EXHIBIT 12.1 AMKOR TECHNOLOGY, INC. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (IN THOUSANDS EXCEPT RATIO DATA) NINE MONTHS YEAR ENDED DECEMBER 31, ENDED ------------------------------------------------------------------- SEPTEMBER 30, 1996 1997 1998 1999 2000 2001 --------- --------- --------- --------- --------- --------- Earnings Income before income taxes and equity in income (loss) of investees .......... $ 43,012 $ 61,006 $ 100,735 $ 105,288 $ 197,429 $(292,003) Interest expense ....................... 27,716 37,993 25,860 61,803 127,027 115,178 Amortization of debt issuance costs .... -- -- 1,217 3,466 7,013 16,446 Interest portion of rent ............... 1,822 2,236 2,584 3,481 4,567 6,154 Less (earnings) loss of affiliates ..... (661) (512) -- 2,622 -- -- --------- --------- --------- --------- --------- --------- $ 71,889 $ 100,723 $ 130,396 $ 176,660 $ 336,036 $(154,225) ========= ========= ========= ========= ========= ========= Fixed Charges Interest expense ....................... 27,716 37,993 25,860 61,803 127,027 115,178 Amortization of debt issuance costs .... -- -- 1,217 3,466 7,013 16,446 Interest portion of rent ............... 1,822 2,236 2,584 3,481 4,567 6,154 --------- --------- --------- --------- --------- --------- $ 29,538 $ 40,229 $ 29,661 $ 68,750 $ 138,607 $ 137,778 ========= ========= ========= ========= ========= ========= Ratio of earnings to fixed charges ........ 2.4x 2.5x 4.4x 2.6x 2.4x --x(1) ========= ========= ========= ========= ========= ========= 1 The ratio of earnings to fixed charges was less than 1:1 for the nine months ended September 30, 2001. In order to achieve a ratio of earnings to fixed charges of 1:1, we would have had to generate an additional $292.0 million of earnings in the nine months ended September 30, 2001.