Qualified electronic signatures in Poland

Updated: 1 October 2026Reading time: approximately 7 minutes

For foreign directors, a qualified electronic signature is often the most practical way to sign Polish documents remotely with full legal effect. Across the European Union it explicitly has the same legal effect as a handwritten signature.

What is a qualified electronic signature?

It is an electronic signature based on a qualified certificate and created using a qualified signature creation device. Under the European eIDAS framework it has the same legal effect as a handwritten signature.

Important for Belgian and Dutch directors: a qualified certificate from a recognised provider in another EU Member State must be legally recognised in Poland. Technical compatibility with a particular Polish portal or required file format should still be checked in advance.

What can you do with it in Poland?

sign commercial, employment, lease and other civil-law agreements remotely;
sign electronic financial statements and prepare documents for KRS;
sign tax returns, JPK files and other electronic reports;
use Płatnik and selected ZUS services;
participate in electronic procurement procedures and secure platforms;
authenticate in KSeF using a qualified certificate;
sign PDF/PAdES or XML/XAdES documents, depending on the system.

Why is it particularly useful for foreign directors?

A director may live in Belgium or the Netherlands while the Polish company must sign documents within short statutory or contractual deadlines. A qualified signature avoids travel and courier circulation and supports a fully digital approval process.

Does it replace a PESEL number?

Not completely. The tools serve different purposes. PESEL identifies you in Polish registers and is required for Profil Zaufany. A qualified signature is a cross-border signing tool. Some systems allow use of the certificate without PESEL, while other procedures still require a PESEL disclosed in KRS or a specific authorisation.

KSeF: check what the certificate contains

KSeF supports authentication with a qualified signature or seal. If the certificate contains neither NIP nor PESEL, the company must be able to assign permissions to the certificate fingerprint. This should be organised before the first production login.

What should you check before purchasing?

Choose a qualified provider listed on an EU Trusted List.
Ensure the name and personal details match the passport and KRS.
Confirm support for PAdES and XAdES formats.
Decide between a physical card/token and a mobile remote signature.
Never share the PIN, token or second authentication factor with an accountant, employee or adviser.

How can OKW Accounting help?

We can identify the Polish procedures for which the signature is needed, verify formats and authorisations, and coordinate its use with KRS, KSeF, financial reporting and tax compliance.

Official sources

This information is general and does not replace advice based on your specific role, company and legal or tax circumstances.

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