Tax warnings surged across Britain as HMRC targets crypto gains.

HM Revenue and Customs (HMRC) has significantly increased its scrutiny of UK crypto users during the 2025-2026 financial year.

The tax authority reportedly sent more than 81,000 warning letters to holders it suspects may have unpaid tax, the BBC reported after reviewing a freedom of information request.

UK Holders on Notice

The number is nearly three times higher than the 27,714 letters sent in 2024. HMRC believes a large share of the unpaid tax relates to gains made during the crypto bull run between 2022 and 2025. The tax authority has reminded recipients that obligations can arise when crypto is sold,…