Exhibit 12.1

TransUnion Corp.

Computation of Ratio of Earnings to Fixed Charges

(unaudited)

(dollars in millions)	2010			2009			2008			2007			2006
Earnings:
Income from continuing operations before tax		83.0			205.7			209.9			282.0			285.4
Less income of noncontrolling interests		(8.3	)		(8.1	)		(9.2	)		(7.5	)		(6.9	)
Less income from equity investees		(8.4	)		(5.3	)		(6.6	)		(2.4	)		(3.8	)
Plus fixed charges		93.1			4.3			0.9			1.2			1.7
Plus amortization of capitalized interest		-			-			-			-			-
Dividends from equity method investees		4.9			4.1			4.4			3.2			2.6
Less interest capitalized		(0.3	)		-			-			-			-
Total earnings		164.0			200.7			199.4			276.5			279.0
Fixed Charges:
Interest Expense		90.1			4.0			0.9			1.2			1.7
Interest capitalized (on internally developed software)		0.3			-			-			-			-
Amortized loan costs not recorded as interest expense		2.7			0.3			-			-			-
Estimate of interest expense within rental expense		-			-			-			-			-
Total fixed charges		93.1			4.3			0.9			1.2			1.7
Ratio of earnings to fixed charges		1.8			46.7			221.6			230.4			164.1