EXHIBIT 12.1 AMKOR TECHNOLOGY, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (IN THOUSANDS EXCEPT RATIO DATA) THREE MONTHS YEAR ENDED DECEMBER 31, ENDED ------------------------------------------------------------- MARCH 31, 1997 1998 1999 2000 2001 2002 ---------- --------- --------- --------- ---------- ------------ Earnings Income (loss) before income taxes, equity in income (loss) of investees and minority interest ... $ 61,006 $ 100,735 $ 105,288 $ 197,429 $(429,950) $(109,918) Interest expense .................... 37,993 25,860 61,803 127,027 152,067 35,096 Amortization of debt issuance costs . -- 1,217 3,466 7,013 22,321 2,057 Interest portion of rent ............ 2,236 2,584 3,481 4,567 7,282 1,325 Less (earnings) loss of affiliates .. (512) -- 2,622 -- -- -- --------- --------- --------- --------- --------- --------- $ 100,723 $ 130,396 $ 176,660 $ 336,036 $(248,280) $ (71,440) ========= ========= ========= ========= ========= ========= Fixed Charges Interest expense .................... 37,993 25,860 61,803 127,027 152,067 35,096 Amortization of debt issuance costs . -- 1,217 3,466 7,013 22,321 2,057 Interest portion of rent ............ 2,236 2,584 3,481 4,567 7,282 1,325 --------- --------- --------- --------- --------- --------- $ 40,229 $ 29,661 $ 68,750 $ 138,607 $ 181,670 $ 38,478 ========= ========= ========= ========= ========= ========= Ratio of earnings to fixed charges ..... 2.5x 4.4x 2.6x 2.4x --x(1) --x(1) ========= ========= ========= ========= ========= ========= (1) The ratio of earnings to fixed charges was less than 1:1 for the three months ended March 31, 2002. In order to achieve a ratio of earnings to fixed charges of 1:1, we would have had to generate an additional $109.9 million of earnings in the three months ended March 31, 2002. The ratio of earnings to fixed charges was less than 1:1 for the year ended December 31, 2001. In order to achieve a ratio of earnings to fixed charges of 1:1, we would have had to generate an additional $430.0 million of earnings in the year ended December 31, 2001. 29