SC 13D/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 6)*

Tier Technologies, Inc.

(Name of Issuer)

Common Stock, $0.01 par value per share

(Title of Class of Securities)

88650Q100

(CUSIP Number)

Michael R. Murphy

Discovery Group I, LLC

191 North Wacker Drive

Suite 1685

Chicago, Illinois 60606

Telephone Number: (312) 265-9600

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

March 5, 2009

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 88650Q100
	1.	Names of Reporting Persons. Discovery Equity Partners, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Illinois
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power None.
			8.	Shared Voting Power 2,109,667
			9.	Sole Dispositive Power None.
			10.	Shared Dispositive Power 2,109,667
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,109,667
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 10.7%
	14.	Type of Reporting Person (See Instructions) PN

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CUSIP No. 88650Q100
	1.	Names of Reporting Persons. Discovery Group I, LLC
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) AF
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power None.
			8.	Shared Voting Power 2,459,404
			9.	Sole Dispositive Power None.
			10.	Shared Dispositive Power 2,459,404
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,459,404
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 12.5%
	14.	Type of Reporting Person (See Instructions) OO

3

CUSIP No. 88650Q100
	1.	Names of Reporting Persons. Daniel J. Donoghue
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) AF
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power None.
			8.	Shared Voting Power 2,459,404
			9.	Sole Dispositive Power None.
			10.	Shared Dispositive Power 2,459,404
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,459,404
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 12.5%
	14.	Type of Reporting Person (See Instructions) IN

4

CUSIP No. 88650Q100
	1.	Names of Reporting Persons. Michael R. Murphy
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) AF
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power None.
			8.	Shared Voting Power 2,459,404
			9.	Sole Dispositive Power None.
			10.	Shared Dispositive Power 2,459,404
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,459,404
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 12.5%
	14.	Type of Reporting Person (See Instructions) IN

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Item 1.	Security and Issuer
	This Amendment No. 6 to Schedule 13D (“Amendment No. 6”) relates to the Common Stock, par value $0.01 per share (the “Common Stock”), of Tier Technologies, Inc., a Delaware corporation (the “Company”), which has its principal executive offices at 10780 Parkridge Boulevard, Suite 400, Reston Virginia 20191.  This Amendment No. 6 amends and supplements, as set forth below, the information contained in items 1, 3, 4, 5 and 6 of the Schedule 13D filed by the Reporting Persons with respect to the Company on May 12, 2008, as amended by Amendment No. 1 thereto filed by the Reporting Persons on August 20, 2008, Amendment No. 2 thereto filed by the Reporting Persons on September 9, 2008, Amendment No. 3 thereto filed by the Reporting Persons on October 20, 2008, Amendment No. 4 thereto filed by the Reporting Persons on November 17, 2008 and Amendment No. 5 thereto filed by the Reporting Persons on December 4, 2008 (as so amended, the “Schedule 13D”).  All capitalized terms used herein but not defined herein have the meanings set forth in the Schedule 13D.  Except as amended by this Amendment No. 6, all information contained in the Schedule 13D is, after reasonable inquiry and to the best of the Reporting Persons’ knowledge and belief, true, complete and correct as of the date of this Amendment No. 6.
Item 3.	Source and Amount of Funds or Other Consideration
	Item 3 of the Schedule 13D is hereby amended to read in its entirety as follows: The total purchase price for the 2,459,404 shares of Common Stock beneficially owned by Discovery Group and Messrs. Donoghue and Murphy as of March 11, 2009 was approximately $18,981,855, and the total purchase price for the 2,109,667 shares of Common Stock beneficially owned by Discovery Equity Partners was approximately $16,308,226.  The source of such funds was the assets of Discovery Equity Partners and another private investment partnership (collectively, the “Partnerships”) over which Discovery Group exercises discretionary investment management authority, including proceeds of margin loans under margin loan facilities maintained in the ordinary course of business by the Partnerships with a broker on customary terms and conditions.  The Partnerships are the legal owner of all of the Common Stock beneficially owned by Discovery Group and Messrs. Donoghue and Murphy.
Item 4.	Purpose of Transaction
	Item 4 of the Schedule 13D is hereby amended by adding the following as the ninth and tenth paragraphs thereof: In accordance with such notice, the Reporting Persons solicited proxies for the election of Messrs. Donoghue and Murphy at the Company’s 2009 Annual Meeting of Stockholders which was held on March 11, 2009.  Based on an estimate provided by Discovery Equity Partners’ proxy solicitor, the Reporting Persons believe that the stockholders of the Company have elected Messrs, Donoghue and Murphy to the Company’s Board of Directors.  Certification of the final results of the election by the independent inspector of elections, IVS Associates, is expected to be completed in March 2009. Messrs. Donoghue and Murphy have stated that, if so elected to the Board of Directors of the Company, they intend to seek to address what they believe should be four principal objectives for the Company:  (i) the reduction of the Company’s corporate overhead; (ii) the return of any excess cash of the Company to its stockholders; (iii) the elimination of unnecessary takeover defenses of

