Best AI Invoice Processing Software for ERP and AP Teams (2026)

The best AI invoice processing software is the one that gets a correct invoice into your ERP with the least human work, and that depends on where your invoices break today. If the problem is reading messy documents at high volume, a capture specialist such as Rossum, ABBYY Vantage, Hyperscience, Docsumo, Nanonets or Hypatos does the extraction; if you want a full AP platform that also codes, routes and pays, look at Vic.ai, Medius or Basware; if you want to stay inside your ERP vendor, use its own capture (SAP Document AI, NetSuite Bill Capture, the Business Central Payables Agent, Epicor IDC); and if the slow part is matching each invoice to the purchase order and receipt and entering it, an agent such as Fluent drafts the invoice in the ERP for review.

Fluent is one of the options below; we have tried to be fair.

This guide covers the processing step: capture, extraction, coding, matching and getting the invoice into the ERP. For approval workflow and supplier payment platforms, see best AP automation for Epicor Kinetic.

The four approaches

Invoice processing tools fall into four groups. The line between them is where the work ends: some stop at clean data, some run the whole AP process, and some finish with a transaction in the ERP.

• Document capture specialists (IDP). Rossum, ABBYY Vantage, Hyperscience, Docsumo, Nanonets and Hypatos. They read invoices and other documents, extract header and line data, and pass the result to another system through connectors or an API. Several now describe their products as AI agents, and Hypatos and Nanonets add coding or matching on top of extraction.
• AI-first AP platforms. Vic.ai, Medius and Basware. Capture is one module of a larger AP product that also codes, matches, routes approvals and, in most cases, pays suppliers. Staff work in the AP platform, which syncs with the ERP.
• ERP-native capture. SAP Document AI, NetSuite Bill Capture, the Business Central Payables Agent and partner apps such as Continia Document Capture, and Epicor Intelligent Data Capture (IDC) inside Epicor ECM. Capture lives in or next to the ERP, so the invoice lands where it will be posted.
• AI agents that draft in the ERP. Fluent. An agent reads each invoice, finds the vendor, purchase order and receipts in the ERP, checks quantities and prices, and drafts the invoice on the ERP's own screen for a person to review.

Comparison table

"Ask" means we could not confirm the answer from the vendor's public positioning. Check with each vendor for your ERP and version.

Evaluation criteria

Six questions separate these options faster than a feature list. Bring your own invoices to every one of them.

1. How accurate is it on your invoices?

Every vendor quotes an accuracy figure, and every figure was measured on someone else's documents. Ask for a trial on a sample of your own: scans, photos, handwritten corrections, the supplier who sends a spreadsheet. Measure field accuracy on the lines as well as the header, and count how many invoices needed a person to touch them.

2. Does it read line items and multi-page invoices?

Header fields are the easy part. Most of the work in manufacturing and distribution AP is in the lines: part numbers, quantities, units of measure, freight and surcharges, and tables that run across pages. Ask how the product handles a twelve-page invoice with a repeated header, and what it does when a supplier uses its own part numbers.

3. Does it match to the purchase order and the receipt?

Extraction tells you what the invoice says. Matching tells you whether to pay it. Ask whether the product matches against live purchase order and receipt data in your ERP or against a copy you upload, whether it checks quantity against what is left to bill, and whether it compares price against the order line. Two-way matching catches price errors; three-way matching also catches partial shipments and billing ahead of the receipt.

4. What happens on an exception?

The invoices that cost time are the ones that do not match: an unknown vendor, a missing PO number, a quantity over the receipt. Ask what the reviewer sees. A good answer shows the difference on the line, says what was searched, and lets a person fix it in one place. A weak answer is a low confidence score and a queue.

5. Does it write into the ERP, or export a file?

Some tools end with a data file or an API payload, and someone still builds and maintains the import. Others create the transaction in the ERP, where the ERP's own validation runs. Ask which screen or record the invoice lands in, whether it is a draft or posted, and what gets installed in your ERP to make that happen.

6. What setup does each new vendor need?

Ask whether the product needs templates, field mapping, a set of training samples per layout, or nothing. Then ask what happens when a supplier changes its invoice format, and who fixes it. A tool that needs a template per vendor is fine for fifty stable suppliers and a burden for five hundred.

Best for, option by option

Rossum. Best for enterprises processing high volumes across many languages and document types, with integrations into SAP, Coupa, NetSuite, Workday and Microsoft Dynamics. Rossum says its model learns from user feedback.

ABBYY Vantage. Best for IT and automation teams building document processing across the business. Its prebuilt invoice skills extract header and line data and can check order numbers, amounts and line items against purchase order data you load into it.

Hyperscience. Best for regulated, high-volume operations such as government, insurance and financial services, where documents go to a person whenever the software falls below an accuracy target the customer sets. Invoices are one document type among many.

Docsumo. Best when you want a capture layer in front of the systems you already run. It extracts every line item, joins tables that run across pages, shows a confidence score on each field, and sends results by REST API and webhooks. Vendor and PO checks are on its Enterprise plan.

