- Poland’s National e-Invoicing System (KSeF) will become mandatory in 2026, with new regulations released in December 2025.
- From 14 February 2026, authentication will be via the National Electronic Identification Node, phasing out separate trusted electronic signature options.
- The new regulation clarifies user access rights, accepted authentication methods (introducing KSeF certificates), invoice verification rules (including mandatory QR codes), and rules for structured invoices with attachments.
- Most provisions take effect from February 2026, with some (like VAT RR invoices and new authentication methods) starting in April 2026.
- QR code requirements for invoices issued outside KSeF have been refined, with dual QR codes only needed in specific offline scenarios.
Source: marosavat.com
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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