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Factur-X, XRechnung & EN 16931

Practical e-invoicing guides, with runnable code.

EN 16931, XRechnung, Factur-X, ZUGFeRD: Europe's e-invoice formats

One European semantic standard, two XML syntaxes, one hybrid PDF, and two national mandates. How Europe's e-invoice formats fit together, and what to validate.

24 August 2026 · 3 min read Read the article →

24 August 2026

Validate an XRechnung invoice in Python

XRechnung 3.0.2 is required for invoices to German public buyers, and B2B is phasing in. Validate against the official rule set in a few lines of Python.

Read the article → 2 min read