Exhibit 23.1

                              [KPMG LLP LETTERHEAD]

                         CONSENT OF INDEPENDENT AUDITORS

The Board of Directors
Fair, Isaac and Company, Incorporated:

We consent to incorporation  by reference in the registration  statement on Form
S-8 of Fair,  Isaac and Company,  Incorporated  and  subsidiaries of our reports
dated October 26, 1999,  relating to the  consolidated  balance  sheets of Fair,
Isaac and Company,  Incorporated  and  subsidiaries as of September 30, 1999 and
1998,  and the  related  consolidated  statements  of income  and  comprehensive
income,  stockholders'  equity,  and cash  flows  for  each of the  years in the
three-year  period ended  September 30, 1999,  and the related  schedule,  which
reports appear or are incorporated by reference in the September 30, 1999 annual
report on Form 10-K of Fair, Isaac and Company, Incorporated, and subsidiaries.


                                                                    /s/ KPMG LLP

San Francisco, California
February 1, 2000


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