OuiFacture – Facture électronique Factur-X for WooCommerce

OuiFacture turns your WooCommerce store into a compliant French electronic invoicing machine. Every order automatically gets a legally compliant PDF invoice with an embedded Factur-X XML file (PDF/A-3, profile EN 16931), the format required by the French e-invoicing reform (réforme de la facturation électronique, échéances 2026-2027).

Automatic. On every order.

Features

• Automatic generation of a Factur-X invoice when the order reaches the status you choose (processing, the default, or completed), no clicks needed. An order that jumps straight to completed is invoiced then; each order is invoiced exactly once.
• PDF/A-3 with embedded EN 16931 CII XML, validated against the official Factur-X XSD schemas at generation time.
• French legal invoice layout: seller block (raison sociale, forme juridique, capital, RCS, SIRET, TVA), buyer block, line items HT, VAT breakdown by rate, totals HT/TVA/TTC, payment terms, and the mandatory legal mentions (catégorie d’opération, pénalités de retard, indemnité forfaitaire de 40 €, escompte, option TVA sur les débits si activée).
• Gap-free sequential numbering (prefix + year + counter, optional yearly reset), race-safe, numbers are immutable once issued, regeneration never changes the number.
• B2B checkout fields: optional SIRET and intra-community VAT number on the classic checkout, validated (Luhn / FR VAT key) and shown in the admin order screen and in the XML.
• Customer access: download link in My Account → Orders, on the order-received page, and optional PDF attachment to the “order completed” email.
• Admin control: metabox on every order with Generate / Regenerate / Download.
• Secure storage: invoices live in a protected uploads folder with unguessable file names and are only served through authenticated endpoints.
• HPOS compatible (High-Performance Order Storage).
• No external calls, no tracking: everything is generated locally on your server.

Compliance notes

• Invoices embed the CII XML at the EN 16931 profile of Factur-X 1.x, validated against the official XSDs before the PDF is written.
• Invoice numbers are sequential and gap-free; a number is only consumed once the invoice files have been written successfully.
• On uninstall, the plugin removes its settings but keeps generated invoices: French law requires you to retain them for 10 years.

Limitations of this version

• The SIRET/VAT checkout fields are available on both the classic (shortcode) checkout and the block-based checkout (WooCommerce 8.9 or later for the block checkout fields; earlier versions still get automatic invoices, just without the two B2B fields on the block checkout).
• Refunds do not produce credit notes (avoirs); the original invoice is kept unchanged, as required (an issued invoice is immutable).
• One VAT category per order line (standard/zero). Margin schemes, VAT exemption reasons and non-EUR specifics beyond currency code pass-through are not handled.
• PDF/A-3 conversion covers embedded file relationships, XMP metadata and output intents as produced by the bundled Factur-X writer; full ISO 19005-3 conformance of exotic source PDFs is not re-verified at runtime.
• The buyer’s electronic routing identifier (BT-49, French rule BR-FR-12) is only included when the buyer supplied a SIRET at checkout (the B2B fields). Orders from a private buyer with no SIRET do not carry it: there is no such identifier to supply truthfully for an individual.

1. Upload the plugin to /wp-content/plugins/ or install it through the WordPress plugin screen.
2. Activate it (WooCommerce must be active).
3. Go to WooCommerce → OuiFacture and fill in your seller identity (raison sociale, SIRET, n° TVA, adresse…). These appear on every invoice.
4. Choose the trigger status (default: processing). Done, invoices now generate automatically.

1. 

   Settings: seller identity, legal mentions, numbering and generation trigger.

2. 

   Order screen: OuiFacture metabox with the generated invoice and download button.

3. 

   A generated Factur-X invoice (French legal layout, PDF/A-3 with embedded EN 16931 XML).

4. 

   My Account → Orders: customer invoice download link.

5. 

   Classic checkout: optional SIRET and intra-community VAT (B2B) fields.

1.0.6

• The SIRET and intra-community VAT fields now also appear on the block-based checkout (WooCommerce 8.9 or later), registered through WooCommerce’s own additional-checkout-fields API, with the same server-side validation (Luhn key for the SIRET, French VAT key) and the same order meta, admin display and Factur-X XML pickup as the classic checkout. Older WooCommerce versions keep the classic fields, unchanged.

1.0.5

• Punctuation and wording cleanup: 20 strings (including the plugin’s own display name and three strings on the customer-facing PDF invoice) no longer use an em or en dash. No functional change.
• Readme updated to describe the platform story truthfully: OuiFacture is not a Plateforme Agréée (PA, formerly called PDP); transmission and e-reporting filing run through the merchant’s own platform account, via the separate OuiFacture Premium add-on.

1.0.4

• Fixed: invoices now pass the French BR-FR-05 rule. The three existing legal-mention notes (late payment penalty, recovery indemnity, discount) now carry the required SubjectCode (PMD, PMT, AAB); two further mandatory notes were added, operation category (REG, new setting, default “delivery of goods”) and, only when the option is used, VAT on debits (TXD, new optional setting).
• Fixed: the seller’s and buyer’s SIRET now also appears as an electronic routing identifier (BT-34/BT-49, French rules BR-FR-13/BR-FR-12), in addition to the existing legal-organization identifier.
• Fixed: the seller’s and buyer’s legal-organization identifier (BT-30/BT-46) now correctly carries the 9-digit SIREN under scheme code 0002. It previously carried the full 14-digit SIRET under that scheme, which is the SIREN scheme; the SIRET is now correctly emitted separately (scheme 0009).
• Verified against both the core EN 16931 Schematron and the French BR-FR-* rules together (confactura.fr validator), not the XSD alone.

1.0.3

• Plugin URI added to the header, pointing to https://ouifacture.fr/.
• Invoices no longer plug a totals rounding gap into the RoundingAmount field (BT-114), which can fail the EN 16931 total-identity rules (BR-CO-15, BR-CO-16). Any gap between the sum of the lines plus VAT and the order total now rides its own visible, zero-rated line (“Ajustement d’arrondi”).
• New optional IBAN setting (Seller identity section). When set, invoices paid by bank transfer now carry the payee account identifier (BT-84) the EN 16931 rules require for that payment means. Leave it empty and nothing changes.

1.0.2

• Translations are now served through translate.wordpress.org: the bundled .po/.mo files are no longer packaged and the obsolete load_plugin_textdomain() call has been removed (not needed since WordPress 4.6).
• Housekeeping following the plugin review; no change to invoice generation, numbering or output.

1.0.1

• Plugin display name now ends in “for WooCommerce” (WordPress.org trademark guidelines).
• The default generation trigger is now processing (was completed): invoices are issued as soon as payment is received. Orders that skip straight to completed are still invoiced there, exactly once per order.
• French translation updated.

1.0.0

• Initial release: automatic Factur-X (EN 16931) generation, gap-free numbering, B2B checkout fields, customer downloads, email attachment, HPOS support, French translation.