Our Services — Electronic Signature, Seal & KSeF Solutions
Complete range of qualified trust services: electronic signatures, electronic seals, e-Delivery, and KSeF integration support.
Qualified Electronic Signature (QES)
A Qualified Electronic Signature identifies a natural person and has the same legal effect as a handwritten signature. Use it for tax filings, HR contracts, official agreements, and e-Delivery.
- Full legal validity across all EU member states
- Mobile signing via SimplySign app or cryptographic card
- Remote video identity verification with IDnow
- Compatible with e-Delivery (e-Doręczenia) system
- Valid for tax declarations, contracts, and official documents
Qualified Electronic Seal (QSeal)
A Qualified Electronic Seal identifies a legal entity (company) and guarantees document integrity and authenticity. Required for KSeF e-invoicing system authentication.
- Required for KSeF (National e-Invoice System) since February 2026
- Cloud-based seal via SimplySign — no hardware needed
- Linked to company NIP number for KSeF authentication
- Full legal validity under EU eIDAS Regulation
- Also used for EPREL product registration
- Available for foreign companies with Polish NIP
KSeF Integration Support
From February 2026, all companies in Poland must use the National e-Invoice System (KSeF). We help you prepare with the right electronic seal and integration guidance.
- Full KSeF readiness assessment
- Electronic seal issuance for KSeF authentication
- Integration guidance for accounting systems
- Support for foreign companies operating in Poland
- Training and onboarding assistance
e-Delivery (e-Doręczenia)
The official electronic delivery system for sending legally binding registered letters online. Requires a Qualified Electronic Signature with PESEL for activation.
- Legal equivalent of registered mail
- Activated with Qualified Electronic Signature
- Secure and encrypted communication channel
- Mandatory for public entities and businesses
Ready to Get Started?
Contact us today and our team will help you choose the right solution for your business.