EU – Intra-EU B2B E-Invoicing: CEN Adopts Revision to the Standard

On February 13, 2026, the EU National Standard Body (CEN) adopted a revision to the EU standard on e-invoicing (EN 16931-1), which was originally designed exclusively for B2G e-invoicing procurement. The updates were necessary because the initial version of the project was designed for B2G transactions, which are more complex. 

This was an expected and necessary move, in full alignment with the VAT in the Digital Age(ViDA) project, which mandates full intra-EU interoperability for B2B transactions. The ViDA reform mandates full-scale reform for intra-EU B2B transactions. Adoption of mandatory E-Invoicing for intra-EU B2B transactions and near real-time digital reporting entails a significant policy shift, accompanied with legislative updates. 

Scope of Revision

The revision of the EU e-invoicing standard is divided into three parts: the revision of the semantic data model, the connection of the semantic part with the technical syntaxes, and how the Member States and different business sectors could extend it without compromising interoperability. 

The three layers(categories) of modifications are focused on:

• New core semantic data model for B2B transactions
• Syntax bindings for CII and UBL, with new rules on mandatory and optional fields
• Extension methodology (CIUS and extensions), including industry-specific

The semantic model is enriched to accommodate the complexities of B2B transactions. The 2026 revision clarified invoice semantics so that businesses operating in similar sectors could approach e-invoicing implementation in the same way.