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Capital Gains Tax Calculator

Estimate tax on an individual asset disposal after allowable costs, losses and your remaining annual exemption.

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For individual disposals

The 2026/27 individual annual exempt amount is £3,000. Ordinary gains, including residential property gains, are taxed at 18% to the extent they fit in the unused basic-rate band and 24% above it.

Enter only your ownership share and the exemption still available. Costs must qualify for deduction. Allocate losses according to HMRC rules; this tool does not choose how to use losses across multiple disposals.

Excludes main-home relief calculations, Business Asset Disposal Relief, trusts, carried interest and foreign-income-and-gains relief. An exempt disposal should not be entered as taxable. See HMRC rates and method and annual exemptions.

Tax year: 6 April 2026 to 5 April 2027. See our 2026/27 tax rates and sources. This is an estimate under the assumptions above, not a tax return or individual advice.

Calculations run in your browser. Your entries are not stored or sent to us.