Many homeowners assume that if a property has been their main residence at some point, any gain made on sale will automatically be free from Capital Gains Tax (CGT). Whilst in many cases, this is correct there are exceptions. For example, periods spent living away from your home can sometimes reduce the amount of Private Residence Relief available.

The good news is that some periods always qualify for relief. In most cases, the final 9 months of ownership are automatically exempt, provided the property was your only or main residence at some stage. There can also be relief for up to the first two years of ownership where a property was being built, renovated or where you were unable to move in immediately.

Additional relief may also be available where you temporarily lived elsewhere. Absences of up to three years for any reason can qualify, while periods of up to four years may qualify where you had to work elsewhere in the UK. Time spent working overseas can also qualify for relief in full. Normally, you must have lived in the property before and after the absence unless your work prevented your return.

Where more than one property is owned, the rules become more complicated as generally only one property can qualify as your main residence at any one time. Married couples and civil partners are also normally restricted to one main residence between them.

These rules can have a significant impact on the amount of CGT payable when a property is sold, particularly where second homes or lengthy absences are involved.

How capital gains are linked with Income Tax is important to understand as your overall income position affects the Capital Gains Tax (CGT) rate you pay.

CGT interacts directly with your Income Tax band. Your taxable income is first calculated after deducting your Personal Allowance and any Income Tax reliefs. Your chargeable capital gains are then added on top, after subtracting the annual tax-free CGT allowance (2026-27: £3,000). This determines whether your gains fall within the basic or higher rate Income Tax band, which determines the CGT rate that applies.

For individuals in the higher or additional rate Income Tax band, capital gains are usually taxed at 24% from 6 April 2026. Basic rate taxpayers will initially pay CGT at a rate of 18% but this increases to 24% for any amount of chargeable gain above the basic Income Tax band.

Gains on certain assets are treated differently. Gains on business assets may qualify for Business Asset Disposal Relief at a rate of 18% and most people do not pay CGT when selling their main home. Trustees and personal representatives typically pay a flat 24% CGT rate.