A 3 way match in accounts payable is a verification process used to confirm that a supplier invoice is accurate before payment is approved.
The process compares three documents:
- Purchase order (PO) — what was ordered
- Goods receipt — what was delivered
- Supplier invoice — what the supplier billed
If quantity, pricing, and terms match across all three documents, the invoice is approved for payment. If the documents do not match, the invoice is flagged and investigated before payment is issued.
The concept is straightforward. The operational reality is not.
Manufacturers and distributors operate in environments where purchase orders change frequently. Delivery schedules move, quantities shift, and pricing updates occur after orders are issued. When those changes are not captured consistently across systems, the documents used in the 3 way matching process fall out of sync.
The result is familiar to procurement and AP teams:
- invoice discrepancies
- manual reconciliation work
- delayed payments
- operational friction between procurement, receiving, and finance
Three-way matching is a key safeguard in the purchase-to-pay (P2P) workflow because it helps prevent:
- duplicate payments
- overpayments
- billing errors
- payment for goods that were never delivered
Understanding where the process breaks—and how to improve it—is the first step toward a more reliable purchase-to-pay workflow.
The Three Documents Required for a 3 Way Match
Purchase Order
The purchase order defines the agreement between buyer and supplier.
It typically includes:
- item descriptions
- quantities
- agreed pricing
- delivery dates
- payment terms
This document establishes the baseline for invoice validation.
When purchase order data becomes outdated or inaccurate, the rest of the matching process becomes difficult. Many organizations reduce invoice discrepancies by improving supplier collaboration around purchase orders.
For example, improving how buyers and suppliers coordinate updates through structured purchase order collaboration helps ensure that changes to delivery dates, pricing, and quantities are captured consistently.
Goods Receipt
Receiving teams document what actually arrives at the facility.
The goods receipt confirms:
- quantity delivered
- delivery date
- condition of goods
If the receiving record differs from the purchase order, the invoice may fail the match.
Partial shipments are one of the most common causes of discrepancies.
Organizations that improve shipment visibility often reduce these mismatches by giving procurement and receiving teams better insight into delivery updates.
Supplier Invoice
The invoice represents the supplier’s request for payment.
Accounts payable must verify that the invoice matches both the purchase order and the receiving record.
This includes checking:
- item quantities
- unit pricing
- invoice totals
- payment terms
If any of these fields differ, the invoice enters an exception workflow for investigation.
The 3 Way Match Process (Step by Step)
In most organizations, the 3 way match process follows six operational steps.
- Purchase order issued: Procurement creates a purchase order and sends it to the supplier.
- Supplier confirms the order: The supplier acknowledges quantities, pricing, and delivery dates.
- Goods are delivered: Receiving teams document what arrives.
- Supplier sends invoice: The supplier submits the invoice to accounts payable.
- Invoice matching occurs: Accounts payable compares purchase order, goods receipt, and invoice.
- Invoice approved or flagged: If the documents match, payment proceeds. If they do not, the invoice is routed for investigation.
Many organizations improve this process by implementing structured purchase order management systems that keep procurement, receiving, and AP working from the same data.
Benefits
Although three-way matching can introduce operational complexity, it provides several important safeguards.
- Prevents incorrect payments: Matching ensures companies only pay invoices tied to legitimate purchase orders and delivered goods.
- Strengthens financial controls: Three-way matching creates a documented audit trail connecting the purchase order, receipt, and invoice.
- Reduces fraud risk: By validating multiple documents, organizations reduce the risk of fraudulent or duplicate invoices.
- Improves procurement accountability: When invoices must match the purchase order, procurement teams are incentivized to maintain accurate PO data.
Organizations that track supplier commitments and performance using supplier scorecards often see improvements in delivery accuracy that reduce invoice discrepancies.
Where the Process Breaks
Most invoice discrepancies do not originate in accounts payable.
They start earlier in the procurement workflow.
Manufacturers regularly experience:
- purchase order updates after issuance
- partial shipments
- supplier price adjustments
- delivery delays
If those changes are not captured consistently, the documents used for matching drift apart.
This creates operational friction across teams:
- procurement must chase suppliers for updates
- receiving teams must clarify quantities
- accounts payable must manually investigate invoice discrepancies
Organizations that improve supplier collaboration and communication typically see fewer invoice exceptions because suppliers confirm order changes earlier.
Common 3 Way Match Errors
Several issues repeatedly cause invoice matching failures.
