Can an AI agent run your accounts payable?

Can an AI agent do accounts payable?

Yes, for most of the paperwork, and no, for the money. An AI agent for accounts payable can read supplier invoices from your inbox, pull out the data, code each line, match it to a purchase order and leave a draft bill in your accounting system for someone to approve. Agents run this in production today. Genpact reports a logistics client reaching about 65% touchless invoice processing with AI agents, and Twistag reports an agent processing more than 2,000 invoices a month for Aralab, a manufacturer. Both figures come from the vendors. Conventional AP automation sets the baseline agents are measured against: Esker reports that G's Group cut invoice processing from 17 to 5 days while handling nearly 70,000 invoices a year with a 10-person AP team.

What an agent should not do on its own is create vendors, change bank details, approve spending or release payments. Even Microsoft's Payables Agent, built into Business Central, drafts invoices but does not post them, and Microsoft lists approval flows and anomaly detection as unsupported. So treat this as a supervised hire: the agent does the keying and matching, and a person owns every decision that moves cash.

This page covers the invoice-to-approval part of AP. For expense reports see expense review and audit, and for the clerk role as a whole see accounts payable clerk.

What the agent does and what stays with you

1. Agent

   1
   • Collect invoices from the AP inbox and supplier portals
   • Extract header and line data from invoice PDFs

2. Agent with review

   2
   • Identify the vendor and catch duplicates

3. Human

   3
   • Set up a new vendor and its bank details

4. Agent with review

   4
   • Code invoice lines to GL accounts and cost centers
   • Match invoices to purchase orders and receipts
   • Chase missing information with suppliers and requesters

5. Human

   5
   • Approve invoices for payment
   • Release the payment run

6. Agent

   6
   • Report on aging, discounts and exceptions

The split follows one rule: the agent can do anything a reviewer can check against a document, and a person does anything that commits the company. Extraction and reporting can be checked by sampling, so they go to the agent. Coding, matching and supplier follow-up are where agents save the most time but also make judgment errors, so each output that the agent flags gets a human decision. Vendor setup, approval and payment stay human.

The vendor-setup line matters more than it looks. Microsoft's documentation says that when its agent creates a vendor, the vendor stays blocked from processing until a relevant stakeholder unblocks it, and that the agent itself provides no vendor approvals. Microsoft explains that vendors and their bank accounts are usually confirmed by calling the vendor's finance department, and that in many places this is required for a successful audit. Keep that step even if your tool lets you skip it.

A worked example: one invoice

This is an illustration, not a customer story.

An invoice for $4,180 arrives from a packaging supplier as a PDF attached to an email. The agent picks it up from the AP mailbox, extracts the vendor, invoice number, date, three line items, sales tax and total, and finds the vendor in your vendor list. It checks for an earlier bill with the same number and amount and finds none. It codes two lines to packaging materials and one to freight, using last quarter's bills from the same supplier as reference. It matches the invoice to a purchase order for 2,000 boxes, but the receiving record shows 1,800 received, so it flags a quantity variance.

The draft bill lands in the accounting system with a note: "PO 1182: invoiced 2,000, received 1,800, variance $360." Your AP owner opens the flagged draft, confirms with the warehouse that the last 200 boxes arrive next week, and holds the invoice. Nothing was posted or paid by the agent. If the same email had also said "please note our new bank details," the agent would route it to the vendor-change procedure, and a person would call the supplier on the number already on file.

What you need to provide

The agent touches financial data (amounts, bank details, payment terms) and some personal data, because many small suppliers are sole traders invoicing under their own names. Give it the least access that gets the job done:

• Read access to the AP mailbox. Microsoft recommends a shared, internal-only mailbox that only the agent processes, so employees see invoices before the agent and stray emails stay out.
• A user in your accounting system that can create draft bills but cannot post, approve or pay.
• Your chart of accounts, cost centers and tax codes, plus a few months of posted bills so the agent can learn how you code each supplier.
• Open purchase orders and receiving records, if you use them.
• Your coding rules and approval thresholds, in writing. If they live only in someone's head, write them down first; the agent will be as consistent as the rules it gets.

Check the limits of whatever tool you use. Microsoft's agent, for example, processes only emails with PDF attachments, skips emails with more than 10 attachments, and handles at most 500 invoices a day. Invoices outside those limits need a manual route.

Job brief template

Use this as the brief for a vendor, an operator or an internal team setting up the agent. Replace the bracketed values with your own.

The acceptance criteria are the part to keep. A sample of 50 invoices checked against the PDF and against your AP owner's coding tells you more than any vendor accuracy claim.

