Is electronic signature legal in Switzerland?
Yes. Most Swiss contracts need no particular form, so any electronic signature can be valid. Where the law requires written form, only a qualified electronic signature combined with a qualified time stamp under the Swiss ZertES counts as a handwritten signature.
Last reviewed October 2026. General information, not legal advice.
E-signature law in Switzerland at a glance
- Status
- Legal
- Main laws
Federal Act on Electronic Signatures (ZertES), SR 943.03 (2016)
- Approach
- Tiered: simple, advanced and qualified
Types of electronic signature in Switzerland
Simple electronic signature
Any electronic form of signing. Valid for the many contracts that Swiss law leaves free of form, with its weight as evidence assessed by the court.
Advanced and regulated electronic signature
Defined in ZertES. A regulated signature is an advanced signature based on a regulated certificate from a recognised provider. ZertES also provides regulated electronic seals for entities such as companies. These signatures do not by themselves meet written form.
Qualified electronic signature
Combined with a qualified time stamp, it is treated as equivalent to a handwritten signature under Art. 14 para. 2bis of the Code of Obligations. It must come from a provider recognised under Swiss law.
What you can sign electronically in Switzerland
- Most commercial contracts (no form requirement)
- Most employment contracts, which have no general form requirement
- Contracts that require written form, such as non-compete clauses or assignment of claims, if signed with a Swiss qualified signature and time stamp
- Consumer contracts
Documents that need a handwritten signature or extra formalities
- Contracts that require a public deed before a notary, such as real estate sales
- Handwritten (holographic) wills, which must be written by hand by the testator
- Any contract where the law or the parties provide that the electronic equivalence in Art. 14 para. 2bis does not apply
Contracts that must be “in writing”
Art. 14 para. 2bis of the Code of Obligations treats a qualified electronic signature combined with a qualified time stamp under ZertES as equivalent to a handwritten signature, unless the law or the contract provides otherwise.
E-signatures in Switzerland: frequently asked questions
Are e-signed employment contracts valid in Switzerland?
Yes. Swiss employment contracts generally need no written form. Clauses that do need writing, such as a non-compete, must be signed by hand or with a Swiss qualified signature and time stamp.
Is an EU qualified signature valid in Switzerland?
Switzerland is not in the EU, so an EU qualified signature is not automatically treated as a Swiss qualified signature under ZertES. For contracts needing written form, use a provider recognised in Switzerland.
Can real estate be bought by e-signature in Switzerland?
No. Real estate sales require a public deed executed by a notary, so a private electronic signature is not enough.
Sources
This page is general information about e-signature law in Switzerland, not legal advice. It was last reviewed in October 2026, and laws change. Check the official sources above or ask a lawyer in Switzerland before you rely on an electronic signature for an important document. See also whether electronic signatures are legal.
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