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Poland

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Mandatory KSeF 2026: Who’s Affected, How to Invoice During Outages? VAT Taxpayers’ Future

  • Electronic invoicing will become mandatory in Poland in 2026.
  • Companies must join the National e-Invoicing System (KSeF) by February or April 2026, depending on 2024 sales levels.
  • KSeF is a teleinformatics system for issuing, receiving, and archiving structured invoices.
  • The system aims to automate and speed up document flow and reduce tax fraud.
  • Implementation requires adjustments in accounting systems and inter-departmental collaboration.
  • All active VAT taxpayers must comply, with different requirements based on business size and systems used.
  • Large companies face complex technological projects, while small and medium enterprises face organizational challenges.
  • VAT-exempt taxpayers and those using special procedures are not required to use KSeF but can opt in voluntarily.
  • The Ministry of Finance clarified that VAT-exempt taxpayers will also need to issue invoices in KSeF starting in 2026 or 2027, depending on circumstances.

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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