Capital Gains Tax Calculator UK
Calculate Capital Gains Tax on the profit from selling shares, funds, crypto or property in the UK. See your tax-free allowance, taxable gain and the tax due at basic and higher rates for 2026/27.
Calculator
What this means
Capital Gains Tax is charged on the profit when you sell or dispose of an asset that has risen in value. You get a tax-free annual exempt amount (£3,000 for 2026/27); gains above this are taxed at 18% or 24% depending on your income.
How to use this calculator
- Enter your gain (sale price minus what you paid and costs).
- Enter your income so the right CGT rate applies.
- See your CGT after the annual exempt amount.
Worked example
A higher-rate taxpayer makes a £10,000 gain on shares.
- Deduct the £3,000 annual exempt amount: £7,000 taxable.
- Higher-rate CGT on shares is 24%: £7,000 × 24% = £1,680.
You'd owe about £1,680 in Capital Gains Tax.
Who this is for
- Investors selling shares, funds or crypto.
- People selling a second home or buy-to-let.
- Anyone using their annual CGT exemption.
How Capital Gains Tax works in 2026/27
CGT is charged on the profit when you sell certain assets, not the full amount. Everyone has a £3,000 annual exempt amount; gains above it are taxed at 18% (basic rate) or 24% (higher rate).
Your main home is usually exempt. Gains stack on top of income to decide the rate, and property gains must typically be reported and paid within 60 days of completion.
Frequently asked questions
Since 30 October 2024 the main CGT rates are 18% for gains within the basic-rate band and 24% above it, for shares, funds, crypto and residential property alike.
For 2026/27 the annual exempt amount is £3,000. You only pay Capital Gains Tax on total gains above this in the tax year.
Usually no. Private Residence Relief normally means your main home is exempt. CGT typically applies to second homes, buy-to-let property, shares outside an ISA and other investments.
For 2026/27 it's £3,000. You only pay Capital Gains Tax on total gains above this allowance in a tax year.
Usually not — your main residence normally qualifies for Private Residence Relief. CGT typically applies to second homes, buy-to-lets and investments.
Disclaimer
This calculator provides estimates for guidance only. It is not financial, legal or tax advice. Always check official sources or speak to a qualified professional before making decisions.
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