Capital Gains Tax Rates 2025 25. Capital gains tax is not a big revenue raiser, with the office for budget responsibility (obr) estimating that. Calculations are based on tax rules which apply as at 6 april 2025 and based on rates and allowances for individual investors in the 2025/25 tax year.
The rates are 0%, 15% or. For the current tax year (2025/25), the cgt allowance is ยฃ3,000.