The verdict in three sentences
Mandatory e-invoicing arrives in waves across 2026-2027 for all VAT-liable businesses in France. Integrating the API via a Partner Dematerialization Platform (PDP) costs 5,000 to 20,000 EUR depending on your system. Anticipating now avoids the rush and non-compliance penalties.
The 2026-2027 timeline to know
The reform imposes two distinct obligations: reception (receiving e-invoices) and issuance (emitting in the right format via an approved platform). Dates depend on company size.
| Obligation | Large & mid-cap firms | SMEs & micro | Status |
|---|---|---|---|
| Receiving e-invoices | 1 Sept 2026 | 1 Sept 2026 | All companies |
| Issuing e-invoices | 1 Sept 2026 | 1 Sept 2027 | By size |
| E-reporting (transactions/VAT) | 1 Sept 2026 | 1 Sept 2027 | By size |
Key point: from September 2026, every company must be able to receive an e-invoice, whatever its size. Issuance follows by schedule. Dates remain those published by the tax authority; always check the current version.
PDP, PPF, PA: which platform to choose
The system relies on intermediary platforms. The Public Invoicing Portal (PPF) acts as a directory and hub, while private PDPs handle issuance/reception.
| Component | Role | 2026 indicative cost |
|---|---|---|
| PDP (partner platform) | Issue/receive, formats, e-reporting | 10-50 EUR/mo + volume |
| PPF (public portal) | Directory, hub | Free (public service) |
| API integration to your IS | Connect ERP/software to the PDP | 5,000 - 20,000 EUR |
| Factur-X format | PDF + structured XML | Included in the build |
Choosing an approved PDP is strategic: it guarantees compliance, handles formats (Factur-X, UBL, CII) and manages e-reporting to the tax authority.
Integration cost by system
The budget depends on your current invoicing software and volume. Software already connected to a PDP needs little; an in-house or legacy ERP needs a custom API integration.
| Situation | Effort | 2026 cost (EUR) |
|---|---|---|
| Market software already PDP-ready | Configuration | 2,000 - 5,000 |
| Standard ERP to connect to a PDP | API integration | 5,000 - 12,000 |
| In-house app/ERP | API dev + Factur-X | 12,000 - 20,000+ |
Mini case study
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Élodie, CFO of a 45-employee industrial SME in Grenoble, issues 800 invoices/month from an in-house ERP. She must be ready for issuance in September 2027 but wants to anticipate. API integration to an approved PDP with Factur-X generation: 13,500 EUR, plus 30 EUR/mo PDP subscription. By automating, she removes printing, postage and manual chasing: about 1,800 EUR/month in direct savings. The integration is paid back in 8 months, compliance included.
FAQ
Who is affected by e-invoicing?
All VAT-liable businesses in France, whatever their size. Reception becomes mandatory for everyone from September 2026; issuance follows by size through 2027.
What exactly is a PDP?
A Partner Dematerialization Platform, approved by the tax authority, that issues and receives your invoices in the right format and transmits VAT data. It's the required path to compliance.
Is the Factur-X format mandatory?
Factur-X (readable PDF + structured XML) is one of the core accepted formats, alongside UBL and CII. A good integration generates the expected format automatically, no double entry.
How much does the API integration cost?
Between 5,000 and 20,000 EUR depending on your system. Already PDP-ready software costs less; an in-house ERP needs custom development. Add the monthly PDP subscription.
What's the risk of non-compliance?
Administrative penalties apply, and above all the practical inability to issue or receive compliant invoices. Anticipating avoids the costly last-minute rush.
Let's scope your project. Tell us your current invoicing software and volume: we'll scope the PDP integration between 5,000 and 20,000 EUR for smooth 2026-2027 compliance. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
