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What is KSeF?

Introduction to the Polish National e-Invoice System

What is KSeF?

Overview

KSeF (Krajowy System e-Faktur) is Poland's National e-Invoice System. It is a centralized platform managed by the Ministry of Finance for issuing, receiving, and storing structured electronic invoices.

Key Features

KSeF enables businesses to:

  • Issue invoices in a standardized XML format (FA(3))
  • Authenticate using qualified certificates or tokens
  • Track invoice transmission statuses in real-time
  • Maintain a legally compliant invoice archive

Related Articles

KSeF Statuses

Understanding invoice statuses in KSeF

KSeF Certificates

How to manage certificates for KSeF authentication

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