KSeF Certificates

Overview

Connecting to KSeF (Krajowy System e-Faktur, Poland's National e-Invoice System) requires authentication. Biurko supports several authentication methods and stores your credentials securely.

Authentication methods

• Authorization token — generated in the KSeF portal and tied to your company's NIP (Polish tax ID).
• Profil Zaufany (Trusted Profile) — Poland's trusted identity for logging in through government e-services.
• Qualified certificate — for organizations that authenticate using a qualified electronic signature.

Managing credentials in Biurko

• Credentials are stored encrypted and are used only to sign requests sent to KSeF on your behalf.
• You can update or revoke your token at any time from the connection settings.
• Biurko monitors certificate expiry and warns you in advance, so you can renew or replace credentials before access is interrupted.