Exhibit 11 - Computation of Earnings Per Common Share TCF FINANCIAL CORPORATION AND SUBSIDIARIES Computation of Earnings Per Common Share (Dollars in thousands, except per-share data) Computation of Basic Earnings Per Common Share for Statements of Operations: Year Ended December 31, - ---------------------------------------- ------------------------------------------------------- 1997 1996 1995 --------------- --------------- --------------- Income before extraordinary item $ 145,061 $ 100,377 $ 73,207 Less: Dividends on preferred stock - - 678 --------------- --------------- --------------- Income applicable to common stock before extraordinary item 145,061 100,377 72,529 Extraordinary item - - (963) --------------- --------------- --------------- Income applicable to common shareholders $ 145,061 $ 100,377 $ 71,566 --------------- --------------- --------------- --------------- --------------- --------------- Weighted average common shares outstanding 84,477,536 81,903,690 81,115,264 --------------- --------------- --------------- --------------- --------------- --------------- Basic earnings per common share: Income before extraordinary item $ 1.72 $ 1.23 $ .89 Extraordinary item - - (.01) --------------- --------------- --------------- Net income $ 1.72 $ 1.23 $ .88 --------------- --------------- --------------- --------------- --------------- --------------- Computation of Diluted Earnings Per Common Share for Statements of Operations: - ------------------------------------------ Income before extraordinary item $ 145,061 $ 100,377 $ 73,207 Add: Interest expense on 7 1/4% convertible subordinated debentures, net of tax 132 328 382 Less: Dividends on preferred stock - - 678 --------------- --------------- --------------- Income applicable to common stock before extraordinary item 145,193 100,705 72,911 Extraordinary item - - (963) --------------- --------------- --------------- Income applicable to common shareholders including effect of dilutive securities $ 145,193 $ 100,705 $ 71,948 --------------- --------------- --------------- --------------- --------------- --------------- Weighted average number of common shares outstanding adjusted for effect of dilutive securities: Weighted average common shares outstanding used in basic earnings per common share calculation 84,477,536 81,903,690 81,115,264 Net dilutive effect of: Stock option plans and common stock warrants 468,275 537,900 1,057,861 Restrictive stock plans 838,189 654,918 376,108 Assumed conversion of 7 1/4% convertible subordinated debentures 349,936 842,850 1,010,394 --------------- --------------- --------------- 86,133,936 83,939,358 83,559,627 --------------- --------------- --------------- --------------- --------------- --------------- Diluted earnings per common share: Income before extraordinary item $ 1.69 $ 1.20 $ .87 Extraordinary item - - (.01) --------------- --------------- --------------- Net income $ 1.69 $ 1.20 $ .86 --------------- --------------- --------------- --------------- --------------- ---------------