EXHIBIT 11.1 TSI INTERNATIONAL SOFTWARE LTD. COMPUTATION OF EARNINGS PER SHARE Three Months Ended Nine Months Ended September 30, September 30 ---------------------- ---------------------- 1999 1998 1999 1998 ---------- ---------- ---------- ---------- Weighted average common shares outstanding 25,624,921 21,924,662 24,612,447 20,811,730 Dilutive effect of stock options and Warrants -- 3,329,082 -- 3,444,524 ---------- ---------- ---------- ---------- Weighted average common and common equivalent shares outstanding - Diluted 25,624,921 25,253,744 24,612,447 24,256,254 Net Income Per Share Amount - Basic $ (0.14) $ 0.09 $ (0.33) $ 0.19 - Diluted $ (0.14) $ 0.07 $ (0.33) $ 0.16 23