Full guide coming soon

Capital Gains Tax on Property 2026/27

Selling a rental property can trigger a Capital Gains Tax (CGT) bill on the profit you've made - and the rules around it catch many landlords off guard, particularly the requirement to report and pay within 60 days of completion, rather than waiting for the usual Self Assessment deadline.

The amount of CGT you owe depends on your gain after deducting allowable costs (such as legal fees, agent fees, and certain improvement costs), any Private Residence Relief if the property was ever your home, and the £3,000 annual exempt amount. What's left is then taxed at 18% or 24%, depending on your other income for the year - and the calculation can get more complex if your income straddles the basic-rate threshold.

This guide walks through exactly how the calculation works, what costs you can and can't deduct, how Private Residence Relief is worked out if you ever lived in the property, and - critically - what you need to do to meet the 60-day reporting deadline and avoid penalties.

The full guide will cover:

  • How to calculate your taxable gain, step by step, with worked examples
  • What counts as an allowable cost - and common mistakes landlords make
  • How Private Residence Relief works if the property was ever your home
  • The 60-day reporting deadline: what to do, and the penalties for missing it
We're writing this guide in full now. Join the launch mailing list on the homepage to be notified when it's published, or browse our calculators and other guides in the meantime.
← Back to home