- Price discrepancies: A supplier may invoice a different price than the original purchase order. Even legitimate contract updates can trigger invoice exceptions.
- Quantity mismatches: If a purchase order requests 1,000 units but the supplier ships 900, the receiving document will differ from the PO. If the invoice reflects the original quantity, the match fails.
- Partial shipments: Manufacturers frequently receive multiple shipments against a single purchase order. When receipts and invoices reflect different shipment quantities, discrepancies appear.
- Unacknowledged PO changes: If suppliers never confirm PO updates, procurement teams operate with outdated information, which often leads to invoice mismatches.
Real Examples
BraunAbility
Mobility transportation manufacturer BraunAbility experienced the operational impact of poor purchase order visibility.
Before improving supplier collaboration, procurement teams managed more than 15,000 SKUs across spreadsheets, dashboards, and email threads.
This fragmented workflow created multiple operational challenges:
- purchase orders were lost or delayed
- suppliers lacked visibility into updates
- pricing discrepancies required manual approvals
After improving purchase order coordination with suppliers, BraunAbility achieved measurable results:
- 30% improvement in on-time delivery
- 22% reduction in inventory
- 98% reduction in pricing variance approvals
Reducing pricing discrepancies dramatically reduces invoice exceptions during the three-way match process.
Ag Leader
Precision agriculture manufacturer Ag Leader faced similar challenges with supplier coordination.
Before improving purchase order visibility, the company struggled with:
- unreliable ERP data
- inconsistent supplier communication
- buyers manually chasing order updates
After improving supplier collaboration around purchase orders, Ag Leader achieved:
- on-time delivery improved from 76% to 99%
- inventory reduced by 32%
- 100% adoption among strategic suppliers
Reliable purchase order commitments help ensure invoices match the purchase order and receiving records.
Automated Invoice Matching
Many organizations implement automated invoice matching software to reduce manual work in accounts payable.
Automation tools compare:
- purchase order data
- receiving records
- invoice information
These systems automatically flag discrepancies and route exceptions for review.
However, automation alone does not solve the root problem.
If purchase order data is inaccurate or supplier commitments are unclear, automation simply surfaces more discrepancies.
Organizations that combine automation with structured purchase order management typically see the greatest improvements in invoice accuracy.
How Manufacturers Improve the 3 Way Match Process
Organizations that reduce invoice discrepancies usually focus on three improvements.
- Improve purchase order visibility: Ensure suppliers acknowledge orders and confirm delivery commitments.
- Capture changes in one system: Avoid managing PO updates through email or spreadsheets. Centralized systems ensure procurement, receiving, and AP work from the same data.
- Reduce manual reconciliation: Automation tools can identify mismatches earlier so teams resolve issues before invoices reach accounts payable.
Companies that also track supplier performance often reduce recurring discrepancies by addressing supplier reliability issues directly.
FAQs
What is the 3 way matching concept?
Three-way matching verifies that the purchase order, goods receipt, and supplier invoice all contain the same quantities and pricing before payment is approved.
What documents are required for a 3 way match?
The required documents are:
- purchase order
- goods receipt
- supplier invoice
What is the difference between 2 way and 3 way matching?
Two-way matching compares the purchase order and invoice, while three-way matching also confirms that goods were received.
| Match Type | Documents Compared | Risk Level |
| 2 Way Match | Purchase order + invoice | Higher |
| 3 Way Match | Purchase order + receipt + invoice | Lower |
Two-way matching is faster but carries greater risk because invoices may be approved without confirming delivery. For manufacturers and distributors, three-way matching provides stronger financial controls.
What should you do if a 3 way match fails?
If the match fails, the discrepancy must be investigated. This may involve verifying delivery quantities, correcting pricing, or updating the purchase order.
Is 3 way matching cost effective?
Yes. Although it introduces additional validation steps, it prevents incorrect payments and reduces financial risk.
What causes most 3 way match failures?
The most common causes include price discrepancies, partial shipments, quantity mismatches, and outdated purchase order information.
The Real Fix for 3 Way Match Problems
Three-way matching protects organizations from invoice errors.
But when purchase order communication is fragmented, the process becomes slow and manual.
Manufacturers that improve purchase order visibility and supplier collaboration typically see fewer invoice discrepancies, faster approvals, and less manual reconciliation.
To see how companies like BraunAbility, Ag Leader, and Viking Yachts improved procurement visibility and supplier coordination, explore the SourceDay customer case studies.
