Introduction
Bank guarantees in Turkey are among the most important security instruments used in commercial transactions, construction contracts, public tenders, lease agreements, project finance, international trade, distribution agreements, supply contracts and infrastructure projects. A Turkish bank guarantee, commonly known as a letter of guarantee or banka teminat mektubu, allows a beneficiary to secure payment or performance risk through the independent undertaking of a bank.
In commercial life, a bank guarantee provides practical confidence. Instead of relying only on the contractual promise of the debtor, the beneficiary receives a written undertaking from a bank. If the debtor fails to perform the secured obligation, the beneficiary may demand payment from the bank within the limits and conditions of the guarantee letter.
Bank guarantees are especially common in Turkey because Turkish commercial practice frequently requires strong, liquid and quickly enforceable security. Public authorities, employers, landlords, contractors, suppliers, customs authorities and financial institutions often demand bank guarantees before entering into contracts or releasing goods, permits or payments.
However, bank guarantees also create complex legal disputes. The applicant may argue that the beneficiary’s payment demand is abusive, premature, fraudulent or contrary to the underlying contract. The bank may face pressure from both sides. The beneficiary wants immediate payment, while the applicant may seek an injunction preventing the bank from paying. Turkish courts must then balance the independent nature of bank guarantees with the principle of good faith and prohibition of abuse of rights.
This article provides a comprehensive legal guide to bank guarantees in Turkey, focusing on their legal nature, enforcement, payment demands, injunctions, abuse of rights, dispute resolution and practical drafting considerations.
1. What Is a Bank Guarantee in Turkey?
A bank guarantee is a written undertaking issued by a bank in favor of a beneficiary, usually at the request of a customer called the applicant. The bank undertakes to pay a specified amount to the beneficiary if the conditions stated in the guarantee letter are met.
There are usually three legal relationships in a bank guarantee structure:
The first relationship is the underlying contract between the applicant and the beneficiary. This may be a construction contract, supply contract, lease agreement, public tender, loan agreement, distribution agreement or project agreement.
The second relationship is the counter-guarantee or reimbursement relationship between the applicant and the bank. The applicant requests the bank to issue the guarantee and usually agrees to reimburse the bank if payment is made to the beneficiary.
The third relationship is the guarantee relationship between the bank and the beneficiary. This is the bank’s written undertaking to pay according to the terms of the guarantee letter.
The central legal feature of a bank guarantee is that the bank’s undertaking is generally treated as independent from the underlying contract. The beneficiary’s demand is examined primarily according to the wording of the guarantee letter, not according to every dispute arising from the underlying contract.
2. Legal Framework of Bank Guarantees in Turkey
Turkish law does not contain a single comprehensive statute dedicated exclusively to bank guarantee letters. For this reason, their legal nature has been developed through doctrine, court practice and the application of general contract law principles. Legal commentary commonly explains that bank guarantee letters are not specifically regulated as a separate contract type under Turkish law and are often analyzed by reference to the Turkish Code of Obligations rules on guarantee of a third person’s performance, particularly Article 128.
Banking legislation is also relevant because issuing guarantees is part of banking activity. Banking Law No. 5411 includes guarantee transactions among the fields of activity that banks may conduct, together with other banking operations such as loans, payment transactions, foreign exchange transactions, capital market activities and financial leasing where permitted.
From a banking supervision perspective, bank guarantees are also treated as credit exposure. Banking Law No. 5411 defines loans broadly and includes non-cash loans such as letters of guarantee, counter-guarantees, suretyships, avals, endorsements and acceptance loans within the wider concept of credit exposure.
This is important because a bank guarantee is not merely a simple document issued by a bank officer. It is a regulated banking risk. The issuing bank must assess the applicant’s creditworthiness, allocate limits, obtain counter-security where necessary, monitor exposure and comply with internal risk management rules.
3. Legal Nature of Turkish Bank Guarantees
The legal nature of bank guarantees in Turkey has been debated in legal doctrine. Some discussions compare bank guarantees with suretyship, while the dominant commercial understanding treats them as independent guarantee undertakings rather than accessory suretyship obligations.
