What is Purchase Order?
The buyer formal commitment to purchase - the document that starts procure-to-pay and controls spend.
Purchase Order: definition
A purchase order formalizes what will be bought before any money moves, giving both sides a clear record and giving the buyer spend control. It anchors the procure-to-pay cycle: the PO is later matched against the goods receipt and the supplier invoice - the three-way match - before payment is approved. This prevents paying for goods never received or at prices never agreed.
- Specifies items, quantities, agreed prices, delivery, and payment terms
- Creates a spending commitment that can be approved before the purchase
- Matched against goods receipt and invoice in the three-way match
- Provides an audit trail from requisition to payment
How Fintra handles it
Fintra can raise and approve purchase orders as part of procure-to-pay, so spend is authorized before it is committed, and later matches the PO to the receipt and the supplier invoice automatically. Discrepancies - price, quantity, or missing receipt - are flagged, and a named human approves any payment that clears the match.
- POs raised and approved before spend is committed
- Automatic three-way match of PO, receipt, and invoice
- Exceptions flagged; a named human approves payment
Worked example
Frequently asked questions
What is the difference between a purchase order and an invoice?
A purchase order is issued by the buyer to request and authorize a purchase before it happens. An invoice is issued by the seller to request payment after delivering the goods or services. The PO comes first and defines the terms; the invoice bills against them.
Is a purchase order legally binding?
Once the seller accepts it, a purchase order generally becomes a binding contract for the goods, quantities, and prices it specifies. Before acceptance, it is an offer. This is why POs are a key spend-control document.
What is the purchase order process?
Typically: a requisition requests a purchase, a PO is created and approved, it is sent to the supplier, goods or services are received, the supplier invoices, and the PO, receipt, and invoice are matched before payment. This procure-to-pay flow controls and documents spend.
Do small businesses need purchase orders?
They help any business that wants control over spending and a clear audit trail, not just large ones. POs prevent unauthorized purchases and billing errors. For small businesses, Fintra makes raising and matching POs lightweight rather than bureaucratic.
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