Company Seal or Signature Authority Is Misused in Turkey: What Can a Foreign Investor Do? 2026 Updated Guide

A company seal, signature authority or corporate signing power is misused in Turkey. Learn how foreign investors can stop unauthorized transactions, protect company assets, challenge contracts and pursue civil, commercial and criminal remedies.

Foreign investors operating a company in Turkey may discover that a director, manager, employee, former representative, business partner or another person has used the company’s seal, signature authority, electronic signature, banking authority or corporate documents without proper authorization. The consequences can be severe: unauthorized contracts may be signed, company money transferred, guarantees issued, assets sold, debts created or corporate records manipulated. The first priority is usually to determine exactly what authority the person legally possessed, immediately restrict continuing access and preserve evidence before additional transactions occur.

What Does Misuse of Signature Authority Mean?

Misuse can take several forms. A person may have no authority at all but sign documents in the company’s name. Alternatively, the person may possess valid signing authority but use it outside internal limits or contrary to the company’s interests.

These situations should not be treated as identical.

Check the Trade Registry Records First

The company’s current and historical registry records should be examined immediately. Determine who was authorized to represent the company on the date of the disputed transaction and whether representation required an individual or joint signature.

The timing is critical because authority may have changed between appointment, revocation and registration.

Review the Articles of Association and Corporate Resolutions

Trade registry information should be considered together with the company’s articles, shareholder or board resolutions and other corporate documents relevant to representation.

The objective is to reconstruct the exact authority structure existing when the disputed act occurred.

Was the Signature Individual or Joint?

Some companies permit a manager or director to represent the company individually. Others require two authorized persons to act together.

If joint representation was required but only one person signed, this can become a central issue in determining whether the transaction binds the company.

Internal Limits and External Representation Must Be Distinguished

A foreign investor may say that a manager was permitted internally to sign contracts only up to a particular value. Whether such an internal restriction can be asserted against a third party is a separate legal question.

The company must therefore distinguish internal breach of authority from lack of externally effective representation authority.

What If the Signature Is Completely Fake?

If the person whose signature appears on the document never signed it, the case changes substantially. The original document should be secured and handwriting or forensic examination may become necessary.

Do not alter or write on the original disputed document.

Preserve the Original Company Seal

If a physical company stamp or seal has been misused, secure it immediately. Determine who had possession and access and whether duplicate stamps exist.

Although a stamp alone does not necessarily establish valid corporate representation, its misuse can facilitate fraudulent transactions.

Revoke Continuing Authority Immediately

If the suspected person still possesses representation authority, the company should evaluate the corporate steps necessary to terminate or restrict that authority.

Relevant registration and notification procedures should be completed promptly.

Notify Banks Without Delay

If banking authority may have been abused, contact the company’s banks immediately through appropriate corporate channels.

Request review of authorized users, signature records, internet banking access, payment instructions, credit facilities and pending transactions.

Change Digital Access Credentials

Unauthorized corporate activity increasingly involves electronic systems rather than physical documents.

Review access to internet banking, corporate email, accounting software, electronic signatures, government platforms and cloud document systems.

Preserve Digital Evidence Before Removing Access

Before accounts or devices are wiped, preserve relevant logs, emails, messages and access records.

A rushed security response should not accidentally destroy evidence needed for litigation or a criminal investigation.

Review Recent Bank Transactions

Examine outgoing transfers, cash withdrawals, unusual beneficiaries, foreign transfers, payments to related parties and changes in standing instructions.

Create a chronology identifying each suspicious transaction.

Can the Bank Stop a Pending Transfer?

Where funds have not yet been irrevocably transferred, immediate communication may sometimes prevent further movement. The company should act as soon as the suspicious transaction is discovered.

Once funds move through multiple accounts, recovery can become substantially more difficult.

Emergency Court Measures May Be Necessary

If there is an immediate risk of asset dissipation, the company or affected investor may need to evaluate provisional judicial measures.

The appropriate remedy depends on the disputed asset, claim and factual circumstances.

Unauthorized Sale of Company Property

If a person uses purported corporate authority to sell company real estate, vehicles, shares or other valuable assets, determine whether the transfer has already been completed.

The available remedies can differ significantly between preventing an imminent transfer and reversing a completed transaction.

Obtain Land Registry Records for Real Estate

Where company real estate is involved, obtain the relevant title and transaction information promptly.

If a suspicious transfer is imminent or already disputed, urgent judicial measures may need to be evaluated.

Review Vehicle Registration

For company vehicles, determine whether ownership has already changed and obtain transaction documentation.