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	the Company; and (iv) the exploration of strategic alternatives available to the Company intended to maximize the value of the Company to its stockholders.  Messrs. Donoghue and Murphy intend to develop and present to the Board of Directors specific plans and proposals intended to effectuate such objectives.  They also reserve to right to develop and present other plans and proposals that they believe to be in the best interests of the Company’s stockholders.
Item 5.	Interest in Securities of the Issuer
	Item 5 of the Schedule 13D is hereby amended to read in its entirety as follows: The information concerning percentages of ownership set forth below is based on 19,734,863 shares of Common Stock reported outstanding as of January 16, 2009 in the Company’s Proxy Statement on Schedule 14A, filed on February 10, 2009. Discovery Equity Partners beneficially owns 2,109,667 shares of Common Stock as of March 11, 2009, which represents 10.7% of the outstanding Common Stock. Discovery Group beneficially owns 2,459,404 shares of Common Stock as of March 11, 2009, which represents 12.5% of the outstanding Common Stock. Mr. Donoghue beneficially owns 2,459,404 shares of Common Stock as of March 11, 2009, which represents 12.5% of the outstanding Common Stock. Mr. Murphy beneficially owns 2,459,404 shares of Common Stock as of March 11, 2009, which represents 12.5% of the outstanding Common Stock. Discovery Group is the sole general partner of Discovery Equity Partners and has sole discretionary investment authority with respect to the other Partnership’s investment in the Common Stock.  Messrs. Donoghue and Murphy are the sole managing members of Discovery Group.  As a consequence, Discovery Group and Messrs. Donoghue and Murphy may be deemed to share beneficial ownership of all of the shares of Common Stock owned by both of the Partnerships, while Discovery Equity Partners shares beneficial ownership with Discovery Group and Messrs. Donoghue and Murphy of only the shares of Common Stock owned by it. The transactions in Common Stock effected by the Reporting Persons during the past 60 days are set out in Exhibit 1 hereto. No person other than the Partnerships is known to any Reporting Person to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, any of the shares of Common Stock reported herein.
Item 6.	Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer
	Item 6 of the Schedule 13D is hereby amended to read in its entirety as follows: There are no contracts, arrangements, understandings or relationships (legal or otherwise) between or among any of the Reporting Persons and any other person with respect to any securities of the Company other than the governing documents of Discovery Group and the Partnerships, the margin loan facilities referred to under Item 3 above, the Joint Filing Agreements of the Reporting Persons with respect to the Schedule 13D that were included as exhibits thereto, the Joint Filing Agreement of the Reporting Persons with respect to this Amendment No. 6 included as Exhibit 2 to this Amendment No. 6, and the Powers of Attorney granted by Messrs Donoghue and Murphy

