How Two-Way Matching Works
The workflow starts when an approved purchase order establishes the expected commercial terms. When the vendor invoice arrives, invoice processing captures the relevant information and compares it with the purchase order stored in Sage Intacct. Matching rules then determine whether the invoice falls within approved tolerances.
- Identify the supplier and related purchase order.
- Compare invoice quantities with ordered quantities.
- Compare invoice prices with purchase order prices.
- Validate line amounts, currency, taxes, and applicable terms.
- Route differences according to defined approval rules.
For example, if a purchase order authorizes 100 units at $25 each and the invoice contains 100 units at $25 each, the two-way match supports approval because the principal commercial details agree. A price or quantity variance can instead trigger an appropriate review.
Two-Way Matching vs. Three-Way Matching
The primary distinction is the number of source documents used for validation. Two-way matching compares the purchase order and invoice. Three-way matching adds a receipt or receiving record to confirm that goods or services were received.
Two-way matching is often appropriate when the purchase order itself provides sufficient authorization, particularly for professional services, software subscriptions, utilities, retainers, and recurring expenses. Three-way matching can provide an additional receiving-based validation for physical goods where quantities received are important.
Organizations can use Tailored Matching Policies: Optimize Vendor Invoice Processing to understand how matching rules can be adapted according to vendor type, transaction value, or accounting requirements rather than applying identical rules to every invoice.
Key Controls and Approval Rules
Effective two-way matching depends on clearly defined tolerance rules. A business may allow a small price variance while requiring approval for larger differences. Quantity controls can similarly distinguish between acceptable adjustments and transactions that require procurement review.
Invoice matching can validate invoice data against purchase order information before posting. An Invoice Matching Approval establishes a formal decision point when the match requires authorization, while Accounts Payable Matching Approval supports accountability within the broader AP workflow.
Accounting classification is another important consideration. Once the commercial information is validated, the invoice should be assigned to the appropriate expense, asset, project, department, or other accounting dimension. Accurate coding helps ensure that the resulting financial reporting reflects the underlying purchase.
Role in Accounts Payable Automation
AP Automation Software can connect invoice capture, purchase order retrieval, matching, approval, and payment preparation within a coordinated workflow. This enables matching rules to be applied consistently while maintaining transaction information for review and audit purposes.
The quality of purchasing data also influences matching effectiveness. Strong vendor management helps maintain accurate supplier records, while disciplined procurement practices ensure that purchase orders contain complete quantities, prices, terms, and accounting information.
For a broader perspective on AP workflows, How Vendor Portals Improve Invoice Transparency explores how invoice status information can support communication between suppliers and finance teams during processing and approval.
Business Impact and Payment Readiness
Two-way matching helps finance teams establish whether a vendor liability is supported by an approved purchasing commitment before cash leaves the business. Once an invoice passes the relevant controls, it can proceed toward payment according to the organization's terms and cash management policies.
For accounts payable, matching is closely connected with supplier payment timing, approval controls, and cash outflow management. A validated invoice provides a stronger basis for scheduling payments because the payable has already been compared with the authorized purchase.
A Payment Matching Approval can provide an additional control at the settlement stage, ensuring that payment activity remains connected to the invoice and its underlying purchasing record.
Best Practices for Sage Intacct Two-Way Matching
- Standardize purchase orders: Capture complete vendor, quantity, price, currency, and accounting information.
- Define tolerances: Establish acceptable price and quantity differences based on transaction characteristics.
- Segment approval rules: Use appropriate authorization thresholds for departments, vendors, and transaction values.
- Maintain audit trails: Preserve the relationship between purchase orders, invoices, matching decisions, and postings.
- Review exception patterns: Use recurring variances to improve purchasing terms and supplier communication.
Organizations can also use two-way matching as part of a broader AP operating model in which invoice validation, accounting classification, approval, and settlement follow a consistent sequence. This approach supports cleaner records and more predictable financial operations.
Summary
Sage Intacct Two-Way Matching compares a vendor invoice with its purchase order to verify that billed commercial details align with authorized purchasing terms. It is particularly useful when a separate receiving document is unnecessary, such as for services and recurring expenses. With appropriate tolerances, approval rules, accurate purchasing data, and connected AP workflows, two-way matching supports stronger financial control, efficient invoice handling, and informed cash flow management.