The 60-day CGT reporting rule
Since 27 October 2021, UK residents selling residential property with tax to pay must report and pay within 60 days of completion.
Updated for the 2026/27 tax year · Reviewed against HMRC guidance
When the clock starts
The 60 days run from the completion date, not exchange. The gain itself falls into the tax year of exchange, but the return deadline is tied to completion.
Penalties and interest
A late return attracts a £100 penalty, rising to 5% of the tax (or £300 if greater) after 6 and 12 months. Late payment interest runs from day 61.
How to file
Create a Capital Gains Tax on UK property account via GOV.UK using your Government Gateway login, then submit and pay using the reference generated.
Frequently asked questions
This guide is general information based on the Taxation of Chargeable Gains Act 1992 and HMRC guidance (including HS283). It is not personal tax advice — for complex cases speak to a qualified tax adviser.