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	with respect to reports under Section 13 of the Securities Exchange Act of 1934, as amended, which Powers of Attorney are included as Exhibit 3 and Exhibit 4, respectively, to this Amendment No. 6.
Item 7.	Material to Be Filed as Exhibits
	Exhibit 1:                List of transactions by Reporting Persons in the Company’s Common Stock during the past 60 days.
	Exhibit 2:                Joint Filing Agreement dated as of March 12, 2009, by and among Discovery Equity Partners; Discovery Group; Daniel J. Donoghue; and Michael R. Murphy.
	Exhibit 3:                Power of Attorney of Daniel J. Donoghue, dated as of April 28, 2008.
	Exhibit 4:                Power of Attorney of Michael R. Murphy, dated as of April 28, 2008.

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Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

March 12, 2009

Date

DISCOVERY GROUP I, LLC,

for itself and as general partner of

DISCOVERY EQUITY PARTNERS, L.P.

By:  Michael R. Murphy*

Signature

Michael R. Murphy, Managing Member

Name/Title

Daniel J. Donoghue*

Signature

Daniel J. Donoghue

Name/Title

Michael R. Murphy*

Signature

Michael R. Murphy

Name/Title

*By: /s/ Mark Buckley

Mark Buckley

Attorney-in-Fact for Daniel J. Donoghue

Attorney-in-Fact for Michael R. Murphy

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Exhibit Index

Exhibit 1:	List of transactions by Reporting Persons in the Company’s Common Stock during the past 60 days.
Exhibit 2:	Joint Filing Agreement dated as of March 12, 2009, by and among Discovery Equity Partners; Discovery Group; Daniel J. Donoghue; and Michael R. Murphy.
Exhibit 3:	Power of Attorney of Daniel J. Donoghue, dated as of April 28, 2008.
Exhibit 4:	Power of Attorney of Michael R. Murphy, dated as of April 28, 2008.

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EX-1

EXHIBIT 1

TRANSACTIONS DURING THE PAST 60 DAYS

The Reporting Persons engaged in the following transactions in shares of Common Stock of the Company during the past 60 days.  Such transactions involved the purchase of shares on the Nasdaq National Market System.

Date	Type	Price		Shares
3/4/2009	Purchase	$	4.88	100
3/4/2009	Purchase	5.055		100
3/4/2009	Purchase	5.20		400
3/4/2009	Purchase	5.23		1000
3/4/2009	Purchase	5.24		100
3/4/2009	Purchase	5.25		2000
3/4/2009	Purchase	5.2575		125
3/4/2009	Purchase	5.27		100
3/4/2009	Purchase	5.28		800
3/4/2009	Purchase	5.29		36204
3/4/2009	Purchase	5.30		142371
3/4/2009	Purchase	5.305		400
3/4/2009	Purchase	5.3075		100
3/4/2009	Purchase	5.308		100
3/4/2009	Purchase	5.31		10700
3/4/2009	Purchase	5.315		300
3/4/2009	Purchase	5.32		4100
3/4/2009	Purchase	5.33		800
3/4/2009	Purchase	5.435		100
3/4/2009	Purchase	5.475		100
3/5/2009	Purchase	4.925		100
3/5/2009	Purchase	5.20		200
3/5/2009	Purchase	5.205		100
3/5/2009	Purchase	5.215		100
3/5/2009	Purchase	5.22		300
3/5/2009	Purchase	5.23		600
3/5/2009	Purchase	5.235		1000
3/5/2009	Purchase	5.24		2400
3/5/2009	Purchase	5.243		100
3/5/2009	Purchase	5.25		100
3/5/2009	Purchase	5.275		100
3/5/2009	Purchase	5.28		30007

