- The e-Invoicing Act KSeF 2.0 was published in the Journal of Laws on September 1, 2025.
- Mandatory use of KSeF begins February 1, 2026, for large taxpayers with sales over PLN 200 million in 2024.
- Other entrepreneurs and local government units must comply by April 1, 2026.
- Small businesses with monthly sales under PLN 10,000 must comply by January 1, 2027.
- All entrepreneurs must be able to receive invoices in KSeF by February 1, 2026.
- Implementation requires changes in IT systems, business processes, internal procedures, and contracts.
- Early preparation is recommended due to the complexity and time required for implementation.
Source: mddp.pl
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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