Invoice automation starts with reading the invoice and checking it against a purchase order. Ramp costs $0 a user on its Free plan, and its payment fees come to $1.60 an invoice. BILL Essentials costs $1.70 an invoice at 1,000 invoices a month and $1.64 at 5,000 and 25,000. Tipalti lists a $99 a month base fee and no per-invoice price. Nine other vendors sell the same capture and matching and are quote only.
What invoice automation software does
Invoice automation software processes the invoices a company receives from its suppliers. Invoices a company sends to its customers belong to invoicing software and are outside this ranking. For each supplier invoice the software reads the document into fields, codes the lines to GL accounts, matches the invoice to a purchase order and receipt, routes it for approval and releases it for payment. OCR invoice capture covers the reading step, and the invoice approval workflow covers approval. An invoice that matches within tolerance moves on without anyone keying a field. An invoice that fails a check goes to a person.
For vendors with no list price, how many of four capabilities they sell: OCR or data extraction, automated invoice coding, two-way or three-way PO matching, and duplicate detection.
G2 review count, to order vendors with the same number of capabilities. Vendors with no G2 profile follow alphabetically.
Every vendor sells at least two of the four, so all twelve are ranked.
Cost per invoice at three volumes
Of the twelve vendors ranked here, only Ramp and BILL list enough to compute a full cost, and both charge payment fees per transaction, so the figure barely moves with volume. At 1,000 invoices a month BILL costs $1.70 and Ramp $1.60. At 5,000 invoices a month and 25,000 invoices a month BILL settles at $1.64.
Card payments sit outside both numbers, and BILL lists a card fee that Ramp does not, so the Ramp and BILL comparison shows a different gap once cards are included. The cost per invoice calculator scales both figures to any volume.
Melio is not ranked here, and it sits in the AP automation pricing index with 18 other vendors. It lists every plan and payment fee, starting with a Go plan at $0 that includes 5 free ACH payments a month and charges $0.50 for each one after that.
Capture and matching are separate jobs
OCR turns an image into text, and coding and matching decide whether the numbers are right. A team with mostly PO-backed invoices needs three-way matching and tolerance rules first. A team that receives mostly one-off bills needs coding that learns from past entries. Both start from OCR invoice capture, and an invoice that fails a tolerance check leaves straight-through processing and lands in the invoice approval workflow.
Matching depends on the ERP holding the purchase orders. NetSuite and Sage Intacct connections sit on higher plans at both Ramp and BILL, while QuickBooks syncs on every Ramp plan and from BILL’s Team plan.
How to choose invoice automation software
Start with five facts about your own invoices:
How many invoices arrive each month.
What share of them is backed by a purchase order.
Which ERP holds the purchase orders, and the plan that unlocks its sync.
Which formats arrive: PDF, scan, EDI or e-invoice.
How many entities the invoices belong to.
Then put these questions to every vendor:
How long does it take from signature to go-live?
What share of invoices reach approval with no keying?
How are exceptions handled?
How is line-item coding learned?
What does the quoted price exclude?
BILL leaves AI multi-line coding off its $49 Essentials plan. MineralTree’s PO matching is off by default and needs line-level capture. Rillion sells AI-native capture and PO matching as add-ons on every package, with a 12-month minimum term.
Choosing by company size
Small teams on QuickBooks or Xero fit Ramp, which costs $0 a user. They also fit BILL Essentials, which costs $49 a user a month. Both have a full list price.
Mid-market teams on NetSuite or Sage Intacct work through quotes, and Stampli, Rillion and AvidXchange all sell by quote.
Enterprise buyers with several entities and formats to cover look at Coupa and Medius, where Medius AP Essentials covers 1 entity and AP 360 covers 3.
The ranking, with cost at 5,000 invoices a month
1. Ramp: Best for capture with OCR on a plan that costs $0 a user
Ramp says its OCR reads each detail and line item with 99% accuracy from PDFs, scans and emails, and OCR extraction appears on the Free plan's feature list. An auto-coding agent maps line items to GL codes using the team's past coding. Two-way and three-way matching run against purchase orders imported from NetSuite or QuickBooks, or against POs and item receipts built inside Ramp. Duplicate detection is among the controls Ramp lists. Across the three volumes tracked, the Free plan's listed payment fees work out to $1.60 an invoice.
Ramp plans and prices
Best for
capture with OCR on a plan that costs $0 a user
Price disclosure
Full list price. Every fee needed for a cost per invoice has a list price.
