- The text is a comprehensive guide on the National e-Invoice System (KSeF).
- It explains how to correctly issue e-invoices from 2026.
- The guide considers the legal status introduced by the law of June 16, 2023, and modifications from the April 11, 2025 project.
- KSeF was initially set to be mandatory from July 1, 2024, but the implementation was postponed to 2026.
- Legal changes were announced in January 2024, with consultations and project proposals following in the subsequent months.
- The guide will be updated as new regulations are finalized.
- Legal acts related to KSeF are found in the VAT Act and the Minister of Finance’s regulation on using KSeF.
- The regulation was modified from September 1, 2023, and will be replaced with a new one before 2026.
- KSeF has been operational since January 1, 2022, allowing the issuance of structured invoices.
Source: zrozumvat.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.
