reconciliation

As explained above, the measurement bases of the internal management reporting systems and the income and expenses items included are different from the accompanying consolidated statements of income. Therefore, it is impracticable to present reconciliations of all the business segment’s information, other than net business profits (losses), to the corresponding items in the accompanying consolidated statements of income. A reconciliation of “Net business profits (losses) + Net gains (losses) related to ETFs and others” for the six months ended September 30, 2021 and 2022 presented above to income (loss) before income tax expense (benefit) shown on the consolidated statements of income and a reconciliation of “Fixed assets” at September 30, 2021 and 2022 to the total amount of Premises and equipment-net, Goodwill, Intangible assets, and right-of-use assets related to operating leases included in Other assets are as follows:  

	Six months ended September 30,
	2021			2022
	(in billions of yen)
Net business profits (losses) + Net gains (losses) related to ETFs and others		460.4			449.5
Adjustment to reconcile management reporting to Japanese GAAP:
General and administrative expenses: non-allocated gains (losses), net		19.2			21.1
Expenses related to portfolio problems (including reversal of (provision for) general reserve for losses on loans)		(59.9	)		(55.4	)
Gains on reversal of reserves for possible losses on loans, and others		10.2			4.9
Net gains (losses) related to stocks—Net gains (losses) related to ETFs and others		(6.9	)		29.7
Net extraordinary gains (losses)		47.3			5.8
Others		(23.7	)		(10.5	)
Income before income tax expense under Japanese GAAP		446.6			445.1
Adjustment to reconcile Japanese GAAP to U.S. GAAP:
Derivative financial instruments and hedging activities		(47.9	)		1.8
Investments		13.8			(842.1	)
Loans		2.2			(14.0	)
Allowances for credit losses		5.0			11.2
Premises and equipment		(34.9	)		(43.0	)
Land revaluation		1.6			1.4
Business combinations		3.4			(5.1	)
Pension liabilities		(63.9	)		(26.3	)
Consolidation of variable interest entities		51.1			(53.6	)
Foreign currency translation		2.4			(37.4	)
Others		3.8			(0.6	)
Income (loss) before income tax expense (benefit) under U.S. GAAP		383.2			(562.6	)

F-71

MIZUHO FINANCIAL GROUP, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)—(Continued)

	As of September 30,
	2021		2022
	(in billions of yen)
Fixed assets		1,722.3		1,726.0
U.S. GAAP adjustments (Note)		763.6		651.9
Premises and equipment-net, Goodwill, Intangible assets, and right-of-use assets related to operating leases included in Other assets		2,485.9		2,377.9

Note: The U.S. GAAP adjustments are primarily comprised of GAAP differences mainly from right-of-use assets related to operating leases not recognized under Japanese GAAP; internally developed software, which was impaired under Japanese GAAP; land, which was revalued under Japanese GAAP; and the consolidation of certain variable interest entities, which are not consolidated under Japanese GAAP.

F-72

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors of

Mizuho Financial Group, Inc.

Results of Review of Interim Consolidated Financial Statements

We have reviewed the accompanying consolidated balance sheet of Mizuho Financial Group, Inc. and subsidiaries (the “Company”) as of September 30, 2022, the related consolidated statements of income, comprehensive income, equity and cash flows for the six-month periods ended September 30, 2022 and 2021, and the related notes (collectively referred to as the “interim consolidated financial statements”). Based on our reviews, we are not aware of any material modifications that should be made to the interim consolidated financial statements for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheet of the Company as of March 31, 2022, the related consolidated statements of income, comprehensive income, equity and cash flows for the year then ended, and the related notes (not presented herein); and in our report dated July 1, 2022, we expressed an unqualified audit opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying consolidated balance sheet as of March 31, 2022, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

Basis for Review Results

These interim consolidated financial statements are the responsibility of the Company’s management. 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 review in accordance with the standards of the PCAOB. A review of interim consolidated financial statements consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the PCAOB, the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

/s/ Ernst & Young ShinNihon LLC

Tokyo, Japan

December 28, 2022

F-73

Exhibit 15

December 28, 2022

To the Shareholders and Board of Directors of

Mizuho Financial Group, Inc.

We are aware of the incorporation by reference in the Registration Statement (Form F-3 No. 333-266555) of Mizuho Financial Group, Inc. of our report dated December 28, 2022 relating to the unaudited interim consolidated financial statements of Mizuho Financial Group, Inc. as of September 30, 2022 and for the six-month periods ended September 30, 2022 and 2021 that are included in its Form 6-K dated December 28, 2022.

Under Rule 436(c) of the Securities Act 1933 (the “Act”), our review report is not a part of the registration statement prepared or certified by accountants within the meaning of Section 7 or 11 of the Act.

/s/ Ernst & Young ShinNihon LLC

Tokyo, Japan