As well as the onscreen receipt, two emails will confirm a successful submission. If these do not arrive please check your spam box as well as the email address entered on your tax return. One email will come directly from HMRC while the other will arrive via the Ftax server. This second email will have a ‘success’ attachment that can be read in a text editor and should be retained as proof of submission. Be sure you don’t submit an Amended return before you have successfully submitted a New return.
One way to double check you have submitted successfully is to submit again as New. If you have already submitted successfully then an error message will tell you so.
But most importantly, always check that your submissions have been accepted by logging in to your HMRC account at https://online.hmrc.gov.uk/home. There will be a two working day delay from the time you submit to when the website is updated.
It is your responsibility to ensure that the tax return has reached and been accepted by HMRC before the deadline.