E-Invoice Mandate in Poland

Poland is moving toward mandatory B2B e-invoicing beginning in early 2026. With centralised, real-time clearance via KSeF (Krajowy System e-Faktur / National E-Invoice System), every invoice will be pre-cleared by the Ministry of Finance under Poland’s Continuous Transaction Controls (CTC) framework. This mechanism — which locks and time-stamps invoice data upon submission — signals even tighter integration between businesses and the tax authorities.

In this whitepaper, you will find information about the upcoming timeline in Poland and the current requirements for B2G (Business to Government) e-invoicing. You will also get details on both current and upcoming requirements for B2B (Business to Business).

So if you do business in Poland, this whitepaper gives you insights into the current and future state of e-invoicing in the country.