An option to change the VAT calculation from the current (VAT calculated per product then rounded and summed), to be calculated from the gross total of all similar tax codes.
Currently a gross total x 0.2 (20% VAT) can sometimes give a different VAT value to the Sage calculated value. (from the sum of the rounded product tax values), normally a penny out.
This is an issue when importing or entering invoices calculated from a system that uses the more normal Tax calculated from the gross total.
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