FCA Finalizes UK Crypto Rulebook With Lower Stablecoin Capital Floor

The UK Financial Conduct Authority has finalized a broad crypto rulebook that brings exchanges, wallets, custodians, staking services and qualifying stablecoin issuers into a full authorisation regime.

The framework introduces mandatory licensing, custody standards, market-abuse protections, disclosure rules and prudential requirements. Firms that want to carry out regulated crypto activities in the UK will need FCA approval once the new regime takes effect.

Applications open on 30 September 2026 and run until 28 February 2027. The regime is expected to start on 25 October 2027, giving existing firms a defined window to seek authorisation before the full framework applies.

The final rules move the UK away from a patchwork model built mostly around anti-money-laundering registration and financial promotions. Crypto firms will face a broader financial-services perimeter that covers platform conduct, client asset protection, market integrity and operational standards.

Stablecoin Issuers Get Softer Capital Treatment

The biggest change is the stablecoin capital requirement. The FCA reduced the proposed floor for non-systemic stablecoin issuers from 2% to 1% of the total value issued, after industry feedback that the earlier threshold was too costly for firms trying to compete with offshore, U.S. and EU issuers.

The reduction makes the framework more proportionate, but it does not remove the core requirements around reserves, redemption, safeguarding and supervision. Stablecoin issuers will still need to show that backing assets are properly managed and that customers can redeem tokens under the rules.

The UK’s stablecoin framework now has two tracks. The FCA will oversee most qualifying stablecoin issuers and cryptoasset custodians. The Bank of England will handle systemic stablecoins that could affect payments or financial stability, after its own £40 billion issuance guardrail replaced direct user holding caps.

That split gives the UK a layered model. Smaller and non-systemic issuers face FCA supervision with a lower capital floor, while systemically important stablecoins face Bank of England controls around issuance size, reserve composition and redemption resilience.

UK Moves Toward Full Crypto Authorisation

The new regime will affect more than stablecoin issuers. Crypto exchanges, brokers, custodians, lending platforms and staking services will need to prepare for formal authorisation, reporting, compliance systems and stronger customer-protection obligations.

Market-abuse rules will also become central. Trading platforms will need stronger systems to detect manipulation, insider trading and abusive order-book behavior. Custody rules will raise expectations around asset segregation, security, insolvency handling and operational resilience.

The framework puts the UK closer to other major jurisdictions that are moving crypto into regulated financial infrastructure. U.S. regulators have pushed payment stablecoin issuers toward bank-style customer checks, while European exchanges are already reorganizing around MiCA authorisations and passported entities.