Convert OIOUBL Denmark

Upload an OIOUBL invoice or credit note — the Danish e-invoice format, as exported by e-conomic, Dinero or the Danish edition of Dynamics NAV and Business Central, for example. It is detected automatically and converted into the format of your choice, such as Peppol BIS 3.0, XRechnung or ZUGFeRD. The reverse is not offered: from 2028 OIOUBL is being replaced by NemHandel BIS 4, which builds on Peppol.

    — or —

    JSON files in the Invoiceflair schema are also detected as a source and available as a target — for exchange with your own applications.

    Add the seller contact (for XRechnung)

    XRechnung requires the name, phone number and e-mail of a contact at the seller. What you enter here only fills gaps – details from the source file take precedence.

    SAP IDoc and EDIFACT as source or target are an Enterprise capability. You may use them here without restriction to build and test an integration; for productive operation we will prepare a quote for you.

    See Enterprise

    What is OIOUBL Denmark?

    OIOUBL is Denmark's national e-invoice format, a profile of UBL 2.0 published by the Danish Business Authority (Erhvervsstyrelsen). Since 2005 it has been mandatory for invoices to Danish public bodies via the NemHandel network. It predates the EU standard EN 16931 and departs from it in several places: tax categories are called StandardRated or ZeroRated, duties (afgifter) appear as taxes of their own next to VAT, and payments use Danish routes such as FIK or Giro. Invoiceflair reads OIOUBL 2.01, 2.02 and 2.1, maps these differences onto EN 16931 and states in the validation report what had to be decided along the way — a duty taken over as a charge, for instance. Together with the PDF from your own invoice printout, “Combine” turns it into a ZUGFeRD invoice. Detection uses the document's CustomizationID (OIOUBL-…).

    How to convert OIOUBL Denmark into an e-invoice

    1
    Upload file
    Choose a file or paste the content — the source format is detected automatically.
    2
    Choose target format
    XRechnung, ZUGFeRD, Peppol and further formats are available as targets.
    3
    Download result
    The converted invoice is validated and ready for download immediately.
    Change format

    Need this regularly?

    This tool handles one invoice at a time. Docuflair validates, archives, converts and sends e-invoices automatically — including inbound EN 16931 checks, bulk processing and Peppol.

    E-invoicing mandate 2027/2028: learn more
    Learn more about Docuflair