Quick answer: In Türkiye, a secure electronic signature (güvenli elektronik imza) created under Law No. 5070 has the same legal effect as a handwritten signature, subject to statutory exceptions for transactions that require a special formal procedure. For companies, it is an important tool for MERSİS and other digital workflows—but it is not a universal requirement for every company action or every contract.
This guide explains the company e-signature framework: what legal effect a Turkish secure e-signature has, when companies use it, how foreign founders can obtain one, and how it differs from KEP, mali mühür and a physical company stamp.
The signatory is a natural person. Under Law No. 5070, the secure e-signature identifies the individual certificate holder; it does not create a separate corporate identity or, by itself, prove that the person has authority to bind a company. Corporate representation must still come from the company’s current representation rules, registry records and any required joint-signature arrangement.
What Counts as a Legally Secure E-Signature in Turkey?
Law No. 5070 distinguishes a secure electronic signature from a simple electronic mark. A secure electronic signature is based on a qualified electronic certificate and must meet the statutory security conditions for identity, sole control and detection of later changes to the signed data.
BTK states that a secure electronic signature:
- has the same legal result as a handwritten signature;
- has the same evidentiary strength as a handwritten signature;
- relies on a qualified electronic certificate for identity verification; and
- makes later alteration of the signed data detectable.
Important exception: A secure e-signature cannot replace transactions that the law subjects to an official form or special ceremony. Under the current Article 5 rule, guarantee contracts also remain outside the general equivalence rule except bank guarantee letters and surety bonds issued by insurance companies resident in Türkiye, which are expressly carved out of that restriction.
Secure E-Signature vs Simple Electronic Approval
| Method |
Typical example |
Legal / practical position |
| Secure electronic signature |
Qualified certificate used through an authorised signing method |
Handwritten-signature equivalence under Law No. 5070, subject to exceptions |
| Scanned signature image |
JPG/PNG pasted into a PDF |
Does not automatically obtain the statutory effect of a secure e-signature |
| Typed name / click-to-accept |
Email acceptance or website checkbox |
May have evidentiary/contractual relevance depending on context but is not the same statutory tool |
| Foreign qualified certificate |
Certificate issued by a foreign provider |
Recognition depends on Law No. 5070, international arrangements and/or acceptance by a Turkish certificate-service provider |
Where Companies Use E-Signatures
Company use cases depend on the platform and transaction. Common areas include:
- MERSİS corporate-decision modules and selected registry processes;
- electronic applications and official submissions where the relevant system supports/requests e-signature;
- electronic contracts and commercial documents where secure e-signature is an appropriate execution method;
- tax, social-security and other public digital systems where applicable;
- internal corporate approval workflows.
Different Turkish portals use different authentication and professional filing mechanisms, so the e-signature requirement should be mapped to the specific platform and transaction.
Secure electronic signatures support many company and public-sector digital workflows in Türkiye.
MERSİS: What E-Signature Can Actually Do
The Ministry of Trade has introduced several MERSİS functions that explicitly use e-signature. Examples include:
- LLC General Assembly Decision Module: qualifying LLCs whose shareholders are all natural persons with e-signatures can circulate and sign General Assembly decisions electronically through MERSİS;
- JSC Board Decision Module: circular-type board decisions can be created electronically with e-signature under the applicable MERSİS procedure;
- digital signature declaration workflows introduced for specified registry processes.
This does not mean that company formation is always completed “within minutes from anywhere in the world” using only e-signature. Foreign-document preparation, identity, Trade Registry requirements, powers of attorney, banking and other institution-controlled steps remain separate.
For MERSİS itself, see MERSİS Company Registration in Turkey.
Who Issues Secure E-Signatures?
A secure electronic signature is obtained through a qualified electronic certificate issued by an Electronic Certificate Service Provider (ESHS). BTK publishes the authorised providers.
The provider controls the application and identity-verification procedure. Requirements can differ according to:
- whether the applicant is a Turkish citizen or foreign national;
- the identity numbers/documents available;
- the provider’s identification method;
- certificate term and signing technology;
- whether hardware or remote/cloud signing options are offered under the applicable rules.
Issuance timing and identity-verification routes vary by authorised provider and applicant profile, so the application should be planned around the provider’s current process.
Can a Foreigner Obtain a Turkish E-Signature?
Foreign nationals can use Turkey’s secure e-signature framework when they satisfy the chosen authorised provider’s identity and application requirements.
Before applying, confirm:
- which identity number/document the provider accepts;
- whether the provider requires physical identity verification or offers another compliant route;
- whether a residence permit or foreigner identification number is needed for that provider/product;
- how the certificate/device will be delivered and activated;
- which Turkish platform the founder actually needs the signature for.
Obtain the e-signature when the company’s actual workflow requires it, so the certificate is introduced at the right point in the operating sequence.
