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KSeF 2026: What Errors Go Unnoticed in Structured Invoices? Examples, Penalties, and Sanctions

  • From 2026, most taxpayers in Poland must issue and receive structured invoices via the KSeF system.
  • KSeF automates invoice processing but does not verify the substantive accuracy of invoices (e.g., dates, amounts, NIP).
  • Errors in invoices can result in loss of VAT deduction rights and, in severe cases, criminal liability.
  • The Ministry of Finance confirms KSeF 2.0 is ready and provides technical and user support.
  • KSeF functions mainly as a hub for transmitting and archiving invoices, not for checking their correctness.

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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