12 Best Invoice Data Extraction Software Tools for 2026

Invoice data extraction software reads a PDF or a photo of an invoice and returns the fields you need, such as supplier, invoice number, date, line items and total, as rows in a spreadsheet or as data another system can take. The tools that do it differ less in how well they read and more in what happens next.

Some hand you a CSV and stop. Some route the invoice for approval and post it to your ERP. Some are APIs with no screen at all. This post sorts twelve of them by that job, including the free extractor on Mammoth Analytics, the company I founded, with each price read off the vendor's own page on 10 November 2026.

The best invoice data extraction software

• 1. Mammoth for a free spreadsheet from any supplier's layout
• 2. invoicedataextraction.com for pay-as-you-go page credits
• 3. Docparser for suppliers whose layout never changes
• 4. Parseur for invoices that arrive by email
• 5. Nanonets for AP teams posting to QuickBooks, Xero or NetSuite
• 6. Docsumo for line items that need their arithmetic checked
• 7. Rossum for large AP teams on an ERP
• 8. Klippa for European AP teams that bill per invoice
• 9. Mindee for developers who want an invoice API with SDKs
• 10. AWS Textract for developers on AWS
• 11. Google Document AI for developers on Google Cloud
• 12. Azure AI Document Intelligence for developers on Azure

What is invoice data extraction software?

Invoice data extraction software turns an invoice document into structured data. It reads the header fields (supplier, invoice number, dates, totals, tax) and usually the line items (description, quantity, unit price, amount), then exports them as CSV, Excel or JSON, or pushes them into accounting software.

Modern tools read the page with OCR and a trained or language model, so most no longer need a template for each supplier.

The twelve here fall into four kinds:

What to look for in invoice data extraction software

• Line items, not only totals. Every tool here reads the total. Fewer return each line as its own row, and that is the part reconciliation needs.
• What it charges per. Page, document, "run", credit or invoice. Google counts up to ten pages as one document, Nanonets sells runs, Klippa counts invoices. Convert to your own monthly volume before comparing.
• Templates or none. Rules-based tools such as Docparser are exact on a layout they know and fail on one they do not. Model-based tools cope with a new supplier but need checking.
• Where the data goes next. A CSV is the end of the job for some teams and the start of it for others. If invoices must land in NetSuite or Xero, buy for the integration.
• What happens to the file. Invoices carry bank details. Check retention before you upload.

How this list was put together. Every price came from the vendor's own pricing page on 10 November 2026, and the References link each one. The units are left as each vendor states them. Nobody here has run all twelve on the same stack of invoices, so treat each "best for" as a judgement about fit rather than a test of accuracy.

Quick comparison

Some vendors show euro prices to readers in Europe, which is where these were read from.

Best free invoice data extraction software

1. Mammoth

Mammoth pros:

• Free, with any email address
• You say which fields you want in plain words, such as invoice number, date, supplier and total
• No template per supplier: it reads the page
• Reads PDFs, scans and photos (PDF, JPG, PNG, WEBP, TIFF and HEIC) and returns Excel or CSV
• Files deleted within 24 hours

Mammoth cons:

• It returns a file; it does not route invoices for approval or post them to an ERP
• The result arrives by email rather than through an API

The invoice data extraction tool is the free end of this list. Upload an invoice, choose Custom, list the fields you need, and the spreadsheet arrives in your inbox. A PDF from the supplier reads better than a photo of a printout, and the total is worth checking against the invoice before you use the file.

Where Mammoth goes further is after extraction. A month of invoices is a reconciliation job: match them to purchase orders, flag the duplicates, total by supplier. Mammoth's main product cleans and joins that data and reruns the same steps when next month's batch lands.

Mammoth pricing: the invoice extractor is free, and the main product has a free tier.

2. invoicedataextraction.com

invoicedataextraction.com pros:

• 50 free pages every month
• One row per invoice or one row per line item, your choice
• Failed pages are not charged, and credits last 18 months
• Node and Python SDKs, a REST API and an MCP server alongside the web app

invoicedataextraction.com cons:

• An extractor only: no approvals or accounting integrations

This is the top Google result for the search, and it is a focused product. Prices fall with volume, from €0.10 a page on the smallest pack to €0.046 on the largest.

