Buyer guide
PO matching software
Which of 8 AP automation vendors publish verified 2-way and 3-way PO matching, which match at line level, and how to test matching in a demo.
Page reviewed September 30, 2026. Claim-level verification dates appear beside each sourced fact.
Which AP automation software does 3-way PO matching?
BILL, Ramp, Tipalti, Stampli, and Yooz publish verified 3-way matching (invoice, purchase order, and receipt) as well as 2-way matching. Stampli and Yooz describe matching at the line level, which is what catches partial receipts and partial billing. This research found no verified 2- or 3-way matching evidence for Melio, AvidXchange, and Corpay.
Generic "matching" language on a vendor page is not treated as proof of 3-way matching on this site — a row is only marked with a value when the vendor's own page names the matching depth (2-way vs. 3-way) or clearly includes receipts alongside POs and invoices.
Sourced comparison
| Dimension | BILL | Ramp | Tipalti | Stampli | Melio | AvidXchange | Yooz | Corpay |
|---|---|---|---|---|---|---|---|---|
| 2-way matching | Automates 2-way matching (invoice to PO) source, verified 2026-09-07 | 2-way matching (PO to invoice) source, verified 2026-09-07 | Built-in 2-way PO matching source, verified 2026-09-07 | Line-level matching of invoices to POs and receipts source, verified 2026-09-07 | UNKNOWN — not independently verified | UNKNOWN — not independently verified | Automated line-level PO matching source, verified 2026-09-07 | PO generation and matching to invoices (matching depth not confirmed as 2-way specifically) source, verified 2026-09-07 |
| 3-way matching | Automates 3-way matching (invoice, PO, receipt) source, verified 2026-09-07 | 3-way matching (PO, invoice, receipt) source, verified 2026-09-07 | Built-in 3-way PO matching source, verified 2026-09-07 | 3-way matching supported (invoice, PO, receipt) at line level source, verified 2026-09-07 | UNKNOWN — not independently verified | UNKNOWN — not independently verified | 3-way checking (invoice, PO, delivery receipt) source, verified 2026-09-07 | UNKNOWN — not independently verified |
Frequently asked questions
What is the difference between 2-way and 3-way matching?
2-way matching checks the invoice against the purchase order: quantities, prices, and totals. 3-way matching adds the receiving record, so you only pay for what actually arrived.
Why does line-level matching matter?
Header-level matching compares totals; line-level matching compares each item, which is how partial shipments, substitutions, and price changes get caught. Stampli and Yooz describe line-level matching in their sourced claims.
How do I test PO matching in a demo?
Bring your own difficult cases: a partial receipt, a price variance inside and outside tolerance, an invoice that spans two POs, and a credit memo. The AP Vendor Evaluation Kit includes a difficult-workflow demo proof test for exactly this.
Use a comparable evaluation brief
Document accounting system, invoice volume, entity and currency needs, PO matching, approvals, OCR, payments, vendor onboarding, company size, and implementation budget.
Related guides
- How invoice processing automation works
- AP automation for NetSuite
- Best AP automation software compared
- AP Vendor Evaluation Kit