Three-Way Matching
Three-Way Matching is an accounts-payable control that verifies a supplier's invoice against two other documents before it is approved for payment: the purchase order (what was ordered and at what price) and the goods receipt note (what was actually received). Only when all three agree on the items, quantities and prices is the invoice passed for payment.
The check catches overbilling, price discrepancies, quantity errors, duplicate invoices and billing for goods never received — protecting the organisation from paying for things it didn't order or receive, whether through error or fraud. Where a matching field is within an agreed tolerance, systems can auto-approve; exceptions are flagged for review. (A two-way match compares just PO and invoice; a four-way match adds inspection/acceptance.) Automated three-way matching within ERP and procure-to-pay systems is a cornerstone of financial control and a major efficiency gain over manual checking, and it is why disciplined PO and goods-receipt data matter.
Three-way matching is what stops an organisation paying for goods it never ordered or received — the frontline defence against overbilling, duplicate invoices and supplier fraud. Automating it turns a tedious manual check into a fast, reliable control, which is why it anchors financial governance in every procure-to-pay and ERP system.
Which three documents are matched?
The purchase order, the goods receipt note and the supplier invoice — checked to agree on items, quantities and prices before payment.
What does three-way matching prevent?
Overbilling, price and quantity errors, duplicate invoices and payment for goods never received.