Denmark will implement the OIOUBL 3 Invoice Package for e-invoicing, introducing enhanced compliance, interoperability, and alignment with European standards starting November 15, 2025. Key updates include clearer business and message-level responses, mandatory two-way profiles, and field adjustments to support structured data like environmental metrics. A phased migration plan ensures a smooth transition, with the old OIOUBL 2.1 format phased out by May 15, 2026.
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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