Automate 3-Way Invoice-to-PO Matching
Accounts payable teams still reconcile invoices against purchase orders and goods-receipt notes largely by hand, opening three systems side by side and eyeballing quantities, unit prices and line totals. A single vendor invoice covering a partial delivery, a split shipment or a price amendment can take an experienced clerk fifteen to twenty minutes to trace back to the right PO line. At volume, this becomes the single biggest bottleneck in the pay cycle: invoices sit in a queue waiting for a human to confirm they tie out, vendors chase for payment status, and month-end close slips because nobody can say with confidence how many invoices are still unmatched versus genuinely disputed.
STARTING PRICE
From €299
Standard tier · Multi-step workflow with AI extraction/decisioning and 2-3 integrations.
Get a quote →Saves roughly 6-10 hrs/week for a mid-sized AP team.
How the automation works
We connect your AP inbox or scanning tool to your ERP or accounting platform and build an automated 3-way matching pipeline: invoice data is extracted, matched line-by-line against the originating purchase order and the goods-receipt note, and either posted straight through or routed to a reviewer with the specific discrepancy already highlighted. Tolerance bands handle routine rounding and freight variances automatically instead of stopping every invoice with a one-cent difference. The system keeps a full audit trail of every match decision, so your finance team and auditors can see exactly why an invoice cleared or why it was held, without reconstructing the reasoning after the fact.
Process flow
- 01
Invoice received trigger
A new vendor invoice arrives by email, EDI feed or scanned upload and triggers the pipeline automatically — no manual queue entry required.
- 02
Extract line items ai
AI extraction reads vendor name, PO reference, line items, quantities, unit prices and tax from the invoice, regardless of layout or vendor template.
- 03
Match to PO integration
The system pulls the referenced purchase order from your ERP and matches each invoice line to the corresponding PO line by item code and quantity.
- 04
Match to receipt integration
Goods-receipt or service-completion records are checked to confirm the billed quantity was actually received before payment is approved.
- 05
Score match confidence ai
A confidence score is assigned per line; anything inside tolerance auto-clears, anything outside it is flagged with the specific variance explained in plain language.
- 06
Post or route for review output
Clean matches post directly to your accounting system for payment; exceptions route to the right AP reviewer with the mismatch pre-annotated, not just a rejected invoice.
Inputs
- Vendor invoice (PDF, email, EDI)
- Purchase order records
- Goods-receipt / service-completion records
- Vendor master data
Outputs
- Matched invoice ready for posting
- Exception queue with annotated discrepancies
- Audit trail of match decisions
- Payment-ready batch for your ERP
Works with
Prefer a fully custom build instead of an off-the-shelf integration? We scope both options during your free consultation — most jobs like this one work fine on standard connectors, but higher-volume or non-standard systems sometimes need bespoke API work, reflected in the complex tier.
Where this goes wrong if you get it wrong
- Partial shipments and split deliveries break naive one-to-one line matching — the system needs to match cumulative quantities across multiple goods receipts against a single PO line, not just the most recent receipt.
- Price amendments issued after the original PO but before the invoice are a common source of false mismatches; the pipeline needs to check for approved PO revisions before flagging a price variance as an exception.
- Never auto-post a match below your confidence threshold purely to clear the queue faster — an incorrectly matched invoice that gets paid is far more expensive to unwind than one sitting in an exception queue for review.
- Freight, handling and small currency-rounding differences should be tolerance-banded per vendor rather than globally, since a 2% freight variance is routine for one supplier and a red flag for another.
Frequently asked questions
How accurate is automated invoice-to-PO matching?
Extraction and line-level matching typically reach 95%+ accuracy once tuned to your vendor mix, with the remaining cases routed to a human reviewer rather than guessed at — the point is to eliminate manual work on the clean 90%+ of invoices, not to force zero human involvement.
What happens when an invoice doesn't match any PO?
It's routed to an exception queue with the closest candidate POs suggested, so a reviewer can resolve it in seconds instead of searching the ERP manually — nothing posts automatically without a match.
Does this work with partial deliveries and split invoices?
Yes — the matching logic tracks cumulative received and invoiced quantities against each PO line over time, rather than assuming one invoice maps to one delivery.
Can it integrate with our existing ERP instead of replacing it?
Yes, this sits on top of Xero, QuickBooks, NetSuite, SAP and similar systems via their APIs — we're automating the matching workflow, not replacing your accounting system of record.
How long does implementation take?
A standard-tier build for one entity and one or two ERP integrations typically takes 3-5 weeks from kickoff to your first automated matches, depending on how standardised your PO and vendor data already are.