Mizuho Bank (USA): Tier 1 Risk-Based Capital Ratio
Data as of · sourced from FFIEC call reports. How we update
Mizuho Bank (USA) reported a tier 1 risk-based capital ratio of 33.27% as of Q2 2026, ranking #51 of 2,136 U.S. banks (98th percentile). Tier 1 Risk-Based Capital combines Common Equity Tier 1 plus Additional Tier 1 instruments, the broader capital measure after CET1.
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What is the Tier 1 Risk-Based Capital Ratio?
The Tier 1 Risk-Based Capital ratio measures a bank's Tier 1 capital (CET1 plus Additional Tier 1 instruments) against its risk-weighted assets. It is the broader of the two Tier-1 capital measures and is still the headline capital metric for most banking comparisons.
Read Tier 1 RBC alongside CET1: a large gap between them means the bank relies meaningfully on preferred stock for its capital base, which is more expensive and less flexible than common equity. Most community banks show Tier 1 RBC within 10–30bp of CET1.
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What is Mizuho Bank (USA)'s Tier 1 Risk-Based Capital Ratio?
Mizuho Bank (USA)'s Tier 1 Risk-Based Capital Ratio was 33.27% as of Q2 2026, ranking #51 of 2,136 U.S. banks.
What is the Tier 1 Risk-Based Capital Ratio?
The Tier 1 Risk-Based Capital ratio measures a bank's Tier 1 capital (CET1 plus Additional Tier 1 instruments) against its risk-weighted assets. It is the broader of the two Tier-1 capital measures and is still the headline capital metric for most banking comparisons.
More Mizuho Bank (USA) metrics
Source: FFIEC call reports, standardized by BankRegReports. Values are point-in-time as filed. See the full Mizuho Bank (USA) profile or how this data updates. The figures come from the bank's call report.
Regulator records: FDIC BankFind (cert 21843) · FFIEC NIC profile (RSSD 229913)