EN 16931 Validator
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🇭🇺 Validate EN 16931 Invoices for Hungary
EN 16931B2G MandatoryPeppol
EN 16931 is required for B2G in Hungary. Hungary uses a Real-Time Invoice Reporting (RTIR) model where all invoice data must be reported to NAV before delivery to the customer.
Quick Facts
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
Hungary E-Invoicing Requirements
Phase
Status
Scope
RTIR (all invoices)
Live (Jul 2020)
All VAT-registered businesses — every invoice reported
NAV XML 3.0
Live (May 2025)
Version 3.0 mandatory (2.0 discontinued)
B2B e-invoicing (energy)
Live (Jul 2025)
Electricity and gas sectors
B2B e-invoicing (water)
Jan 2026
Water utilities
Full B2B mandate
2027+
Expected under ViDA
Validation engineNAV Online Számla (real-time API validation)
Required CIUSNAV XML 3.0 (for reporting); flexible formats for actual invoices
Government portalOnline Számla (onlineszamla.nav.gov.hu)
Routing identifierAdószám (tax number)
PeppolYes — consulting on Peppol for future B2B mandate
RTIR is not e-invoicing. The critical distinction: Hungary mandates real-time reporting of invoice data to NAV, not the exchange of structured e-invoices between parties. Your pipeline must report via the Online Számla API before delivering the invoice to the customer. The actual invoice can still be PDF. NAV XML 3.0 is mandatory from May 2025 — version 2.0 is discontinued.
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.
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