Qualified Trust Services

Electronic Signature & Seal for Your Business

Qualified electronic signatures and seals compliant with EU eIDAS regulations. KSeF-ready solutions with remote video verification. Trusted by 5,000+ customers.

eIDAS eIDAS
KSeF KSeF Ready
EU-wide Valid
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Trusted by 5 000+ customers worldwide
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Certyfikat
Marzec 2026
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Dostępny Zajęty
Nadchodzące
Weryfikacja QES
Wt 17 mar · 10:00
QES
Podpis Kwalifikowany
Śr 18 mar · 14:30
KSeF
e-Doręczenia setup
Pt 20 mar · 11:00
eDor
+ Nowy termin
Why Choose Us

Trusted by Businesses Across Europe

Fully compliant with EU eIDAS regulations — the highest level of assurance for your electronic signatures and seals.

Global Reach

Works worldwide regardless of location. EU-wide legal validity under eIDAS.

Mobile Ready

Sign documents on the go with SimplySign mobile app. Cloud-based seals — no hardware needed.

Full Legal Validity

Qualified Trust Service Provider under eIDAS. Full evidentiary value and legal effectiveness across all EU member states.

Remote Verification

Verify your identity via video call with IDnow. No need to travel to Poland.

Electronic Signature

Qualified Electronic Signature (QES)

Convenient and secure electronic document signing. Legally effective for tax filings, HR contracts, and official agreements.

  • Full legal validity across EU
  • Mobile signing via SimplySign
  • Remote video verification
Learn More
Electronic Signature
Electronic Seal

Qualified Electronic Seal for KSeF

Essential for the mandatory National e-Invoice System (KSeF) starting February 2026. Cloud-based, no hardware needed.

  • KSeF ready — mandatory from Feb 2026
  • Cloud-based via SimplySign
  • Available for foreign companies
Learn More
Electronic Seal for KSeF
e-Delivery

Qualified e-Delivery (e-Doręczenia)

Mandatory electronic delivery system replacing registered mail in Poland. Legally equivalent to a registered letter with acknowledgment of receipt — fully digital.

  • Mandatory for businesses from 2025
  • Legally equivalent to registered mail
  • eIDAS compliant — valid across EU
Learn More
e-Delivery electronic postal service
Live Verification Active

Verify your identity online —
fast & secure

Face-to-face video verification with expert assistance.
No travel to Poland required.

✅

Identity Verified

eIDAS compliant
🔐

Encrypted Session

TLS 1.3 secured
⏱

~10 min

passport required
🧑
Scanning…

Certum has implemented a fully digital solution for identity verification required to activate Qualified Electronic Signatures (QES) and Qualified Electronic Seals (QSeal), developed in collaboration with IDnow. All you need is a mobile device, stable internet, and a valid passport.

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Book your video session

Choose a convenient time. Available on weekdays.

2

Connect via mobile app

Join via IDnow — no special hardware needed.

3

Show your passport

Present a valid passport to the verification expert.

4

Receive your certificate

Your QES or QSeal is activated and ready to use.

Mobile device
Valid passport
Stable internet
~10 min
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eIDAS compliant
End-to-end encrypted
GDPR compliant
5000+ clients
KSeF 2026

KSeF Becomes Mandatory from February 2026

Companies will be required to issue e-invoices via the National e-Invoicing System. Get your Qualified Electronic Seal now to be ready.

Prepare for KSeF Learn About KSeF
FAQ

Frequently Asked Questions

The obligation to use the National e-Invoicing System (KSeF) applies to all active VAT taxpayers, taxpayers exempt from VAT domestically, taxpayers with a NIP identifier using the OSS procedure, and micro-entrepreneurs — depending on the implementation stage.
A Qualified Electronic Signature identifies a natural person, while a Qualified Electronic Seal identifies a legal entity (company). The signature is used for personal documents and contracts, while the seal is used for corporate document authentication and KSeF.
Yes. Foreign users can obtain a Qualified Electronic Seal for use in the Polish KSeF system via remote video verification, provided they present a valid passport. The QSeal will be linked to the company's Polish VAT (NIP) number.
Yes. A foreign citizen can obtain a Qualified Electronic Signature remotely through video verification using a valid passport. The certificate can be issued in a mobile application (SimplySign) or on a cryptographic card. It is fully compliant with the EU eIDAS Regulation.
EPREL (European Product Registry for Energy Labelling) is the official EU database for registering energy-labelled products. To access EPREL, a company needs a QSeal linked to its KRS number to verify the organization profile.
A document signed with a Qualified Electronic Seal has the same legal effect as one bearing a traditional company seal. Under the EU eIDAS Regulation, such a document is recognised as authentic and legally binding, providing full evidentiary value and guaranteeing document integrity.
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Why Trust Us

eIDAS
eIDAS Certified EU Regulation 910/2014
Legal Across EU 27 member states
5,000+ Customers Trusted across Europe
eIDAS
Authorized Certum Partner

Official distribution partner of Certum (Asseco) — EU Qualified Trust Service Provider.