How do I report capital gains to HMRC?

Gains on UK residential property must be reported via HMRC’s online Capital Gains Tax service within 60 days of completion, with the tax paid at that point. All other capital gains are reported on your annual self-assessment tax return, with the tax due by 31 January following the end of the tax year. We prepare CGT calculations, complete 60-day returns where required, and report all gains correctly on the self-assessment return.