EXHIBIT 12.1 ONBANCORP, INC. AND SUBSIDIARIES Computation of Earnings to Fixed Charges For the Three For the Year Ended December 31, Months Ended --------------------------------------------------------------- (Dollars in thousands) March 31, 1997 1996 1995 1994 1993 1992 - ---------------------- ----------------------------------------------------------------------------------- (unaudited) EXCLUDING INTEREST ON DEPOSITS Income before income taxes and cumulative effect of accounting change $ 19,335 70,582 71,564 3,412 93,670 70,686 Fixed Charges 15,142 68,634 122,726 113,156 74,388 44,356 ---------- --------- --------- --------- --------- --------- (A.) Earnings $ 34,477 139,216 194,290 116,568 168,058 115,042 ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- --------- Interest excluding interest on deposits $ 14,804 67,351 121,529 111,979 73,239 43,940 One-third of rental expense for operating leases 338 1,283 1,197 1,177 1,149 416 ---------- --------- --------- --------- --------- --------- (B.) Fixed charges $ 15,142 68,634 122,726 113,156 74,388 44,356 ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- --------- Ratio of earnings to fixed charges, excluding interest on deposits (A./B.) 2.28 x 2.03 x 1.58 x 1.03 x 2.26 x 2.59 x ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- --------- INCLUDING INTEREST ON DEPOSITS Income before income taxes and cumulative effect of accounting change $ 19,335 70,582 71,564 3,412 93,670 70,686 Fixed charges 54,679 223,381 280,141 225,823 172,204 141,769 ---------- --------- --------- --------- --------- --------- (C.) Earnings $ 74,014 293,963 351,705 229,235 265,874 212,455 ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- --------- Interest, including interest on deposits $ 54,341 222,098 278,944 224,646 171,055 141,353 One-third of rental expense for operating leases. 338 1,283 1,197 1,177 1,149 416 ---------- --------- --------- --------- --------- --------- (D.) Fixed charges $ 54,679 223,381 280,141 225,823 172,204 141,769 ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- --------- Ratio of earnings to fixed charges, including interest on deposits (C./D.) 1.35 x 1.32 x 1.26 x 1.02 x 1.54 x 1.50 x ---------- --------- --------- --------- --------- --------- ---------- --------- --------- --------- --------- ---------