What it costs

The human figure is the 2025 national median annual wage for bookkeeping, accounting and auditing clerks (SOC 43-3031), the group that includes accounts payable clerks, as published on O*NET OnLine from BLS data. It is wage only. The agent figures are published prices from two vendors, and each comes with a monthly minimum. Rhocash charges $1.50 per invoice on its Starter plan at $299 a month for up to 200 invoices, down to $0.65 per invoice on its Business plan at $1,299 a month for up to 2,000 invoices. Nanonets prices each block run (one step of a workflow) from $0.02 to $0.30, with a $100 a month minimum for 100 credits once the free $50 in credits is used; it says a typical invoice workflow runs 4 to 6 blocks, so at the upper end, 6 blocks x $0.30 per run = $1.80 per invoice. Because the minimums differ, compare total monthly cost at your volume, not the per-invoice rates alone. Nanonets quotes its Growth plan on request and Rhocash prices Enterprise as custom. Microsoft's Payables Agent bills in Copilot Credits that vary with the interaction, with no per-invoice figure published.

Two costs sit outside both numbers: the time your reviewer spends on exceptions, and the setup work of writing down coding rules. Neither has a reliable public figure, so measure both in your trial.

Risks and human checkpoints

Fraud is the risk that justifies the checkpoints. The FBI's Internet Crime Complaint Center recorded about $3.05 billion in reported losses to business email compromise in 2025. That figure is about attacks on businesses, not on AP agents, but it is a reasonable inference that an agent reading invoices from email could meet the same forged invoices and bank-change requests your team sees today. The control is not a better model; it is keeping vendor changes and payments behind a person and a phone call.

The quieter risk is volume that disappears. If the agent skips an email it cannot process, nobody may notice until a supplier chases payment. A daily count of emails in, drafts out and exceptions raised catches this early.

How to run a trial

Run the agent alongside your current process for one month before you rely on it.

1. Pick a slice: one entity or 3–5 high-volume suppliers, ideally with a mix of PO and non-PO invoices.
2. Set the agent's permissions to draft only. Your team keeps processing as usual.
3. Each week, compare 50 agent drafts with what your team booked: header data, GL coding, PO match and flags. Count errors against the brief's acceptance criteria.
4. Log every exception the agent raised and every one it missed. A missed variance matters more than ten false alarms.
5. Time your reviewer. Minutes per invoice reviewed is the number that decides whether the agent saves money.
6. Send a test invoice with a changed bank account through the normal channel and confirm it lands in the vendor-change procedure, not the approval queue.

1. 1

   Pick a slice

   One entity or 3–5 high-volume suppliers, ideally with a mix of PO and non-PO invoices

2. 2

   Set the agent's permissions to draft only

   Your team keeps processing as usual

3. 3

   Each week, compare 50 agent drafts

   With what your team booked: header data, GL coding, PO match and flags

4. 4

   Log every exception

   The ones the agent raised and the ones it missed

5. 5

   Time your reviewer

   Minutes per invoice reviewed decides whether the agent saves money

6. 6

   Send a test invoice with a changed bank account

   Confirm it lands in the vendor-change procedure, not the approval queue

If the drafts meet the criteria for two weeks in a row, stop double-processing that slice and widen it. For more on structuring the test, see how to run a paid trial with an AI agent, and for writing the brief itself, how to write a job description for an AI agent. Related finance jobs: accounts receivable, month-end close and the finance overview.

This page is not financial, tax or accounting advice.

Sources

1. 1
   Payables Agent overview in Business Central

   Microsoft LearnPrimaryAccessed Nov 14, 2026

2. 2
   43-3031.00 - Bookkeeping, Accounting, and Auditing Clerks

   O*NET OnLine (U.S. Department of Labor)PrimaryAccessed Nov 14, 2026

3. 3
   2025 IC3 Annual Report

   FBI Internet Crime Complaint CenterPrimaryAccessed Nov 14, 2026

4. 4
   Powering 65% touchless accounts payable with agentic AI

   GenpactVendorAccessed Nov 14, 2026

5. 5
   An autonomous AP agent handling 2,000+ invoices a month

   TwistagVendorAccessed Nov 14, 2026

6. 6
   G's Group accelerates invoice processing with Esker

   EskerVendorAccessed Nov 14, 2026

7. 7
   Nanonets pricing

   NanonetsVendorAccessed Nov 14, 2026

8. 8
   AP automation pricing

   RhocashVendorAccessed Nov 14, 2026