Capital Gains Tax Calculator

You calculate Capital Gains Tax by taking your sale price, deducting the original purchase price, allowable costs and your annual exempt amount, then applying the 18% or 24% rate depending on your income band and asset type. Our capital gains tax calculator UK tool automates this using current 2026/27 HMRC rates.

The annual exempt amount for 2026/27 is 3,000 pounds per individual. Any gains above this threshold are subject to Capital Gains Tax at 18% or 24%, depending on your total taxable income and the type of asset disposed of.

Most people do not pay Capital Gains Tax when selling their only or main residence, thanks to Private Residence Relief. This may not apply in full if you let out part of the property, used it for business, or lived elsewhere for periods of ownership.

From April 2024, UK Capital Gains Tax is charged at 18% for basic rate taxpayers and 24% for higher and additional rate taxpayers, applying across residential property, shares and other chargeable assets.

Yes. Common legal strategies include using your annual exempt amount, transferring assets between spouses, offsetting allowable losses, claiming reliefs such as Business Asset Disposal Relief, and timing disposals across tax years.

A capital gains tax calculator UK tool like ours gives a reliable estimate based on the figures you enter and current HMRC rates, but it cannot account for every relief or personal circumstance, so we recommend a specialist review before filing.