Exhibit 12.1 CLARK REFINING & MARKETING, INC. AND SUBSIDIARY CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in thousands) YEAR ENDED DECEMBER 31, ------------------------------------------------------- 1991 1992 1993 1994 1995 -------- ------- ------- -------- --------- EARNINGS AVAILABLE FOR FIXED CHARGES Pretax earnings $ 59,287 $ 2,949 $ 855 $27,806 $(41,200) Fixed charges (a) 40,584 45,403 40,429 42,281 49,423 Other (b) 1,254 182 197 (468) (1,413) -------- ------- ------- -------- --------- $101,125 $48,534 $41,481 $69,619 $ 6,810 ======== ======= ======= ======== ========= FIXED CHARGES Gross interest expense (c) $ 41,581 $49,277 $42,072 $42,157 $ 47,394 Interest factor attributable to rent expense 1,124 1,234 1,133 2,533 3,433 -------- ------- ------- -------- --------- $ 42,705 $50,511 $43,205 $44,690 $ 50,827 ======== ======= ======= ======== ========= RATIO OF EARNINGS TO FIXED CHARGES 2.37x 0.96x 0.96x 1.56x 0.13x ======== ======= ======= ======== ========= (a) As adjusted for capitalized interest (b) Represents the total of adjustments to recognize only distributed earnings for less than 50% owned companies accounted for under the equity method (c) Represents interest expense on long-term and short-term debt and amortization of debt discount and debt issue costs