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Capital Gains Tax Calculator

Estimate the tax on your profits from selling assets in United Kingdom.

Enter Asset Details

All fields are required for an accurate estimation.

Understanding Capital Gains Tax in United Kingdom

The Annual Exempt Amount

For the 2025/2026 tax year, you can make gains of up to £3,000 completely tax-free. This is your CGT allowance. You only pay tax on gains above this amount.

Tax Based on Income & Asset

The rate you pay depends on your income tax band. Basic-rate taxpayers pay a lower rate than higher-rate taxpayers. Additionally, gains from residential property are taxed at higher rates than other assets like shares.

How to Use This Calculator

  1. 1

    Enter Asset Details

    Input the purchase price, selling price, and any associated buying or selling costs.

  2. 2

    Provide Your Details

    Select your income tax bracket to determine the correct tax rate for your gain.

  3. 3

    Review Your Estimate

    The calculator instantly shows your estimated total gain, your taxable gain after allowances, and the final tax payable.

Frequently Asked Questions