In the digital-first business environment of 2026, a company’s identity is its most valuable asset. While an electronic signature represents an individual, the Qualified Electronic Seal represents your entire organization. As a leading business consultancy and authorized Certum Partner, Lex Corporation provides expert guidance and seamless implementation of electronic seals for businesses in Warsaw and across Poland.
Whether you are automating thousands of invoices or preparing for the mandatory National e-Invoicing System (KSeF), the Certum Electronic Seal is your company’s digital “Master Key.”
What is a Qualified Electronic Seal?
A Qualified Electronic Seal is the digital equivalent of a traditional corporate stamp. Unlike an electronic signature, which is tied to a specific person (like a CEO or Manager), the seal is issued to a legal entity (e.g., a Sp. z o.o., S.A., or Foundation).
Key Differences: Signature vs. Seal
| Feature | Qualified Electronic Signature | Qualified Electronic Seal |
| Who uses it? | A specific natural person | An organization (legal entity) |
| Legal Basis | Declaration of will (Signing) | Authentication of origin (Stamping) |
| Identification | Personal Name & PESEL/Passport | Company Name & NIP/KRS |
| Primary Use | Contracts, HR documents | Invoices, Automated reports, KSeF |
Why Your Warsaw Business Needs an Electronic Seal
With the 2026 shift toward total digital transparency in Poland, the electronic seal has moved from a convenience to a strategic requirement.
1. Seamless KSeF Integration
Starting February 2026, KSeF is mandatory for all Polish taxpayers. Using a Certum Electronic Seal allows your company to:
- Authenticate without Personal Data: Log into the KSeF portal as an entity, avoiding the need to use a board member’s private signature.
- Automate Invoicing: Your ERP system can automatically seal and send thousands of invoices 24/7 without manual intervention.
- Manage Permissions: Grant and revoke access to employees directly within the system without visiting the tax office.
2. Legal Validity & eIDAS Compliance
The Certum seal is fully compliant with the EU eIDAS Regulation. Documents sealed with this tool carry a legal presumption of integrity (the document hasn’t been changed) and origin (it definitely came from your company). It is recognized by courts and administrative offices across the entire European Union.
3. Professionalism and Trust
When you send a digital offer or invoice sealed by Certum, it is automatically recognized as “Trusted” by software like Adobe Acrobat. This builds immediate credibility with international partners and clients.
Lex Corporation’s Electronic Seal Solutions
As your Warsaw-based Certum Partner, we offer two primary ways to implement your corporate seal:
Cloud-Based: SimplySign Seal
The most modern solution, perfect for remote teams and automated systems.
- No hardware needed: No cards or USB readers.
- API Ready: Easily integrates with your accounting or ERP software for mass-sealing.
- Accessible Anywhere: Use the mobile app or desktop cloud to authenticate documents.
Hardware-Based: Card and Reader
A traditional, robust security solution often preferred for centralized office environments.
- Physical Control: The seal is stored on a secure cryptographic card.
- Highest Security: Requires physical possession of the card and a PIN to execute.
How to Get Your Electronic Seal in Warsaw with Lex Corporation
We have simplified the complex certification process into a rapid, professional service.
- Selection: Our consultants analyze your business volume and KSeF readiness to recommend the best seal package (1, 2, or 3 years).
- Verification: We verify your company’s official documents (KRS/NIP) and the identity of the authorized representative at our Warsaw office or via an on-site visit.
- Issuance: With our “Express” service, we can often facilitate the issuance of your seal certificate in as little as 30 minutes.
- Support: Our technical team assists in configuring the seal with your existing IT infrastructure.
Frequently Asked Questions (FAQ)
Can a foreign company get a Polish electronic seal?
Yes. Lex Corporation specializes in assisting international firms. If your company is registered in the Polish National Court Register (KRS), we can issue a seal based on your company data, even if the board members are located abroad.
Do I need a PESEL to get a company seal?
The seal is issued to the company (NIP), not the person. While the person representing the company needs to verify their identity, the seal itself does not contain a PESEL, making it an ideal choice for management boards without Polish identification numbers.
Can multiple employees use the same seal?
Yes. Unlike a signature, which is personal and cannot be shared, a cloud-based seal (SimplySign) can be configured for authorized use by multiple departments, such as Accounting or HR, depending on your internal permissions.
Is the seal valid for EPREL or other EU databases?
Absolutely. The Certum qualified seal is accepted in the EPREL (European Product Registry for Energy Labelling) and other official EU portals that require entity-level authentication.
Secure Your Digital Identity Today
Don’t let bureaucracy slow down your expansion. Lex Corporation is your one-stop shop for digital trust in Poland. From legal advice to technical implementation, we ensure your business is compliant, secure, and ready for the future.