The verdict in three sentences
Since 1 September 2026, every VAT-registered business in France must be able to receive e-invoices, and large and mid-sized companies must already issue them; SMEs and micro-businesses will issue from 1 September 2027. For an online store selling to businesses, adapting means choosing an approved platform (EUR 10 to 300 per month depending on volume) and a store and ERP integration of EUR 3,000 to 15,000 excl. VAT. Consumer sales do not become e-invoices, but they fall under e-reporting of transaction data.
The timeline that applies to your store
The reform does not just change the PDF format. A B2B invoice becomes a structured file (Factur-X, UBL or CII) sent through an approved platform, with additional mandatory data: customer SIREN number, delivery address, transaction category (goods, services, mixed), and the VAT-on-debits option. B2C sales and sales to foreign customers are subject to periodic e-reporting.
| Obligation | Large and mid-sized companies | SMEs and micro-businesses |
|---|---|---|
| Receiving e-invoices | 1 September 2026 | 1 September 2026 |
| Issuing B2B e-invoices | 1 September 2026 | 1 September 2027 |
| E-reporting of B2C and international sales | 1 September 2026 | 1 September 2027 |
| E-reporting of payment data (services) | 1 September 2026 | 1 September 2027 |
| Fine per non-compliant invoice | EUR 15 per invoice | EUR 15 per invoice |
| Fine per e-reporting failure | EUR 250 per transmission | EUR 250 per transmission |
An SME therefore still has a few months before issuing, but it already receives e-invoices from its suppliers. Waiting until summer 2027 to adapt the store is risky: approved platforms and integrators will be overloaded.
What to adapt in the store and ERP
A B2B store (WooCommerce, PrestaShop, Shopify, Magento or custom) often generates its own PDF invoices. With the reform, two architectures are possible: either the store sends the order to the ERP, which invoices and transmits to the approved platform, or the store itself produces a Factur-X file and sends it to the platform via API.
| Workstream | Description | 2026 budget (excl. VAT) |
|---|---|---|
| Capturing mandatory data at checkout | SIREN, delivery address, transaction type, B2B or B2C customer | EUR 1,000 to 3,000 |
| Generating Factur-X or UBL from the store | Compliant structured file, continuous numbering | EUR 1,500 to 4,000 |
| API connection to the approved platform | Sending, statuses (submitted, rejected, paid), receiving | EUR 1,500 to 5,000 |
| B2C and export e-reporting flow | Aggregating consumer and international sales | EUR 1,000 to 3,000 |
| ERP or accounting software update | Configuration, status sync, reconciliation | EUR 1,000 to 4,000 |
| Total depending on architecture | EUR 3,000 to 15,000 |
On the approved platform side, 2026 prices range from about EUR 10 to 30 per month for a small business to EUR 100 to 300 per month above a few thousand invoices, sometimes with a per-invoice fee between EUR 0.05 and 0.30. Check API quality, lifecycle status handling and archive export.
The most common pitfalls
Three mistakes come up often. The first: not distinguishing a business customer from a consumer at checkout, which distorts both invoices and e-reporting. The second: credit notes and refunds handled manually outside the flow, which create discrepancies. The third: forgetting deposit invoices and subscriptions, which are also covered by the reform.
Mini case study
Julien, e-commerce director of a Lyon-based SME selling workshop supplies online, issues 2,400 B2B invoices and 1,500 B2C sales per month. Today the PrestaShop store generates PDFs that an assistant re-keys into Sage for accounting, at 2 minutes per invoice, i.e. 80 hours per month.
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He chooses an approved platform at EUR 120 per month and a direct store, Sage and platform integration for EUR 9,500 excl. VAT, with Factur-X generation, statuses and B2C e-reporting. Re-keying disappears: 80 hours x EUR 32 fully loaded = EUR 2,560 saved per month. Net recurring cost: EUR 120. The project pays back in 4 months, and Julien will be compliant by September 2027 without a last-minute rush.
FAQ
Does my SME already have to issue e-invoices?
No, issuing becomes mandatory for SMEs and micro-businesses on 1 September 2027. However, receiving has been mandatory for everyone since 1 September 2026.
Are consumer sales affected?
They do not become e-invoices, but their data must be transmitted through e-reporting, from September 2027 for SMEs. A failure costs EUR 250 per transmission.
How much does an approved platform cost?
As a 2026 order of magnitude, EUR 10 to 30 per month for a small business and EUR 100 to 300 per month for several thousand invoices. Some also charge EUR 0.05 to 0.30 per document.
Do we need to change e-commerce platforms?
Rarely: WooCommerce, PrestaShop, Shopify and custom stores can produce Factur-X or go through the ERP. The adaptation budget stays between EUR 3,000 and 15,000 excl. VAT.
How long should we plan for the project?
Allow 6 to 10 weeks, including 2 to 3 weeks of testing with the approved platform. Starting before March 2027 avoids integrator overload.
Let's scope your project. We audit your B2B store and ERP, help you choose the right approved platform and price the Factur-X and e-reporting integration ahead of the 2027 deadline. 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.