2026/2027 timeline: what to expect

From 1 September 2026, every business must be able to receive an electronic invoice. Here are the dates that matter and how OstraOS gets you ready.

Updated on May 7, 20261 min readcalendrierréglementationphare

B2B electronic invoicing is becoming progressively mandatory in France. Two dates frame the transition, and both directly affect your shellfish farm — regardless of size.

1 September 2026: receiving becomes mandatory for all

All companies, with no size exemption, must be able to receive an electronic invoice. In parallel, large companies and mid-caps must issue them.

Concrete consequence for growers: if one of your buyers is a large retailer, they can require from that date that your invoices reach them electronically. Anticipating becomes a commercial topic, not only a regulatory one.

1 September 2027: mandatory issuance for SMEs and small businesses

The obligation to issue electronic invoices extends to every company, including most shellfish and aquaculture operations. By that date, paper or plain PDF invoices are no longer accepted by the tax administration.

Regulatory framework

The obligation builds on the European EN16931 standard and flows through state-accredited dematerialization platforms. Sending a PDF by email no longer has legal weight after these dates.

What OstraOS already delivers

  • Native generation of invoices in Factur-X, UBL, CII and EDIFACT INVOIC formats, EN16931-compliant.
  • Connection to several accredited dematerialization platforms, configurable to your choice.
  • End-to-end tracking of an electronic invoice’s official lifecycle, from filing to collection.
  • French legal notices (late penalties, flat-fee indemnity) printed automatically.
  • Multi-rate VAT properly broken down in both the electronic file and the PDF.

Our advice

Start testing now with a few pilot invoices. The learning curve, both for your team and your customers, is much gentler over six months than over six weeks.

Penalties for non-compliance

Beyond the tolerance period set by the administration, penalties are dissuasive: a fine per non-compliant invoice, capped annually, and a separate fine for each VAT e-reporting breach. The best protection is anticipation.

Remember

Mandatory reception for everyone on 1 September 2026; full issuance from 1 September 2027. OstraOS covers both flows, in public standard formats and with the accredited platform of your choice.

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