Basel III capital hit on the G-Sibs jumped sixfold in H2 2025, the highest in two and a half years. Full implementation would lift Tier 1 minimum required capital by an average 1.8% over the current b

What happened: The estimated impact of the final Basel III reforms on Tier 1 minimum required capital for global systemically important banks rebounded sharply in the second half of 2025, reaching its highest level in two-and-a-half years. Key numbers: Full implementation would raise G-Sibs' Tier 1 MRC by an average 1.8% versus the current framework baseline. Why it matters: The rebound marks the highest estimated capital hit in two-and-a-half years, signaling renewed pressure on G-Sibs under the final Basel III standards.

The estimated impact of the final Basel III reforms on Tier 1 minimum required capital for global systemically important banks rebounded sharply in the second half of 2025, reaching its highest level in two-and-a-half years.

The rebound marks the highest estimated capital hit in two-and-a-half years, signaling renewed pressure on G-Sibs under the final Basel III standards.