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SXN Labs
2026 mandate

2026 mandate: does your business software emit Factur-X?

We wrote the gem that does it. We integrate it for you in 5 days.

Free 30-min diagnostic, we check your case Is your PDF already compliant? Test it in 30 seconds
Context

The 2026 mandate in 30 seconds

01

Who's affected?

Any French VAT-registered business issuing B2B invoices, even small ones.

02

When?

Mandatory reception from September 2026. Mandatory issuance in September 2027 for SMEs, September 2026 for large enterprises and mid-caps.

03

What if you're not ready?

Rejected invoices, payment delays, penalties. Direct operational risk on your cash flow.

Our solution

The gem you've been waiting for

We published einvoicing and einvoicing-connect on RubyGems. Open source, used in production by several clients. We integrate them into your existing Rails system in 5 days.

Are you a developer? See the einvoicing gem →

Proof

Public code, and invoices already going out

You don't have to take our word for it. The gem is public and auditable, and the invoicing chain already runs at our clients.

SOFIDIAL: custom ERP, accounting and invoicing automated end to end.

He automated complex processes: supplier catalog imports, stock synchronization, procurement, billing and accounting entries, thus providing remarkable operational efficiency. […] 100% of the accounting chain automated.
  • Public gem, auditable code

    einvoicing and einvoicing-connect are open source, published on RubyGems and GitHub. Have your engineers read them before you even talk to us.

  • Compliance you can verify, not just claim

    Outputs are validated against the official EN 16931 XSDs (CII D16B, UBL 2.1) and the Peppol Schematron rules.

  • Test it on your own invoices

    Drop an invoice into our free Factur-X validator: profile, embedded XML, VAT and totals in seconds.

    Open the validator →
Tech stack

A modern, French stack built to last

Built to last 10+ years

Hosted in France 🇫🇷

GDPR-compliant

Code + docs are yours

5 days to be ready, when do we start?

30 minutes to check your case: current stack, volume, target platform (PPF, PDP). You walk away with a concrete integration plan and a fixed quote.

Free 30-min diagnostic, we check your case

Are you a developer? See the gem

Is your PDF already compliant? Test it in 30 seconds