Pricing: pay-as-you-go packs from €10 for 100 pages ($12) up to €1,150 for 25,000 pages ($1,375). 50 pages a month free.

Best invoice data extraction software for fixed layouts

3. Docparser

Docparser pros:

• Rules you can see: zonal OCR, anchor keywords and drag-and-drop table columns
• Takes PDF, Word, spreadsheets, text, XML and images
• Exports to Excel, CSV, JSON or XML, Google Sheets, Zapier, Workato and Power Automate

Docparser cons:

• A new supplier layout needs a new rule
• The plans include 100 to 1,000 parsing credits a month

Docparser is rules-based, which sounds old-fashioned and is the right choice when the same twenty suppliers send the same layout every month. Each field comes from a place you defined, so a wrong value has a cause you can find.

Docparser pricing: Starter $39, Professional $74 and Business $159 a month, or $32.50, $61.50 and $133 billed annually, for 100, 250 and 1,000 parsing credits. 14-day free trial, no card.

Best invoice data extraction software for email

4. Parseur

Parseur pros:

• Built around forwarding emails and attachments to a mailbox
• 20 free pages every month
• Exports to CSV, Excel, JSON, Google Sheets, Zapier, Make, n8n, webhooks and an API

Parseur cons:

• Its product pages talk about fields and tables but do not name line items

If supplier invoices land in a shared inbox, Parseur takes the inbox as the starting point. Forward the email, and the fields arrive in a spreadsheet or another app.

Parseur pricing: billed annually, from €49 a month for 100 pages up to €499 for 10,000 pages, with larger volumes quoted. 20 pages a month free.

Best invoice data extraction software for accounts payable

5. Nanonets

Nanonets pros:

• Line items down to SKU level
• Takes invoices by email, API, upload, Drive, Dropbox or RPA
• Posts to NetSuite, SAP, QuickBooks or Xero, with a review screen

Nanonets cons:

• Priced in runs and credits rather than pages, so the cost per invoice takes working out

Nanonets is an AP workflow tool with extraction at its core. Invoices come in, a reviewer checks the exceptions, and the approved data goes to the accounting system.

Nanonets pricing: Starter is free with $50 of credits, then $100 a month for 100 credits. Runs cost $0.02 (simple), $0.10 (standard AI) or $0.30 (complex AI). Growth and Enterprise are quoted.

6. Docsumo

Docsumo pros:

• Checks the arithmetic: quantity times unit price, subtotal and total
• Joins line-item tables that run across pages
• A 14-day trial with up to 1,000 free pages

Docsumo cons:

• No public price; plans are quoted on volume
• Purchase-order matching needs Enterprise

Docsumo's arithmetic check is the feature that saves the most time later. An extraction that reads a 7 as a 1 still produces a tidy row. A check that the lines add up to the total catches it before it reaches the ledger.

Docsumo pricing: quoted on volume, with setup fees separate.

7. Rossum

Rossum pros:

• Takes documents from email, scanners, PEPPOL and shared drives, e-invoices and PDFs together
• Integrations with SAP, Coupa, NetSuite, Workday and Microsoft Dynamics
• A 14-day trial

Rossum cons:

• Starts at $18,000 a year on a one-year minimum contract

Rossum is the enterprise end of AP extraction. If you process invoices by the thousand and post them to SAP, the price is set against a team's time rather than a tool budget.

Rossum pricing: Starter "starting at $18,000 per year". Higher tiers are quoted, and extra pages are charged per page.

8. Klippa

Klippa pros:

• SKU-level line items
• Reads PDF, images, Word and Excel files
• Outputs JSON, CSV, XML, Excel or UBL

Klippa cons:

• Priced per invoice volume; its extraction API is quote-only

Klippa's AP product is priced by invoices a year, which is easy to budget for a European finance team that knows its volume.

Klippa pricing: Effective €95 a month for up to 4,000 invoices a year, Premium €275 for up to 12,000. Extra invoices from €0.28, ERP integrations from €100 a month.

