If you plan to run a cryptoasset business in the UK after October 2027, the decision that matters now is whether you file inside the FCA application window, which closes on 28 February 2027. Firms that apply in time can keep operating under transitional provisions while the FCA assesses them. Firms that miss the window lose that protection and may have to stop relevant activities until they are authorised. For a founder, that turns a long-dated regime into a roughly four-month planning problem.
This is the UK crypto licence deadline in practice: the date you are working back from is not the October 2027 go-live, it is the February 2027 filing cut-off.
What is the UK crypto application window?
The FCA's application window for firms relying on transitional arrangements opened on 30 September 2026 and closes on 28 February 2027. The new regulated cryptoasset activities take effect on 25 October 2027 under the Financial Services and Markets Act 2000 (Cryptoassets) Regulations 2026, which were made on 4 February 2026. The FCA published its final rule suite on 30 June 2026, covering admissions and disclosures, market abuse, stablecoin issuance, regulated activities, prudential requirements and Handbook application. On 16 September 2026 it added final perimeter guidance in PS26/18, which explains when an activity needs authorisation.
Existing FCA registrations and permissions do not convert automatically. A firm that holds a money laundering registration today still needs to apply under the new regime.
What this means for a licensing decision
Three points drive the choice of timing.
First, the window rewards early readiness, not early perfection. A complete application needs a business model that maps cleanly to the regulated activities in the perimeter guidance, a prudential position, governance and a financial crime framework. Firms that have not yet settled which activities they perform should resolve that first, because the perimeter guidance is the test the FCA will apply.
Second, stablecoin issuers and custodians face the most work. The stablecoin issuance rules sit in their own policy statement, and issuers should compare them with the EU route before choosing where to authorise first. Our UK crypto regime page tracks the status of the UK regime, and the crypto comparison tool lets you set it against other jurisdictions.
Third, UK e-money and payments firms that also touch cryptoassets should not assume their existing permissions cover the new activities. The UK e-money page shows the separate payments regime so you can see where the two overlap.
What to do before 28 February 2027
Map every product to a regulated activity using PS26/18. Decide whether you will apply as a new applicant or restructure first. Book your pre-application engagement early, since the FCA has offered support meetings through its authorisation portal since July 2026. Build a filing timeline that finishes weeks before the cut-off, not on it.
The FCA has also said it will consult later in 2026 on decentralised finance, the Financial Crime Guide and cryptoasset firm failures, and expects to publish further perimeter changes in early 2027. Those may shift detail, but they do not move the filing date.
If you want the full UK picture against other regimes, our reports set out regulator pace and friction points across jurisdictions.
This article is informational only and is not legal advice.