Company Manager Gives a Guarantee for Another Company’s Debt in Turkey: Can Shareholders Challenge It? – 2026 Updated Guide

Can Shareholders Challenge an Unauthorized Company Guarantee in Turkey?

Can shareholders challenge a guarantee given by a company manager for another company’s debt in Turkey? Learn about validity, enforcement, director liability, and legal remedies.

A company manager may give a guarantee for another company’s debt, particularly within a group of affiliated businesses. However, the transaction may create serious risks when the company receives no benefit, shareholders are not informed, company assets are exposed, or the manager acts for a related business.

Foreign and minority shareholders may discover the guarantee only after receiving a lender notice, an enforcement warning, or information about a pledged company asset. Whether the guarantee can be challenged depends on the manager’s authority, the company’s internal approval rules, the lender’s knowledge, and the circumstances of the transaction.

Is a Company Guarantee for Another Debt Automatically Invalid?

No. A company may legally guarantee another company’s debt if the transaction is authorized, properly documented, and commercially justified.

A guarantee may be reasonable where the other company is part of the same business group, the transaction supports the company’s commercial interests, or the company receives a measurable benefit in return.

The transaction becomes questionable when the company guarantees a personal debt, supports a related company without receiving any benefit, exposes all corporate assets to an unreasonable risk, or acts only to protect the financial interests of a manager or controlling shareholder.

The articles of association, board resolutions, shareholder agreements, financing documents, and signing authorities should be reviewed before assessing validity.

Is Shareholder Approval Required?

Shareholder approval is not necessarily required for every guarantee. Depending on the company structure and the manager’s authority, the board or an authorized manager may be able to provide a guarantee in the ordinary course of business.

However, shareholder or general assembly approval may become important where the guarantee is unusually large, concerns a related company, secures a personal debt, involves a conflict of interest, or places essential company assets at risk.

The absence of individual notice to a foreign shareholder does not automatically invalidate the guarantee. The key question is whether the person who signed it had valid authority and whether the lender acted in good faith.

Can the Guarantee Bind the Company?

If the manager had valid representation authority and the lender reasonably relied on that authority, the guarantee may bind the company even if an internal approval requirement was violated.

This creates a distinction between the company’s external liability and the manager’s internal responsibility. The lender may be able to enforce the guarantee, while the company may separately seek compensation from the manager for acting improperly.

The company may have stronger grounds to challenge the guarantee if the lender knew that the manager lacked authority, participated in a related-party arrangement, ignored obvious irregularities, or accepted a guarantee that was clearly outside the company’s commercial purpose.

Forgery, fraud, unauthorized signatures, and sham transactions may also affect the guarantee’s enforceability.

What If the Guarantee Secures a Related Company’s Debt?

A related-party guarantee should be examined carefully. The company should determine whether it received a direct or indirect commercial benefit and whether the guarantee was proportionate to that benefit.

Suspicious circumstances may include a guarantee provided without a fee, a guarantee for a company controlled by the manager, transfer of the loan proceeds to a personal account, use of company real estate as security, or a guarantee amount far exceeding the company’s financial capacity.

If the related company later defaults, the guarantor company may be forced to pay the debt or face enforcement against its assets. The director may then face liability for creating an unjustified risk.

Can Foreign Shareholders Challenge the Guarantee?

Foreign shareholders may challenge the transaction through corporate, commercial, and compensation remedies. However, they cannot usually cancel a guarantee merely because they were not personally consulted.

A challenge may be considered where the guarantee involved lack of authority, fraud, a conflict of interest, abuse of majority control, violation of corporate procedures, or serious damage to the company.

The shareholder may request information, inspect corporate records, call a general assembly, seek an independent financial review, challenge an unlawful corporate decision, or pursue a director-liability claim.

If the loss belongs to the company, the primary claim generally belongs to the company. A shareholder may need to use a corporate or derivative procedure rather than claiming the company’s entire loss personally.

What Evidence Should Be Preserved?

Important evidence may include the guarantee agreement, underlying loan agreement, repayment schedule, board minutes, shareholder resolutions, signature circular, power of attorney, security documents, bank records, and communications with the lender or related company.

The company should preserve documents showing whether the guarantee was disclosed, whether any fee or benefit was received, and whether the manager had authority to sign.

Financial records may reveal that the related company received the loan proceeds or that the company was exposed to a risk far beyond its ordinary operations.

Electronic evidence may include corporate e-mail, messaging applications, digital signatures, online banking records, cloud documents, electronic approvals, and accounting entries.

Can the Company Request an Injunction?

An interim court measure may be requested where the lender is preparing enforcement, company assets may be sold, or the guarantee creates an immediate risk of serious financial harm.

The requested protection may concern enforcement against company assets, transfer of pledged property, collection from company accounts, or disposal of assets before the court evaluates the guarantee.

An injunction is not automatic. The application should explain the apparent lack of authority, the conflict of interest, the damage risk, and the evidence supporting the claim. The court may require security from the applicant.

The company should also consider internal protective measures, including revoking signing authority, changing bank permissions, restricting access to corporate records, and appointing a new authorized representative.

Can the Guarantee Be Released or Cancelled?

If the guarantee was forged, signed without authority, obtained through fraud, or created through collusion, the company may consider a release, cancellation, or non-enforcement claim.

The available remedy depends on the type of guarantee, the wording of the agreement, the company’s representation authority, and the lender’s knowledge.

