What are the types of electronic signatures?

Autenti E-signature

This is the simplest and fastest way to sign a document online. It corresponds to the documentary form under Polish civil law (Art. 77² of the Civil Code).

• Suitable for: Over 90% of everyday commercial documents (e.g., B2B contracts, acceptance protocols, declarations).
• How it works: Verification is performed via access to an email address or an SMS code.

Advanced Electronic Signature (AES)

An advanced signature offers a higher level of security, designed for entering into remote agreements with clear identity confirmation of the signatory.

• Suitable for:
  
  • Cooperation agreements
  • Contracts for the sale of movable property
  • Many other agreements that do not legally require a written form under pain of nullity
• How it works: Signed using verification data that the signatory can, with a high degree of confidence, keep under their sole control.

Qualified Electronic Signature (QES)

The most advanced type of signature. Under the law, it carries the exact same legal weight as a handwritten signature (written form).

• Suitable for: Documents that strictly require written form under pain of nullity, such as:
  • Employment contracts and termination notices
  • Contracts for specific work with copyright assignment
  • Non-compete agreements
  • Commercial or residential lease agreements
  • Settlement agreements
  • Agency agreements
• How it works: Requires a qualified certificate. The identity verification method depends on the chosen signature provider and can be completed entirely online (e.g., via electronic banking, video verification, or supported identity apps).

How to Choose the Right Signature?

Check our [Document Catalog] to find out exactly which signature type is required to legally sign your specific document or contract.