E-Invoicing Becomes Mandatory in France on 1 September 2026: What Every Business Must Do

There is a deadline coming that a lot of French businesses have not registered, partly because the reform has been postponed so many times that people stopped believing in it. On 1 September 2026, every business in France that is registered for VAT must be able to receive electronic invoices. Not send them. Receive them. That obligation applies to everyone, regardless of size, including micro-entrepreneurs operating under the franchise en base who do not charge VAT at all. The obligation to send electronic invoices arrives in two waves. Large companies and mid-caps must issue electronically from 1 September 2026. Small and medium businesses, micro-enterprises and independents follow on 1 September 2027. The reception deadline is the one catching people out, because it sounds passive. It is not. What "receiving an electronic invoice" actually means An electronic invoice in the legal sense is not a PDF attached to an email. That is a paper invoice in a digital envelope, and it does not satisfy the requirement. A compliant electronic invoice is a structured file that machines can read, transmitted through an approved platform. Three formats are recognised: UBL, CII, and Factur-X, which is a hybrid carrying a readable PDF with a structured XML file embedded inside it. Factur-X is the format most small businesses will end up using, because a human can still open it and see a normal invoice. The transmission has to go through a Plateforme Agréée, previously called a Plateforme de Dématérialisation Partenaire or PDP. These are private operators registered by the state. There is also a public portal, but it functions as a directory and routing layer rather than a free invoicing tool, which is a point of confusion worth clearing up early. So from September, when a supplier sends you an invoice, it will arrive in a platform, not in your inbox. If you have not chosen a platform and registered on it, you have nowhere for those invoices to land. Who this affects Every business subject to VAT in France, for domestic business-to-business transactions. That includes companies of every size and micro-entrepreneurs. Being under the franchise en base does not exempt you. Not charging VAT is not the same as not being within the scope of the reform. Transactions with consumers are not covered by the e-invoicing obligation, but they are covered by e-reporting, which also starts on 1 September 2026. E-reporting means transmitting transaction data to the tax administration for sales that do not produce an e-invoice: retail sales to individuals, and cross-border transactions. The invoice mentions that change From 1 September 2026, four new fields become mandatory on invoices: The client's SIREN number The delivery address, where it differs from the billing address Whether the transaction is a supply of goods, a supply of services, or both Where applicable, the option to pay VAT on debits There is also a wording change that affects anyone under the franchise en base. The familiar line "TVA non applicable, art. 293 B du CGI" is replaced by a reference to the Code des impositions sur les biens et services. A tolerance period runs to 31 December 2027, during which the old reference remains acceptable, so there is no need to panic about reprinting anything immediately. What to do before September Choose a platform. This is the one thing that cannot be skipped. Compare on connection to your existing accounting tool, the volume you handle, what the platform does beyond bare transmission, and price. Many accounting packages used by French SMEs are either becoming approved platforms themselves or partnering with one, so start by asking your existing provider what their plan is. It is often the shortest path. Clean your supplier and client data. Every business partner now needs a correct SIREN on file. Invoices will be routed by identifier, so wrong or missing SIRENs cause failures that are tedious to unpick later. Decide who monitors the platform. Invoices arriving in a platform rather than an inbox is a genuine workflow change. If nobody is assigned to check it, invoices will sit unnoticed and get paid late, which brings its own penalties. Talk to your accountant now, not in August. Every accountant in France is having this conversation with every client at the same time. Being early is worth a lot. The part that is actually good news Structured invoices are machine-readable by definition. That means the manual re-keying that consumes a chunk of every small company's admin week has an expiry date. Once invoices arrive as data rather than as PDFs, matching them against payments, spotting duplicates, flagging what is overdue and pushing entries into your accounts stops being typing and starts being automatic. Tools connected across banking and accounting can act on structured invoice data in ways they never could with a scanned PDF. Mirage Cloud is one of the platforms building for this. It connects to Qonto for banking, Pennylane for accounting and Yousign for signatures, with an agent scoped specifically to French accounting and VAT questions. That combination of French tools is the part that matters here, because the reform is French and generic international automation tools are not built around it. The reform will feel like an administrative burden for about six months. After that, for most small businesses, it will quietly remove work that nobody enjoyed doing. The one thing not to do is wait. The reception obligation has no size exemption and no grace period, and 1 September is close.