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What is KSeF? Mandatory National e-Invoice System from 01.07.2024

  • KSeF is the Krajowy System e-Faktur, a national electronic invoicing system in Poland.
  • It was introduced on January 1, 2022, and will become mandatory for large entities from July 1, 2024, and for small and medium-sized entities exempt from VAT from January 1, 2025.
  • KSeF allows for the electronic issuance, transmission, receipt, storage, and sharing of invoices.
  • Invoices issued through KSeF are structured and use formats like XML.
  • The system aims to streamline and automate the invoicing process, replacing traditional paper invoices with secure and efficient electronic solutions.
  • The obligation to use KSeF applies to all entities registered as VAT taxpayers in Poland, including businesses and public administration bodies.
  • The system has specific rules for issuing, transmitting, receiving, and storing invoices.
  • Benefits of KSeF include faster VAT refunds, simplified confirmation of reduced taxable base, accelerated document processing, and elimination of the risk of document loss or damage.
  • However, KSeF does not allow for pre-issuance corrections and restricts the use of simplifications in invoicing and VAT settlement.
  • In case of system failures, the Ministry of Finance assures that any disruptions will be incidental and short-lived, and taxpayers can wait for the system to be restored or issue invoices outside of KSeF.


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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