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normbill
valid XRechnung — or the exact reason why not
Generate and validate XRechnung and ZUGFeRD / Factur-X invoices with a simple JSON API. Instant API key. Real documentation. No sales call, free to start.
Hi folks 👋, Michael here, maker of normbill.com !
Quick context for everyone outside Germany: from January 2027, German companies with >€800k revenue must issue structured e-invoices (XRechnung) for domestic B2B . Everyone else follows in 2028. That means every software product where users create invoices needs to ship this feature in the next few months.
You send invoice JSON, you get back compliant XRechnung (UBL or CII), validated against the official KoSIT validator. Germany's legal reference implementation. And when validation fails, every finding is mapped back to the exact field in your request, with a plain-language explanation and a concrete fix. The 422 response is honestly the thing I'm most proud of.
A few things that matter for this space: invoice content is never stored (processing is request-scoped, EU-based), there's a free validator you can use without an account, inbound invoices (UBL/CII) parse back into JSON, and ZUGFeRD/Factur-X hybrid PDFs are supported. SDKs for TypeScript and PHP.
Honest note: if you have a Java team and want to own e-invoicing entirely yourself, Mustangproject is solid open source.I compare the trade-offs openly in the docs. normbill is for teams who don't want to own KoSIT updates, decimal rounding math, and Schematron decoding forever.
You can try it without signing up.The playground runs the validation engine right in your browser.
Hope you like it!
Cheers!
About normbill on Product Hunt
“valid XRechnung — or the exact reason why not”
normbill was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #125 on the daily leaderboard. Generate and validate XRechnung and ZUGFeRD / Factur-X invoices with a simple JSON API. Instant API key. Real documentation. No sales call, free to start.
On the analytics side, normbill competes within API, Developer Tools and Tech — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how normbill performed against the three products that launched closest to it on the same day.
Who hunted normbill?
normbill was hunted by Michael Sathya Gorski. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of normbill including community comment highlights and product details, visit the product overview.
Michael Sathya Gorski