On Sales, log each invoice with its taxable amount and output VAT at 16% and the gross are worked out. On Purchases, log each ETR tax invoice and input VAT at 16% fills in. The Monthly Summary works out output VAT minus input VAT for every month, your VAT payable or a credit, and the Filing Checklist reminds you the VAT3 return is due by the 20th of the following month and flags any month overdue.
Yellow cells are your only inputs and every total is a locked formula. The premium version adds a dashboard of output versus input VAT and net payable by month, a quarterly analysis, and a printable A4 monthly VAT summary to prepare your VAT3 figures. This is a preparation aid, not tax advice, and holds no data on our side. Opens in Excel, WPS or Google Sheets.