EXHIBIT 12.2 JEFFERSON SMURFIT CORPORATION (U.S.) CALCULATION OF HISTORICAL RATIOS OF EARNINGS TO FIXED CHARGES YEAR ENDED DECEMBER 31, ------------------------------------- 1997 1996 1995 1994 1993 ---- ---- ---- ---- ----- (DOLLAR AMOUNTS IN MILLIONS) Income (loss) before income taxes, extraordinary item and cumulative effect of accounting changes........................................ $ 12 $194 $403 $ 28 $(258) Add (deduct): Minority interest share of income (loss)......................... (1) (3) Interest expense(a).............................................. 190 194 234 269 254 Interest component of rental expense............................. 15 13 12 11 12 ---- ---- ---- ---- ----- Earnings available for fixed charges.................................. $217 $401 $651 $307 $ 5 ---- ---- ---- ---- ----- ---- ---- ---- ---- ----- Fixed charges: Interest expense(a).............................................. $190 $194 $234 $269 $ 254 Capitalized interest............................................. 5 3 4 4 3 Interest component of rental expense............................. 15 13 12 11 12 ---- ---- ---- ---- ----- Total fixed charges......................................... $210 $210 $250 $284 $ 269 ---- ---- ---- ---- ----- ---- ---- ---- ---- ----- Ratio of earnings to fixed charges.................................... 1.03 1.91 2.60 1.08 (b) ---- ---- ---- ---- ----- ---- ---- ---- ---- ----- - ------------ (a) For the years ended December 31, 1997, 1996, 1995, 1994 and 1993, interest expense includes amortization of deferred debt issuance costs of $11 million, $13 million, $14 million, $10 million and $8 million, respectively. (b) For the year ended December 31, 1993, earnings were inadequate to cover fixed charges by $264 million.