The client sold a residential property in 2020/21 and declared & paid CGT on the online system within 30 days. Their 2021 Tax Return has been submitted showing the gain as usual and declaring that the gain had already been reported and tax paid (there are boxes for those figures). The CGT is overpaid as the total income in the year was rather less than the estimate. However the self assessment system does not refund the overpaid capital gains tax and now that the 2021 Tax Return is lodged we cannot get back into the online CGT reporting to amend that report. Inland Revenue do not seem to know how we can get the overpayment back. Does anyone out there know?