E-Invoicing in the EU
Electronic invoicing is rapidly becoming mandatory across the EU, driven by the European Commission's VAT in the Digital Age (ViDA) proposal and individual member state mandates. For businesses operating across multiple EU countries, understanding the e-invoicing landscape is essential for compliance and efficiency.
The EN 16931 standard
EN 16931 is the European standard for the semantic data model of an electronic invoice. It provides a common format that ensures interoperability across all EU member states. The standard supports two syntaxes: UBL (Universal Business Language) and CII (Cross-Industry Invoice), both of which are accepted for B2G (business-to-government) invoicing throughout the EU. The standard defines mandatory fields such as seller and buyer identification, invoice line details, tax breakdowns and payment instructions, ensuring that invoices can be processed automatically regardless of which country they originate from.
Peppol network
Peppol (Pan-European Public Procurement On-Line) is the infrastructure for exchanging electronic documents, including invoices, across borders. Originally developed for public procurement, Peppol is increasingly used for B2B invoicing as well. Through a Peppol Access Point, businesses can send and receive compliant invoices to any other Peppol participant in the network. The network operates on a four-corner model: the sender connects to their Access Point, which routes the document through the Peppol network to the recipient's Access Point, which delivers it to the recipient. This means you only need one connection to reach all participants.
Country-specific mandates
- Italy: Mandatory B2B and B2C e-invoicing since 2019 via Sistema di Interscambio (SdI). The most advanced EU system, processing over 2 billion invoices annually
- France: B2G mandatory since 2020. B2B e-invoicing mandate phased in from 2026, starting with large enterprises and gradually extending to all businesses
- Germany: B2G mandatory. B2B e-invoicing mandate planned for 2025-2027, with a reception obligation starting January 2025
- Spain: SII real-time invoice reporting for large companies. B2B mandate in development under the Crea y Crece law
- Poland: KSeF (Krajowy System e-Faktur) B2B mandate planned for 2026 after an initial postponement
- Belgium: B2B e-invoicing mandatory from January 2026 for all VAT-registered businesses
- Romania: RO e-Factura system mandatory for B2B transactions since January 2024
ViDA: The EU-wide vision
The VAT in the Digital Age proposal aims to establish EU-wide digital reporting requirements and eventually a harmonized e-invoicing framework. Under ViDA, member states will be allowed to mandate B2B e-invoicing without requiring EU derogation, and a digital reporting system for intra-EU transactions will be implemented by 2030. The proposal also introduces real-time digital reporting for cross-border transactions, which will eventually replace the current recapitulative statements (EC Sales Lists). This represents a fundamental shift toward real-time tax reporting across the entire EU.
Preparing your business
Even if e-invoicing is not yet mandatory in your primary market, preparing now makes sense. Ensure your accounting software can generate and receive EN 16931 compliant invoices, evaluate Peppol Access Point providers, and build internal processes for handling structured invoice data. Early adoption often reveals integration issues that are easier to fix before a mandate deadline creates time pressure.
Zunapro provides multi-country e-invoicing solutions, connecting businesses to Peppol and country-specific systems across the EU through a single integration point.
