Turkish Company Changes Bank Signatory Authority Without Foreign Shareholder Consent: What Can Be Done? (2026 Updated Guide)

A Turkish company changes bank signatory authority without a foreign shareholder’s consent. Learn how to challenge unauthorized corporate decisions, protect company accounts, preserve evidence and seek urgent legal remedies.

A foreign shareholder may discover that a Turkish company has changed its bank signatory authority without consultation or consent, leaving another shareholder, director or manager with control over company accounts. This can create an immediate risk of unauthorized transfers, related-party payments, asset diversion, withdrawal of company funds or loss of practical control over the business. However, the fact that a foreign shareholder did not personally consent does not automatically make every change of bank authority unlawful. The decisive questions are who had corporate authority to make the change, whether the required corporate resolution was validly adopted, whether representation rules were followed, whether the shareholder had a contractual or statutory approval right and whether company assets are now at risk. The response should therefore combine corporate-law analysis with urgent asset-protection measures.

Can Bank Signatory Authority Be Changed Without Every Shareholder’s Consent?

Potentially, yes. A shareholder does not automatically possess a veto over every management or representation decision merely because they own shares in the company. The answer depends on the type of company, articles of association, corporate governance structure, shareholders’ agreement, existing representation arrangements and the decision through which the new authority was created.

The first task is therefore to identify the legal source of the disputed authority.

Obtain the Corporate Resolution Immediately

The foreign shareholder should obtain the resolution allegedly authorizing the change. Depending on the corporate structure, this may involve a board resolution, shareholders’ resolution, managers’ resolution or another corporate instrument.

Do not rely solely on the bank’s statement that “the company changed the authorized signatory.”

Determine Who Made the Decision

Identify the individuals who adopted or signed the relevant corporate decision. Determine whether they were legally authorized to act at that time and whether the necessary meeting and voting requirements were satisfied.

A formally prepared document is not necessarily a valid corporate resolution.

Review the Articles of Association

The articles of association can be central to the dispute. Review provisions concerning management, representation, appointment of directors or managers, joint signatures, limitations on authority and shareholder approval mechanisms.

The company’s actual governance structure should be compared with the authority presented to the bank.

Review the Shareholders’ Agreement

Foreign investors frequently negotiate additional protections through shareholders’ agreements. These may include reserved matters requiring investor consent, veto rights, board nomination rights, dual-signature requirements or restrictions on changes to banking authority.

A change may therefore raise contractual issues even where a corporate resolution appears formally valid.

Corporate Validity and Contractual Breach Are Different Questions

A transaction can create more than one legal issue. A resolution might have corporate effect while simultaneously breaching a shareholders’ agreement, depending on the circumstances.

The remedies should therefore be analyzed separately rather than assuming that contractual veto rights automatically determine every question of corporate representation.

Check the Trade Registry Records

Determine the company’s current registered representation structure and whether a change has been registered or announced where legally required.

Compare registry information with the authority currently recognized by the bank.

Determine Whether Authority Is Sole or Joint

This distinction can be critical. If a director previously required another person’s joint signature but is now able to operate the account alone, the risk profile may have changed substantially.

Obtain the bank’s current signing instructions and authorization records where legally accessible.

Ask the Bank What Documentation It Relied Upon

The company or authorized persons should determine which documents were submitted to the bank to change the signatory authority.

Relevant documents may include corporate resolutions, signature declarations, registry records and bank authorization forms.

Preserve the Previous Bank Mandate

Obtain evidence of the authority structure existing before the disputed change. This helps establish exactly what changed, when it changed and who benefited from the new arrangement.

Check Whether the Resolution Is Genuine

If the foreign shareholder or director does not recognize the resolution, examine whether signatures, meeting records and corporate books are authentic.

A forged resolution presents a fundamentally different problem from a genuine resolution adopted through an allegedly defective corporate procedure.

Falsified Minutes Require Immediate Attention

If meeting minutes were fabricated or signatures were forged, the dispute may extend beyond ordinary corporate litigation.

