Implementation of KSeF 2.0: Permissions, Authentication, Invoicing, Technical Requirements from February 2026

• From February 2026, Polish VAT taxpayers will experience a major change in invoicing, which will be mandatory through the National e-Invoice System (KSeF).
• A key legal act for mandatory KSeF is the regulation by the Minister of Finance and Economy, currently undergoing public consultations and inter-ministerial agreements.
• The new regulation is needed to implement the authorization in the amended law on goods and services tax, which mandates universal invoicing through KSeF.
• The regulation will address issues such as user permissions, authentication methods, and invoice marking within KSeF.
• The implementation of mandatory KSeF has been postponed to February 2026, with ongoing legislative work to finalize the changes.

Source: ksiegowosc.infor.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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