United Kingdom · correction
Correct a UK Self Assessment property return
Use the amendment window when open and a different claim route when it is not.
Direct answer
HMRC permits eligible Self Assessment amendments within the published window. Recover the original return, correct the property and residence pages consistently, and keep the revised calculation and acknowledgement.
Working route
Reconstruct the original filing
Compare the submitted return, HMRC calculation, NRLS credit and payment account before changing figures.
Amend through the supported channel
Use the same compatible software or authorised route where possible and verify that every affected page is updated.
Handle older years separately
If the online amendment window has closed, follow HMRC’s written correction or overpayment-relief guidance for that year.
Hard stop
An enquiry, discovery assessment, penalty, residence dispute or closed statutory period merits professional review before responding.