Original corporate records, electronic correspondence and signature evidence should be preserved immediately.

Review the Company Books

Corporate books may reveal whether the disputed decision was actually entered, when it was entered and whether related meeting records exist.

Preserve copies before records can be altered or replaced.

Examine Meeting Notice Requirements

If the authority change resulted from a shareholders’ or board decision, determine whether the relevant participants were properly invited and whether applicable procedural requirements were followed.

Excluding the foreign investor from a meeting can be important where their participation or vote was legally required.

Check Quorum and Voting Requirements

A resolution may be vulnerable if the required meeting or decision quorum was not satisfied.

The precise requirements depend on the company type, articles and nature of the decision.

Foreign Shareholder Consent May Be Contractually Required

Where the investment documents expressly require the foreign investor’s consent for changes to bank mandates, representation authority or designated financial controls, the absence of that consent may support contractual remedies.

The exact wording should be reviewed carefully.

Can the Bank Account Be Frozen?

A shareholder normally should not assume that simply contacting the bank will freeze a company account. The account belongs to the company, and the bank must operate according to valid authority and applicable legal obligations.

Where there is an imminent risk of asset dissipation, urgent judicial measures may need to be considered.

Interim Injunctions Can Be Critical

If there is credible evidence that company funds may be transferred, concealed or diverted before the dispute can be resolved, an interim measure may be strategically important.

The requested protection should be tailored to the specific risk and supported with concrete evidence.

Urgency Must Be Demonstrated

A general fear that another shareholder “might misuse the money” may not be enough. Evidence can include unusual transfers, attempted withdrawals, related-party payments, sudden changes in bank authority, asset transfers or communications indicating an intention to remove funds.

Monitor Company Accounts Lawfully

Persons legally entitled to access company banking information should preserve statements showing transactions before and after the authority change.

Create a transaction chronology rather than reviewing isolated payments.

Look for Transfers to Related Parties

Payments to shareholders, directors, relatives, affiliated companies or newly created entities should be examined carefully where they lack an obvious commercial explanation.

Related-party status does not itself prove wrongdoing, but the commercial basis should be documented.

Identify Unusual Cash Withdrawals

Large or repeated cash withdrawals following a change in bank authority can create significant evidentiary concerns.

Preserve transaction records and supporting accounting documentation.

Review Loans to Shareholders or Managers

Determine whether company funds have been characterized as loans, advances, expense reimbursements or other payments to insiders.

The accounting description should be compared with the actual economic transaction.

Review Payments to Affiliated Companies

A controlling shareholder may attempt to move value through management fees, consulting agreements, purchases or intercompany transfers.

Contracts, invoices and actual services should be reviewed together.

Bank Authority Does Not Mean Unlimited Legal Authority

A person technically capable of making a bank transfer does not automatically have the right to use company money for personal purposes.

Corporate assets remain company assets, and directors or managers may face liability for unlawful conduct depending on the circumstances.

Director and Manager Liability May Arise

If company officers breach statutory, contractual or fiduciary-type obligations applicable to their role and cause damage to the company, liability claims may become relevant.

The legal basis should be determined according to the company type and conduct involved.

The Company’s Loss Must Be Distinguished From the Shareholder’s Loss

If money is unlawfully removed from the company, the immediate financial loss may belong to the company rather than directly to the shareholder.

This distinction can affect who should bring a claim and what remedy should be requested.

Can the Corporate Resolution Be Challenged?

Potentially. The available action depends on the type of resolution, corporate structure, nature of the defect and applicable procedural requirements.

The resolution should be reviewed immediately because corporate challenges can be subject to important time limits.

Do Not Delay While Negotiating Internally

Foreign investors sometimes spend weeks negotiating with the local partner while funds continue moving.

Commercial negotiation can proceed, but it should not cause the investor to miss legal deadlines or lose the opportunity to seek effective interim protection.

What If the Foreign Shareholder Is Also a Director?

A shareholder who also holds a board or management position may have additional information and rights arising from that office.

