Assembly Line

Bill.com vs Invio

Bill.com and Invio are both invoicing software. Bill.com is a commercial product from BILL Holdings. Invio is open source under Unlicense, with 1.2k GitHub stars.

Which to pick

Pick Bill.com when
A US small or midsize company or its accounting firm wants to automate bill approval and payment runs.
Pick Invio when
A freelancer wants simple self-hosted invoicing with European e-invoice output.

Side by side

What it does

Accounts payable and receivable automation for US businesses: capture bills, route approvals, pay by ACH or card, and send invoices, synced with accounting systems.

A small self-hosted invoicing app that creates invoices and exports e-invoice formats including Factur-X/ZUGFeRD, FatturaPA and UBL for PEPPOL.

Watch out

Transaction fees on top of seat pricing, and it is centred on the US.

Young and the author does not guarantee legal compliance for any country's e-invoicing rules.

Ready for

Production-ready

Usable

Runs as

Cloud service and mobile app

Self-hosted server

Built with

Not published

TypeScript and Svelte

Source code

Closed source, sold by BILL Holdings

Open source, Unlicense (public domain)

What the license allows

Closed source: you use it under the maker's terms and cannot change or resell the code.

You can take the code into anything, including a product you sell, with no conditions.

How widely known

363 Wikipedia readers a month on phones

1.2k GitHub stars

How established

Not known

Young: started 14 months ago, latest release v2.4.0.

Other comparisons

More invoicing apps

Every invoicing product and project, ranked

Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.