HMRC's Cryptocurrency Crackdown: What You Need to Know
HMRC has issued 81,000 nudge letters to cryptocurrency investors following analysis of reported gains totalling £1.38 billion. This signals intensifying scrutiny of the crypto sector, but the real enforcement challenge arrives in 2027.
From January 2027, automatic exchange reporting under the Common Reporting Standard (CARF) launches. This replaces the current voluntary disclosure regime with mandatory cross-border data sharing. Crypto exchanges and custodians globally will report holdings and transactions directly to HMRC, which will automatically match this data against UK tax returns and cross-border submissions.
For SME directors and sole traders holding cryptocurrency, the implications are stark. Undeclared gains, timing mismatches, or incomplete records will be flagged instantly. There is no longer an opportunity to settle voluntarily after HMRC sends a letter.
What action should you take? If you hold crypto or have advised clients with holdings, audit positions now. Reconcile all transactions, cost basis, and reported gains. If there are discrepancies, explore voluntary disclosure options before 2027. Consult your accountant on optimal reporting structure (personal vs. business holdings carry different tax treatments) and ensure quarterly MTD submissions (if required) capture all gains accurately.
This enforcement wave reflects HMRC's broader transformation into a data-driven tax authority. Tax planning advice on alternative asset structures should be reviewed if crypto forms part of your portfolio.