UK Capital Gains Tax Calculator

Estimate UK Capital Gains Tax owed after the annual exempt amount, based on your income tax band.

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How it works

Everyone has a tax-free Capital Gains Tax allowance (the annual exempt amount) each year. Gains above that are taxed at 18% if you're a basic-rate taxpayer or 24% if you're a higher/additional-rate taxpayer (rates shown are for most assets excluding residential property, which has its own rates).

Illustrative estimate only, using simplified/rounded 2026/27 UK figures — not tax advice. Always confirm with HMRC or a qualified UK tax adviser.