- Until the end of 2026, invoices for sales registered on online cash registers can still be issued directly from the cash register, without the need to use KSeF.
- From January 1, 2027, invoices for business clients (B2B) must be issued exclusively via the KSeF system.
- Invoices for consumers (individuals not conducting business activity) do not have to be issued in KSeF; using KSeF for these invoices is optional.
- The main change affects only B2B transactions; for consumers, the current invoicing method remains unchanged.
Source: prawo.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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