Regulatory matters (Tables)

12 Months Ended

Dec. 31, 2016

Banking And Thrift [Abstract]

Summary of Required Minimum and Well Capitalized Capital Ratios

Pursuant to the rules in effect as of December 31, 2016, the required minimum and well capitalized capital ratios are as follows:

				Well
	Minimum			Capitalized
●   Common equity Tier 1 ("CET1") to risk-weighted assets		4.5	%		6.5	%
●   Tier 1 capital to risk-weighted assets		6.0	%		8.0	%
●   Total capital to risk-weighted assets		8.0	%		10.0	%
●   Leverage — Tier 1 capital to average total assets, as defined		4.0	%		5.0	%

Capital Ratios and Amounts of Company and its Banking Subsidiaries

The capital ratios and amounts of the Company and its banking subsidiaries as of December 31, 2016 and 2015 are presented below:

	M&T (Consolidated)			M&T Bank			Wilmington Trust, N.A.
	(Dollars in thousands)
December 31, 2016:
Common equity Tier 1 capital
Amount	$	10,849,642		$	10,115,688		$	496,801
Ratio(a)		10.70	%		10.02	%		57.08	%
Minimum required amount(b)		5,195,288			5,175,310			44,607
Tier 1 capital
Amount		12,083,948			10,115,688			496,801
Ratio(a)		11.92	%		10.02	%		57.08	%
Minimum required amount(b)		6,715,859			6,690,035			57,662
Total capital
Amount		14,282,492			11,812,114			501,111
Ratio(a)		14.09	%		11.70	%		57.57	%
Minimum required amount(b)		8,743,289			8,709,668			75,070
Leverage
Amount		12,083,948			10,115,688			496,801
Ratio(c)		9.99	%		8.41	%		15.31	%
Minimum required amount(b)		4,836,901			4,812,685			129,774
December 31, 2015:
Common equity Tier 1 capital
Amount	$	10,485,426		$	10,680,827		$	476,106
Ratio(a)		11.08	%		11.33	%		86.87	%
Minimum required amount(b)		4,259,977			4,242,817			24,664
Tier 1 capital
Amount		12,008,232			10,680,827			476,106
Ratio(a)		12.68	%		11.33	%		86.87	%
Minimum required amount(b)		5,679,969			5,657,089			32,886
Total capital
Amount		14,128,454			12,589,917			480,415
Ratio(a)		14.92	%		13.35	%		87.65	%
Minimum required amount(b)		7,573,292			7,542,786			43,848
Leverage
Amount		12,008,232			10,680,827			476,106
Ratio(c)		10.89	%		9.75	%		22.38	%
Minimum required amount(b)		4,408,971			4,381,617			85,082

(a) The ratio of capital to risk-weighted assets, as defined by regulation.

(b) Minimum amount of capital to be considered adequately capitalized, as defined by regulation and including transition portion of the capital conservation buffer for 2016.

(c) The ratio of capital to average assets, as defined by regulation.