Best invoice data extraction software for developers

9. Mindee

Mindee pros:

• Accepts PDF, JPG, PNG, WebP, TIFF and HEIC, up to 200 pages
• Returns line items as an array, even across pages, with confidence per field
• SDKs in six languages plus Zapier, Make and n8n

Mindee cons:

• Credits run out faster when you ask for confidence scores (1.5 credits a page)

Mindee is an invoice OCR API with the ergonomics developers expect: a schema, confidence scores and client libraries.

Mindee pricing: Starter from €44 and Pro from €116 a month, with one credit per page processed. 14-day free trial.

10. AWS Textract

AWS Textract pros:

• AnalyzeExpense returns line items as rows with confidence and position
• 100 free pages a month on the free tier

AWS Textract cons:

• An API only: the spreadsheet, review and posting are yours to build

AWS Textract pricing: AnalyzeExpense is $0.01 a page for the first million pages, then $0.008, in US West (Oregon).

11. Google Document AI

Google Document AI pros:

• The Invoice Parser reads header and line-item fields, including quantity, unit price and amount
• Batch requests take documents of up to 200 pages

Google Document AI cons:

• No free tier for the invoice parser beyond Google Cloud's general credits

Google Document AI pricing: $0.10 per count, where one count is a document of up to ten pages. $0.09 and $0.08 on one- and three-year commitments.

12. Azure AI Document Intelligence

Azure pros:

• The prebuilt invoice model reads key fields and line items in 27 languages
• A no-code Studio as well as REST and SDKs
• 500 free pages a month

Azure cons:

• The free tier reads only the first two pages of each document

Azure pricing: $10 per 1,000 pre-built pages in East US, from Microsoft's Retail Prices API; the pricing page itself did not render a figure when read.

What about LlamaIndex and Affinda?

Both rank for this search. LlamaIndex's LlamaExtract pulls fields into a schema you define and suits developers already building on LlamaIndex, but its pricing page does not state the credit cost of an extraction page. Affinda extracts invoice headers and line items and matches them to purchase orders; it publishes no price and offers a two-week trial with 200 credits.

Which invoice data extraction software should you choose?

Decide by what happens to the data after extraction.

• It goes into a spreadsheet, now and then. Mammoth's free extractor or invoicedataextraction.com.
• The same suppliers send the same layout every month. Docparser.
• Invoices arrive in an inbox. Parseur.
• They need approving and posting to accounting software. Nanonets for small and mid-size teams, Docsumo when the arithmetic matters, Rossum or Klippa at volume.
• A developer is building it into a product. Price AWS, Google, Azure and Mindee on your real page counts.

The common mistake is buying an AP platform to solve a spreadsheet problem, or the reverse.

Frequently asked questions

What is invoice data extraction?

Invoice data extraction is pulling the fields from an invoice, such as supplier, number, date, line items and total, into structured data such as a spreadsheet or JSON. Software does it with OCR and a model that recognises which text is which field.

Is there free invoice data extraction software?

Yes. Mammoth's invoice extractor is free with any email, invoicedataextraction.com gives 50 pages a month, Parseur 20, AWS Textract 100 and Azure 500. The cloud APIs need a developer to use.

How much does invoice data extraction software cost?

From free to $18,000 a year and up. Pay-per-page APIs run about $0.01 a page on AWS and $10 per 1,000 pages on Azure. No-code parsers start around $30 to $50 a month. AP platforms such as Rossum are annual contracts.

Can invoice extraction software read line items?

Most of the tools here can, including Nanonets, Docsumo, Klippa, Mindee, AWS Textract, Google and Azure. Check that line items come back as separate rows rather than one block of text, because reconciliation needs the rows.

Can I extract data from scanned invoices and photos?

Yes. Most tools here accept scans and images as well as PDFs. A PDF generated by the supplier's system reads more accurately than a photo, and any extraction is worth checking against the invoice total.

What is the difference between OCR and invoice data extraction?

OCR turns an image into text. Invoice extraction goes further: it decides which text is the invoice number, which is the total and which lines are items, and returns them as labelled fields.

Where these prices came from

Every figure was read from the vendor's own page on 10 November 2026. Several vendors show euro prices to European readers, and two cloud pages load their prices in the browser; the Azure figure comes from Microsoft's public Retail Prices API instead. Check the vendors you shortlist before you commit to a volume.