Pricing
Per-user monthly plans including a free plan, plus listed Bill Pay fees per payment; several fees are waived when paid from a Ramp checking account
Auto-coded line items and three-way match with Ramp-built purchase orders are listed in the Plus block at $15 a user a month, while the $1.60 figure is for the Free plan.
2. BILL (Bill.com): Best for teams that need AI multi-line coding, from the $65 plan
BILL reads invoices that arrive by email or upload with optical character recognition and says it captures key fields with 99% accuracy. The Invoice Coding Agent fills multi-line bills on Team and above. Two-way and three-way matching check each invoice against its PO and receipt, and the app flags possible duplication so the same bill is not paid twice. The Essentials plan works out to $1.70 an invoice at 1,000 a month and $1.64 at 5,000 and 25,000.
BILL (Bill.com) plans and prices
Best for
teams that need AI multi-line coding, from the $65 plan
Price disclosure
Full list price. Every fee needed for a cost per invoice has a list price.
Pricing
Per-user monthly plans, plus a listed fee for each payment sent
3. Tipalti: Best for invoice capture in 145+ languages
Tipalti says its AI captures header and line-item data, codes invoices and matches purchase orders in one flow, with support for 145+ languages in invoice capture. Matching covers two-way and three-way, with tolerance thresholds set by amount or percentage at bill or line level. Exceptions can go to a buyer who approves or rejects by email without logging in. Accounts Payable plans start at $99 a month with unlimited users.
Tipalti features
Best for
invoice capture in 145+ languages
Price disclosure
Base fee only. Only the base fee has a list price, so no cost per invoice can be worked out.
Pricing
Monthly platform fee with unlimited users, plus per-invoice and per-payment transaction fees with no dollar figure listed
4. Stampli: Best for line-by-line coding learned from the team's own ledger history
Stampli combines OCR with an AI agent called Billy that codes each invoice line by line, applying GL accounts, departments and custom dimensions learned from past entries. Billy validates vendors and required fields, flags duplicates and links invoices to POs or receipts. Two-way and three-way matching are included, with partial amounts and added lines handled in the same screen. Stampli sells all four capabilities this list tracks.
Stampli features
Best for
line-by-line coding learned from the team's own ledger history
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; features are listed with no prices
Monthly cost at 5,000 invoices
Quote only
Cost per invoice at 5,000 invoices
Quote only
ERP integrations
NetSuite, Sage Intacct, Dynamics 365, QuickBooks, SAP
5. Coupa: Best for invoices arriving in any format, language or page count
Coupa Invoicing runs on Rossum's AI, which reads multipage invoices from any source without templates and extracts line-level data. Two-way and three-way matching use tolerance levels so reviewers see only the exceptions. With procurement connected, invoices are matched to approved POs with configurable tolerances and auto-approval. AI fraud detection watches for duplicate invoices and suspicious changes to vendor information.
Coupa features
Best for
invoices arriving in any format, language or page count
6. Yooz: Best for bundled multipage scans that need splitting before capture
Yooz pairs OCR with machine learning for data extraction, and YoozSmartSplit and YoozStamp separate bundled multipage uploads and mark each document. Invoices are cross-referenced with purchase orders and goods receipt notes, and when line items, unit prices and totals match within pre-set thresholds the invoice proceeds to payment processing. Built-in fraud detection flags a discrepancy such as an unexpected price rise or a missing delivery log. Yooz says it has over 250 ERP and accounting integrations.
Yooz features
Best for
bundled multipage scans that need splitting before capture
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Subscription priced by the number of documents processed; no US dollar prices
7. MineralTree: Best for PO matching that compares invoices with received quantities, on NetSuite
MineralTree offers invoice capture at header level or at header and line level, and its automated PO matching links each invoice line to a PO line. A setting chooses whether invoice quantity is compared with the ordered or the received quantity, and matching can allow a variance of up to 10%. In NetSuite, header-level coding can be pulled from the PO to the invoice.
MineralTree features
Best for
PO matching that compares invoices with received quantities, on NetSuite
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; sold as invoice-to-pay, payments only, or invoice capture
8. Rillion: Best for three-way matching with no template setup, sold as an add-on
Rillion says its AI-native capture extracts data from paper or digital invoices with over 95% accuracy, with no template setup or training. Three-way matching compares invoices with purchase orders and receipts. AI-native capture and PO matching are add-ons on every package, and the Professional package adds AI-powered coding and workflow.
Rillion features
Best for
three-way matching with no template setup, sold as an add-on
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; three packages, each with unlimited users and legal entities and a 12-month minimum term
9. Airbase: Best for payroll and HR buyers who want AP inside the same suite
Airbase now sits inside Paylocity's finance pricing, which lists AI-based touchless invoice capture and coding alongside automated two-way and three-way PO matching. The page is built around Paylocity's HR, finance and IT products.
