Free calculator · 2026/27
Capital gains tax calculator for 2026/27.
Estimate the capital gains tax on selling property, shares or other assets using the 18% and 24% rates and the £3,000 annual exempt amount.
- Updated for 2026/27 rates
- Free, no sign-up
- Instant results
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Tax year
2026/27
Rates last reviewed November 2026
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How capital gains tax is calculated
Take your sale proceeds, subtract what you paid and allowable costs, then deduct losses and the £3,000 annual exempt amount. The rest is taxed at 18% within your basic rate band and 24% above it.
Business Asset Disposal Relief
Qualifying gains on selling a business can be taxed at 18% on up to £1 million over your lifetime, instead of the standard rates.
Worked example
See it with real numbers
Selling for £350,000 an asset bought for £250,000, with £10,000 of costs, gives a £90,000 gain. After the £3,000 exemption, with £45,000 of other income, the tax is about £20,564.
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Selling property or shares?
We calculate your gain and report it to HMRC on time.
FAQs
Capital Gains Tax Calculator: your questions answered
Short, straight answers. Still unsure? Call us on 020 3441 1258.
18% within the basic rate band and 24% above it, on all assets including residential property.
£3,000 per person for 2026/27.
Usually not, because of Private Residence Relief.
UK residential property sales usually must be reported and paid within 60 days of completion.
Let us handle the tax for you
Fixed fees, paid online. Call 020 3441 1258 or get your quote now.
Prices last reviewed November 2026. Cheap Accountants in London is a trading style of ACCOTAX London Ltd.