News

  • October 2025: Publication of OIOUBL 3.0, a structured XML format based on UBL 2.1 and the European standard EN 16931.
  • May 2026: OIOUBL 3.0 becomes mandatory on NemHandel
  • November 2026: OUOUBL 2.1 is finally replaced

Format:

OIOUBL 3.0

Transmission channels

PEPPOL
Electronic invoices are sent to public clients via the PEPPOL network.
Denmark fully supports PEPPOL and uses certified PEPPOL access points for invoice exchange.

NemHandel (national infrastructure)
The Danish infrastructure for electronic invoices in the B2G area.
From March 2025, NemHandel will only support the OIOUBL 3 format.
Companies can send invoices via certified service providers or ERP systems with a NemHandel connection.

Secure delivery (digital post / eDelivery)
In individual cases, exchange via digital post systems is also possible. However, PEPPOL remains the preferred solution.