How this calculation works
Multiply quantity by ex-VAT unit price, subtract the percentage discount from that item subtotal, add ex-VAT delivery, then apply 15% VAT if selected. VAT is rounded on the total taxable value.
A worked example
10 units at R100 less 10% discount gives R900 before VAT. At 15% VAT the total is R1 035.
Assumptions & limitations
- This is a single-line standard-rated total, not a compliant tax invoice or an accounting record. Use the VAT option only for an eligible registered vendor. Exempt/zero-rated items and mixed supplies need separate treatment.
