Estimate the Capital Gains Tax due on a gain, after your tax-free annual exempt amount. This is an estimate for general guidance only, not personalised tax advice — talk to Buzz for advice specific to your situation.
Rates depend on your income, not just your gain.
Which CGT rate applies depends on how much of your basic-rate Income Tax band is left once your other income is taken into account. Add your other taxable income below for a more accurate split, or pick a band for a simpler estimate. Talk to Buzz for the exact figure, especially for property or business disposals with reliefs attached.
Enter the gain details
Enter your gain, then click Calculate to see an estimate.
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Rates used in this calculator (2026/27 tax year)
Capital Gains Tax
Rate
Annual exempt amount
£3,000 tax-free
Within your basic-rate band
18%
Above your basic-rate band (higher/additional rate)
24%
These rates apply to most gains, including residential property, for individuals. Business Asset Disposal Relief can reduce the rate to 18% on qualifying business gains up to a £1 million lifetime limit — not included in this calculator; ask Buzz if this might apply to you. Source: gov.uk Capital Gains Tax rates and allowances page, checked July 2026.
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