AutoZone (AZO) 10-Q 2007 Q2 Quarterly report

Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges
(unaudited)
(in thousands, except ratios)
	Twenty-Four Weeks Ended
	February 10,			February 11,
	2007			2006
Earnings
Income before income taxes	$	358,008		$	335,566
Fixed charges		75,894			69,843
Less: Capitalized interest		(660	)		(913	)
Adjusted earnings	$	433,242		$	404,496
Fixed charges
Gross interest expense	$	54,983		$	49,195
Amortization of debt expense		810			731
Interest portion of rent expense		20,101			19,917
Total fixed charges	$	75,894		$	69,843
Ratio of earnings to fixed charges		5.7			5.8

	Fiscal Year Ended August
	2006			2005			2004			2003			2002
	(52 weeks)			(52 weeks)			(52 weeks)			(52 weeks)			(53 weeks)
Earnings
Income before income taxes	$	902,036		$	873,221		$	905,902		$	833,007		$	691,148
Fixed charges		156,976			144,930			130,278			121,129			98,688
Less: Capitalized interest		(1,985	)		(1,079	)		(813	)		(791	)		(437	)
Adjusted earnings	$	1,057,027		$	1,017,072		$	1,035,367		$	953,345		$	789,399
Fixed charges
Gross interest expense	$	110,568		$	102,341		$	89,600		$	79,301		$	78,183
Amortization of debt expense		1,559			2,343			4,230			7,334			2,283
Interest portion of rent expense		44,849			40,246			36,448			34,494			18,222
Total fixed charges	$	156,976		$	144,930		$	130,278		$	121,129		$	98,688
Ratio of earnings to fixed charges		6.7			7.0			7.9			7.9			8.0