Most finance teams do not choose a slow payables process. They inherit one: invoices arrive in several inboxes, someone retypes the details, approvals travel by email, and a spreadsheet tracks what is due. Each handoff adds delay and a chance for error.
This guide shows how to automate accounts payable in five steps, with attention to approvals, matching, and payments, so your team can spend less time on data entry and more time on review.
What is accounts payable automation?
Accounts payable automation uses software to handle the repeatable parts of the accounts payable process: capturing invoice data, routing bills for approval, checking them against purchase orders, scheduling payments, and syncing results to the ledger. People stay in charge of decisions. Software handles the routing, reminders, and record keeping.
It differs from simply scanning paper. A scanned invoice is still a document someone must read and key in. Automation turns the invoice into structured data that flows through rules your team defines, which is why AP automation tends to improve both speed and control at once.
Why finance teams automate AP
Manual payables work carries three recurring costs: time spent on entry and follow-up, errors that reach the ledger or the bank, and limited visibility into what is owed and when. Automation addresses each one. In a 2026 survey, 87% of customers surveyed agreed that using BILL helps them reduce errors.[3] A documented workflow also gives auditors a clear trail, which supports a stronger internal controls checklist and lowers exposure to accounts payable fraud.
5 Steps on how to automate accounts payable
Step 1: Capture and code invoices in one place
Start by giving each invoice a single entry point, such as a dedicated email inbox, so bills stop scattering across personal mailboxes. From there, invoice processing software reads the document and fills in vendor, amount, due date, and likely coding. Invoice data extraction for common fields is approximately 99% accurate.[4] Staff then review exceptions rather than retype each line. Explore how AI in BILL supports capture and coding.
Step 2: Set approval rules and route bills
Define who approves what before you turn routing on. Common rules key off dollar thresholds, departments, or vendor type, and they can escalate larger bills to a senior approver. Keep the person who adds a vendor separate from the person who approves its payments. Strong AP controls and clear payment approvals make those rules enforceable, and a written approval process keeps everyone aligned. For setup details, see this guide to automated approval routing. In a 2026 survey, 81% of customers surveyed agreed that BILL's payment approval process is at least twice as fast as other methods.[3]
Step 3: Match invoices to purchase orders and receipts
Matching confirms that you are paying for what you ordered and received. There are two common methods:
- Two-way matching compares the invoice to the purchase order. It suits services and purchases without a goods receipt. See this explainer on two-way matching.
- Three-way matching compares the invoice, the purchase order, and the goods receipt. It suits inventory and physical goods where delivery can differ from the order. Learn more about three-way matching and how automated three-way matching works in BILL.
Set tolerance rules so small variances pass while larger ones pause for review. Teams that tie purchasing to payables through procurement workflows find it easier to keep purchase orders current.
Step 4: Schedule and send payments
Once a bill is approved and matched, schedule payment by due date and cash position, not by whoever remembers. Choose the method that fits the vendor, such as ACH, check, or international payments. This overview of how to make an ACH payment covers the basics. In a 2026 survey, 90% of customers surveyed agreed that BILL makes it easy to pay vendors.[3]
Step 5: Sync to the ledger and monitor
The last step closes the loop. Payments and bill details should flow back to your accounting system so the books match the bank. BILL integrates with leading accounting software: QuickBooks, Xero, Oracle NetSuite, Sage Intacct, and Microsoft Dynamics.[5] See more BILL integrations. After sync, review aging, upcoming payments, and exceptions on a regular schedule, and keep the history ready for any accounts payable audit.
The 5 AP Automation steps at a glance
Case study: How did First Steps Financials spent less time processing bills
First Steps Financial, a fully remote fractional accounting firm in Hamilton, NJ, serves about 70 clients. Before BILL, staff checked each line of each invoice because the OCR in its previous system often misread fields. After moving accounts payable to BILL, the firm reports about 50% less time spent processing bills.[2]
Marc Chianese of First Steps Financial said, "We get about half the time back from bill pay because we're not typing almost anything in." The firm also reports that its approval workflow is easy for clients to use, with custom rules routing each invoice to the right approver.
Start with the step that hurts most
You do not need to automate all five steps at once. Many teams begin with capture, since it removes the most typing, then add approvals and matching as rules take shape. Pair the rollout with a review of vendor payment options and, for deeper reading on applying AI to payables, the guide on using AI in accounts payable.
Putting the five steps together
Automating accounts payable comes down to five connected steps. Capture invoices in one place so data is entered once. Set approval rules that route each bill to the right person. Match invoices to purchase orders, using two-way matching for services and three-way matching for goods with receipts. Schedule payments by due date and method, then sync results to the ledger and review exceptions.
Together, these steps reduce manual handling, strengthen controls, and leave a record at each stage, as the First Steps Financial example shows. Start with the step that causes the most friction, then add the others as your rules mature. The result is a payables function where finance staff review exceptions and plan cash while routine work moves along on its own.
Frequently asked questions
What is the difference between two-way and three-way matching?
Two-way matching compares an invoice to its purchase order, while three-way matching adds the goods receipt as a third document. Two-way suits services and simple purchases. Three-way suits inventory or physical goods, where the delivered quantity can differ from the ordered quantity. Many teams use both, applying each by purchase type.
Do you need purchase orders to automate accounts payable?
No, purchase orders are not required to start, but they are required for matching. Teams without purchase orders can still automate capture, approvals, and payments. Adding purchase orders for higher-value or recurring purchases later makes two-way and three-way matching possible.
Which AP tasks should be automated first?
Invoice capture is a common starting point because it removes the most manual typing. Approval routing is a frequent second step, since it replaces email chains with defined rules. Matching and payment scheduling can follow once those rules are stable.
Does AP automation work with QuickBooks, NetSuite, or other accounting software?
Yes, AP automation can sync with major accounting systems so bills and payments post to the ledger. BILL connects with QuickBooks, Oracle NetSuite, Xero, and others. See more BILL integrations to check compatibility with your accounting system.
Disclosures
[1] Based on a 2026 BILL survey comparing time spent for customers vs. non-customers.
[2] Based on First Steps Financial's experience using BILL as of April 2026. Results are not guaranteed and may vary by business.
[3] Based on a 2026 BILL survey sent to customers.
[4] Based on BILL's analysis of the top 20% of common bills assuming doc layouts and user behaviors stay consistent. Results will vary by invoice layout and data quality.
[5] Based on official contracts and integrations.
BILL is a registered Money Services Business with FinCEN and is a licensed money transmitter across the United States.
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