Poland: New Guides and Materials for KSeF 2.0 Released

The Polish Ministry of Finance has published updated documentation and user guides for the upcoming Krajowy System e-Faktur (KSeF) 2.0. These resources are designed to support taxpayers, software providers, and integrators as they prepare for the mandatory e-invoicing framework.

Key Highlights

• Technical Documentation & Sample Files: Updated XML schemas, QR code rules, and structures for attachments are now available for download.
• User Guides: Step-by-step instructions covering portal usage, authentication methods, API integration, and offline mode have been released.
• FAQ Section: The most frequently asked questions about KSeF 2.0 are addressed, providing both technical and operational clarifications.
• Training Program – “Środy z KSeF” (Wednesdays with KSeF): Weekly online and in-person sessions explain how to work with the new system in practice.
• Timeline & Mandatory Use: Large enterprises will be required to use KSeF 2.0 starting February 1, 2026, with smaller businesses phased in gradually.

Why It Matters

KSeF 2.0 represents a major step in modernizing Poland’s e-invoicing landscape, offering greater security, efficiency, and standardization. Businesses are strongly encouraged to begin testing the system, adapting their integrations, and training their teams ahead of the mandatory rollout.

Official KSeF portal: guides and technical materials

Krajowy System e-Faktur (KSeF)