Signature certification, also called authentication or legalisation of a signature, confirms that a signature belongs to the identified person. It does not validate the contents of the document. For Swiss company formation or amendments, the key is to use the correct authority and bring the required identity document and paperwork.
The right contact depends on the document, recipient and canton. To avoid a wasted trip, explain at the outset whether, for example, the signature is intended for the Swiss commercial register.
Key points
- Certification confirms the authenticity of a signature, not the contents of a contract.
- For commercial register documents, the usual routes are the competent register office or a notary. Other authorities may be authorised in particular cantons.
- Bring valid identification and the complete document, preferably unsigned.
- An owner without authority to represent the company is not necessarily a person whose signature must be deposited with the register.
- For documents signed or used abroad, check whether an apostille, additional legalisation or translation is required.
What does a certified signature prove?
The authority or notary confirms that the signature belongs to the identified person. This reduces the risk of someone signing in your place.
It does not guarantee that a contract is balanced, its information is correct or the transaction is tax-efficient. If you do not understand a clause, have it explained before signing. A certification stamp does not replace that work.
| Procedure | What it primarily confirms |
|---|---|
| Signature certification | Authenticity of the signature |
| Certified true copy | That the copy matches the original presented |
| Public deed | An instrument executed in the legally required form before a public official |
| Apostille | Authenticity of an official signature or seal for uses covered by the applicable convention |
Who needs to provide a signature when forming a company?
For a Swiss LLC or company limited by shares, SA/AG, the file includes signatures of people authorised to represent the company, according to register requirements. Article 21 of the Commercial Register Ordinance — French governs depositing a signature when an authorised representative is registered. This can therefore also be necessary after incorporation.
Authority may be individual or joint. Someone who must sign with another representative still needs to be identified. Owning an interest in the company does not automatically confer signing authority. Our Swiss signing authority guide explains the distinction.
A sole proprietor may also need certification when registering. It is not restricted to incorporated companies.
Is an electronic route available?
Yes. Article 21 provides two electronic routes for depositing a scanned handwritten signature: electronic certification by a public official, or certification by the signature holder themselves. The latter requires a qualified electronic signature and qualified electronic timestamp under Swiss law. An ordinary scan or typed name is not the same thing.
After incorporation, a new signature deposit may be needed when you change directors and signing authority. If you register as self-employed, check the signatures required for your own registration file.
Where can you certify a signature in Switzerland?
Start by asking the recipient which certifications it accepts. For commercial register documents, the register office or a notary is often the most direct route.
Canton of Vaud
For Vaud documents intended for use abroad, the canton identifies the Prefecture of the Lausanne district as the legalisation authority. Distinguish this from certifying a signature for a Swiss commercial register filing.
Under Vaud’s official instructions — French, the cantonal commercial register office certifies signatures needed for register entries. A notary may also do so. The canton states that the police, residents’ registration offices and justices of the peace are not competent for this certification.
Use the Vaud commercial register contact details to confirm the arrangements for your filing.
Signature certification in Geneva
For the Geneva commercial register: you can sign at the office, which certifies the signature under Article 21, or arrange certification with a notary. Explain when making the appointment that the signature is for the commercial register.
For documents intended for use abroad: the OCPM legalisation service — French specifies the route according to destination. An apostille on a private signature first requires certification by a Geneva notary. Geneva does not issue an apostille for a document intended for use within Switzerland.
At Geneva’s legalisation service, the signatory must attend unless their signature has been deposited there within the previous five years. Requests are generally processed immediately at the counter or within one to three days after receipt by post. Cases requiring checks may take longer.
Other French-speaking cantons
Fribourg’s commercial register FAQ — French also mentions the district court registry. Competent authorities therefore vary by canton.
For Valais, Neuchâtel, Jura or the Bernese Jura, find the relevant office in our Swiss commercial register directory, then check its instructions or those of the cantonal chancellery. Do not assume an authority recognised in one canton has the same powers in another.
Three situations, three routes
| Situation | Practical route | Mistake to avoid |
|---|---|---|
| Signing in Switzerland for a Swiss commercial register | Obtain the required document, arrange an appointment with the register or competent professional and bring identification | Paying for an international apostille when the document will remain in Switzerland |
| Signing abroad for a Swiss register | Confirm the register’s requirements, then arrange certification with an accepted authority or Swiss representation | Assuming a scanned signature is enough |
| Using a Swiss document abroad | Ask the recipient what certification it requires, then arrange legalisation and any apostille or other required procedure | Certifying a copy when the recipient requires an original signature |
The recipient is your starting point. It knows which document it needs to accept. The certifying authority checks something different: the signatory’s identity under the applicable procedure.
Prepare for the appointment
Bring the complete document and valid identification. When signing at the commercial register office, Article 21(2) accepts a valid passport, identity card or Swiss residence permit. For another authority or a notary, check that provider’s instructions.
The simplest approach is to bring the document unsigned and sign before the authorised person. If already signed, ask what to do rather than spontaneously adding another signature. Acknowledging an existing signature may follow a particular procedure.
Confirm opening hours, any appointment requirement, the document’s language and payment method. The checklist below covers the main items.
If the signature forms part of a commercial register amendment, make sure you use the latest application. Certification on an obsolete version may require the process to be repeated.
