Regulatory Requirements and Restrictions (Tables)

12 Months Ended

Dec. 31, 2020

Banking and Thrift, Interest [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table presents capital ratios and related information in accordance with Basel 3 Standardized and Advanced approaches as measured at December 31, 2020 and 2019 for the Corporation and BANA.

Regulatory Capital under Basel 3
	Bank of America Corporation								Bank of America, N.A.
	Standardized Approach (1, 2)			Advanced Approaches (1)			Regulatory Minimum (3)		Standardized Approach (1, 2)			Advanced Approaches (1)			Regulatory Minimum (4)
(Dollars in millions, except as noted)	December 31, 2020
Risk-based capital metrics:
Common equity tier 1 capital	$	176,660		$	176,660				$	164,593		$	164,593
Tier 1 capital	200,096			200,096					164,593			164,593
Total capital (5)	237,936			227,685					181,370			170,922
Risk-weighted assets (in billions)	1,480			1,371					1,221			1,014
Common equity tier 1 capital ratio	11.9		%	12.9		%	9.5	%	13.5		%	16.2		%	7.0	%
Tier 1 capital ratio	13.5			14.6			11.0		13.5			16.2			8.5
Total capital ratio	16.1			16.6			13.0		14.9			16.9			10.5
Leverage-based metrics:
Adjusted quarterly average assets (in billions) (6)	$	2,719		$	2,719				$	2,143		$	2,143
Tier 1 leverage ratio	7.4		%	7.4		%	4.0		7.7		%	7.7		%	5.0
Supplementary leverage exposure (in billions) (7)				$	2,786							$	2,525
Supplementary leverage ratio				7.2		%	5.0					6.5		%	6.0
	December 31, 2019
Risk-based capital metrics:
Common equity tier 1 capital	$	166,760		$	166,760				$	154,626		$	154,626
Tier 1 capital	188,492			188,492					154,626			154,626
Total capital (5)	221,230			213,098					166,567			158,665
Risk-weighted assets (in billions)	1,493			1,447					1,241			991
Common equity tier 1 capital ratio	11.2		%	11.5		%	9.5	%	12.5		%	15.6		%	7.0	%
Tier 1 capital ratio	12.6			13.0			11.0		12.5			15.6			8.5
Total capital ratio	14.8			14.7			13.0		13.4			16.0			10.5
Leverage-based metrics:
Adjusted quarterly average assets (in billions) (6)	$	2,374		$	2,374				$	1,780		$	1,780
Tier 1 leverage ratio	7.9		%	7.9		%	4.0		8.7		%	8.7		%	5.0
Supplementary leverage exposure (in billions)				$	2,946							$	2,177
Supplementary leverage ratio				6.4		%	5.0					7.1		%	6.0

(1)As of December 31, 2020, capital ratios are calculated using the regulatory capital rule that allows a five-year transition period related to the adoption of CECL.

(2)Derivative exposure amounts are calculated using the standardized approach for measuring counterparty credit risk at December 31, 2020 and the current exposure method at December 31, 2019.

(3)The capital conservation buffer and global systemically important bank surcharge were 2.5 percent at both December 31, 2020 and 2019. At December 31, 2020, the Corporation's stress capital buffer of 2.5 percent was applied in place of the capital conservation buffer under the Standardized approach. The countercyclical capital buffer for both periods was zero. The SLR minimum includes a leverage buffer of 2.0 percent.

(4)Risk-based capital regulatory minimums at December 31, 2020 and 2019 are the minimum ratios under Basel 3, including a capital conservation buffer of 2.5 percent. The regulatory minimums for the leverage ratios as of both period ends are the percent required to be considered well capitalized under the PCA framework.

(5)Total capital under the Advanced approaches differs from the Standardized approach due to differences in the amount permitted in Tier 2 capital related to the qualifying allowance for credit losses.

(6)Reflects total average assets adjusted for certain Tier 1 capital deductions.

(7)Supplementary leverage exposure for the Corporation at December 31, 2020 reflects the temporary exclusion of U.S. Treasury securities and deposits at Federal Reserve Banks.