Format
KSeF structured invoice (Poland)
Invoices issued in Poland's National e-Invoicing System (Krajowy System e-Faktur), the Ministry of Finance platform for issuing, transmitting, receiving and storing invoices.
Key points
- Mandatory from 1 Feb 2026 for businesses with 2024 sales above PLN 200 million and from 1 Apr 2026 for the rest.
- B2G suppliers may continue to use the Peppol-based PEF platform.
- KSeF is free to use; the Ministry offers a taxpayer application and a mobile app.
Countries using it
Countries whose official sources name this format (or a format based on it), in our data.
Sources
Last verified . Always check the official source before acting.