EXHIBIT 12.1 AMERICAN EXPRESS CREDIT CORPORATION COMPUTATION IN SUPPORT OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions) Nine Months Ended September 30, Years Ended December 31, ------------------------- --------------------------------------------------------- 2005 2004 2004 2003 2002 2001 2000 ------------------------- --------------------------------------------------------- Earnings: Net income $ 291 $ 188 $ 234 $ 260 $ 228 $ 277 $ 286 Income tax provision 55 91 75 135 118 140 150 Interest expense 826 619 863 852 916 1,458 1,459 ------------------------- --------------------------------------------------------- Total earnings (a) $ 1,172 $ 898 $ 1,172 $ 1,247 $ 1,262 $ 1,875 $ 1,895 ========================= ========================================================= Fixed charges - interest expense (b) $ 826 $ 619 $ 863 $ 852 $ 916 $ 1,458 $ 1,459 ========================= ========================================================= Ratio of earnings to fixed charges (a/b) 1.42 1.45 1.36 1.46 1.38 1.29 1.30 Note: Gross rentals on long-term leases were minimal in amount in each of the periods shown.