Determine whether the individual was also unlawfully removed from management or deprived of representation authority.

Removal of Bank Authority and Removal From Management Are Different

Losing access to a bank account does not necessarily mean that a director has legally lost their corporate office.

Review each action separately.

What If the Foreign Director’s Authority Was Removed?

Obtain the underlying corporate decision, registry documentation and bank instructions. Determine whether the person or body that removed the authority had power to do so and whether applicable procedures were followed.

Can the Foreign Shareholder Call a General Meeting?

Depending on the company type, ownership percentage and circumstances, shareholder rights concerning general meetings may provide an important mechanism for addressing management and governance problems.

The specific statutory and contractual rights should be reviewed.

Information Rights Can Be Important

A shareholder facing unexplained banking changes should consider available rights to obtain information concerning company affairs.

Bank records, accounting entries, related-party transactions and corporate resolutions may become central evidence.

Accounting Records Should Be Preserved

Obtain lawful access to ledgers, bank reconciliations, invoices, payment records and management accounts.

Bank transactions should be connected with accounting entries to determine the stated purpose of each payment.

Preserve Electronic Evidence

Emails, internal messages and communications concerning the authority change may reveal who planned the decision and why.

Preserve evidence in its original form where possible rather than relying solely on screenshots.

Do Not Access Accounts Without Authorization

A shareholder should not use another person’s password or circumvent banking-security systems simply to investigate the dispute.

Evidence should be obtained through lawful corporate, judicial and procedural mechanisms.

What If Company Funds Have Already Been Transferred?

Identify the recipient, date, amount and stated basis for each transaction. Determine whether funds remain recoverable and whether urgent asset-protection measures against relevant persons or assets should be considered.

Speed can become particularly important after suspicious transfers occur.

Claims Against the Recipient May Be Relevant

If company money was transferred to another shareholder, manager or related entity without lawful basis, potential recovery claims should be examined according to the specific transaction.

The legal characterization should be based on evidence rather than assumptions.

Criminal Issues May Also Arise in Serious Cases

Where the evidence indicates forged documents, fraudulent conduct or unlawful appropriation of assets, potential criminal-law consequences may need to be analyzed separately.

A commercial disagreement should not automatically be characterized as criminal, but genuine evidence of criminal conduct should not be ignored.

Avoid Using Criminal Complaints Merely as Commercial Pressure

The legal characterization must follow the facts. Corporate litigation, contractual claims and criminal proceedings have different requirements and purposes.

A coordinated strategy is preferable to filing multiple proceedings without a clear evidentiary basis.

Foreign Investor Protection Requires an Evidence-Based Strategy

The most effective response usually combines corporate documents, registry evidence, banking records, accounting information, shareholders’ agreements and transaction evidence.

The objective is to establish precisely who changed the authority, whether the change was legally valid, what transactions followed and what immediate risk exists.

Review Other Corporate Authorities

A disputed banking change may be part of a broader attempt to exclude the foreign investor from management.

Check representation authority, electronic banking access, accounting access, company seals, tax systems, major contracts and other operational controls.

Check Whether New Directors or Managers Were Appointed

Determine whether the banking change followed a change in management.

If so, the validity of the underlying appointment may become central to the dispute.

Review Powers of Attorney

Banking or financial authority may also have been exercised through powers of attorney. Identify whether any relevant power remains valid and whether it was issued by a properly authorized company representative.

Notify the Bank Carefully

Where there is a genuine dispute concerning the validity of corporate authority, the bank may need to be informed through appropriate legal channels.

The communication should identify concrete legal issues and supporting documents rather than simply demanding that the bank obey one shareholder.

Bank Liability Is a Separate Question

A bank that acts on apparently valid corporate documents is not automatically responsible for an internal shareholder dispute.

Potential bank liability would require a separate analysis of the documentation, knowledge and conduct involved.

Consider the Business Continuity Problem

Freezing all company banking activity may protect assets but can also prevent salaries, taxes and suppliers from being paid.

