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Micro-entrepreneurs with monthly sales up to PLN 10,000 (gross, roughly EUR 2,350) must join KSeF from 1 January 2027, and from the same date the tax authority can impose penalties on any taxpayer for invoices issued outside KSeF or with errors.
The smallest Polish sole traders and micro companies; all Polish businesses regarding penalties.
Lielumi: mikro · Nozares: Visas nozares · Attiecas, ja: Mēs izrakstām rēķinus citiem uzņēmumiem (B2B)
Micro-firms: choose a free or low-cost KSeF-compatible invoicing app (the Ministry's own e-mikrofirma tool works) and obtain authentication before January 2027. Everyone else: audit your 2026 KSeF invoices for errors before penalties apply.
Fines for issuing invoices outside KSeF from 2027
Pēdējoreiz pārbaudīts 2026. gada 8. septembris. Tikai informatīvos nolūkos, nav juridiska konsultācija.
Large taxpayers (2024 sales above PLN 200M) started issuing invoices via KSeF on 2026-02-01; from that same date, receiving invoices through KSeF also became mandatory for all registered VAT taxpayers regardless of size. Penalties for KSeF errors are suspended until 2027-01-01.
Every VAT-registered business in Poland, including foreign companies with a Polish fixed establishment.