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E-Invoice Validator

Denmark

When does the obligation apply?

Country informationE-invoicing requirement: dates and status
ScopeFromStatus
Public clientsFeb 2005in forcegovernment agencies, NemHandel/OIOUBL
Companies (B2B)—no obligation

Public clients

Mandatory via NemHandel/OIOUBL for government agencies since 2005.

Companies (B2B)

No general mandate; OIOUBL and Peppol are common.

Formats and rules

FormatsOIOUBL · Peppol BIS Billing 3.0 (UBL)
CIUSPeppol BIS Billing 3.0
Routing identifierCVR number, EAN/GLN (schemeID 0088)
Responsible bodyErhvervsstyrelsen

What this validator checks for Denmark

OIOUBL is a national syntax outside of EN 16931 and is not validated.

Sources

Status: 12.10.2026

Common questions about the e-invoicing requirement

When does the e-invoicing requirement apply in Denmark?
The table above gives the dates for Denmark: when receiving and when issuing become mandatory, for public bodies and for companies separately.
Does the requirement apply to small businesses too?
Usually yes. The obligation follows from trading between businesses, not from the size of the business. Smaller companies are often covered later, where a transition period applies — the dates above show where Denmark stands.
Which formats are allowed in Denmark?
The formats that satisfy EN 16931. Which ones apply in Denmark, and which CIUS, is listed under formats and rules.
Can I check my invoice for Denmark for free?
Yes. The validator checks free of charge and without sign-up against the rule sets that apply to Denmark.

Check invoice for Denmark

Free, without registration. The set of rules is selected from the specification identifier of the invoice.

  • Hosted in the EU
  • GDPR compliant
  • No storage
  • No use of AI
  • No cookies, no tracking
  • Official EN 16931 regulations
  • Always current official regulations

Official rule sets up to date: EN 16931 1.3.17 · Peppol BIS 3.0.20 · XRechnung 3.0.2 (KoSIT 2.6.0). Last checked against the sources on 12.10.2026.