UK's FCA publishes final crypto rulebook ahead of 2027 start
The package covers stablecoin issuance, trading platforms, custody, staking, lending, market abuse and prudential controls, with the full regime due to start on Oct. 25, 2027.
By The Third AnglePublished 4 min read
London financial district, used as an illustration for the UK's crypto rulebook; the image does not show the FCA. Photo: Fred Romero / Wikimedia Commons · CC BY 2.0
The UK's Financial Conduct Authority has published its final package of crypto rules, setting the operating framework firms will need to meet when the broader regime begins on Oct. 25, 2027. The FCA's policy statement says the framework rests on regulations passed by Parliament on Feb. 4, 2026, and covers regulated crypto activities, financial promotions and qualifying stablecoins.
The package covers admissions and disclosures, market abuse, stablecoin issuance, trading platforms, custody, lending, staking, prudential requirements and the FCA Handbook. The rules apply to firms granted permission under the Financial Services and Markets Act on or after the regime's start date.
From token design to customer treatment
For stablecoin issuers, the rulebook sets requirements around backing assets, safeguarding, redemption and holder disclosures. It uses statutory trust arrangements for backing assets, changes how issuers calculate the pool needed for redemptions and permits an excess of up to 5% in that pool. The FCA also cut the capital coefficient for qualifying issuers from 2% to 1%.
For platforms and service providers, the changes reach the daily workflow. Trading venues must apply best-execution principles and check prices across multiple venues. Lending firms face stronger disclosure, consent and record-keeping duties, with over-collateralization and negative-balance protections. Custody moves into a safeguarding framework, while staking providers must explain the service, obtain consent and keep records.
The long runway is part of the story
The FCA's final rules give firms a detailed target, but not a shortcut to permission. The regulator's implementation overview says the regime is expected to come into force on Oct. 25, 2027, with applications and transitional work leading up to that date. The FCA plans industry webinars in September 2026.
That creates a compliance project measured in systems and evidence rather than a single filing. Platforms will need to show how orders are routed, custodians will need to protect client assets, and issuers will need segregated backing for redemption claims.