Preserve any power of attorney or corporate authorization used for the transfer.

Unauthorized Contracts Should Be Reviewed Individually

Do not assume that every agreement signed by the suspected person is automatically invalid.

For each contract determine the signatory, representation authority, counterparty, date, internal approvals, performance already completed and whether the third party knew of any lack or misuse of authority.

Third-Party Good Faith Can Become Important

A commercial counterparty may argue that it relied on apparent corporate authority and official records.

The company’s defense should therefore focus not only on internal instructions but also on what the counterparty knew or reasonably could determine from the circumstances and legally relevant public records.

What If the Counterparty Cooperated With the Manager?

Evidence of collusion can materially change the dispute.

Unusual pricing, related-party relationships, hidden side agreements, immediate onward transfers or payments to the manager personally may justify closer investigation.

Review Transactions With Related Companies

Misuse of corporate authority frequently involves transfers to another company controlled by the manager, shareholder or their associates.

Obtain corporate ownership information and trace the economic relationship between the parties.

Low-Value Asset Sales Require Investigation

A company asset sold substantially below market value may indicate that the transaction was not conducted in the company’s interests.

Obtain valuation evidence and compare the consideration with actual market conditions at the transaction date.

Unauthorized Guarantees Can Be Particularly Dangerous

A manager may purport to bind the company as guarantor or provide security for another person’s debt.

Review the underlying transaction, corporate approvals, representation authority and mandatory legal requirements applicable to the particular security.

Bank Loans and Credit Facilities Should Be Checked

Contact financial institutions to determine whether unauthorized loans, overdrafts, guarantees or security arrangements were created.

Obtain copies of disputed instructions and signature documents.

Misuse of Electronic Signature

If an electronic signature was used without authorization, secure the relevant device or credentials where possible and investigate when and how access occurred.

Digital logs may help establish the identity and timing of the transaction.

Powers of Attorney Must Be Reviewed

A company representative may have issued a power of attorney to another person, or an old power of attorney may still be circulating after the underlying relationship ended.

Identify all active and historical powers of attorney and evaluate revocation where necessary.

Former Managers Can Still Create Practical Risk

A manager may have been removed internally while banks, counterparties or other institutions still possess outdated authorization information.

Corporate changes should therefore be implemented operationally, not merely recorded in an internal resolution.

Accounting Records Can Reveal Hidden Transactions

Review general ledgers, bank reconciliations, related-party accounts, expense accounts, receivables and fixed-asset records.

Suspicious corporate transactions often leave accounting evidence even when management initially attempts to conceal them.

Preserve Emails and Messaging Records

Corporate emails and business messaging records can establish instructions, knowledge, approval or collusion.

Preservation should begin as soon as the dispute is discovered.

Do Not Secretly Alter Company Records

Once a dispute begins, corporate books and digital records should be preserved accurately.

Attempts to “correct” historical records retrospectively can damage the company’s credibility and potentially create additional legal problems.

Consider an Independent Internal Investigation

For significant losses, an independent review can reconstruct who authorized each transaction, how the control failure occurred and whether additional transactions remain undiscovered.

The investigation should cover corporate, banking, accounting and digital records.

Criminal Liability May Arise

Depending on the facts, unauthorized use of signatures, falsified documents, diversion of company assets or deceptive transactions may potentially raise criminal-law issues.

The precise offense cannot be determined merely from the fact that a corporate dispute exists. Evidence concerning intent, documents, authority and financial movement must be examined.

Commercial Dispute and Criminal Investigation Can Proceed Separately

A criminal complaint does not automatically recover company assets or invalidate contracts.

Civil or commercial proceedings and emergency asset-protection measures may need to be pursued separately.

Do Not Use a Criminal Complaint Only as Commercial Pressure

The criminal-law analysis should be based on concrete evidence indicating potential criminal conduct.

Ordinary disagreements about management decisions or contract interpretation should be distinguished from forgery, fraud or misappropriation allegations.

Director or Manager Liability May Arise

A director or manager who breaches legal or corporate duties may face personal liability under applicable circumstances.

The company should identify the specific act, resulting damage, causation and legal duty allegedly breached.

Shareholder Status Does Not Automatically Authorize Transactions

A person may own a substantial percentage of the company without having authority to represent it.

Ownership and representation are legally distinct issues.

A 50% Shareholder Cannot Necessarily Sign Alone

In a deadlocked company, one shareholder may attempt to act as if equal ownership provides unilateral management authority.

The actual management and representation structure must be examined independently from share percentage.

