Qualified Electronic Signature
PL: Kwalifikowany podpis elektroniczny (QES)
Highest-trust e-signature, equivalent to handwritten signature across EU. eIDAS Art. 25.
Glossary
Glossary — electronic signatures, KSeF, eIDAS
Key terms around qualified trust services — electronic signatures, seals, KSeF and e-Delivery.
Qualified Electronic Seal
PL: Kwalifikowana pieczęć elektroniczna (QSeal)
Corporate seal for automated document signing (KSeF invoices, ePREL). Issued to company, not person.
Polish National e-Invoicing System
PL: KSeF (Krajowy System e-Faktur)
Central platform for structured invoice exchange. Mandatory from Feb 1, 2026.
eIDAS Regulation
PL: eIDAS
Regulation 910/2014 establishing legal framework for EU trust services. Defines QES, QSeal, eDelivery.
Polish e-Delivery
PL: e-Doręczenia (eDelivery)
Registered electronic delivery address for correspondence with public administration. Mandatory since Jan 1, 2026.
Need a qualified signature or seal? Contact us