UK tax agency warns 81,172 crypto investors over possible unpaid taxes

The UK tax authority HMRC sent 81,172 messages to crypto investors in the 2025-2026 tax year warning of possible unpaid taxes, nearly triple the 27,714 sent in the 2023-2024 tax year, BBC reported. Capital gains tax may apply when profits are made from selling cryptocurrencies or exchanging them for other cryptocurrencies, and failure to report those gains can result in fines or criminal penalties. HMRC believes a significant share of capital gains generated during the price surge between December 2022 and October 2025 has yet to be reported. Separately, overseas crypto platforms are set to face a requirement from March 2027 to provide customer information, and HMRC estimates the measure could secure up to 315 million pounds ($429.64 million) in additional tax revenue by April 2030.