Capital Gains Tax Calculator 2026/27
Tax on gains from selling shares, property or other assets.
Your details
For example legal fees, stamp duty or broker fees.
Before tax, after pension contributions taken from pay.
Capital Gains Tax
£4,423.80
2026/27 tax year
- Gain
- £24,000
- Annual exempt amount
- −£3,000
- Taxable gain
- £21,000
- At 18% (within your basic rate band)
- £10,270
- At 24%
- £10,730
- Tax to pay
- £4,423.80
Your main home is usually exempt. Gains on UK residential property must be reported and paid within 60 days of completion. Shares in an ISA are free of CGT. This is a simplified estimate: check HMRC guidance for your situation.
How it is worked out
- 1The gain is the sale price minus what you paid and the costs of buying, selling and improving the asset.
- 2The first £3,000 of gains in the tax year is tax free, after losses are taken off.
- 3Gains are added on top of your income: the part within your basic rate band is taxed at 18%, and the rest at 24%.
- 4Business Asset Disposal Relief, where it applies, taxes qualifying gains at 18%.
Worth knowing
- Your main home is usually exempt through Private Residence Relief.
- UK residential property gains must be reported and paid within 60 days of completion.
Common questions
What are the Capital Gains Tax rates for 2026/27?+
18% for gains within your basic rate band and 24% above it, for all assets including residential property.
Sources
The rules and figures behind this calculator come from:
Results are simplified estimates using 2026/27 rates. They are not tax advice. Reliefs, losses and reporting rules can change the amount; check HMRC guidance or an accountant.
Embed this calculator on your website
Free to use on any website. Copy this code into your page. It shows the calculator with a link back to this page.