Best OCR Software for Invoice Processing: 13 Tools Compared

Full disclosure: ECIT Digital makes one of the tools on this list. Every other tool is described from its own website, linked, and checked on 22 October 2026. We read invoices for companies including SATS and Tellit Solutions, so we know where this software earns its money and where it quietly gives up.

I have read more "best invoice OCR" lists than any healthy person should [stares into middle distance]. Here is the dirty secret: almost every one is written by a vendor that ranks itself first. This one is also written by a vendor, so at least I am telling you up front.

One thing before we start: somewhere in your building there is an invoice so ugly it should come with a warning label: faxed, scanned crooked, with a coffee ring over the total. Find it now and keep it close, because that invoice is going to decide which tool you buy.

The best OCR software for invoice processing, at a glance

Here are all 13 tools on one screen. It is the table I wish someone had handed me before my third demo of the week [yawns politely into sleeve].

The four kinds of invoice OCR software

Invoice OCR software falls into four kinds: OCR APIs that developers build on, platforms with a review screen for your team, AP software with capture built in, and managed services that check the data for you. The real difference is who fixes the fields the software is unsure about.

Every tool on this list reads invoices well most of the time. "Most of the time" is doing a lot of heavy lifting in that sentence [pats sentence on the back]. Someone has to catch the rest, and that someone is either a developer, your AP clerk, or the vendor.

The 13 best invoice OCR tools, one by one

Each tool gets a fact card built only from what the vendor publishes, then a short take. Where a vendor does not publish something, the card says so instead of me guessing [puts guessing hat back in drawer].

1. ECIT Digital

Yes, this is us, and yes, I put us first [looks at shoes]. The difference is who does the checking: our team validates the hard fields, so your staff never open a document. If you want a self-serve tool to tinker with on a Sunday, we are the wrong pick. If you want clean data in your ERP, see our invoice scanning software.

2. Rossum

Rossum is built for big AP teams with lots of ERPs and lots of invoices. Its homepage now says Coupa has acquired it, which matters if you are a Coupa shop, and it really matters if you are a Coupa competitor [raises eyebrows].

3. ABBYY Vantage

ABBYY has been reading documents since before some of us could read [ages visibly]. Vantage is the current platform, and it suits large enterprises and public bodies that want to host it themselves. Budget for a sales conversation, because there is no price on the website.

4. Nanonets

Nanonets has the most detailed published pricing of the platforms here, which in this industry is like being the tallest person in a room full of children [checks own height]. It is a good fit if you want to start small and have someone on your team who enjoys reviewing fields.

5. Docsumo

Docsumo checks the math as it reads, so quantity times unit price has to equal the line total [applauds quietly]. That is exactly the kind of check that catches a typo before it gets paid. It suits finance teams with real volume and a person available to work the queue.

6. Klippa DocHorizon

Klippa is a developer-friendly option with European hosting, and its site now says Klippa has become Doxis. If you are confused, so is my bookmarks bar [deletes three bookmarks]. Ask directly who the human operators are before you count on them.

7. Tungsten AP Essentials

If you want capture, matching and approvals in one box, this is that box [taps box approvingly]. It is more AP system than OCR tool. Our guide to Kofax alternatives covers the wider Kofax family if you are replacing it.

8. Amazon Textract

Textract is a superb engine with no car around it [mimes steering wheel]. You get the data and a confidence score, and your developers build the review screen, the ERP connection and the exception handling.

9. Google Document AI

Same story as Textract, different cloud. Pricing per 10 pages is kind to long invoices, which is the nicest thing anyone has ever done for a 9-page utility bill [wipes away tear].

10. Azure Document Intelligence

Azure's invoice model reads 27 languages, per Microsoft's documentation, against 13 for Google's invoice parser. It is the natural pick if your company already runs on Microsoft, and your IT team will tell you that unprompted [nods at IT team].

11. Mindee

Mindee is one of the few vendors that publishes separate accuracy numbers for header fields and line items, which I respect enormously [salutes]. It suits developers and product teams building invoice features into their own software.

12. Veryfi

Veryfi is fast and developer-first, with a free tier generous enough to test properly. Bring the ugly invoice from your drawer [taps drawer meaningfully].

