EN 16931 Validator
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🇧🇬 Validate EN 16931 Invoices for Bulgaria
EN 16931B2G Mandatory
EN 16931 is required for B2G in Bulgaria. Bulgaria requires public sector entities to receive EN-compliant e-invoices but does not mandate supplier issuance.
Quick Facts
Format
EN 16931
Standard
EN 16931
Mandate
B2G Only
Peppol
Not 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
Bulgaria E-Invoicing Requirements
Phase
Status
Scope
B2G receiving
Live (Nov 2019)
Public sector must receive EN 16931 e-invoices
SAF-T (large)
Live (Jan 2026)
Large enterprises (>BGN 300M turnover or >BGN 3.5M taxes)
SAF-T (all VAT)
Jan 2030
All VAT-registered including micro-enterprises
Required CIUSEN 16931 (UBL 2.1 or UN/CEFACT CII)
PeppolNo — not connected to Peppol
SAF-T is the main compliance requirement. Bulgaria's e-invoicing landscape is minimal, but SAF-T reporting is the real integration challenge. Monthly submissions (General Ledger, AP/AR, invoices) are due by the 14th of the following month. Submissions require a qualified electronic signature (QES). The NRA provides a 6-month grace period for each phase rollout. No unified B2G platform exists — there is no mandate for suppliers to issue e-invoices.
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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