Date	Type	Price		Shares
3/5/2009	Purchase	$	5.29	36800
3/5/2009	Purchase	5.295		800
3/5/2009	Purchase	5.30		34200
3/5/2009	Purchase	5.305		400
3/5/2009	Purchase	5.31		7571
3/5/2009	Purchase	5.315		100
3/5/2009	Purchase	5.32		2100
3/5/2009	Purchase	5.3225		100
3/5/2009	Purchase	5.33		1300
3/5/2009	Purchase	5.335		100
3/5/2009	Purchase	5.34		2100
3/5/2009	Purchase	5.345		1300
3/5/2009	Purchase	5.35		800
3/6/2009	Purchase	5.095		100
3/6/2009	Purchase	5.30		100
3/6/2009	Purchase	5.32		400
3/6/2009	Purchase	5.40		400
3/6/2009	Purchase	5.41		100
3/6/2009	Purchase	5.4125		100
3/6/2009	Purchase	5.42		400
3/6/2009	Purchase	5.43		500
3/6/2009	Purchase	5.46		633
3/6/2009	Purchase	5.475		500
3/6/2009	Purchase	5.48		1000
3/6/2009	Purchase	5.51		400
3/6/2009	Purchase	5.52		100
3/6/2009	Purchase	5.53		200
3/6/2009	Purchase	5.56		1100
3/6/2009	Purchase	5.565		200
3/6/2009	Purchase	5.57		500
3/6/2009	Purchase	5.60		5381
3/9/2009	Purchase	5.43		100
3/9/2009	Purchase	5.436		400
3/9/2009	Purchase	5.44		100
3/9/2009	Purchase	5.445		200
3/9/2009	Purchase	5.45		300
3/9/2009	Purchase	5.455		100
3/9/2009	Purchase	5.46		3900
3/9/2009	Purchase	5.47		3100
3/9/2009	Purchase	5.47		100
3/9/2009	Purchase	5.48		100
3/9/2009	Purchase	5.49		402

Date	Type	Price		Shares
3/9/2009	Purchase	$	5.51	290
3/9/2009	Purchase	5.52		5290
3/9/2009	Purchase	5.53		100
3/9/2009	Purchase	5.55		914
3/9/2009	Purchase	5.56		2418
3/9/2009	Purchase	5.59		1300
3/9/2009	Purchase	5.60		400
3/9/2009	Purchase	5.62		2000
3/9/2009	Purchase	5.62		883
3/9/2009	Purchase	5.625		800
3/9/2009	Purchase	5.63		100
3/9/2009	Purchase	5.6325		100
3/9/2009	Purchase	5.64		2321
3/9/2009	Purchase	5.641		100
3/9/2009	Purchase	5.67		1852
3/9/2009	Purchase	5.70		814
3/9/2009	Purchase	5.75		3432
3/9/2009	Purchase	5.78		1421
3/10/2009	Purchase	5.55		22
3/10/2009	Purchase	5.56		100
3/10/2009	Purchase	5.59		5430
3/10/2009	Purchase	5.59		100
3/10/2009	Purchase	5.60		1560
3/10/2009	Purchase	5.605		500
3/10/2009	Purchase	5.61		2630
3/10/2009	Purchase	5.62		200
3/10/2009	Purchase	5.625		100
3/10/2009	Purchase	5.63		2100
3/10/2009	Purchase	5.66		2520
3/10/2009	Purchase	5.67		300
3/10/2009	Purchase	5.68		1100
3/10/2009	Purchase	5.681		100
3/10/2009	Purchase	5.68		400
3/10/2009	Purchase	5.683		100
3/10/2009	Purchase	5.69		2500
3/10/2009	Purchase	5.69		300
3/10/2009	Purchase	5.70		300
3/10/2009	Purchase	5.70		3598
3/10/2009	Purchase	5.75		1100
3/10/2009	Purchase	5.78		1000
3/10/2009	Purchase	5.80		100
3/10/2009	Purchase	5.81		1342

Date	Type	Price		Shares
3/10/2009	Purchase	$	5.82	200
3/10/2009	Purchase	5.83		200
3/10/2009	Purchase	5.85		105300
3/10/2009	Purchase	5.86		3200

EX-2

EXHIBIT 2

JOINT FILING AGREEMENT

The undersigned hereby agree to the joint filing of the Amendment No. 6 to Schedule 13D to which this Agreement is attached.

