Enquiry and amending return

[Taf]

Can you please clarify if it is possible to amend a return for a particular set of tax years during an enquiry or after an enquiry has closed. What are the likely consequences.

[Simon Sweetman]

Technically, the return for a year under enquiry cannot be amended until the end of the enquiry. Of course that does not mean that you cannot notify HMRC of changes that are required, and that is what you would do. I am not sure what you have in mind when you ask about consequences, but if what you want to do is admit that something is wrong, then the sooner the better : a voluntary disclosure will reduce the level of possible penalties.