- Poland’s Ministry of Finance shut down the KSeF 1.0 test environment on September 1, 2025, as part of transitioning to mandatory e-invoicing with KSeF 2.0. The KSeF 2.0 test environment will launch on September 30, 2025, with a full transition to KSeF 2.0 by February 1, 2026. Key dates include the availability of a pre-production environment on October 15, 2025, and the end of KSeF 1.0 production in late January 2026.
Source: snitechnology.net
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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