- Poland is launching KSeF 2.0, a new e-invoicing platform, with a test environment available in September 2025
- The official launch for businesses is on February 1, 2026, with smaller companies joining on April 1, 2026
- KSeF 1.0 test environment was deactivated on September 1, 2025
- Open testing of KSeF 2.0 API starts on September 30, 2025
- Integration with the pre-production environment begins on October 15, 2025
- Scheduled maintenance for the current system is from January 26 to 31, 2026
- KSeF 2.0 enhances data exchange and integration with third-party systems
- Full API documentation is available for developers and integrators
- Polish president signed the e-invoicing legislation on August 27, 2025
- The legislation amends the VAT Act and will be published in the official SEJM
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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