Airbase features
Best for
payroll and HR buyers who want AP inside the same suite
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; sold inside Paylocity's HR and finance suite
Monthly cost at 5,000 invoices
Quote only
Cost per invoice at 5,000 invoices
Quote only
ERP integrations
No credit for any of the six ERPs we track
G2 rating
No G2 rating
Watch for
Every call to action is Contact Sales, with no dollar figure.
10. Corpay: Best for capture and PO matching on the platform that pays suppliers by virtual card
Corpay lists automatic invoice data capture, routing to approvers and PO-to-invoice matching, with in-field auto-coding that syncs to the ERP. The same platform pays suppliers by virtual card, ACH or check, and Corpay cites over 1 million vendors that accept its virtual card.
Best for
capture and PO matching on the platform that pays suppliers by virtual card
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; pays suppliers by virtual card, ACH and check, with card rebates
Monthly cost at 5,000 invoices
Quote only
Cost per invoice at 5,000 invoices
Quote only
ERP integrations
NetSuite, Sage Intacct, Dynamics 365, QuickBooks
G2 rating
No G2 rating
Watch for
Corpay sells AP automation by quote with no dollar figure, and its G2 reviews sit under several product names with no single rating.
11. AvidXchange: Best for handwritten and mixed-quality invoices with human indexers as a backstop
AvidXchange says its AI extracts invoice data with 99%+ accuracy, with expert indexers reviewing when needed, including handwritten invoices. An AI PO matching agent reconciles each invoice against its purchase order and matches line-item details. The vendor claims one person can manage more than 10,000 monthly invoices with 90% arriving ready for approval.
AvidXchange features
Best for
handwritten and mixed-quality invoices with human indexers as a backstop
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; no plan names or prices on the vendor's site
12. Medius: Best for capture of EDI and e-invoice formats alongside PDF and paper
Medius Capture uses OCR, AI and machine learning to read paper, PDF, e-invoice and EDI formats, then matches header and line-item data against single or multiple purchase orders. The AP Essentials package includes multi-way matching and capture. Medius cites a 96.3% touchless rate for PO invoices against a 23.4% market average, attributed to Ardent Partners.
Medius features
Best for
capture of EDI and e-invoice formats alongside PDF and paper
Price disclosure
Quote only. The vendor has no dollar list price.
Pricing
Quote based; two named packages, AP Essentials with 1 entity and AP 360 with 3 entities
Ramp's Free plan comes to $1.60 per invoice in payment fees and lists OCR extraction. Auto-coded line items and three-way match with Ramp purchase orders are listed on Plus. BILL Essentials follows at $1.64 to $1.70, and Stampli fits teams that want line-by-line coding learned from their own history.
What does invoice automation software do?
It reads each invoice into fields, codes the lines to GL accounts, matches the invoice to a purchase order and receipt, and flags duplicates before approval and payment.
How much does invoice automation software cost per invoice?
Under the site's volume and payment-mix assumptions, Ramp's Free plan lands at $1.60 per invoice and BILL Essentials at $1.64 to $1.70. Tipalti has only a $99 a month base fee.
Which vendors match invoices to purchase orders in three ways?
Ramp, BILL, Tipalti, Stampli, Coupa, Yooz, Rillion (as an add-on), Medius and Airbase name three-way matching. MineralTree's PO matching is available for File Connect and NetSuite.
Does invoice automation software work with NetSuite?
Nine of the twelve vendors tracked on this site name NetSuite as a native integration. At Ramp and BILL it sits on the upper plans.
What is the difference between invoice automation and invoicing software?
Invoice automation processes the invoices a company receives from suppliers. Invoicing software creates the invoices a company sends to customers.
Can QuickBooks or a spreadsheet handle supplier invoices?
A spreadsheet records what was paid. It does not read invoices, match them to purchase orders or route approvals. QuickBooks is an accounting system that the vendors here sync to: Ramp syncs with it on every plan and BILL from its Team plan.
How hard is it to switch invoice automation software?
Start with the contract terms. Rillion carries a 12-month minimum term with no trial, while Ramp and BILL price by user per month. Moving one group of suppliers first, with the ERP connected at the plan that unlocks its sync, keeps the change small.
Tipalti 
Stampli 
Coupa 
Yooz 
MineralTree 
Rillion 
Airbase 
Corpay 
AvidXchange 
Medius 
1. Ramp: Best for capture with OCR on a plan that costs $0 a user 
