France Confirms September Mandate With Practical Guide

On 10th July, the French tax authorities published a Practical Guide to Support the Implementation of the Reform, providing businesses with operational guidance ahead of the country's B2B e-invoicing mandate on 1st September 2026.

The publication sends a clear signal that France remains committed to its September go-live date and is intended to support implementation rather than indicate any further delay. It also helps dispel recent speculation that the mandate could be postponed until December 2026.

Here are the 10 key takeaways from the guidance:

The 10 Main Takeaways

1. The 1st September deadline remains unchanged. Large companies and mid-sized businesses must be able to issue electronic invoices from 1st September 2026, while all businesses within scope must be capable of receiving them through a registered Accredited Platform. The guidance does not delay or suspend these obligations.
2. Penalties will not be applied automatically during the start-up period. DGFiP says businesses experiencing genuine implementation difficulties will not be sanctioned during the initial phase, provided they can demonstrate a serious and active compliance programme. This tolerance will not protect businesses showing inertia, avoidance or a lasting refusal to comply.
3. Business continuity takes priority. Companies should not stop processing invoices, block payments or interrupt commercial activity because an invoice has not followed the correct electronic route. The reform changes how invoices are transmitted, but not the underlying commercial debt, accounting treatment or payment obligation.
4. PDF, email and paper invoices may still be processed. An invoice received through email, PDF or paper after 1st September may still be processed, paid, accounted for and used to support VAT deduction, provided it relates to a genuine transaction and contains the required information. However, this does not mean those channels satisfy the new transmission obligation.
5. Alternative channels can be used temporarily when electronic transmission fails. Where platform downtime, routing problems, invoice rejection or another technical issue risks disrupting activity or cash flow, businesses may send a copy through an established alternative channel. This should be treated as a continuity measure, not the permanent target operating model.
6. Businesses should move ready invoice flows into production immediately. Companies should not wait until every entity, system, customer or invoice type is fully ready. DGFiP expects businesses to begin with the flows that can be processed electronically, prioritise important volumes and maintain a defined remediation plan for the remaining scope.
7. Regularisation is expected, but not necessarily in every individual case. Where an invoice was sent outside the electronic circuit, the business may subsequently transmit the same invoice electronically or otherwise organise its regularisation. DGFiP describes this as preferable rather than systematically mandatory, but businesses must be able to show an active path towards full compliance.
8. Duplicate control will be critical. Where the same invoice is received or transmitted through more than one channel, businesses must prevent double payment, double accounting, double VAT deduction and duplicate reporting. Copies should be clearly linked to the original invoice and identified as a duplicate or continuity copy where possible.
9. Documentation will determine whether a business benefits from tolerance. Companies should retain evidence of platform selection, contracts, implementation schedules, tests, error messages, support tickets, communications with providers and customers, temporary operating measures and planned corrective actions. A general statement that the business is “working on compliance” will not be enough. The central message is: France is offering operational flexibility, not legal flexibility. Businesses do not need to be perfect on day one, but they must be demonstrably moving, documenting problems and correcting failures.
10. E-reporting failures do not invalidate invoices or stop business activity. Temporary problems transmitting transaction or payment data do not affect the validity of the underlying invoice, the customer’s obligation to pay, the supplier’s ability to continue trading or the buyer’s VAT deduction. Businesses should continue operating, preserve the relevant data, document the failure and submit or correct the e-reporting data once the technical issue is resolved.

Link to the PDF [In French]

French Tax Authority

This content is intended to share insights and practical considerations based on industry experience. It does not constitute legal, regulatory, or financial advice. Regulatory requirements vary by jurisdiction and circumstance, so any compliance-related matters should be reviewed and validated with your own professional advisors.