Business Context and Reporting Period
This Form 6-K filing by Mizuho Financial Group, Inc. (Mizuho) reports capital adequacy metrics as of June 30, 2026. The report was filed on August 14, 2026, and covers consolidated data for the Group, as well as specific data for Mizuho Bank and Mizuho Trust & Banking under both International and Domestic standards.
Key Financial Metrics: Capital Adequacy
The filing focuses exclusively on capital ratios and risk-weighted assets. Revenue, profit, cash flow, and debt figures are not provided in this document.
| Metric (Consolidated Group) | As of June 30, 2026 | Change vs. March 31, 2026 |
|---|---|---|
| Total Capital Ratio | 17.74% | +0.13% |
| Tier 1 Capital Ratio | 15.94% | +0.21% |
| Common Equity Tier 1 (CET1) Ratio | 13.51% | +0.35% |
| Total Capital (Billions of Yen) | 14,590.7 | +337.9 |
| Risk-Weighted Assets (Billions of Yen) | 82,213.7 | +1,288.4 |
Subsidiary Highlights:
- Mizuho Bank (Consolidated): Total Capital Ratio of 16.56% (up 0.18%); CET1 Ratio of 11.95% (up 0.38%).
- Mizuho Trust & Banking (Domestic Standard): Capital Ratio of 31.05% (up 1.77%).
Material Changes Versus Prior Period
Compared to the March 31, 2026 quarter-end:
- Capital Growth: All major capital components increased. Common Equity Tier 1 Capital rose by 459.5 billion yen to 11,110.0 billion yen.
- Asset Expansion: Risk-weighted assets increased by 1,288.4 billion yen, reflecting a 1.6% growth in the risk profile.
- Ratio Improvement: Despite the increase in risk-weighted assets, capital ratios improved across the board, indicating capital generation outpaced asset growth.
Guidance, Outlook, and Risks
The filing contains no forward-looking guidance, management commentary on future strategy, or specific risk factor disclosures beyond the standard capital adequacy reporting. The document serves strictly as a regulatory update on capital positions.
Investor Verification Checklist
- Verify the source of the 459.5 billion yen increase in Common Equity Tier 1 Capital (e.g., retained earnings vs. capital issuance).
- Confirm the composition of the 1,288.4 billion yen increase in Risk-Weighted Assets to assess credit exposure growth.
- Review the full 20-F annual report for corresponding revenue and profitability data not included in this 6-K.
- Check if the capital ratios meet or exceed internal targets and regulatory minimums for the upcoming fiscal year.