QuickLinks -- Click here to rapidly navigate through this document

Exhibit 12

CBS CORPORATION AND SUBSIDIARIES
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND
RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS
(Tabular dollars in millions except ratios)

		Nine Months Ended September 30,					Twelve Months Ended December 31,
		2008			2007		2007		2006		2005			2004			2003
Earnings (loss) from continuing operations before income taxes, equity in earnings (loss) of investee companies and minority interest		$	(12,742.1	)	$	1,587.6	$	2,133.0	$	2,132.7	$	(7,564.4	)	$	(15,850.2	)	$	1,788.2
Add:
	Distributions from investee companies		5.8			4.9		7.7		8.9		9.5			12.6			1.7
	Interest expense, net of capitalized interest		407.5			426.4		570.1		564.5		719.6			693.7			715.0
	1/3 of rental expense		157.9			138.8		193.4		160.9		137.2			123.8			95.1
Total Earnings (loss)		$	(12,170.9	)	$	2,157.7	$	2,904.2	$	2,867.0	$	(6,698.1	)	$	(15,020.1	)	$	2,600.0
Fixed charges:
	Interest expense, net of capitalized interest	$	407.5		$	426.4	$	570.1	$	564.5	$	719.6		$	693.7		$	715.0
	1/3 of rental expense		157.9			138.8		193.4		160.9		137.2			123.8			95.1
Total fixed charges
	requirements	$	565.4		$	565.2	$	763.5	$	725.4	$	856.8		$	817.5		$	810.1
Ratio of earnings to fixed charges			Note a			3.8x		3.8x		4.0x		Note a			Note a			3.2x

Note:

(a) Earnings are inadequate to cover fixed charges by $12.74 billion in 2008, $7.55 billion in 2005 and $15.84 billion in 2004 due to the non-cash impairment charges of $14.12 billion in 2008, $9.48 billion in 2005 and $18.0 billion in 2004.

QuickLinks

Exhibit 12