EN 16931 Validator
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🇮🇪 Validate EN 16931 Invoices for Ireland
EN 16931PlannedPeppol
EN 16931 is planned in Ireland. Ireland announced a phased B2B e-invoicing mandate in October 2025.
Quick Facts
Format
EN 16931
Standard
EN 16931
Mandate
Planned
Peppol
Connected
What We Validate
EN 16931 semantic model compliance
Business rule validation (BR-xx rules)
VAT category rules (BR-S, BR-Z, BR-E, etc.)
Calculation rules (BR-CO-xx)
Code list validation
Party identification
Cross-border requirements
Common EN 16931 Errors
Ireland E-Invoicing Requirements
Phase
Status
Scope
B2G receiving
Live (Jun 2019)
Public sector must receive EN 16931 e-invoices
B2B Phase 1
Nov 2028
Large VAT-registered corporates (domestic B2B)
B2B Phase 2
Nov 2029
All VAT-registered businesses (cross-border EU B2B)
B2B Phase 3 (ViDA)
Jul 2030
Full ViDA compliance
Required CIUSEN 16931 (Peppol BIS 3.0 primary)
Routing identifierVAT registration number (via ROS)
PeppolYes — Office of Government Procurement is the Peppol Authority
Peppol-based, phased approach. Ireland is building entirely on Peppol infrastructure with no national portal. The Office of Government Procurement serves as the Peppol Authority. PDFs will no longer qualify as e-invoices under the mandate — your pipeline must produce EN 16931 structured data. The first phase targets large corporates in November 2028, giving a long runway for implementation.
FAQ
What is EN 16931?
EN 16931 is the European standard for electronic invoicing. It defines a semantic data model and business rules that all EU e-invoices must follow, regardless of syntax (UBL or CII).
Is EN 16931 mandatory?
For B2G invoices to EU public sector, yes. For B2B, it depends on the country. Under ViDA (VAT in the Digital Age), EN 16931 compliance will become essential across the EU.
What syntax should I use for EN 16931?
EN 16931 supports two syntaxes: UBL 2.1 and UN/CEFACT CII. UBL is more common for Peppol; CII is used in ZUGFeRD/Factur-X. Both express the same data.
What's a CIUS?
A CIUS (Core Invoice Usage Specification) is a national adaptation of EN 16931. Examples: XRechnung (Germany), Peppol BIS (international), CIUS-RO (Romania).
How do I prepare for ViDA?
Start by ensuring your invoices comply with EN 16931. Our validator checks all the business rules that will be required under the ViDA e-invoicing mandate.
Validators
XRechnung Validator
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ZUGFeRD Validator
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