United Rentals (URI) S-3ASR Automatic shelf registration

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Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
(In millions, except ratios)

	Year Ended December 31,													Nine Months Ended September 30, 2011
	2006		2007		2008			2009			2010
Earnings:
Income (loss) from continuing operations before provision (benefit) for income taxes		405		578		(813	)		(107	)		(63	)		108
Add:
Fixed charges, net of capitalized interest		289		251		277			288			279			203
Total earnings available for fixed charges		694		829		(536	)		181			216			311
Fixed charges(1):
Interest expense, net		208		187		174			226			255			170
Add back interest income, which is netted in interest expense		11		6		6			1			1			1
Add back gains (losses) on bond repurchases/retirement of subordinated convertible debentures, included in interest expense		—		—		41			20			(28	)		(1	)
Interest expense—subordinated convertible debentures, net		13		9		9			(4	)		8			5
Capitalized interest		1		2		1			1			—			—
Interest component of rent expense		53		49		47			45			43			28
Interest expense—discontinued operation		4		—		—			—			—			—
Fixed charges		290		253		278			289			279			203
Ratio of earnings to fixed charges		2.4x		3.3x		—	(2)(3)		—	(2)		—	(2)		1.5x

(1)

Fixed charges consist of interest expense, which includes amortization of deferred finance charges, interest expense-subordinated debentures, capitalized interest and imputed interest on our lease obligations. The interest component of rent is determined based on an estimate of a reasonable interest factor at the inception of the leases.

(2)

Due to our losses for the years ended December 31, 2010, 2009 and 2008, the ratio coverage was less than 1:1 for these periods. We would have had to have generated additional earnings of $63, $108, and $814 for the years ended December 31, 2010, 2009 and 2008, respectively, to have achieved coverage ratios of 1:1.

(3)

The loss for the year ended December 31, 2008 includes the effect of an $1,147 pretax non-cash goodwill impairment charge. The effect of this charge was to reduce the ratio of earnings to fixed charges. Had this charge been excluded from the calculation, the ratio of earnings to fixed charges would have been 2.2x for the year ended December 31, 2008.

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Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In millions, except ratios)