UK tax authority HMRC escalates enforcement with 81,000 crypto tax warnings and penalties up to 100%, while banks block 40% of crypto exchange transfers.
Regulation & Gov ·
The UK tax authority has significantly intensified enforcement activity against crypto investors. Over 81,000 warning letters were issued during the 2025-2026 financial year to holders suspected of unpaid taxes, representing a near threefold increase from the 27,714 letters sent in the previous year. HMRC attributes much of this unpaid liability to profits realized during the 2022-2025 crypto bull run, with noncompliance potentially drawing penalties of up to 100% of owed tax plus interest.
The enforcement push reflects broader shifts in regulatory capacity. Tax obligations can arise when crypto is sold, exchanged, given away, or spent on purchases—mechanics many younger traders may underestimate or be unaware of. Starting in 2027, HMRC will gain access to customer data held by offshore firms, a power estimated to generate £315 million by 2030. Simultaneously, banking friction has emerged as a parallel constraint on the sector, with research indicating that banks block or delay roughly 40% of transfers to digital asset exchanges, prompting parliamentary calls for individualized risk assessment rather than sector-wide restrictions.
What remains unclear is the rate of compliance with the warning letters or how many recipients will ultimately face escalated enforcement action. The practical impact of forthcoming offshore reporting requirements and whether banking policies will shift alongside anticipated regulatory changes are also still undetermined.