The September 2027 Invoice Deadline: Planning Advisory Work for French SMEs

France’s tax administration sets September 1, 2027, as the start date for mandatory electronic invoice issuance and e-reporting for in-scope small businesses and micro-enterprises. The separate requirement to receive electronic invoices begins September 1, 2026. These dates make the France 2027 SME invoice deadline a planning issue, not a last-minute task.

For portage salarial invoicing, the invoicing company’s size and role matter; a consultant’s personal status does not set its deadline. Public-sector invoices follow a separate process through Chorus Pro. A clear plan for French SME e-invoicing can help you prepare records, systems, and payment workflows in good time. See this SME implementation roadmap for practical planning steps.

Key Takeaways

• Invoice receipt becomes mandatory on September 1, 2026, for in-scope businesses.
• Issuing electronic invoices and sending e-reporting data begin on September 1, 2027, for in-scope small businesses and micro-enterprises.
• The invoicing company’s category matters for portage salarial invoicing.
• Invoices to public bodies use Chorus Pro, a separate system.
• Start planning early to test data, systems, and payment steps.

France 2027 SME invoice deadline: what French businesses need to prepare

France is rolling out electronic invoicing in stages. Your business size and the type of transaction will shape which dates and reporting duties apply.

Separate the receiving deadline from the issuing and e-reporting deadline

For businesses established in France and liable for VAT, receiving electronic invoices is scheduled to become mandatory on September 1, 2026. Large companies and mid-sized companies must also start issuing e-invoices and submitting e-reporting data on that date.

SMEs and microbusinesses are scheduled to begin issuing invoices electronically and reporting relevant data on September 1, 2027. This is the September 2027 e-invoicing deadline. Check your official business-size classification; a trading name or a recent headcount alone may not settle it.

Identify which advisory transactions fall under e-invoicing or e-reporting

Domestic business-to-business transactions may fall under e-invoicing, while sales to consumers or customers outside France may require e-reporting under the French e-reporting rules. The service provider’s profession does not decide the category; the customer and transaction details matter.

Confirm that your chosen Plateforme Agréée can handle the required data and workflow. Keep French VAT invoice requirements in view when checking invoice details, VAT treatment, and the information needed for reporting.

Plan advisory invoicing workflows for French SMEs and portage salarial consultants

Before setting up an invoice flow, confirm who buys the advisory service, who provides it, and who sends the invoice. This matters for French consultant e-invoicing, since the legal relationship—not just the person doing the work—shapes the process.

Map the client, the service provider, and the invoicing relationship

In portage salarial in France, the portage company employs the consultant and invoices the client. The consultant is an employee of that company, while the client buys the service from it. Record each party’s role before configuring your finance system.

Check which entity has the relevant French VAT and establishment status. Confirm the portage company’s business-size category, since it affects its e-invoicing deadline. If the consultant contracts directly with the client instead, document that arrangement separately. Direct payments to independent providers may trigger separate reporting duties; review the DAS 2 reporting rules.

Check the platform, invoice data, and service-payment process

For portage company invoicing, confirm which platform will receive and issue invoices. Agree on the client’s legal details, service description, VAT treatment, purchase order, and payment terms. Check that invoice data can move between the client’s system and the portage company’s finance tools.

Set a clear route for timesheets, approval, invoicing, and payment. Name the person who handles rejected invoices or missing data. A short test with a sample invoice can reveal gaps before the 2027 deadline.

Review portage terms and pay rules without assuming a guaranteed take-home amount

Review the employment contract and service agreement together. Check how fees, management charges, expenses, paid leave, and social contributions affect the consultant’s pay. IDCC 3219 Article 21 may be relevant to the employment terms; confirm its current wording and how it applies to the role.

Use the contract and a clear pay statement to explain how invoiced revenue is converted into salary. Do not present a projected take-home figure as guaranteed. The final amount can depend on approved expenses, deductions, and the work performed.

Build a practical September 2027 invoice-readiness checklist

A clear checklist helps you spot gaps before they affect billing or payment. Start with the entities and transactions in scope, then test each step from invoice creation to receipt.

Scope entities, transactions, and systems

List each legal entity, French establishment, VAT registration, and business unit. Classify domestic B2B, B2C, cross-border B2B, export, and public-sector flows. Record the applicable deadline for every entity and flow.

Map each system or manual step that creates or changes invoice data. Include ERP, billing, procurement, and finance tools. This inventory will guide your e-invoicing platform integration and help clarify the full SME invoice workflow.

Clean records and test complete invoice workflows

Review customer and supplier details, VAT data, payment terms, and required invoice fields. Correct gaps before testing. Run sample invoices through creation, validation, delivery, rejection, correction, and payment tracking.

Check that data stays accurate as it moves between tools. For consultants working through an umbrella company, include relevant contract and payment steps in your portage salarial compliance review.

Assign owners, train teams, and prepare for exceptions

Name an owner for each entity, system, and transaction flow. Train finance and sales teams on routine tasks, error handling, and escalation routes.

• Set a contact for platform and data issues.
• Write steps for rejected invoices and corrections.
• Plan how teams will track unresolved cases.

Conclusion

The France 2027 SME invoice deadline is part of a two-stage change. In-scope businesses must be able to receive invoices through a Certified Platform from September 1, 2026. The planned start date for SME invoice issuance and reporting duties is September 1, 2027.

Begin SME invoice planning early enough to select an accredited platform, map transaction flows, test invoices, and train staff. Readiness depends on the company’s actual systems and trading partners; an undated survey percentage is not a reliable basis for an individual implementation plan.

For portage salarial consultant invoicing, first confirm which entity signs the client contract and issues the invoice. Then check that entity’s size, scope, platform, invoice data, and reporting process. Keep client billing separate from the consultant’s employment and payroll terms.

Review the current IDCC 3219 Article 21 rules on minimum remuneration. Do not treat a take-home estimate or any visa, tax, pension, or other benefit as guaranteed. Clear roles and early checks can make the transition safer for your business and your consultants.