Foreign Parent Companies Should Review Group Authority

Multinational companies should determine whether the Turkish subsidiary’s manager purported to bind the foreign parent or another group company.

Each legal entity’s authority should be analyzed separately.

Can the Foreign Investor Sue the Manager Personally?

Potentially, depending on the investor’s legal position and the nature of the loss. A distinction should be made between damage suffered directly by the shareholder and damage suffered by the company.

This distinction can affect who has standing to pursue the claim.

Can the Company Recover Misappropriated Money?

Potentially. Recovery strategy depends on where the funds went, who received them, whether assets remain traceable and the legal basis of the claim.

Speed can be crucial where money is being moved between accounts.

Trace the Money

Prepare a transaction map identifying the company account, recipient account, subsequent transfers and related parties.

Bank records can become central evidence.

Foreign Transfers Require Immediate Attention

If funds have moved abroad, recovery can become more complex and may require coordinated proceedings across jurisdictions.

Preserve SWIFT records, payment instructions and beneficiary information immediately.

Notify the Counterparty

Where an unauthorized contract or payment instruction is discovered, a carefully drafted formal notice may help prevent further performance and preserve the company’s legal position.

The notice should avoid unnecessary admissions before the facts are fully investigated.

Review Insurance Coverage

Depending on the company’s policies, certain employee dishonesty, crime, cyber or management-related losses may potentially fall within insurance coverage.

Notification periods should be checked quickly.

Audit Previous Years

Once misuse is confirmed or strongly suspected, review historical transactions involving the same individual.

The discovered transaction may not be the first incident.

Review Corporate Governance Controls

After containing the immediate risk, strengthen dual authorization, banking limits, payment approvals, contract approval procedures and access controls.

Foreign investors should avoid concentrating corporate signing, banking and accounting authority in a single person without effective oversight.

Immediate Legal Action Checklist

A foreign investor discovering misuse of corporate signing authority should immediately secure physical and digital corporate credentials, verify trade registry and corporate authority records, preserve evidence, review bank transactions, notify financial institutions where appropriate, revoke continuing authority, investigate suspicious contracts and asset transfers, consider emergency judicial protection, evaluate criminal-law issues, review manager liability and begin tracing company assets.

Frequently Asked Questions

Is a company stamp enough to bind a Turkish company?

Not necessarily. The underlying representation authority and circumstances of the transaction must be examined.

What if the manager had authority but violated an internal monetary limit?

Internal restrictions and externally effective representation limitations must be distinguished. The third party’s legal position requires separate analysis.

Can a forged company signature be challenged?

Yes. The original document and surrounding evidence should be preserved, and forensic examination may become relevant.

Can the company immediately cancel the manager’s authority?

Appropriate corporate decisions and applicable registration or notification procedures should be completed promptly.

What if money has already left the company bank account?

The company should immediately trace the transfer, notify relevant financial institutions and evaluate available judicial recovery and asset-protection measures.

Can company property transferred without authorization be recovered?

Potentially. The answer depends on the authority used, nature of the transfer, counterparty’s position and whether registration or delivery has already occurred.

Can the manager face criminal investigation?

Potentially, where the evidence indicates conduct falling within applicable criminal offenses. Criminal liability depends on the specific facts and intent.

Does filing a criminal complaint automatically return company assets?

No. Separate civil, commercial or provisional judicial remedies may also be necessary.

Can a foreign shareholder personally sue?

Potentially, but direct shareholder loss should be distinguished from loss legally suffered by the company.

What should a foreign investor do first?

Stop continuing access, preserve evidence and reconstruct the exact corporate authority that existed when each disputed transaction occurred. Asset-protection and recovery measures should then be evaluated immediately before money or property can be transferred further.

Client-Focused Legal Support for Corporate Authority and Asset Misuse in Turkey

Fırat Fesih Kaya Law Office assists foreign shareholders, international companies and foreign investors facing unauthorized corporate transactions, misuse of signature authority, suspicious bank transfers, manager misconduct, company asset transfers and related commercial or criminal proceedings in Turkey.

Lawyer Fırat Fesih Kaya provides legal assistance in investigating disputed corporate authority, protecting company assets, challenging unauthorized transactions, pursuing manager liability, coordinating criminal complaints where legally appropriate and seeking urgent judicial measures where assets are at risk.

Phone:
+90 312 434 22 22

Mobile:
+90 532 769 22 22

Email:
info@firatfesihkaya.av.tr

Address:
Mevlana Boulevard No:221, Yıldırım Tower, Office No:148
06520 Balgat, Çankaya, Ankara, Turkey