Back dating a locked purchase

My accountant is retiring so I’m switching from using his system to Quickfile. I have an invoice (from the accountant) on Quickfile with a current tax year date which my accountant applied to the previous tax year. As it’s been used for VAT I can’t change it - so how can I remove it from this years expenses?

You could either credit note the invoice or reverse the entries with a journal like this:

The above journal assumes an invoice value of £120 and an invoice date of 28th March. You also need to change the category on the first line to reflect the actual code the invoice is posted to.

If you credit note it will end up on the next VAT return as a reversal so journalling would be the best option in my opinion.