Regulatory matters

12 Months Ended

Dec. 31, 2022

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Regulatory matters

24. Regulatory matters

Payment of dividends by M&T’s banking subsidiaries is restricted by various legal and regulatory limitations. Dividends from any banking subsidiary to M&T are limited by the amount of earnings of the banking subsidiary in the current year and the preceding two years. For purposes of this test, at December 31, 2022, approximately $1.07 billion was available for payment of dividends to M&T from banking subsidiaries. M&T may pay dividends and repurchase stock only in accordance with a capital plan that the Federal Reserve Board has not objected to.

Banking regulations prohibit extensions of credit by the subsidiary banks to M&T unless appropriately secured by assets. Securities of affiliates are not eligible as collateral for this purpose.

M&T and its subsidiary banks are required to comply with applicable capital adequacy regulations established by the federal banking agencies. Failure to meet minimum capital requirements can result in certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a material effect on the Company’s financial statements. Pursuant to the rules in effect as of December 31, 2022, the required minimum and well capitalized capital ratios are as follows:

				Well
	Minimum			Capitalized
M&T (Consolidated)
Common equity Tier 1 ("CET1") to risk-weighted assets		4.5	%
Tier 1 capital to risk-weighted assets		6.0	%		6.0	%
Total capital to risk-weighted assets		8.0	%		10.0	%
Leverage — Tier 1 capital to average total assets, as defined		4.0	%
				Well
	Minimum			Capitalized
Bank Subsidiaries
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 regulations require buffers in addition to the minimum risk-based capital ratios noted above. M&T is subject to a stress capital buffer requirement that is determined through the Federal Reserve’s supervisory stress tests and M&T’s bank subsidiaries are subject to a 2.5% capital conservation buffer requirement. The buffer requirement must be composed entirely of CET1 and for each entity was 2.5% of risk-weighted assets through September 30, 2022. In June 2022, the Federal Reserve released the results of its most recent supervisory stress tests. Based on those results, on October 1, 2022, M&T's stress capital buffer of 4.7% became effective.

The capital ratios and amounts of the Company and its banking subsidiaries as of December 31, 2022 and 2021 are presented below:

	M&T (Consolidated)			M&T Bank			Wilmington Trust, N.A.
	(Dollars in thousands)
December 31, 2022:
CET1 capital
Amount	$	15,562,037		$	16,673,578		$	585,968
Ratio(a)		10.44	%		11.23	%		254.50	%
Tier 1 capital
Amount		17,572,586			16,673,578			585,968
Ratio(a)		11.79	%		11.23	%		254.50	%
Total capital
Amount		20,259,735			18,887,691			586,879
Ratio(a)		13.60	%		12.72	%		254.90	%
Leverage
Amount		17,572,586			16,673,578			585,968
Ratio(b)		9.23	%		8.77	%		85.73	%
December 31, 2021:
CET1 capital
Amount	$	11,844,833		$	12,378,354		$	779,521
Ratio(a)		11.42	%		11.98	%		31.22	%
Tier 1 capital
Amount		13,594,782			12,378,354			779,521
Ratio(a)		13.11	%		11.98	%		31.22	%
Total capital
Amount		15,902,833			14,170,434			780,791
Ratio(a)		15.33	%		13.71	%		31.27	%
Leverage
Amount		13,594,782			12,378,354			779,521
Ratio(b)		8.87	%		8.11	%		6.23	%

(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.