Question to the HM Treasury:

To ask His Majesty's Government what assessment they have made of the length of time it takes for His Majesty's Revenue and Customs to calculate capital gains tax returns.

The vast majority of Capital Gains returns are filed online, through entries in a Self-Assessment Tax return or our online service for sale of a property which is not the main residence. Taxpayers using online services are presented with their tax calculation immediately, unless there are any exceptions requiring a manual check. For the small numbers of 2022-23 tax returns requiring manual checks, HMRC will complete these by 31 January.

For customers who file their self-assessment return on paper, HMRC aim to process 99% of returns received by the 31 October submission deadline by 31 December. They expect to meet that target this year.