Mizuho Financial Group posts June 2026 capital ratios

Mizuho Financial Group, Inc. reported updated regulatory capital metrics as of June 30, 2026 on a consolidated basis and for key banking subsidiaries under international and domestic standards.

Rhea-AI Filing Summary

Mizuho Financial Group, Inc. reported updated regulatory capital metrics as of June 30, 2026 on a consolidated basis and for key banking subsidiaries under international and domestic standards.

On a consolidated basis for Mizuho Financial Group, the Total Capital Ratio was 17.74%, the Tier 1 Capital Ratio was 15.94%, and the Common Equity Tier 1 Capital Ratio was 13.51%, each modestly higher than as of March 31, 2026. Total capital was ¥14,590.7 billion and risk-weighted assets were ¥82,213.7 billion.

For Mizuho Bank (consolidated), the Total Capital Ratio was 16.56%, Tier 1 Capital Ratio 14.59%, and Common Equity Tier 1 Capital Ratio 11.95% as of June 30, 2026. For Mizuho Trust & Banking, the domestic-standard capital ratio was 31.05% and, on a reference international-standard basis, the Total Capital Ratio was 33.98%.

Key Figures

Total Capital Ratio (Consolidated Group): 17.74% CET1 Capital Ratio (Consolidated Group): 13.51% Total Capital (Consolidated Group): ¥14,590.7 billion +4 more

7 metrics

Total Capital Ratio (Consolidated Group) 17.74% Mizuho Financial Group, international standard, as of June 30, 2026

CET1 Capital Ratio (Consolidated Group) 13.51% Mizuho Financial Group, international standard, as of June 30, 2026

Total Capital (Consolidated Group) ¥14,590.7 billion Mizuho Financial Group, as of June 30, 2026

Risk-weighted Assets (Consolidated Group) ¥82,213.7 billion Mizuho Financial Group, as of June 30, 2026

Mizuho Bank CET1 Ratio 11.95% Mizuho Bank (consolidated), international standard, as of June 30, 2026

Mizuho Trust & Banking Capital Ratio 31.05% Domestic standard, as of June 30, 2026

Total Required Capital (Group) ¥6,577.1 billion Calculated as 8% of risk-weighted assets, as of June 30, 2026

Key Terms

Common Equity Tier 1 Capital Ratio, Risk-weighted Assets, Total Required Capital, International Standard, +1 more

5 terms

Common Equity Tier 1 Capital Ratio financial

"Common Equity Tier 1 Capital Ratio was 13.51% as of June 30, 2026"

A bank’s common equity tier 1 (CET1) capital ratio measures the size of its strongest loss-absorbing capital—mainly common shares and retained earnings—relative to the bank’s assets after adjusting those assets for how risky they are (riskier loans count more). Think of it as the safety cushion compared with the weight of risky business; investors use it to judge a bank’s ability to survive losses, meet rules, and sustain dividends or growth.

Risk-weighted Assets financial

"Risk-weighted Assets were ¥82,213.7 billion as of June 30, 2026"

Risk-weighted assets are a bank’s assets (like loans and investments) adjusted by how risky regulators consider each one, so safer items count less and riskier items count more. Think of it as packing a suitcase where heavy, fragile items take up more “real” space; higher risk-weighted assets mean a bank must hold more capital as a cushion. Investors watch this because it affects a bank’s safety, regulatory limits and ability to lend or return money to shareholders.

Total Required Capital financial

"Total Required Capital (7)x8% was ¥6,577.1 billion"

International Standard financial

"Mizuho Financial Group International Standard capital ratios are presented"

Domestic Standard financial

"Mizuho Trust & Banking Domestic Standard capital ratio was 31.05%"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What was Mizuho Financial Group (MFG) consolidated Total Capital Ratio as of June 30, 2026?

Mizuho Financial Group reported a consolidated Total Capital Ratio of 17.74% as of June 30, 2026, under the international standard, slightly higher than 17.61% as of March 31, 2026.

What was the Common Equity Tier 1 Capital Ratio for Mizuho Financial Group (MFG) on June 30, 2026?

As of June 30, 2026, Mizuho Financial Group’s Common Equity Tier 1 Capital Ratio was 13.51%, compared with 13.16% as of March 31, 2026, reflecting higher common equity Tier 1 capital and increased risk-weighted assets.

How large were Mizuho Financial Group (MFG) consolidated risk-weighted assets at June 30, 2026?

Consolidated risk-weighted assets were ¥82,213.7 billion as of June 30, 2026, up from ¥80,925.3 billion as of March 31, 2026, which also increased total required capital to ¥6,577.1 billion.

What capital ratios did Mizuho Bank report as of June 30, 2026?

Mizuho Bank (consolidated) reported a Total Capital Ratio of 16.56%, a Tier 1 Capital Ratio of 14.59%, and a Common Equity Tier 1 Capital Ratio of 11.95% as of June 30, 2026 under the international standard.

