Accounts payable automation software takes a supplier invoice from arrival to payment: it reads the invoice, codes it, sends it to the right approvers, checks it against the purchase order and the goods receipt, and pays it on the agreed terms. Its aim is that most invoices pass through without anyone keying them.
What it does
Invoices arrive as PDFs, paper scans, e-invoices and portal uploads. The software extracts supplier, amounts, tax and line items, then proposes general ledger codes, cost centres and tax treatment. Invoices against a purchase order are matched to the order and the receipt (the two-way or three-way match); those without one are routed by rules to budget owners. Approved invoices are scheduled for payment by ACH, card, cheque or cross-border transfer, and the payment is posted back to the ledger.
Supplier onboarding is usually part of the product. In the United States that means collecting a Form W-9 with the supplier's taxpayer identification number, which a company needs at year end to file Form 1099-NEC for nonemployee compensation. Many products also screen suppliers against sanctions lists such as those in OFAC's Sanctions List Service and verify bank details to stop payment fraud.
Who uses it
The AP team works the queue of exceptions. Approvers across the company approve invoices, often from email or a phone. Controllers watch accruals for invoices received but not yet approved. Treasury sees the payment schedule.
The parts a typical product has
- Invoice capture: OCR or document AI, e-invoice and portal intake
- Coding suggestions for ledger accounts, cost centres and tax
- Two-way and three-way matching against orders and receipts
- Approval workflows by amount, entity and budget owner
- Supplier onboarding, tax forms and bank account verification
- Payment execution and remittance, including cross-border payments
- Statement reconciliation and duplicate or fraud checks
Where it meets other categories
Purchase orders come from procurement, and several vendors sell both as one procure-to-pay suite. Payments draw on cash that treasury manages. Card spend and employee reimbursements sit in spend and expense management. Postings land in the ERP, and unapproved invoices drive accruals in the close. Indirect tax on purchases touches tax software.
Questions to ask a vendor
- Which ledgers do you integrate with, and is the sync two-way?
- What share of invoices needs a person to touch it, and how is that measured on our data?
- How are new supplier bank details verified before the first payment?
- Do you collect W-9s and prepare 1099 data, and for which other countries do you handle tax forms?
- Do you make the payments yourself, or does the payment run through our bank?
- How is the float on payments handled, and who earns any card rebate?