The first week passed without a blackout. September 1st, 2026 came and went, France’s mandatory B2B e-invoicing reform went live, and the servers of the Approved Platforms (Plateformes Agréées, PAs) held up. But the five-day post-go-live snapshot reveals two coexisting realities: a technical ecosystem that broadly delivered on schedule, and a business population where roughly half had not yet begun the compliance process at the moment of the switchover.
What Happened Between September 1st and 5th
Day one confirmed what observers had anticipated: large companies and prepared mid-market firms (ETIs) issued their first structured invoices — Factur-X, UBL 2.1, or CII — through their Approved Platforms, with no major incidents reported. The 145 PAs registered by France’s tax authority (DGFiP) as of September 1st absorbed the initial flows.
What came as a surprise was the scale of demand on helplines. Several ERP and accounting software vendors — including Sage, Cegid, and Generix — reported support saturation in the opening days. SMEs that believed they had automatic reception in place discovered their software was not yet configured to ingest incoming e-invoice flows. The rule is straightforward: from September 1st, all French VAT-registered businesses, regardless of size, must be able to receive electronic invoices via an approved platform. Responding “please resend a PDF” to a large-enterprise supplier is no longer compliant.
The DGFiP Tolerance Doctrine: What It Covers and What It Does Not
France’s tax authority (DGFiP) confirmed a good-faith tolerance posture without suspending the legal framework (DGFiP go-live doctrine, published before September 1st 2026). Three conditions allow a business to invoke this tolerance:
- Document the difficulties encountered (dated support tickets, PA contract in progress)
- Maintain an “active compliance trajectory”
- Not treat non-compliance as a permanent situation
What the tolerance does not cover: total inertia. A business that has made no contact with any PA, has no documented compliance project, and continues issuing only PDF invoices by email — with no support ticket or contract in progress — is exposed to sanctions as soon as the DGFiP begins enforcement.
The applicable penalties, formalized in France’s 2026 Finance Act (Article 1788 D of the French Tax Code), are:
- €50 per invoice not issued in electronic format, capped at €15,000 per year
- €500 per missing transmission in e-reporting (B2C customers or foreign clients), capped at €15,000 per year
- €500 then €1,000 every three months for businesses not connected to a PA, following formal notice
Who Is Most Behind?
The agricultural sector is the most documented case: 71% of agricultural professionals declared themselves unprepared as of August 2026, according to Terre-net. This is not accidental. Accountancy firms specialising in agriculture had been warning since spring about the combination of a heavily micro-business sector, limited digitisation, standalone management tools, and low awareness of the reform.
Beyond agriculture, sectoral observatory data published in early September shows stark disparities by company size:
- Large companies (250+ employees): 60–70% reported being ready or near-ready before September 1st
- Mid-market firms (50–250 employees): 40–50% had selected a PA or entered discussions
- SMEs (10–50 employees): 20–30% had initiated the process
- Micro-businesses (under 10 employees): fewer than 15% were aware of the requirements (source: observatoire comparateur-efacturation.fr, September 2026)
Liberal professions, building-trade sole traders, and self-employed workers invoicing primarily consumers represent a blind spot: they are not subject to B2B e-invoicing on their B2C sales, but they still need to connect to a PA in order to receive invoices from large-enterprise and mid-market suppliers, and to transmit their transaction data via e-reporting.
e-Reporting: The Forgotten Obligation
Five days post-switchover, a pattern is emerging from field reports: many accounting teams worked on e-invoice compliance and overlooked the parallel e-reporting obligation. This mechanism requires that all transaction data outside the B2B e-invoicing scope — B2C sales, invoices to foreign customers, received payments — be transmitted to the DGFiP via a PA or the Public Invoicing Portal (PPF). The cadence is demanding: every ten days for transaction data, monthly for payments.
A mid-market company that has perfectly configured its e-invoice flow can still be non-compliant if its e-reporting is not activated. The two obligations are configured independently, even when they run through the same PA.
What to Watch Going Forward
The start of DGFiP enforcement. France’s tax authority applied a similar tolerance posture in Belgium in spring 2026 (a first-week grace period, followed by progressive enforcement from the second half of the year). The goodwill window will not last: businesses that can document an active compliance project are protected; others face growing exposure as the tolerance closes.
Integrator and vendor capacity. Queues for PA onboarding have been long since July. In September, demand remains strong. SMEs waiting until late 2027 to act risk the same situation: onboarding lead times of four to eight weeks, saturated support teams.
The SME countdown: 12 months. September 1st, 2027 is exactly 365 days away. SMEs, micro-businesses, and sole traders have until that date to activate the e-invoicing emission obligation. That is not a reason to wait: implementation timelines, vendor capacity constraints, and the need to test flows in real conditions all point to launching the project no later than Q1 2027.
For context on how the reform began, see our Day 2 post-go-live review and our 2026–2027 e-invoicing ERP roadmap: PAs, the national directory, and e-reporting.
