Key facts
- Full implementation of the final Basel III standards would increase G-Sibs’ Tier 1 minimum required capital by an average 1.8% relative to the current framework baseline.
- This estimated increase represents the highest level in two-and-a-half years.
The estimated impact of the final Basel III reforms on Tier 1 minimum required capital (MRC) for global systemically important banks (G-Sibs) rebounded sharply in the second half of 2025, reaching its highest level in two-and-a-half years. Full implementation of the final Basel III standards would increase G-Sibs’ Tier 1 MRC by an average 1.8% relative to the current framework baseline.
