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What is a qualified electronic signature?

Short definition

The qualified electronic signature is the highest level of electronic signature. In the EU it is equivalent to a handwritten signature under the eIDAS Regulation; in Switzerland under the Code of Obligations and the Federal Act on Electronic Signatures (ZertES).

Electronic signatures come in three levels: simple, such as a scanned signature or a click; advanced, uniquely linked to a person and protected against alteration; and qualified, which additionally relies on a qualified certificate from a recognised provider and is created with a secure signature creation device.

Under the eIDAS Regulation, a qualified electronic signature has the same legal effect as a handwritten signature. The revised Regulation (EU) 2024/1183 adds European digital identity wallets, with which citizens are also expected to be able to sign at the qualified level.

In Switzerland, a qualified electronic signature with a qualified time stamp is equivalent to a handwritten signature under Art. 14(2bis) of the Code of Obligations. Providers are recognised under ZertES. There is no automatic mutual recognition between Switzerland and the EU; many signature services therefore offer both variants.

Which level when

For most business contracts a simple or advanced signature is enough, because no written form is required. Where the law requires written form, the qualified signature is needed. In apps and customer portals we integrate specialised providers for this.

Sources and references
  • Regulation (EU) No 910/2014 (eIDAS), as amended by Regulation (EU) 2024/1183
  • Federal Act on Electronic Signatures (ZertES), SR 943.03
  • Art. 14(2bis) Swiss Code of Obligations

Legal position as of October 2026. Not legal advice for an individual case.

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