Global systemically important banks — the largest, most interconnected lenders whose failure would threaten the wider financial system. Designated annually by the Financial Stability Board using a five-factor scoring methodology, GSIBs face higher capital surcharges, tougher supervision, and resolution-planning requirements proportional to their systemic footprint.
How it works
The FSB, working with the Basel Committee, scores banks on size, interconnectedness, cross-jurisdictional activity, complexity, and substitutability. The composite score maps banks into "buckets" carrying additional Common Equity Tier 1 surcharges, typically 1.0%–3.5% of risk-weighted assets, on top of standard Basel III minimums.
Why it matters now
In 2025–2026 GSIBs sit at the centre of UK and EU supervisory attention as the PRA and ECB probe model-risk governance, non-bank credit exposures, and operational resilience — distinguishing the systemic incumbents from challenger banks in roundtable consultations.
Example
The FSB's November 2023 list comprised 29 GSIBs. JPMorgan Chase sat alone in the highest occupied bucket with a 2.5% CET1 surcharge, while most banks — including Barclays, HSBC, and Deutsche Bank — fell into lower buckets carrying 1.0%–1.5% surcharges.
Frequently asked
- What is a GSIB?
- A GSIB is a global systemically important bank whose failure would threaten the wider financial system, designated annually by the Financial Stability Board. The FSB scores banks on size, interconnectedness, cross-jurisdictional activity, complexity, and substitutability, then assigns capital surcharges of 1.0%–3.5%. The November 2023 list named 29 such banks worldwide.
- How is the GSIB capital surcharge calculated?
- The GSIB surcharge is set by a composite score across five equally weighted categories that maps banks into buckets, each carrying an additional Common Equity Tier 1 requirement of 1.0% to 3.5% of risk-weighted assets. This sits on top of standard Basel III minimums. JPMorgan Chase carried the highest occupied surcharge of 2.5% in 2023.
- How do GSIBs differ from domestic systemically important banks?
- GSIBs are designated globally by the FSB and Basel Committee, while domestic systemically important banks (D-SIBs) are identified by national regulators for risks confined to a single economy. GSIBs face cross-jurisdictional resolution planning and TLAC requirements; D-SIB surcharges and rules are set locally, such as by the PRA
Glossary · PRA
The Prudential Regulation Authority is the UK's prudential supervisor for banks, building societies, credit unions, insurers and major investment firms. A division of the Bank of England, it sets capital, liquidity and governance standards, conducts firm-specific supervision, and runs consultation cycles that shape model-risk and operational-resilience expectations.
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- Why do GSIBs matter for financial stability now?
- GSIBs matter because they concentrate the systemic risk regulators most fear, sitting at the centre of supervisory attention in 2025–2026. The PRA and ECB are probing GSIB model-risk governance, non-bank credit exposures, and operational resilience. Their higher capital buffers and resolution plans are the post-2008 defence against a too-big-to-fail bailout.
- How many GSIBs are there?
- There were 29 GSIBs on the FSB's November 2023 list, a count that shifts annually as banks migrate between buckets or enter and exit designation. The number has hovered near 30 since the framework began in 2011. US, European, Chinese, and Japanese banks dominate the roster.