Is a Foreign E-Signature Valid in Turkey?
Foreign electronic signatures can be recognised in Türkiye under the framework described by BTK. The legal effect of certificates issued by foreign certificate-service providers is determined by international agreements, and a foreign certificate can also be treated as a qualified certificate where it is accepted by a Turkish electronic certificate-service provider under the statutory framework.
In practice, a Turkish public platform may still require a certificate/authentication method that the system technically accepts. Therefore, legal recognition and platform compatibility are separate questions.
Does Secure E-Signature Make Every Contract Valid?
No. The signature method is only one part of contract validity.
You must still check:
- whether the signer has corporate representation authority;
- whether joint signatures are required;
- whether the transaction requires a special legal form;
- whether a notary, registry or other official process is required;
- whether the receiving institution accepts that electronic format.
A secure e-signature cannot cure lack of corporate authority.
Company E-Signature vs Kaşe, KEP and Mali Mühür
| Tool |
Whose / what identity? |
Main function |
| Secure e-signature |
Natural person / authorised signer |
Legally significant electronic signature |
| Kaşe |
Company information |
Physical operational stamp |
| KEP |
Registered electronic-mail account |
Evidence-oriented registered electronic communication |
| Mali mühür |
Entity / taxpayer electronic certificate |
Specified GİB e-document and tax-system functions |
These are complementary tools, not substitutes for one another.
Related guides:
Workon coordinates the company setup and digital-tool sequence according to the agreed scope.
Banking: How E-Signature Fits Bank KYC
A Turkish e-signature can be useful in banking or digital instruction workflows where the bank supports it, but it does not automatically replace corporate-account opening, KYC/AML, source-of-funds review or the bank’s own signature/identification requirements.
For corporate banking, see How to Open a Business Bank Account in Turkey.
Security: The Certificate Belongs to the Signer
A secure e-signature should be controlled by the certificate holder. Do not share the signing credential, PIN or authentication factor with staff or service providers.
If the signing device or credentials are lost or compromised:
- contact the certificate provider immediately;
- follow the provider’s suspension/revocation process;
- review whether any unauthorised signing occurred;
- obtain replacement credentials under the provider’s procedure.
E-Signature Decision Checklist for Foreign Founders
- Identify the exact Turkish platform or document that requires secure e-signature.
- Confirm whether the action can instead be completed through PoA or another authorised workflow.
- Choose a BTK-listed certificate-service provider.
- Confirm foreign-applicant identity requirements before travelling or ordering.
- Check platform compatibility before relying on a foreign certificate.
- Align the e-signature with the company’s registered representation rules.
- Keep KEP, mali mühür, bank credentials and e-signature as separate tools.
- Protect and revoke compromised credentials immediately.
How Workon Coordinates the Digital Setup
Workon coordinates company setup and post-registration operational readiness for foreign founders and overseas companies entering Türkiye. Depending on the agreed scope, this can include identifying when e-signature, KEP or financial seal is needed, coordinating document sequencing and connecting those tools with MERSİS, banking, licensed CPA and other operating workflows.
Electronic certificate issuance is performed by authorised certificate-service providers; regulated legal/tax services remain with the appropriately licensed professionals.
Review Workon’s company registration and operational coordination service.
Official Sources
Frequently Asked Questions
Not for every founder or company action. Identify which Turkish platform, filing or document actually requires a secure electronic signature and who is authorised to sign. Some workflows use another accepted authentication or authorised-representation route.
Legal recognition and technical acceptance are separate questions. Foreign certificates can be recognised under the applicable legal framework, but the receiving Turkish platform must also support the certificate and signing method. Check both before relying on a foreign e-signature.
A secure electronic signature (güvenli elektronik imza) is the statutory signature under Law No. 5070 that satisfies the secure-signature conditions and is based on a qualified electronic certificate (nitelikli elektronik sertifika). It generally has the same legal effect as a handwritten signature, subject to the statutory exceptions.
No. Under Law No. 5070 the signatory is a natural person. The e-signature identifies that certificate holder, but corporate representation authority must still be established from the company’s current representation rules, Trade Registry records and any required joint-signature arrangement.
Choose an appropriate BTK-listed electronic certificate service provider and confirm its current foreign-applicant identity requirements, verification method, delivery and activation process. Accepted documents and signing technology vary by provider and product; a particular ID number, fully remote route or USB token should not be assumed universal.
It can be used in MERSİS and Trade Registry workflows where that specific module or transaction accepts secure e-signature, including certain corporate-decision procedures. It does not mean every company-registration or amendment step can be completed only with e-signature; transaction-specific registry, identity, document and representation requirements still apply.
Note: Last reviewed 17 September 2026. This guide provides general operational information about electronic signatures in Türkiye. Workon coordinates the digital-setup workflow with authorised certificate providers and appropriately licensed professionals according to the company’s transaction and platform needs.
