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Regulatory Capital Requirements (Tables)
 12 Months Ended
Mar. 31, 2024
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, 2023:       
Total capital (to risk-weighted assets):       
MUFG(1)
¥17,166,109 13.91 %¥14,852,953 12.04 %
BK14,207,818 12.58 9,029,639 8.00 
TB2,041,563 20.67 790,026 8.00 
Tier 1 capital (to risk-weighted assets):
MUFG(1)
14,863,717 12.04 12,385,685 10.04 
BK12,469,254 11.04 6,772,229 6.00 
TB1,770,924 17.93 592,519 6.00 
Common Equity Tier 1 capital (to risk-weighted assets):
MUFG(1)
13,280,842 10.76 10,535,234 8.54 
BK11,172,146 9.89 5,079,172 4.50 
TB1,620,889 16.41 444,389 4.50 
Leverage ratio:
MUFG(2)
14,863,717 4.70 11,851,297 3.75 
BK12,469,254 4.75 7,867,085 3.00 
TB1,770,924 7.29 728,488 3.00 
At March 31, 2024:       
Total capital (to risk-weighted assets):       
MUFG(1)
¥19,817,830 17.82 %¥13,517,077 12.16 %
BK15,915,058 18.11 7,026,643 8.00 
TB2,121,699 20.42 830,995 8.00 
Tier 1 capital (to risk-weighted assets):
MUFG(1)
17,479,730 15.72 11,293,874 10.16 
BK14,153,613 16.11 5,269,982 6.00 
TB1,852,135 17.83 623,247 6.00 
Common Equity Tier 1 capital (to risk-weighted assets):
MUFG(1)
15,041,314 13.53 9,626,471 8.66 
BK12,126,413 13.80 3,952,486 4.50 
TB1,616,473 15.56 467,435 4.50 
Leverage ratio:
MUFG(2)
17,479,730 5.19 12,615,964 3.75 
BK14,153,613 5.23 8,104,067 3.00 
TB1,852,135 6.34 876,017 3.00 
ActualFor capital
 adequacy purposes
Amount
Ratio
Amount
Ratio
(in millions, except percentages)
Stand-alone:
At March 31, 2023:
Total capital (to risk-weighted assets):
BK¥11,115,302 10.71 %¥8,295,019 8.00 %
TB2,131,007 19.60 869,700 8.00 
Tier 1 capital (to risk-weighted assets):
BK9,644,128 9.30 6,221,264 6.00 
TB1,861,150 17.11 652,275 6.00 
Common Equity Tier 1 capital (to risk-weighted assets):
BK8,410,290 8.11 4,665,948 4.50 
TB1,711,650 15.74 489,206 4.50 
Leverage ratio:
BK9,644,128 4.02 7,183,295 3.00 
TB1,861,150 8.15 684,297 3.00 
At March 31, 2024:
Total capital (to risk-weighted assets):
BK¥12,279,192 16.29 %¥6,029,065 8.00 %
TB2,209,640 19.03 928,478 8.00 
Tier 1 capital (to risk-weighted assets):
BK10,839,039 14.38 4,521,799 6.00 
TB1,941,116 16.72 696,359 6.00 
Common Equity Tier 1 capital (to risk-weighted assets):
BK8,872,411 11.77 3,391,349 4.50 
TB1,707,616 14.71 522,269 4.50 
Leverage ratio:
BK10,839,039 4.50 7,221,205 3.00 
TB1,941,116 7.09 821,320 3.00 
Notes:
(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, 2023 and 2024, and the countercyclical buffer of 0.04% and 0.16% as of March 31, 2023 and 2024, respectively.
(2)Effective March 31, 2023, the G-SIB leverage ratio buffer requirement became applicable to Japanese banking institutions with international operations conducted through foreign offices. As a result, in addition to the 3.0% minimum leverage ratio, MUFG is required to maintain a G-SIB leverage ratio buffer of 0.75% as of March 31, 2023 and 2024.