United Kingdom: your exchange reports you to HMRC from 2026

From 1 January 2026 a crypto service provider with a connection to the United Kingdom must check who its users are and what they transact, and report it to HMRC. The first calendar year reported is 2026 and the report is due on or before 31 May 2027. The United Kingdom is outside DAC8 and does this under the OECD's own Cryptoasset Reporting Framework.

What is taxed does not change: the annual exempt amount, the 18% and 24% rates and the share identification rules are untouched. What changes is that HMRC will hold the figures — and your return has had a place for them since the 2024 to 2025 tax year, when Self Assessment gained a cryptoasset section of its own.

Sources: The Reporting Cryptoasset Service Providers (Due Diligence and Reporting Requirements) Regulations 2025 (SI 2025/744), reg. 1 — “come into force on 1st January 2026”; reg. 6(1) — “make a report to HMRC setting out the information in paragraph (2) on or before 31st May following the end of the calendar year”; HMRC, Check if you need to pay tax when you sell cryptoassets (updated 5 October 2026) — “you should complete it in pound sterling, in the cryptoasset section — available on returns for the tax year 2024 to 2025 onwards” (legislation.gov.uk, gov.uk)