One of the most practical places to introduce automation is the accounts payable processing cycle. Lots of repetitive tasks, many approval steps, and a steady flow of invoices make AP automation a favorite with businesses across every industry. What is AP automation and how does it differ from its cousin Procure-to-Pay? What are the benefits and how can you select the best application for your organization?

AP Automation vs. Procure-to-Pay

The terms AP Automation and Procure-to-Pay get a bit confused. Rightly so, as they’re both related to an organization’s purchasing processes. There’s no single definitive definition of either, but here’s a quick overview highlighting the differences.

AP automation refers to the automation of the processes surrounding receiving, entering, approving, and paying invoices, with the goals of reducing manual handling, paper and postage costs, and streamlining invoice processing. AP automation software often includes document capture and data extraction (including OCR and increasingly AI-assisted capture), approval workflow routing, matching where applicable, and electronic payment capabilities. Whenever and wherever companies can automate routine processes, they gain efficiencies, reduce overhead, and improve accuracy. While AP automation provides these benefits, it does leave a larger portion of the purchasing process unaddressed, and that’s where Procure-to-Pay software comes into play.

Procure-to-Pay software usually includes AP automation functionality, but starts earlier in the process with requisition creation and approval routing, purchase order creation, two- or three-way invoice matching, and budget validation. Some Procure-to-Pay applications go further, providing supplier contract management, inventory control, and vendor self-service portals. Others incorporate AI, machine learning, and robotic process automation to handle exceptions and coding more intelligently. In short, AP automation starts once an invoice is received, while Procure-to-Pay begins much earlier, when someone wants to buy something.

In general, we recommend that companies that use purchase orders consider a Procure-to-Pay approach, not simply AP automation alone. By instituting approvals and workflow routing early, before a purchase order has even been created, companies gain better control over their spending and have the potential for even greater efficiencies and cost savings.

How the Process Works in Practice

Both AP automation and Procure-to-Pay applications work by automating key steps. Below are two high-level examples of what these applications can do.

AP automation: Rather than passing a paper or email invoice around to secure various approvals, the application provides electronic approval routing. You establish routing rules based on variables such as dollar amount, department, vendor, or item classification, and the software routes the invoice to each approver specified in your rule. Modern tools can also extract invoice data automatically, flag exceptions, and reduce rekeying. Once the invoice is approved, it’s flagged as ready to pay. The software may even initiate an electronic payment to the vendor according to the invoice terms.

Procure-to-Pay: An employee or their manager initiates a purchase request (requisition) in the software when they want to make a purchase. That requisition follows its own established electronic approval routing, and when fully approved, the software creates a purchase order. The software may even send the purchase order to the vendor. When the invoice associated with that purchase order arrives, the Procure-to-Pay software can match it to the purchase order and, optionally, a receipt to ensure the right product was invoiced at the agreed-upon price. If everything matches up, the software flags the invoice as ready to pay and, like AP automation applications, may initiate an electronic payment.

Where the Time and Cost Savings Show Up

You’ve likely heard the statistics. Manual accounts payable processing can still cost companies several dollars to more than ten dollars per invoice, depending on process maturity. Recent benchmarks put best-in-class automated processing costs 60-80% lower, often in the range of $2 to $3 per invoice, while less automated processes remain several times higher. For a company processing hundreds of invoices a month, that gap adds up quickly over a year.

Automation does more than lower transaction costs. Cash flow also benefits when companies reduce invoice lifecycle times and improve their ability to capture early payment discounts. Teams also free capacity previously spent on data entry, chasing approvals, and exception handling, so staff can focus on supplier relationships, exception resolution, and higher-value analysis.

Industry surveys continue to show that while most finance organizations have introduced some AP automation, only 4% have fully automated the process from invoice to payment. That leaves meaningful room for improvement for teams still relying on email, spreadsheets, and manual routing.

How to Choose the Right Approach

There are many AP automation and Procure-to-Pay applications available. How can you identify the right one for your organization? You could spend months viewing demonstrations and still end up uncertain. Instead, we’d recommend you work with a partner, like BT Partners, that understands what’s out there and the sometimes subtle yet significant differences between solutions. We can help rule out options that aren’t a good fit and focus on contenders whose functionality aligns with your volume, approval structure, ERP environment, and control requirements.

AP automation and broader spend management tools deliver perennial benefits: faster processing, fewer errors, better visibility, stronger controls, and more time for the work that matters. If you want to explore options that fit your finance team and systems, including solutions that integrate with platforms such as Sage Intacct, talk to our experts.