Purchase order vs Receipt: what each one is for
The purchase order commits the buyer to purchase specific goods or services at agreed prices and terms. The receipt proves that payment was made, how much, when and by what method. Put side by side, the two documents have different senders, different moments and different legal weight, and this page walks through each difference with a worked scenario.
Side by side
| Purchase order | Receipt | |
|---|---|---|
| Issued by | the buyer | the seller |
| Sent to | the seller | the buyer |
| Stage in the flow | 3 — commitment | 8 — proof of payment |
| What it does | commits the buyer to purchase specific goods or services at agreed prices and terms | proves that payment was made, how much, when and by what method |
| Commitment | binding once accepted | acknowledges payment |
| Requests payment? | no | no |
| Proves delivery? | no | no |
| In the accounts | a commitment, recorded as an open PO, not yet a liability | closes the receivable for the seller and supports the buyer's expense claim |
| Lifetime | stands until fulfilled, cancelled or its delivery date passes | permanent proof of payment |
| Make one with | Purchase Order Generator | Invoice Maker |
The deciding difference
The purchase order opens a transaction and the receipt closes it. The PO is the buyer promising to pay for something specific; the receipt is the seller confirming that the payment for it arrived. A buyer's file should hold both, with the delivery note and the invoice in between.
Legal weight is the cleanest separator. The purchase order is binding once accepted: Once the seller accepts it, the PO is a contract to buy the listed goods at the listed prices; it is not itself a demand for money. The receipt is acknowledges payment: Confirms that money changed hands for a specific invoice or sale; it is proof for the buyer, not a request.
Where each one sits in the flow
The purchase order is issued at stage 3 and the receipt at stage 8 of the eight-step order-to-cash sequence. The steps between them, if any, are the documents that normally connect the two:
- 3. Purchase order (this page) — The buyer's formal order: what, how many, at what price, delivered where and when.
- 4. Proforma invoice — A preliminary invoice sent before delivery, used for prepayment and customs, not for the books.
- 5. Delivery note — What was in the box, signed for by whoever received it.
- 6. Invoice — The bill: what was supplied, what is owed, by when, and the tax on it.
- 7. Credit note (if needed) — A negative invoice that cancels or reduces an earlier one.
- 8. Receipt (this page) — Proof that an invoice was paid: amount, date and method.
Steps before the purchase order and after the receipt are on the business documents hub, which shows the full eight-step sequence with a checklist for every document.
Worked scenario
Harbour Café raises PO-2026-0142 in September and files receipt RCP-2301 in October. Between them sit the delivery note and the invoice. When the café's accountant prepares the year-end, the four documents show the order was authorised, delivered, billed and paid, and the expense is beyond question.
Can one replace the other?
Neither replaces the other. The purchase order has to exist before the receipt makes sense, and a file that holds one without the other has a gap an auditor will ask about. Businesses that skip the purchase order usually discover why the first time a receipt is disputed.
Numbering and matching
Both carry their own number. Purchase order: The buyer's number; suppliers are expected to quote it on the delivery note and the invoice so accounts payable can match the three documents. Receipt: Numbered, and it names the invoice or sale it settles. The reference from one to the other is what lets an accounts team match documents without phoning anyone.
Common mistakes
Two habits cause most of the trouble. First, paying an invoice that has no matching purchase order, which is how duplicate and unauthorised spend slips through. Second, using an invoice marked 'paid' as the receipt without stating the date and method of payment. Each is avoidable with a template that carries the right fields and a rule about which document comes first.
Checklists: what to include in a purchase order and what to include in a receipt.