You can add new VAT codes or change exiting ones by following the steps below:
Select System, VAT Rates on the ribbon menu, or System Control, VAT Rates on the classic/module menu.
To Edit an existing code, select the relevant code from the list, followed by Edit.
To Add a new code, click the Insert button.
Change or add the relevant details to the code.
Click Save.
Note: If you're setting up a new VAT code you need to set the criteria for how the VAT code updates the VAT Return before you save the record.