United Kingdom: 3,000 pounds of gains tax-free, then 18% or 24%

Since 6 April 2024 the first 3,000 pounds of gains in a tax year are free of tax, where two years before it was 12,300. Since 30 October 2024 the rates are 18% and 24%, which of the two depending on the rest of your income. How a gain is worked out has not changed: what you sell is matched against what you bought the same day, then in the 30 days after it, then against your pool of that token; how long you held it makes no difference. The online return is due on 31 January.

Sources: TCGA 1992 s.1K(2); s.1H(3) as substituted by Finance Act 2025 (c. 8) s.7, Schedule 2; s.105(1); s.106A(5); s.104(1); HMRC CRYPTO22200; TMA 1970 s.8(1D)(b) (legislation.gov.uk, gov.uk)