EN 16931 Validator
Validator

šŸ‡«šŸ‡® Validate EN 16931 Invoices for Finland

EN 16931B2G MandatoryPeppol

EN 16931 is required for B2G in Finland. Finland has mandatory B2G e-invoicing and a unique legal mechanism: companies with >€10K turnover can demand e-invoices from any supplier, who must comply.

Quick Facts
Format
EN 16931
Standard
EN 16931
Mandate
B2G Only
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

#1BR-CO-10Sum of VAT category amounts incorrectFix guide
#2BR-S-08Standard rate VAT amount missingFix guide
#3BR-E-01Exempt reason requiredFix guide
#4BR-CO-11Line amount calculation errorFix guide
#5BR-CO-13Invoice total mismatchFix guide

Finland E-Invoicing Requirements

Phase
Status
Scope
B2G
Live (Apr 2020)
All public authority suppliers
B2G sending
Live (Apr 2021)
All B2G suppliers must send EN 16931
Right to demand
Live (Apr 2020)
Companies >€10K turnover can demand e-invoices
Peppol Advanced Ordering
Live (Apr 2024)
Central government purchase orders
Validation engineDecentralized via operators (Telia, Basware, etc.)
Required CIUSFinvoice 3.0 / TEAPPSXML 3.0 (both EN 16931 compliant)
Routing identifierE-invoice address (registered in Verkkolaskuosoite directory)
PeppolYes — Peppol for cross-border and central government ordering

Finland's decentralized model means there's no single API to integrate with — you connect through operators.

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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