Dated:  March 12, 2009
	DISCOVERY GROUP I, LLC
	for itself and as general partner of
	DISCOVERY EQUITY PARTNERS, L.P.
	By	Michael R. Murphy*
		Michael R. Murphy
		Managing Member
	Daniel J. Donoghue*
	Daniel J. Donoghue
	Michael R. Murphy*
	Michael R. Murphy
	*By:	/s/ Mark Buckley
		Mark Buckley
		Attorney-in-Fact for Daniel J. Donoghue
		Attorney-in-Fact for Michael R. Murphy

EX-3

EXHIBIT 3

POWER OF ATTORNEY

The undersigned, Daniel J. Donoghue, hereby appoints Mark Buckley his true and lawful attorney-in-fact and agent, with full power to execute and file with the United States Securities and Exchange Commission and any stock exchange or similar authority, for and on his behalf in any and all capacities, any and all reports required to be filed pursuant to Section 13 of the Securities Exchange Act of 1934 and the rules thereunder on Schedule 13D or 13G, any and all amendments to such reports, with all exhibits, and any other forms or documents as may be necessary in connection with the filing of such reports with the United States Securities and Exchange Commission and any stock exchange or similar authority, granting unto said attorney full power and authority to do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete, as fully as the undersigned might or could do in person.

This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a signed writing delivered to the foregoing attorney-in-fact and agent.

IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be executed this 28th day of April, 2008.

/s/ Daniel J. Donoghue

Daniel J. Donoghue

STATE OF ILLINOIS	)
	) SS.
COUNTY OF COOK	)

I, Kareema M. Cruz, a Notary Public in and for the County of Cook, State of Illinois, DO HEREBY CERTIFY that Daniel J. Donoghue, who is personally known to me to be the same person whose name is subscribed to the foregoing instrument, appeared before me this day in person and acknowledged that he signed and delivered the said instrument as his own free and voluntary act, for the uses and purposes therein set forth.

Given under my hand and notarial seal, this 28th day of April, 2008.

/s/ Kareema M. Cruz

Notary Public

EX-4

EXHIBIT 4

POWER OF ATTORNEY

The undersigned, Michael R. Murphy, hereby appoints Mark Buckley his true and lawful attorney-in-fact and agent, with full power to execute and file with the United States Securities and Exchange Commission and any stock exchange or similar authority, for and on his behalf in any and all capacities, any and all reports required to be filed pursuant to Section 13 of the Securities Exchange Act of 1934 and the rules thereunder on Schedule 13D or 13G, any and all amendments to such reports, with all exhibits, and any other forms or documents as may be necessary in connection with the filing of such reports with the United States Securities and Exchange Commission and any stock exchange or similar authority, granting unto said attorney full power and authority to do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete, as fully as the undersigned might or could do in person.

This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a signed writing delivered to the foregoing attorney-in-fact and agent.

IN WITNESS WHEREOF the undersigned has caused this Power of Attorney to be executed this 28th day of April, 2008.

/s/ Michael R. Murphy

Michael R. Murphy

STATE OF ILLINOIS	)
	) SS.
COUNTY OF COOK	)

I, Kareema M. Cruz, a Notary Public in and for the County of Cook, State of Illinois, DO HEREBY CERTIFY that Michael R. Murphy, who is personally known to me to be the same person whose name is subscribed to the foregoing instrument, appeared before me this day in person and acknowledged that he signed and delivered the said instrument as his own free and voluntary act, for the uses and purposes therein set forth.

Given under my hand and notarial seal, this 28th day of April, 2008.

/s/ Kareema M. Cruz

Notary Public