Calculators/Capital Gains Tax Calculator 2025/26

Capital Gains Tax Calculator 2025/26

Calculate capital gains tax on shares, property, and business assets. Enter purchase price, sale price, and costs — the calculator applies the £3,000 annual exempt amount, splits your gain across basic and higher rate bands, and shows your total CGT bill.

Tax logic approved by our ACCA/CTA-qualified co-founders. Meet the team.

All asset types now share 18%/24% CGT rates. Business assets may qualify for 14% BADR.

£

Your taxable income this year — determines how much of the basic rate band is left for your gain

£

What you paid for the asset (original cost)

£

What you sold (or expect to sell) the asset for

£

Legal fees, estate agent fees, stamp duty, improvement costs — all reduce your gain

£

Capital losses carried forward from previous tax years — offset your gain before the annual exemption

Frequently asked questions

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AI-generated guidance, not professional tax advice. Tax rates for 2025/26 tax year. Contains public sector information licensed under the Open Government Licence v3.0.