How much can I make before I have to pay Capital Gains Tax?

For 2025/26, the Annual Exempt Amount is £3,000 per person. You can make gains up to this amount across all your assets in the tax year without paying any CGT. If you own assets jointly, each person gets their own £3,000 allowance — so a couple selling a property together effectively has a combined £6,000 exempt amount. Gains above the threshold are taxed at 18% (basic rate) or 24% (higher rate). The allowance has fallen significantly in recent years (it was £12,300 in 2022/23), so even modest gains can now result in a tax liability.