UK Capital Gains Tax Calculator 2026/27
Calculate UK Capital Gains Tax for 2026/27: the £3,000 allowance, 18% in the basic rate band left after your income, 24% above it, losses and BADR.
2026/27: £3,000 allowance; 18% within the basic rate band left after your income and 24% above it, the same for property and shares. Your main home is usually exempt (Private Residence Relief). Report and pay on UK property within 60 days of the sale.
What it does
Capital Gains Tax is paid on the profit when you sell or give away shares, a second home, a business or other assets. Your gains above the yearly allowance are added on top of your taxable income: the part that fits in the basic rate band pays 18% and the rest 24%.
How to use it
- Type your income for the year, without the gains.
- Type your total gains and any losses of the same year; tick the box for Business Asset Disposal Relief.
- See the tax and how much of the gain pays 18% and 24%.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
How much Capital Gains Tax will I pay?
With taxable income of £20,000 and gains of £52,600: £3,000 is tax-free, £17,700 pays 18% and £31,900 pays 24%, so £10,842.
What is the Capital Gains Tax allowance for 2026/27?
£3,000 (£1,500 for trusts). With £20,000 of taxable income and £12,600 of gains you pay 18% on £9,600: £1,728.
What is the rate with Business Asset Disposal Relief?
18% from 6 April 2026 (14% in 2025/26), on up to £1 million of qualifying gains in your lifetime.
π· UK Dividend Tax Calculator 2026/27
π¬π§ UK Take-Home Pay Calculator
π UK Inheritance Tax Calculator 2026/27
π Stamp Duty Calculator (UK)