Any requested interim measure should therefore balance asset protection with legitimate company operations where possible.

Foreign Shareholder Deadlock May Need a Broader Solution

If the bank-authority dispute reflects a complete breakdown between shareholders, resolving one banking mandate may not solve the underlying problem.

Negotiated separation, share transfer, corporate restructuring, management changes or litigation concerning shareholder rights may need to be considered.

Review Exit and Buyout Provisions

Shareholders’ agreements may contain deadlock, call option, put option, valuation, transfer or dispute-resolution mechanisms.

These provisions can become important when trust between the investors has collapsed.

Arbitration Clauses Must Be Checked

The shareholders’ agreement may contain an arbitration clause while corporate resolutions or urgent measures raise issues before Turkish courts.

The relationship between contractual dispute resolution and mandatory corporate remedies should therefore be examined carefully.

Foreign Proceedings May Also Be Relevant

Where the shareholders’ agreement is governed by foreign law or a parent company is located abroad, parallel contractual or corporate issues may arise outside Turkey.

The Turkish company’s immediate asset and governance position nevertheless requires local analysis.

2026 Practical Response Strategy

A foreign shareholder discovering an unauthorized change in bank signatory authority should act quickly but methodically. Obtain the corporate resolution and registry records, review the articles and shareholders’ agreement, identify the bank documents used, preserve the previous mandate, investigate subsequent transactions, secure corporate and accounting records, evaluate whether the resolution can be challenged and determine whether urgent interim judicial protection is required.

Where evidence suggests that the banking change is part of a wider attempt to exclude the investor or transfer company assets, the strategy should address the entire governance dispute rather than the bank mandate alone.

Frequently Asked Questions

Can a Turkish company change bank signatory authority without every shareholder agreeing?

Potentially, yes. The answer depends on the company structure, articles of association, valid corporate decision-making process and any contractual consent rights.

Does a foreign shareholder automatically have veto rights?

No. Veto rights must arise from applicable corporate rules, the articles, investment documents or another enforceable legal basis.

Can the shareholder ask the bank to freeze the account?

The shareholder should not assume that a unilateral request will be sufficient. Where urgent asset protection is required, appropriate judicial measures may need to be considered.

What if the corporate resolution is forged?

Preserve the original records and obtain evidence concerning the disputed signatures and corporate books immediately. Forgery can materially change both the civil and criminal analysis.

Can suspicious transfers be reversed?

Potential recovery depends on the recipient, legal basis, timing and location of the assets. Immediate investigation is important.

Can the director who transferred the money be personally liable?

Potentially, depending on their duties, the legality of the transactions and the loss caused.

Can the foreign shareholder challenge the corporate resolution?

Potentially. The available action and applicable deadline depend on the company type and nature of the resolution.

What if the shareholders’ agreement requires both shareholders to approve banking changes?

The provision may create important contractual rights and remedies, although its effect on the corporate validity of the decision must be analyzed separately.

Should criminal proceedings be considered?

Only where the facts support a criminal-law issue such as genuine forgery, fraud or unlawful appropriation. An ordinary shareholder disagreement should not automatically be treated as criminal.

What should the foreign shareholder do first?

Obtain the resolution that changed the banking authority, identify who adopted it and immediately review the company’s articles, shareholders’ agreement, registry records and subsequent bank transactions. If company assets are at imminent risk, urgent protective remedies should be evaluated without waiting for the shareholder dispute to resolve itself.

Client-Focused Legal Support for Foreign Shareholder and Banking Authority Disputes

Fırat Fesih Kaya Law Office assists foreign shareholders and international investors facing corporate-control disputes involving unauthorized bank signatory changes, exclusion from management, suspicious transfers, related-party transactions, disputed corporate resolutions and asset-protection measures. Lawyer Fırat Fesih Kaya provides legal assistance in reviewing corporate and investment documents, challenging disputed resolutions, investigating company transactions, evaluating director and manager liability and seeking urgent judicial protection where company 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