If the guarantee is valid against the lender, the company may still seek repayment or compensation from the manager or related company. It may also seek recovery of amounts paid under the guarantee if a valid legal basis exists.

Can the Manager Be Personally Liable?

A manager may be personally liable if they guarantee another company’s debt for personal benefit, conceal the transaction, exceed their authority, breach management duties, or expose the company to an unreasonable loss.

The company may claim damages for enforcement costs, payments made under the guarantee, interest, penalties, lost business opportunities, legal expenses, and damage to its financial position.

Personal liability depends on the manager’s conduct, authority, intent, financial benefit, and the damage suffered by the company. The mere existence of a guarantee is not enough by itself.

Can a Criminal Complaint Be Filed?

A criminal complaint may be considered if the transaction involves fraud, breach of trust, forged signatures, false documents, unauthorized use of company assets, concealment of funds, or deliberate harm to the company.

The absence of shareholder approval alone does not automatically create criminal liability. The evidence should establish the manager’s intent, authority, the lender’s involvement, and the benefit obtained by the related company.

A criminal complaint does not automatically release the guarantee or stop enforcement. Commercial, corporate, and interim proceedings may also be necessary.

Who Is Responsible If the Related Company Does Not Pay?

The related company remains primarily responsible for its own debt. The guarantor company may also become responsible according to the guarantee’s wording and applicable legal rules.

The manager or director may be responsible internally if the guarantee was improperly given and caused damage to the company. A controlling shareholder may also face liability if they directly participated in the unlawful transaction.

The lender’s rights will depend on the loan agreement, guarantee document, security interests, and the validity of the signatures and authority involved.

What Can Foreign Shareholders Do from Abroad?

Foreign shareholders can generally appoint a Turkish lawyer through a power of attorney. The document may be issued before a consulate or local notary and may require legalization, apostille, and an official translation.

A lawyer can review the guarantee and loan documents, investigate the manager’s authority, communicate with the lender, request corporate information, seek interim protection, challenge enforcement, and pursue director-liability or compensation claims.

Lawyer Fırat Fesih Kaya assists foreign shareholders with unauthorized guarantees, related-party transactions, enforcement risks, corporate investigations, and asset-protection measures.

2026 Legal Considerations

In 2026, digital records may be decisive in guarantee disputes. Electronic signatures, online banking records, cloud documents, corporate e-mail, digital board approvals, accounting software, and electronic lender communications may show who approved the guarantee and who benefited from it.

Companies should maintain clear procedures for guarantees, group-company transactions, loans, mortgages, pledges, and related-party dealings. Foreign shareholders should request prompt notification of significant financing arrangements and new security interests.

Tax, accounting, corporate, and enforcement issues may arise together. A coordinated legal and financial review is therefore important.

Frequently Asked Questions (FAQ)

1. Can a company manager guarantee another company’s debt in Turkey?

Potentially, if the manager has valid authority and the transaction is commercially justified. A guarantee may create liability if it was unauthorized or harmful to the company.

2. Is shareholder approval required for every company guarantee?

No. The requirement depends on the company structure, internal documents, transaction size, related-party status, and the manager’s authority.

3. Can shareholders challenge a guarantee given without their knowledge?

They may be able to challenge it if there was fraud, lack of authority, conflict of interest, abuse of control, or violation of mandatory corporate procedures.

4. Does the guarantee remain valid if shareholder approval was missing?

It may remain binding if the manager had external representation authority and the lender acted in good faith.

5. Can a foreign shareholder be held personally liable for the guarantee?

Usually not. A shareholder may become personally liable only if they separately guaranteed the debt, became a co-debtor, pledged personal assets, or engaged in exceptional unlawful conduct.

6. Can an injunction stop enforcement of the guarantee?

An interim court measure may be available where enforcement creates an urgent risk of serious and irreversible harm.

7. What evidence is needed to challenge the guarantee?

The guarantee agreement, loan documents, corporate resolutions, signature records, financial statements, bank transfers, e-mails, messages, and evidence of the related-party relationship may be important.

8. Can the manager be personally liable for the company’s guarantee?

Yes. Liability may arise if the manager acted outside authority, concealed the transaction, misused corporate powers, or caused measurable damage.

9. Can a criminal complaint be filed?

Yes, if the facts may involve fraud, breach of trust, forgery, false documents, unauthorized asset use, or concealment of funds.

10. Can foreign shareholders handle the dispute without traveling to Turkey?

Usually, a foreign shareholder can appoint a Turkish lawyer under a valid power of attorney to investigate the guarantee and pursue legal remedies.

This article is provided for general informational purposes only and does not constitute legal advice. We recommend consulting a lawyer about your specific circumstances to avoid any loss of rights.

Expert Legal Support for Company Guarantee Disputes

Expert legal support is essential to avoid loss of rights. By working with a lawyer experienced in corporate guarantees, related-party transactions, lender enforcement, director liability, shareholder disputes, injunctions, and compensation claims, serving clients throughout Turkey and internationally, you can protect your legal interests.

Fırat Fesih Kaya Law Office provides professional legal support to foreign shareholders and companies facing unauthorized guarantees, group-company debt, pledged assets, lender disputes, director misconduct, and corporate recovery claims.

Phone: +90 312 434 22 22
Mobile/WhatsApp: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yildirim Tower No:148, Balgat, Cankaya, Ankara, Turkey