What was Mizuho Trust & Banking’s capital ratio under the domestic standard on June 30, 2026?

Mizuho Trust & Banking’s capital ratio under the domestic standard was 31.05% as of June 30, 2026, up from 29.28% as of March 31, 2026, supported by higher core capital and lower risk-weighted assets.

How much total capital did Mizuho Financial Group (MFG) hold on a consolidated basis at June 30, 2026?

On a consolidated basis, Mizuho Financial Group held total capital of ¥14,590.7 billion as of June 30, 2026, an increase from ¥14,252.8 billion at March 31, 2026, alongside higher Tier 1 and common equity Tier 1 capital.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 6-K: How Foreign Companies Report to the SEC →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/14/2026 - 06:08 AM Accepted by SEC EDGAR 08/14/2026 - 06:01 AM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number 001-33098

Mizuho Financial Group, Inc.

(Translation of registrant’s name into English)

5-5, Otemachi 1-chome

Chiyoda-ku, Tokyo 100-8176

Japan

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒  Form 40-F ☐

THIS REPORT ON FORM 6-K SHALL BE DEEMED TO BE INCORPORATED BY REFERENCE INTO THE PROSPECTUS FORMING A PART OF MIZUHO FINANCIAL GROUP, INC.’S REGISTRATION STATEMENT ON FORM F-3 (FILE NO. 333-282497) AND TO BE A PART OF SUCH PROSPECTUS FROM THE DATE ON WHICH THIS REPORT IS FURNISHED, TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date:		August 14, 2026
Mizuho Financial Group, Inc.
By:		/s/ Makoto Samejima
Name:		Makoto Samejima
Title:		Senior Managing Corporate Executive / Group CFO

August 14, 2026

To whom it may concern:

Company Name:		Mizuho Financial Group, Inc.
Representative:		Masahiro Kihara, President & CEO
Head Office:		1-5-5 Otemachi, Chiyoda-ku, Tokyo
Stock Code Number:		8411
		(Tokyo Stock Exchange (Prime Market))

Announcement regarding Capital Ratio as of June 30, 2026

Mizuho Financial Group, Inc. hereby announces Capital Ratio as of June 30, 2026, as shown in the appendix.

Capital Ratio

		Consolidated								(%, Billions of yen)
Mizuho Financial Group International Standard		As of June 30, 2026				Change				As of March 31, 2026
(1)   Total Capital Ratio			17.74				0.13				17.61
(2)   Tier 1 Capital Ratio			15.94				0.21				15.73
(3)   Common Equity Tier 1 Capital Ratio			13.51				0.35				13.16
(4)   Total Capital			14,590.7				337.9				14,252.8
(5)   Tier 1 Capital			13,107.9				374.3				12,733.5
(6)   Common Equity Tier 1 Capital			11,110.0				459.5				10,650.5
(7)   Risk-weighted Assets			82,213.7				1,288.4				80,925.3
(8)   Total Required Capital (7)x8%			6,577.1				103.0				6,474.0
		Consolidated												Non-Consolidated
Mizuho Bank International Standard		As of June 30, 2026				Change				As of March 31, 2026				As of June 30, 2026
(1)   Total Capital Ratio			16.56				0.18				16.38				15.39
(2)   Tier 1 Capital Ratio			14.59				0.21				14.38				13.28
(3)   Common Equity Tier 1 Capital Ratio			11.95				0.38				11.57				10.45
(4)   Total Capital			12,546.0				384.1				12,161.9				10,818.4
(5)   Tier 1 Capital			11,054.9				381.8				10,673.0				9,333.8
(6)   Common Equity Tier 1 Capital			9,055.8				469.0				8,586.8				7,347.0
(7)   Risk-weighted Assets			75,754.9				1,549.3				74,205.5				70,274.2
(8)   Total Required Capital (7)x8%			6,060.3				123.9				5,936.4				5,621.9
		Consolidated												Non-Consolidated
Mizuho Trust & Banking Domestic Standard		As of June 30, 2026				Change				As of March 31, 2026				As of June 30, 2026
(1)   Capital Ratio			31.05				1.77				29.28				30.78
(2)   Core Capital			444.7				8.3				436.4				424.8
(3)   Risk-weighted Assets			1,432.0				(58.0	)			1,490.0				1,380.0
(4)   Total Required Capital (3)x4%			57.2				(2.3	)			59.6				55.2
		Consolidated												Non-Consolidated
Mizuho Trust & Banking International Standard (Reference)		As of June 30, 2026				Change				As of March 31, 2026				As of June 30, 2026
(1)   Total Capital Ratio			33.98				1.66				32.32				33.81
(2)   Tier 1 Capital Ratio			33.92				1.67				32.25				33.75
(3)   Common Equity Tier 1 Capital Ratio			33.92				1.68				32.24				33.75