13. Dext

Dext is built for bookkeepers and small businesses, and it is very good at that job. If you process thousands of supplier invoices a month into an ERP, you have outgrown it, congratulations [throws small confetti].

What invoice OCR vendors claim about accuracy

Most invoice OCR vendors publish an accuracy claim, but they measure it in different ways and almost none of them guarantee it. Read each number as a claim, then test it on your own invoices.

A claim of "99% accuracy" can mean 99% of fields, 99% of documents, or 99% on their favorite documents. I once claimed 99% accuracy at darts [points at wall full of holes]. Ask every vendor what they count, and on whose invoices.

OCR for invoice processing: how it works and where it fails

OCR for invoice processing turns an invoice image or PDF into text, then a model picks out the fields: supplier, invoice number, dates, totals, tax and every line item. Header fields are the easy part. Line items, multi-page tables, poor scans and handwriting are where accuracy drops.

Older tools needed a template per supplier layout, and someone had to build a new one every time a supplier redesigned its invoice [sighs in template]. Most modern tools read new layouts without templates, which is progress, but no tool reads a coffee ring. Remember that invoice in your drawer? This is its moment.

How to test invoice OCR software on your own invoices

Test every shortlisted tool on the same batch of your own invoices, a few hundred if you can, including your worst scans. Score header fields and line items separately, count how many invoices needed no human touch, and time how long each exception takes to fix.

One vendor's guide suggests a proof of concept on 200 to 500 of your own invoices, and that is sensible advice from a competitor, which hurts me a little to say [clutches chest]. Use the same batch for every tool, or the comparison is just vibes.

• Score line items on their own. A tool can get every total right and still scramble the lines that your 3-way match depends on.
• Count zero-touch invoices. The share that needed nobody is the number that saves money.
• Time the exceptions. A cheap tool that needs four minutes of fixing per invoice is not cheap.
• Include the ugly one. You know the one [nods solemnly].

Invoice OCR pricing: per page, per document or per year

Invoice OCR is priced per page, per document, by usage credits, or by annual license. The model matters as much as the rate, because a six-page invoice costs six times more on per-page pricing than on per-document pricing.

The number nobody prints is staff time. Fixing exceptions is a cost, and it often dwarfs the per-page fee [does sad math on napkin]. Put it in your scorecard.

Best invoice scanning software vs best invoice capture software

Invoice scanning software turns paper into digital images, and invoice capture software reads the data out of those images and PDFs. Most tools on this list do capture. If you still receive paper, something has to scan it first.

At ECIT, paper invoices are scanned by our partners and then processed like any other file, so nobody on your team has to befriend the office scanner [waves at scanner, scanner jams]. Our invoice processing services explain how the whole thing fits together.

Do e-invoices need OCR?

No. A true e-invoice arrives as structured data, so there is nothing to read with OCR. In the UK, the government has confirmed mandatory e-invoicing for all VAT invoices from 2029, which will shrink the PDF pile over time. Until then, most companies need both, and ECIT handles Peppol e-invoices and PDFs in the same pipeline.

Sadly, this means the ugly invoice in your drawer will eventually retire [dabs eye with invoice]. Enjoy it while it lasts.

What we see in the field

Here is what we see from the inside, where invoices arrive in every format and every mood [puts on hard hat].

• The last few percent is where the work is. Reading most fields is easy for any modern tool. Catching the rest is what our validation team is for, and it is what the 99.8% guarantee rests on.
• Clients never touch the document. Validated data goes straight into their ERP, AP workflow tool or property management system.
• Variable invoices are the real test. Construction invoices change layout and line items on every job.
• Per-document pricing keeps it simple. No license, and you are not charged extra because a supplier sends a long invoice.

"Construction invoices are complex and highly variable and ECIT provided a flexible and extensible data extraction model that worked wonderfully." - Terence Pua, CEO, Hinges AI

So, which tool should you buy? Whichever one reads your ugliest invoice correctly, on the first try, at a cost you can live with. Go get that invoice out of the drawer [hands it to you with tongs]. It has been waiting its whole life for this.