Capital Gains Tax Calculator
Estimate the Capital Gains Tax due on a gain from selling property or other assets. Enter the gain, the asset type and your taxable income to see how much falls in the basic-rate band and how much in the higher band.
Estimate only. 2026/27 estimate, verify with gov.uk/HMRC; not tax advice.
Enter your gain and income
Your Capital Gains Tax bill appears here as you type.
How Capital Gains Tax is calculated
You pay Capital Gains Tax on the profit when you sell or otherwise dispose of an asset that's increased in value, not on the total amount you receive. Every individual has a £3,000 tax-free annual exempt amount for 2026/27. From 30 October 2024, gains on both residential property and other assets such as shares are taxed at 18% within your remaining basic-rate band and 24% above it, so how much of your basic-rate band is left after your income determines the split. Gains on your main home are usually exempt under Private Residence Relief.
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