This section brings together practical tools and resources to support stakeholders in implementing and monitoring electronic invoicing in line with the European Standard (EN 16931) and Directive 2014/55/EU. The tools below offer country-level insights, technical artefacts, monitoring dashboards, and compliance references essential for policy makers, service providers, and IT implementers. 

eInvoicing Country Factsheets  

The factsheets provide an up-to-date overview of eInvoicing implementation in 27 EU Member States and 3 additional countries. Each factsheet includes information on: 

• B2G, B2B and B2C invoicing mandates 

• Applicable legal requirements and operating model 

• National operating platforms and syntaxes used 

• Core Invoice Usage Specifications (CIUS) adoption at national level 

• VAT reporting and monitoring mechanisms 

These factsheets facilitate awareness, benchmarking and policy alignment across Europe. 

Registry of supporting artefacts to implement EN 16931 

This registry contains machine-readable validation artefacts supporting the semantic data model defined in EN 16931. It includes: 

• Syntax bindings for UBL 2.1 and UN/CEFACT CII 

• Validation rules and Schematron files 

• Sample files for testing and development 

• Artefacts for the core standard and relevant Core Invoice Usage Specifications (CIUS) 

This registry facilitates correct technical implementation and promotes interoperability between systems and countries. 

eInvoicing Monitoring Dashboard 

This dashboard provides quantitative insights into the reuse of the eInvoicing Building Block across the EU. It includes data on: 

• Number of projects or entities reusing the solution 

• Geographical spread of adoption 

• Trends over time in stakeholder uptake 

This dashboard promotes transparency and enables tracking of eInvoicing progress across Member States and other relevant stakeholders. 

Obtaining a copy of the European standard on eInvoicing 

This page provides guidance on accessing the EN 16931 standard developed by CEN (European Committee for Standardization). It includes links to the official CEN webshops where the standard can be purchased in various languages and formats. The page also explains the difference between the freely available supporting materials and the official standard text. 

Compliance with eInvoicing Directive 

• This page outlines the main legal obligations arising from Directive 2014/55/EU, which requires the acceptance of compliant eInvoices in public procurement. It covers:the scope of the Directive; 

• deadlines for central and sub-central contracting authorities; 

• the relationship with the European standard; 

• Member States’ responsibilities for national implementation. 

The page also includes contextual links to national transposition measures and related EU procurement legislation. 

Compliance with eInvoicing Standard 

• This page details the criteria for evaluating whether an eInvoicing solution complies with the European standard (EN 16931). It covers:conformance requirements for UBL 2.1 and CII syntaxes; 

• use of validation tools and artefacts; 

• CIUS and Extension use policies; 

• documentation of compliance evidence. 

This page supports implementers in ensuring their solutions are technically and semantically aligned with the standard, both in national and cross-border contexts.