Check the file before travelling
| Item | Why check it? |
|---|---|
| Latest complete version of the document | Certification must concern the document that will actually be filed |
| Accepted, valid identification | The authority must identify the person signing |
| Exact recipient and intended use | A register filing and a document for overseas use may follow different routes |
| Number of originals | A scan may not be sufficient for the final file |
| Required signatures and authority | Identify each person who needs to attend and in what capacity |
Example: two managing directors have joint signing authority requiring both signatures. Certifying one signature does not turn that person’s authority into individual signing power. If the document requires joint representation, arrange all necessary signatures and certifications according to the instructions.
Likewise, someone appointed to deliver a file does not automatically gain authority to sign every company document. Separate physical delivery, authority to represent the company and identification of the signatories.
Signatures abroad and apostilles
Do you live outside Switzerland? First ask the receiving Swiss commercial register about its requirements. Depending on the case, a Swiss representation abroad or an authorised local body may assist.
For example, where a signature is made in France on a document intended for a Swiss institution, the Federal Department of Foreign Affairs describes a Swiss representation procedure — French: personal attendance, valid identification and the document to sign. Confirm local arrangements before travelling.
An apostille facilitates the use of certain public documents between states party to the Hague Convention. It confirms the origin of the official certification, not the commercial validity of the contract. It is not automatically required in every case: treaties or exemptions may apply.
A different legalisation chain may be required for a country or document outside the convention’s scope. A translation may also be requested. Confirm the route before paying for several successive certifications.
The same reasoning applies in reverse: when a Swiss document will be used abroad, start with the receiving foreign authority’s requirements.
Costs and processing times
Certification itself can be quick when the file is complete. The total time mainly depends on appointment availability, travel and any extra stages.
| Provider and service | Published fee | Scope |
|---|---|---|
| Vaud commercial register: one certified signature | CHF 30 including VAT | Signature required for the register file |
| Vaud notary: certifications on the same instrument | CHF 20–50 fee for the combined certification operations | Article 29 of the tariff; confirm any additional services and expenses |
| Geneva legalisation service: signatures | CHF 30 for the first, then CHF 8 for each additional signature on the same document | This service’s tariff, separate from a notarial quote or register filing |
| Geneva service: simple legalisation or apostille | CHF 30 | According to destination and the service’s conditions |
Two signatures certified together on one document therefore cost CHF 38 at the Geneva service. Prior notarial certification, translation or postage may be additional services.
Ask for the total price: certification, copies, apostille, translation and delivery. If a provider is managing incorporation, check what is already included.
Certification attests a fact at a particular date. The recipient may still require a recent document or a new one if its contents, identity details or signing powers have changed. It is not a certificate you can reuse indefinitely on any document.
Avoid paying for the wrong certification
A certified copy of a passport does not authenticate a signature on a register application. An apostille does not supply missing authority to represent a company. Before ordering a service, check the recipient’s exact request.
A message to confirm what is required
Before the appointment, send the recipient the relevant document and a message such as:
I need to sign this document in [country/canton] for [purpose]. Do you accept certification by [authority or notary]? Is an apostille or translation required? How many originals do you need, and how should I send them to you?
Keep the answer with the file. It helps you obtain the right certification and arrange any additional steps in the correct order.
Where signature certification fits into company formation
This French-language video covers the steps for forming a Swiss LLC or SA/AG, helping you place signature certification among the formalities to prepare.
Explore the Entreprendre en Suisse avec Sarah et Romain channel →
Before you travel
Signature certification becomes straightforward once the document, signatories and competent authority are identified. Prepare the latest version, check identification and confirm the recipient’s requirements. This keeps signature authenticity, the contract’s contents and international formalities separate.
We can help you form your Swiss LLC or form an SA, coordinating the incorporation documents and required signatures.
Frequently asked questions
Can my municipality certify my signature?
It depends on the canton and the document’s purpose. In Vaud, the residents’ registration office is not competent. Ask the recipient which authority it recognises.
Should I sign before the appointment?
Generally, bring the unsigned document and sign before the authority. If you have already signed it, ask for instructions before attending.
Does certification prove the contract is valid?
It certifies the signature, not the contents or suitability of the commitment. Legal advice about the contract is a separate service.
Is an apostille enough to form a Swiss company?
It may supplement a foreign certification, but does not replace the other incorporation documents and formalities. Confirm requirements with the receiving register.
Where can I authenticate a signature in Geneva?
For commercial registration, you can sign at the register office or have a notary certify the signature. For a document intended for use abroad, the OCPM legalisation service explains the procedure and any apostille requirement. These providers have different services and fees.
Sources and references
The local procedural sources below are in French. They remain useful for the authority names, documents and fees you will encounter when using services in French-speaking Switzerland.
- Commercial Register Ordinance, Article 21.
- Vaud notarial tariff, Article 29: certifications.
- Vaud commercial register fee schedule.
- Vaud: certifying a signature.
- Geneva: certifying documents and signatures.
- Geneva: signature certification and fees.
- Fribourg: legalisations and apostilles.
- Federal Department of Foreign Affairs: private signatures in France.
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Romain Prieur is a Swiss Certified Public Accountant and founder of Entreprendre.ch. With more than ten years of experience in audit and business advisory in Switzerland, he advises entrepreneurs on company formation, accounting and tax.
