MINNEAPOLIS, MN, Sept. 1, 2005 -- Fair Isaac Corporation (NYSE:FIC), the leading provider of analytics and decision technology, today announced that leading industry analyst firm IDC has recognized Fair Isaac as the worldwide revenue leader in the analytic applications market for the third consecutive year.

According to the recent IDC report "Worldwide Business Analytics Software 2004 Vendor Shares" (IDC #33756), Fair Isaac led the worldwide Analytic Applications revenue category in 2004 with revenues of $384.5 million. These results represent an increase of more than 25 percent in revenues from 2003. According to the IDC report, the analytic applications market includes financial and business performance management applications, customer relationship management (CRM) analytic applications, and supply chain and operational analytic applications.

"Fair Isaac continues to successfully deliver analytic applications that support critical business process and overall performance improvements," said Henry Morris, group vice president for applications and information access software research at IDC. "Fair Isaac's solutions for vital processes such as customer management, risk management and fraud control are well-established in the financial services industry, and the company continues to focus on expanding the relevance and impact of its analytics across industries."

"The IDC ranking reflects our ongoing success in delivering world-class analytic technologies that drive smarter, faster, more profitable decisions," said Michael Chiappetta, vice president of product development at Fair Isaac. "We are advancing our goal of equipping more businesses with solutions and tools that give their decisions unmatched precision and consistency, and we believe that we are well-positioned to build upon that momentum as we continue to push the potential of analytics to new levels of innovation."

Fair Isaac's analytic applications include predictive models and strategy optimization that result in more targeted and successful decisions; data management and data analysis services that bring complete customer transactional information to every decision; and business rules management software that implements decisions in a real-time environment for faster, more consistent and more accurate decisions. Fair Isaac also provides tools and services that help businesses develop and deploy their own systems for Enterprise Decision Management. For more information, visit www.fairisaac.com.

About Fair Isaac

Fair Isaac Corporation (NYSE:FIC) is the preeminent provider of creative analytics that unlock value for people, businesses and industries. The company's predictive modeling, decision analysis, intelligence management, decision management systems and consulting services power billions of mission-critical customer decisions a year. Founded in 1956, Fair Isaac helps thousands of companies in over 60 countries acquire customers more efficiently, increase customer value, reduce fraud and credit losses, lower operating expenses and enter new markets more profitably. Most leading banks and credit card issuers rely on Fair Isaac solutions, as do insurers, retailers, telecommunications providers, healthcare organizations, and government agencies. Through the www.myfico.com Web site, consumers use the company's FICO(R) scores, the standard measure of credit risk, to manage their financial health.

Statement Concerning Forward-Looking Information

Except for historical information contained herein, the statements contained in this press release that relate to Fair Isaac are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially, including any unforeseen technical difficulties related to the implementation, use and functionality of the offerings, the risks that customers will not perceive material benefits from the offerings, failure of the products to deliver the expected results, the possibility of errors or defects in the offerings, regulatory changes applicable to the use of consumer credit and other data, and other risks described from time to time in Fair Isaac's SEC reports, including its Annual Report on Form 10-K for the year ended September 30, 2004, and quarterly report on Form 10-Q for the period ended June 30, 2005. Forward-looking statements should be considered with caution. If any of these risks or uncertainties materializes or any of these assumptions proves incorrect, Fair Isaac's results could differ materially from Fair Isaac's expectations in these statements. Fair Isaac disclaims any intent or obligation to update these forward-looking statements.

Fair Isaac and FICO are trademarks or registered trademarks of Fair Isaac Corporation, in the United States and/or in other countries. Other product and company names herein may be trademarks of their respective owners.

Fair Isaac Corporation
John D. Emerick, Jr., 800-213-5542 (Investors & Analysts)
investor@fairisaac.com
Angela Carlson, 415-492-5373 (Media)
acarlson@fairisaac.com