SEC Form 5

FORM 5		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0362 Estimated average burden hours per response: 1.0
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Form 3 Holdings Reported.
	Form 4 Transactions Reported.

1. Name and Address of Reporting Person* Pung Michael J (Last) (First) (Middle) 901 MARQUETTE AVENUE SUITE 3200 (Street) MINNEAPOLIS MN 55402 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol FAIR ISAAC CORP [ FIC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Vice President
	3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 09/30/2005
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)	4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
				Amount	(A) or (D)	Price
Common Stock	06/30/2005		J(1)	332.6179	A	$30.0645	332.6179	D
Common Stock	09/21/2005		J(2)	0.1594	A	$41.71	332.7773	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)	5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
					(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. ESPP purchase.

2. Reinvested dividends from ESPP plan.

Remarks:

	/s/ Nancy E. Fraser, Attorney-in-fact	11/08/2005
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

 POWER OF ATTORNEY


KNOW ALL BY THESE PRESENTS, the undersigned
hereby constitutes and appoints ANDREA M. FIKE, NANCY E. FRASER and CHARLES
M. OSBORNE the undersigned's true and lawful attorney-in-fact to:


1.	execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and / or director of Fair Isaac Corporation (the
"Company"), Forms 3, 4 and 5, including Form ID application and
verification, in accordance with Section 16(a) of the Securities Exchange
Act of 1934, as amended, and the rules and regulations thereunder;


2.	do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
ID, Form 3, 4 or 5 and timely file such form with the United States
Securities and Exchange Commission and any stock exchange or similar
authority; and

3.	take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the documents
executed by such attorney-in-fact on behalf of the undersigned pursuant to
this Power of Attorney shall be in such form and shall contain such terms
and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

The undersigned hereby grants to such
attorney-in-fact full power and authority to do and perform any and every
act and thing whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact or
attorney-in-fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue
of this Power of Attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorney-in-fact, in serving in
such capacity at the request of the undersigned, is not assuming, nor is
the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.

	This Power of
Attorney shall remain in full force and effect until the undersigned is no
longer required to file Forms 3, 4 and 5 with respect to the undersigned's
holdings of and transactions in securities issued by the Company, unless
earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorney-in-fact.

	IN WITNESS WHEREOF, the undersigned has
caused the Power of Attorney to be executed as of this 28th day of March
2005.



/s/ Michael J. Pung