Exhibit 12.1

AMKOR TECHNOLOGY, INC.

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Nine Months Ended September 30,			Year Ended December 31,
	2012			2011			2010			2009			2008			2007
Earnings
Income (loss) before income taxes	$	44,039		$	100,219		$	251,159		$	126,523		$	(425,688	)	$	234,837
Equity in earnings of unconsolidated affiliate		(5,421	)		(7,085	)		(6,435	)		(2,373	)		—			—
Income (loss) before income taxes and equity in earnings of unconsolidated affiliate		38,618			93,134			244,724			124,150			(425,688	)		234,837
Interest expense		68,470			82,869			96,340			110,747			120,513			134,819
Amortization of debt issuance costs		2,734			3,737			4,505			4,649			4,466			5,326
Interest portion of rent (1)		3,255			5,020			5,450			5,879			6,559			6,452
	$	113,077		$	184,760		$	351,019		$	245,425		$	(294,150	)	$	381,434
Fixed Charges
Interest expense	$	68,470		$	82,869		$	96,340		$	110,747		$	120,513		$	134,819
Amortization of debt issuance costs		2,734			3,737			4,505			4,649			4,466			5,326
Interest portion of rent (1)		3,255			5,020			5,450			5,879			6,559			6,452
	$	74,459		$	91,626		$	106,295		$	121,275		$	131,538		$	146,597
Ratio of earnings to fixed charges (2)		1.5			2.0			3.3			2.0			—			2.6

(1) Represents one-third of total rent expense which we believe is a reasonable estimate of the interest component of rent expense.

(2) The ratio of earnings to fixed charges was less than 1:1 for 2008. In order to achieve a ratio of earnings to fixed charges of 1:1, we would have had to generate an additional $425.7 million of earnings in 2008.