Basel III's Crypto Risk Weight Makes Bitcoin 12.5 Times More Expensive For Banks

Regulated banks in the US, European Union, and UK are now technically allowed to hold crypto assets on behalf of clients following the activation of a single capital rule by the Basel Committee on Banking Supervision (BCBS) on January 1, 2026. However, this new framework has made it economically catastrophic for institutions to do so due to an 18-month implementation runway that expired at the start of the year.

The BCBS finalized its crypto asset prudential standard, known as SCO60, in December 2022. Under this framework, unbacked crypto assets like Bitcoin (BTC) and Ethereum sit in 'Group 2b,' carrying a 1,250% risk weight. This is significantly higher than the 100% risk weight for standard equity positions.

The effective 12.5x capital multiplier versus standard equities makes proprietary crypto positions structurally unviable for most regulated banks under current rules. Custody and fee-based models are the only near-term escape valve, but they carry their own operational risk charges that are still being calibrated by national regulators.