Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2012

Risk-Based Capital Amounts and Ratios for Northern Trust and for Each of its U.S. Subsidiary Banks Whose Net Income for 2012 or 2011 Exceeded 10% of Consolidated Total

The table below summarizes the risk-based capital amounts and ratios for Northern Trust and for each of its U.S. subsidiary banks whose net income for 2012 or 2011 exceeded 10% of the consolidated total.

	ACTUAL					MINIMUM TO QUALIFY AS WELL CAPITALIZED
($ In Millions)	AMOUNT		RATIO			AMOUNT		RATIO
AS OF DECEMBER 31, 2012
Total Capital to Risk-Weighted Assets
Consolidated	$	8,340.8		14.3	%	$	5,831.6		10.0	%
The Northern Trust Company		7,971.0		13.7			5,803.2		10.0
Tier 1 Capital to Risk-Weighted Assets
Consolidated		7,489.0		12.8			3,499.0		6.0
The Northern Trust Company		6,904.2		11.9			3,481.9		6.0
Tier 1 Capital to Adjusted Average Fourth Quarter Assets
Consolidated		7,489.0		8.2			4,543.7		5.0
The Northern Trust Company		6,904.2		7.6			4,533.9		5.0
AS OF DECEMBER 31, 2011
Total Capital to Risk-Weighted Assets
Consolidated	$	8,065.2		14.2	%	$	5,666.7		10.0	%
The Northern Trust Company		7,763.3		13.8			5,630.8		10.0
Tier 1 Capital to Risk-Weighted Assets
Consolidated		7,104.6		12.5			3,400.0		6.0
The Northern Trust Company		6,602.7		11.7			3,378.4		6.0
Tier 1 Capital to Adjusted Average Fourth Quarter Assets
Consolidated		7,104.6		7.3			4,864.9		5.0
The Northern Trust Company		6,602.7		6.8			4,852.2		5.0