Although KSeF 2.0 is primarily a B2B system, it introduces major changes for B2C retailers by requiring all VAT taxpayers to receive invoices via KSeF from February 2026 and progressively mandating invoice issuance through KSeF for retailers from April 2026. From 1 January 2027, cash register receipts with a buyer’s NIP will be prohibited, making KSeF the mandatory channel for such consumer invoicing requests and marking a hard deadline for retail compliance.
KseF 2.0: Important Deadlines for Polish Retailers
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Poland
Author: Tara Nedeljković
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Fiscal subject related
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2847
Content accuracy validation date:
13.01.2026
Content accuracy validation time:
08:21h
The National e-Invoicing System (KSeF 2.0) primarily targets B2B invoicing, but it also introduces several important changes that directly affect B2C transactions, i.e. retailers, and the use of cash registers in this country.
From February 2026, all VAT taxpayers will be required to receive invoices via KSeF, even if their activity is focused on retail or consumer sales. The obligation to issue invoices through KSeF will apply to large taxpayers first, starting on February 1st 2026 if their gross sales exceeded PLN 200 million in 2024, and it will extend to all other VAT-registered businesses, including retailers, from 1 April 2026.
For retailers operating cash registers, a key deadline is January 1st, 2027, when cash register receipts that include a buyer’s NIP will no longer be allowed and such transactions will have to be handled through KSeF instead. This marks a significant shift for B2C scenarios where consumers request an invoice with their tax identification number. Until the end of December 2026, there is a limited relief allowing invoices to be issued outside KSeF if the monthly value of such invoices does not exceed PLN 10,000 gross, but once this threshold is exceeded, KSeF becomes mandatory from that invoice onward.
Certain typical B2C documents remain outside the mandatory KSeF scope, including passenger transport tickets (rail, road, air, or sea) and toll motorway services, which are issued as simplified documents with limited data. These exemptions are particularly relevant for retailers and service providers selling tickets or access services directly to consumers. Retailers should also note that the Ministry of Finance has clearly stated that the KSeF deadlines will not be postponed, emphasizing the need for timely preparation.
From a practical perspective, while KSeF 2.0 focuses on structured electronic invoices, it fundamentally changes how retail businesses must handle invoicing type of transactions and invoicing requests from consumers, especially those linked to cash register sales. Overall, retailers in Poland should treat 2026 as the final preparation year and January 1, 2027 as the hard stop for traditional NIP receipts from cash registers.
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