Invoicerr

Open-source invoicing you can host yourself today, or use in our cloud when it opens in November 2026: quotes, invoices, payments and the paperwork that follows, including the e-invoicing rules of the country you bill from.

Website · Waiting list · Documentation · Source code · Discord

• Quotes, invoices, credit notes, purchase orders, goods receipts, expenses and received invoices, all on one document engine.
• Payments, deposits, instalments, bank statement import with automatic matching, and online payment methods.
• Clients with their own portal, account statements and aged balance.
• An article catalogue with stock, project time tracking that turns into invoice lines, and recurring documents.
• PDF generation, e-invoice XML (Factur-X, UBL, CII, XRechnung, Peppol BIS, FatturaPA, FA(3)) and national transmission channels: PDP and Chorus Pro in France, KSeF in Poland, SdI in Italy.
• A legal archive per issued document, kept for as long as the country's own rule asks.
• E-mail/password, OIDC/SSO or API key sign-in, multi-company, role-based access, webhooks, a REST API, an MCP server and a plugin system.
• 18 interface languages, multi-currency, light and dark themes, installable as a PWA.

A country is data, not code. Germany, France, Italy, Poland and Portugal ship with their catalogues filled in, and every fact carries the legal text it comes from. See the country support matrix.

docker pull ghcr.io/invoicerr-app/invoicerr:latest

Issues and pull requests are welcome on the main repository. The local development guide covers the setup and the test suites. Translations are managed on Weblate.

Invoicerr is dual-licensed: AGPL-3.0 for open-source use, and a commercial license for offering it as a paid service.