UK Capital Gains Tax Calculator

Finance guide

How to use the UK Capital Gains Tax Calculator

Estimate annual exempt amount usage, gains after losses, residential-property treatment, and basic or higher-rate CGT bands. The page also explains the UK Capital Gains Tax Calculator calculation method and shows a practical example: Enter a representative tax scenario for United Kingdom, review every editable rule, and compare the estimate with current official guidance for Tax year 2026/27.

  1. 1

    Enter your details

    Enter the values for the uk capital gains tax calculator scenario you want to check.

  2. 2

    Check the calculation

    Review the result alongside the UK Capital Gains Tax Calculator calculation method: UK Capital Gains Tax Calculator estimate = applicable base amounts adjusted by the entered rates, thresholds, allowances, credits, caps, and prior payments.

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the UK Capital Gains Tax Calculator result before you use the estimate.