Nanonets. Best for smaller and mid-market teams on QuickBooks or NetSuite who want extraction plus two-way and three-way matching against purchase orders pulled from the ERP.

Hypatos. Best for large SAP users and shared service centers. Its agents extract, code (GL account, cost center), match and prepare postings, and its SAP-certified connector posts in SAP.

Vic.ai. Best for teams that want an AI-first AP platform covering capture, coding, two-, three- and four-way matching, approvals and payments, with integrations to Oracle, Microsoft, Coupa, Sage, Workday and others and an open API for the rest.

Medius. Best for mid-market and enterprise finance teams that want capture, coding, PO and receipt matching, approvals and payments in one product, with pre-built integrations to SAP, Oracle, Microsoft Dynamics, NetSuite and Infor.

Basware. Best for large, multinational AP departments with e-invoicing requirements across countries. Its e-invoicing network and machine-learning coding for non-PO invoices are the main reasons to choose it.

SAP Document AI. Best for companies on SAP S/4HANA that want extraction from SAP. It extracts header and line items from supplier invoices for SAP S/4HANA Cloud and was previously called Document Information Extraction.

NetSuite Bill Capture. Best for NetSuite teams in the US with straightforward bills. You email or upload bills and NetSuite creates vendor bills from them. Oracle lists limits such as one bill per file and no support for serial or lot numbered items on standalone bills.

Business Central Payables Agent. Best for Business Central teams that receive PDF invoices by email. Microsoft's agent identifies the vendor, proposes purchase order line matches that Business Central validates, and creates an unposted purchase invoice for review. Microsoft lists limits including PDFs only, 10 pages per PDF and 500 invoices per day.

Continia Document Capture. Best for Business Central teams that want a mature capture app inside the ERP. It matches invoices to purchase orders, receipts, return orders and shipments, line by line, with configurable templates and fields.

Epicor IDC with ECM. Best for Epicor teams that want one vendor and an archive. IDC is the capture layer inside Epicor ECM, and ECM handles the archive and workflow. If you are weighing IDC specifically, see Epicor IDC alternative: Fluent with Epicor ECM.

Fluent. Best for manufacturers and distributors whose bottleneck is matching and keying invoices into the ERP. The AP agent reads PDFs, scans, photos, spreadsheets, email bodies, XML and EDI; matches vendors by name and tax ID and parts by the supplier's own part numbers; keeps units of measure as the invoice states them; checks quantity against what is left to bill and price against the order; and shows every difference on the line. It does not pay suppliers.

Where Fluent fits, and where it does not

Fluent is built around Epicor Kinetic, where it drafts invoices in AP Invoice Entry. It connects to Kinetic's REST API from outside: no customization, no BPM, no staging table, no import file. Each agent generates an Epicor access scope listing the services it calls, so Epicor enforces least privilege. It works on premise or Epicor-hosted. The same agents are offered for Prophet 21, SAP Business One, SAP S/4HANA, NetSuite, Acumatica, Microsoft Dynamics 365, Infor, Sage and other ERPs.

There are no templates per vendor, no field mapping and no model training. You set behavior with written instructions, and corrections become instructions. Nothing posts until a person processes the draft. An approval workflow routes each document to the people who sign off on it, with thresholds such as an amount or a price variance deciding who reviews what. If no vendor matches, the invoice is drafted with a note of what was searched and waits for a person. Every field read and every decision is recorded on the document.

At Metalworks, an Epicor Kinetic manufacturer, accuracy was measured on its own invoices during the trial. Read the Metalworks story.

Choose something else if you need supplier payments, a multi-step approval workflow across departments, or a capture platform for many document types outside finance. Fluent can sit alongside those tools and handle entry and matching in the ERP. If you run Epicor ECM, Fluent integrates with it: it takes the place of IDC as the capture layer and can send documents to ECM workflows, so ECM keeps the archive.

How to choose

• You need clean data from many document types, and your team will build the ERP integration: a capture specialist such as Rossum, ABBYY Vantage, Hyperscience or Docsumo.
• You want one AP platform that captures, codes, approves and pays: Vic.ai, Medius or Basware.
• You run SAP and want agents that code and post: Hypatos or SAP Document AI.
• You run NetSuite or Business Central with simple PDF invoices: start with NetSuite Bill Capture or the Business Central Payables Agent, and look at Nanonets or Continia when you outgrow them.
• You run Epicor Kinetic and want Epicor as the only vendor, with an archive: Epicor IDC with ECM.
• Your slow part is matching to the PO and receipt and keying the invoice into the ERP: an agent such as Fluent. For the Epicor steps, see how to automate Epicor AP Invoice Entry.

Run every shortlisted tool on the same sample of your own invoices, including the awkward ones: partial shipments, freight lines, multi-page invoices and suppliers who use their own part numbers. Count how many arrive ready to post, and time how long the rest take to fix.

See it on your own invoices

Fluent's AP agent is described at AP automation, with every agent on products. Pricing is at fluenterp.com/en/pricing. If you want to see it on your own invoices, book a demo.