Regulatory matters (Tables)

12 Months Ended

Dec. 31, 2020

Regulatory Capital Requirements [Abstract]

Summary of Required Minimum and Well Capitalized Capital Ratios

Pursuant to the rules in effect as of December 31, 2020, 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, 2020 and 2019 are presented below:

	M&T (Consolidated)			M&T Bank			Wilmington Trust, N.A.
	(Dollars in thousands)
December 31, 2020:
Common equity Tier 1 capital
Amount	$	10,623,368		$	11,550,462		$	630,574
Ratio(a)		10.00	%		10.90	%		46.57	%
Tier 1 capital
Amount		11,873,317			11,550,462			630,574
Ratio(a)		11.17	%		10.90	%		46.57	%
Total capital
Amount		14,207,937			13,373,416			632,506
Ratio(a)		13.37	%		12.62	%		46.72	%
Leverage
Amount		11,873,317			11,550,462			630,574
Ratio(b)		8.48	%		8.27	%		10.73	%
December 31, 2019:
Common equity Tier 1 capital
Amount	$	10,053,887		$	10,649,953		$	606,538
Ratio(a)		9.73	%		10.34	%		56.35	%
Tier 1 capital
Amount		11,303,836			10,649,953			606,538
Ratio(a)		10.94	%		10.34	%		56.35	%
Total capital
Amount		13,480,612			12,342,834			608,130
Ratio(a)		13.05	%		11.99	%		56.50	%
Leverage
Amount		11,303,836			10,649,953			606,538
Ratio(b)		9.59	%		9.08	%		13.12	%

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

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