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Denmark to Adopt Peppol BIS 4 as Sole E-Invoice Standard, Phasing Out OIOUBL by 2029

  • Denmark is holding a public consultation (March 12–27, 2026) on a new national strategy to unify e-invoicing standards.
  • The plan is to phase out the national OIOUBL format and adopt a Danish-adapted version of Peppol BIS 4 (Nemhandel BIS 4) as the single standard.
  • The transition aims to reduce complexity and costs for businesses, with strong stakeholder support for a single Peppol-based format.
  • The migration will occur from 2026 to mid-2029, with both formats coexisting temporarily before OIOUBL is fully phased out.
  • The reform initially covers invoice-related documents (invoices, credit notes, invoice responses), with Peppol-based Nemhandel BIS 4 becoming mandatory.

Source: fiscal-requirements.com

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.



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