HMRC's New £300 Crypto Fine: Are You at Risk?
Starting January 1, 2026, HMRC will impose £300 fines on UK crypto holders who fail to comply with new CARF reporting requirements. This comprehensive guide explains who's at risk, what you must do, and how to avoid these automatic penalties.
Koin Keepers · Published 14 August 2025 · 7 min read
This guide is being updated.
We are revising this article for current HMRC rates and rules, so we have taken the old version down rather than leave out-of-date figures online.
Our current article on this topic is Do Crypto Exchanges Report to HMRC? CARF Rules Explained.
In the meantime, HMRC’s own guidance is on GOV.UK, and our Capital Gains Tax estimator uses current rates.
General information about UK tax, not advice for your circumstances. Tax rules change; this article reflects our understanding on the date shown above.
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