- Polish President signed an amendment for mandatory use of the National e-Invoicing System.
- Large taxpayers must comply by February 2026, others by April 2026.
- API specs for KSeF 2.0 and schema FA3 were released in June 2025.
- Updates include QR codes, offline modes, and attachments.
- Test environment and authorization module access are expected by late 2025.
Source: tungstenautomation.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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