Regulatory Capital Requirements (Tables)
 12 Months Ended
Mar. 31, 2022
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
Risk-adjusted Capital Amounts and Ratios The risk-adjusted capital amounts and ratios, and leverage ratios, of MUFG, MUFG Bank and Mitsubishi UFJ Trust and Banking presented in the following table are based on amounts calculated in accordance with Japanese GAAP as required by the FSA.
 
Actual
 
For capital
 adequacy purposes
 Amount
Ratio
 Amount
Ratio
 
(in millions, except percentages)
Consolidated:       
At March 31, 2021:       
Total capital (to risk-weighted assets):       
MUFG(1)
¥18,669,510 16.31 %¥13,730,324 12.00 %
BK14,630,44315.04 7,779,1478.00 
TB2,099,66222.47 747,5248.00 
Tier 1 capital (to risk-weighted assets):
MUFG(1)
15,982,74613.96 11,441,93710.00 
BK12,411,35212.76 5,834,3606.00 
TB1,870,98820.02 560,6436.00 
Common Equity Tier 1 capital (to risk-weighted assets):
MUFG(1)
14,113,72212.33 9,725,6468.50 
BK10,865,30211.17 4,375,7704.50 
TB1,681,14017.99 420,4824.50 
Leverage ratio:
MUFG15,982,7465.45 8,781,7533.00 
BK12,411,3525.22 7,123,3963.00 
TB1,870,9887.53 744,7443.00 
At March 31, 2022:       
Total capital (to risk-weighted assets):       
MUFG(1)
¥17,858,656 14.29 %¥15,002,201 12.01 %
BK14,076,87712.94 8,700,2268.00 
TB1,969,28220.78 758,0738.00 
Tier 1 capital (to risk-weighted assets):
MUFG(1)
15,476,28712.38 12,503,91610.01 
BK12,092,18911.11 6,525,1706.00 
TB1,803,30619.03 568,5556.00 
Common Equity Tier 1 capital (to risk-weighted assets):
MUFG(1)
13,823,91211.06 10,630,2038.51 
BK10,728,5879.86 4,893,8774.50 
TB1,640,45817.31 426,4164.50 
Leverage ratio:
MUFG15,476,2875.14 9,023,7703.00 
BK12,092,1894.96 7,312,6723.00 
TB1,803,3066.77 798,8553.00 
ActualFor capital
 adequacy purposes
Amount
Ratio
Amount
Ratio
(in millions, except percentages)
Stand-alone:
At March 31, 2021:
Total capital (to risk-weighted assets):
BK¥12,359,493 14.60 %¥6,770,631 8.00 %
TB2,294,69421.91 837,5678.00 
Tier 1 capital (to risk-weighted assets):
BK10,512,40512.42 5,077,9746.00 
TB2,066,48019.73 628,1766.00 
Common Equity Tier 1 capital (to risk-weighted assets):
BK9,025,27210.66 3,808,4804.50 
TB1,876,98017.92 471,1324.50 
Leverage ratio:
BK10,512,4055.14 6,127,5213.00 
TB2,066,4808.95 691,9143.00 
At March 31, 2022:
Total capital (to risk-weighted assets):
BK¥11,167,553 11.91 %¥7,498,348 8.00 %
TB2,122,84019.97 850,0308.00 
Tier 1 capital (to risk-weighted assets):
BK9,565,79210.20 5,623,7616.00 
TB1,957,34018.42 637,5236.00 
Common Equity Tier 1 capital (to risk-weighted assets):
BK8,261,6598.81 4,217,8214.50 
TB1,794,84016.89 478,1424.50 
Leverage ratio:
BK9,565,7924.59 6,249,6063.00 
TB1,957,3407.81 751,3023.00 
Note:
(1)Effective March 31, 2016, the FSA’s capital conservation buffer, countercyclical buffer and G-SIB surcharge requirements became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 4.50% minimum Common Equity Tier 1 capital ratio, MUFG is required to maintain a capital conservation buffer of 2.5% and a G-SIB surcharge of 1.5% as of March 31, 2021 and 2022, and the countercyclical buffer of 0.00% and 0.01% as of March 31, 2021 and 2022, respectively.
The figures on the table below are calculated according to U.S. Basel III as of December 31, 2020 and 2021. MUFG Americas Holdings’s actual capital amounts and ratios are presented as follows:
 
Actual
 
Minimum capital
 ratios required(1)
 Amount
Ratio
 Amount
Ratio
 
(in millions, except percentages)
MUAH:       
At December 31, 2020:       
Total capital (to risk-weighted assets)$16,871 16.29 %$12,843 12.40 %
Tier 1 capital (to risk-weighted assets)15,82315.28 10,77210.40 %
Tier 1 capital (to quarterly average assets)(2)
15,8239.56 6,6234.00 %
Common Equity Tier 1 capital (to risk-weighted assets)15,82315.28 9,2188.90 %
At December 31, 2021:
Total capital (to risk-weighted assets)$17,177 16.32 %$11,890 11.30 %
Tier 1 capital (to risk-weighted assets)16,84316.01 9,7869.30 %
Tier 1 capital (to quarterly average assets)(2)
16,84310.44 6,4534.00 %
Common Equity Tier 1 capital (to risk-weighted assets)16,84316.01 8,2087.80 %
Notes:
(1)The minimum capital requirement includes a capital conservation buffer of 4.4% at December 31, 2020 and 3.3% at December 31, 2021.
(2)Excludes certain deductions.

The figures on the table below are calculated according to U.S. Basel III as of December 31, 2020 and 2021. MUFG Union Bank’s actual capital amounts and ratios are presented as follows:
 
Actual
 
Minimum capital
 ratios required(1)
 
Ratios OCC
 requires to be
 “well capitalized”
 Amount
Ratio
 Amount
Ratio
 Amount
Ratio
 
(in millions, except percentages)
BK(US):           
At December 31, 2020:           
Total capital (to risk-weighted assets)$15,629 16.68 %$9,836 10.50 %$9,368 10.00 %
Tier 1 capital (to risk-weighted assets)14,63415.62 7,9638.50 7,4948.00 
Tier 1 capital (to quarterly average assets)(2)
14,63411.12 5,2624.00 6,5775.00 
Common Equity Tier 1 capital (to risk-weighted assets)14,63415.62 6,5577.00 6,0896.50 
At December 31, 2021:
Total capital (to risk-weighted assets)$16,265 17.36 %$9,840 10.50 %$9,371 10.00 %
Tier 1 capital (to risk-weighted assets)15,62916.68 7,9668.50 7,4978.00 
Tier 1 capital (to quarterly average assets)(2)
15,62912.14 5,1494.00 6,4365.00 
Common Equity Tier 1 capital (to risk-weighted assets)15,62916.68 6,5607.00 6,0916.50 
Notes:
(1)Beginning January 1, 2019, the minimum capital requirement includes a capital conservation buffer of 2.5%.
(2)Excludes certain deductions.