Information about the National e-Invoicing System (KSeF)

In connection with the mandatory implementation of the National e-Invoicing System (KSeF) in 2026, we would like to inform you about the following:

• From February 1, 2026, the obligation to issue and receive invoices via KSeF will apply to large taxpayers – those with sales exceeding PLN 200 million in 2024.
• From April 1, 2026, this obligation will be extended to other entrepreneurs – those with sales exceeding PLN 10,000 per month.

Most importantly for you as purchasers of goods and services, from February 1, 2026, your purchase invoices will appear in KSeF, and large companies such as fuel stations, telecommunications providers, Tauron, etc., will no longer be required to provide invoices in any other form.

Our office continuously monitors all legislative and technical changes related to KSeF. We are working intensively on implementing the best software solutions that will allow us to serve our clients smoothly and efficiently in the new system, ensuring full support during this transition period. We will provide further updates and detailed instructions once the National Revenue Administration approves the structures and opens the test platform.

We recommend reviewing the information available on government websites:
https://ksef.podatki.gov.pl/pliki-do-pobrania-ksef-20/

Online training sessions:
https://www.slaskie.kas.gov.pl/izba-administracji-skarbowej-w-katowicach/wiadomosci/srody-z-ksef

And in-person training sessions at the Cieszyn Tax Office:

Details are also available on the website of the Cieszyn Tax Office:
https://www.slaskie.kas.gov.pl/urzad-skarbowy-w-cieszynie/wiadomosci/srody-z-ksef