Exhibit 11.1 FAIR, ISAAC AND COMPANY, INCORPORATED COMPUTATION OF EARNINGS PER SHARE (In thousands except per share data) Year Ended September 30, -------------------------- 1996 1995 1994 ---- ---- ---- Primary Earnings Per Share: Weighted Average Common Shares Outstanding 12,414 12,206 11,810 Dilutive effect of outstanding options (as determined by the treasury stock method) 335 517 666 ------- ------- ------- Weighted Average Common Shares outstanding, as Adjusted 12,749 12,723 12,476 ======= ======= ======= Net Income $16,179 $12,695 $10,049 ======= ======= ======= Primary Earnings per Share $ 1.27 $ 1.00 $ .81 ======= ======= ======= Fully Diluted Earnings Per Share: Weighted Average Common Shares Outstanding 12,414 12,206 11,810 Dilutive effect of outstanding options (as determined by the treasury stock method) 380 561 736 ------- ------- ------- Weighted Average Common Shares, as Adjusted 12,794 12,767 12,546 ======= ======= ======= Net Income $16,179 $12,695 $10,049 ======= ======= ======= Fully Diluted Earnings Per Share $ 1.26 $ .99 $ .80 ======= ======= =======