The UK Financial Conduct Authority published final perimeter guidance on September 16 setting out when crypto firms need authorization under the country’s new regime, which takes effect October 25, 2027. Applications open September 30, and firms have until February 28, 2027 to seek transitional arrangements.
The guidance converts what had been an abstract question, whether a crypto business falls in scope, into activity-by-activity tests. It covers stablecoin issuance, operating trading platforms, dealing and arranging transactions, safeguarding client assets and arranging staking. Firms offering any of these to UK customers will need FCA authorization before the regime starts.
No automatic rollover
The substantive change is what the guidance does not do. Existing registrations under the money laundering regulations will not automatically convert into the new regime. Firms holding legacy registrations must map each business line to a permission under the new framework or request a variation of existing permissions.
That requirement hits multi-service operators hardest. A platform running custody plus staking, or trading plus facilitation, has to map every line separately. The FCA’s own registration statistics show why the gap matters: of 391 applications determined since January 2020, only 68 resulted in registration, a 17% success rate. Firms assuming their current status carries over would be betting against their own regulator’s track record.
Timeline and the risk of waiting
The application window runs from September 30, 2026 to February 28, 2027. The regime itself starts October 25, 2027. The FCA encourages firms to apply early and warns that late or poor-quality applications face rejection, delay or refusal. Since May 2026, firms have been able to book free pre-application meetings through the regulator’s PASS service.
David Geale, the FCA’s executive director for payments and digital finance, said preparing for regulation begins with understanding how the framework applies to a company’s business, and that the guidance gives firms the clarity they have been asking for so they can prepare with confidence.
Parliament laid the groundwork in February 2026, when it passed legislation bringing crypto assets within the FCA’s regulatory scope. The FCA finalized its package of rules and guidance in June and consulted on the perimeter guidance from April to June this year.
The regulator has also been running a webinar series through September covering stablecoin issuance, market abuse rules, the prudential regime and the authorization process itself, a sign it expects a heavy volume of applications in the first weeks of the window. A webinar on the prudential regime is scheduled for September 29, the day before applications open.
Banks stay in control of payments
One point the FCA addressed directly: the new framework regulates crypto firms, not banks. It creates no legal requirement for banks to process payments to authorized exchanges. Banks keep control of their own fraud and risk policies.
That matters because UK bank friction with crypto has been a persistent complaint. Chase UK continues blocking outgoing payments it identifies as crypto transactions. NatWest limits exchange transfers to 1,000 pounds a day and 5,000 over 30 days. Barclays imposes 2,500 per transaction and 10,000 monthly. Authorization will not change any of that. A firm can clear the authorization hurdle and still watch customers struggle to fund accounts.
How the UK regime compares
The UK approach differs from the EU’s MiCA framework in pace and structure. MiCA took effect across the bloc in stages through 2024 and 2025, with grandfathering periods that let existing providers keep operating while their applications were processed. The UK regime instead sets a hard start date in October 2027, with a single application window that closes in February 2027.
For global platforms, that means the UK cannot be treated as an extension of EU licensing. Firms authorized under MiCA still need a separate FCA application. Several large exchanges have UK entities registered under the money laundering rules, and each of them now faces the mapping exercise the guidance requires.
The regime also brings consumer protection standards that the current light-touch framework lacks. Client asset safeguarding moves into the FCA’s custody rulebook, and market abuse rules apply to trading venues. Stablecoin issuers face prudential requirements modeled in part on bank-style reserve standards, a point the FCA has consulted on since 2023.
What comes next
The FCA plans further consultation on its perimeter guidance later this year, plus separate work on decentralized finance guidance and operational resilience for firms using distributed ledger technology. The regulatory map may keep shifting as the industry and the regulator test how definitions apply to real-world structures.
For firms, the practical task now is a gap analysis. The FCA expects applicants to review the new regulated activities, map their permissions, assess resources and costs, and present a board-approved implementation plan showing who is accountable and when changes land. Firms that apply outside the window or submit thin applications risk having them rejected outright.
The UK is one of the largest financial markets to move crypto into a full authorization regime, and the sequencing matters for the industry. Between now and October 2027, every exchange, custodian and stablecoin issuer serving UK customers must decide whether to apply, restructure or exit. The 17% historical registration success rate suggests the FCA intends to be selective, and the firms that start preparing now, rather than in January, will be the ones that clear the bar.
Fees and funding rules are also in motion. The FCA’s quarterly consultation paper CP26/17 proposes changes to how cryptoasset firms are charged, would allow certain funds to invest up to 10% in cryptoasset exchange traded notes, and would remove some approval notification requirements for cryptoasset financial promotions. Those details will land before the application window closes, and firms should track them as part of their cost planning.