Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Actual Capital Amount and Ratio

The actual capital amounts and ratios for the Banks and Company are presented in the following table:

					Risk-		Tangible		Total			Tier 1			Tier 1
	Total		Tier 1		Weighted		Average		Capital			Capital			Leverage
	Capital		Capital		Assets		Assets		Ratio			Ratio			Ratio
	(dollars in thousands)
December 31, 2012
WAL (Consolidated)	$	856,199	$	768,687	$	6,797,392	$	7,576,101		12.6	%		11.3	%		10.1	%
Bank of Nevada		371,164		338,404		2,534,301		2,994,626		14.7	%		13.3	%		11.3	%
Western Alliance Bank		258,930		218,716		2,382,971		2,538,356		10.9	%		9.2	%		8.6	%
Torrey Pines Bank		196,677		165,403		1,826,740		1,930,808		10.8	%		9.1	%		8.6	%
Well-capitalized ratios										10.0	%		6.0	%		5.0	%
Minimum capital ratios										8.0	%		4.0	%		4.0	%
December 31, 2011
WAL (Consolidated)	$	723,327	$	651,104	$	5,749,818	$	6,636,083		12.6	%		11.3	%		9.8	%
Bank of Nevada		294,747		266,430		2,232,208		2,818,077		13.2	%		11.9	%		9.5	%
Western Alliance Bank		231,360		188,328		1,944,738		2,128,033		11.9	%		9.7	%		8.9	%
Torrey Pines Bank		183,772		151,058		1,541,878		1,641,500		11.9	%		9.8	%		9.2	%
Well-capitalized ratios										10.0	%		6.0	%		5.0	%
Minimum capital ratios										8.0	%		4.0	%		4.0	%