This distinction is crucial. A suretyship is accessory to the principal debt. If the principal debt is invalid, extinguished or unenforceable, the surety may generally rely on defenses arising from the principal relationship. A bank guarantee, by contrast, is usually independent. The bank’s obligation depends on the wording of the guarantee letter and the beneficiary’s demand, not on a full judicial examination of the underlying dispute.
The independent nature of bank guarantees serves commercial certainty. A beneficiary accepts a bank guarantee because it expects quick payment without being forced to litigate the entire underlying contract first. If every disagreement between the applicant and beneficiary could prevent payment, the bank guarantee would lose much of its commercial value.
However, independence is not absolute. Turkish law recognizes good faith and prohibits abuse of rights. If the beneficiary’s demand is clearly abusive, fraudulent or unsupported by the guarantee conditions, the applicant may seek legal protection. This tension between independence and abuse prevention is at the center of many bank guarantee disputes in Turkey.
4. Types of Bank Guarantees Used in Turkey
Bank guarantees in Turkey may take different forms depending on the commercial purpose.
Performance guarantees secure the proper performance of contractual obligations. They are common in construction, infrastructure, supply and service contracts.
Advance payment guarantees secure the repayment of advance payments made by the beneficiary to the applicant if the applicant fails to perform.
Bid bonds secure the bidder’s obligation to sign the contract or provide performance security if the bid is accepted.
Retention guarantees replace cash retention amounts in construction or supply contracts.
Payment guarantees secure payment obligations such as rent, purchase price, loan repayment or trade debt.
Customs guarantees may be required in import, export, bonded warehouse or customs duty-related procedures.
Court or administrative guarantees may be used where a party must provide security in litigation, enforcement, tax or administrative processes.
The legal analysis depends heavily on the wording of the guarantee. A guarantee described as a “performance guarantee” may still be payable on first demand if the text says so. Therefore, the title of the document is less important than its operative clauses.
5. First Demand Bank Guarantees
Many Turkish bank guarantees are drafted as first demand guarantees. In a first demand guarantee, the bank undertakes to pay the beneficiary upon receipt of a written demand, often without requiring proof of breach, loss or default.
First demand guarantees are powerful instruments because they transfer immediate payment risk to the bank and reimbursement risk to the applicant. The beneficiary does not need to prove the underlying breach in full before receiving payment, provided that the demand complies with the guarantee terms.
However, the exact wording matters. Some guarantees require a simple written demand. Others require the beneficiary to state that the applicant failed to perform. Some require additional documents, such as termination notice, engineer certificate, court decision, invoice, default notice or administrative assessment.
The more conditional the guarantee, the greater the bank’s responsibility to examine whether the demand satisfies the stated conditions. The more unconditional the guarantee, the narrower the bank’s role becomes.
6. Parties’ Rights and Obligations
The beneficiary has the right to demand payment if the guarantee conditions are met. The beneficiary must submit the demand within the guarantee period and in the required form.
The bank must examine whether the demand complies with the wording of the guarantee letter. If the demand is compliant, the bank generally has an obligation to pay. The bank should not transform itself into a court deciding the entire underlying contract dispute.
The applicant is the party that requested the guarantee. If the bank pays the beneficiary, the applicant usually must reimburse the bank under the bank-customer relationship. The applicant may later sue the beneficiary if the payment demand was wrongful under the underlying contract.
This structure is important because payment under a bank guarantee does not always end the dispute. It may simply shift the dispute from “Should the bank pay?” to “Was the beneficiary entitled to keep the money?”
7. Bank’s Examination Obligation
A bank receiving a payment demand must review the demand according to the guarantee letter. The bank should check whether the demand was submitted by the correct beneficiary, within the guarantee period, in the required form, for an amount not exceeding the guarantee limit and with the required documents if any.
The bank is not generally expected to conduct a full investigation into the underlying contract. For example, in a construction dispute, the bank does not normally determine whether the contractor actually delayed the project, whether the employer caused the delay, whether the defects were serious or whether liquidated damages were properly calculated.
However, the bank should not pay blindly if the demand is facially defective. If the guarantee requires a signed written demand and the demand is unsigned, payment may be improper. If the guarantee expired, payment may be unlawful. If the beneficiary demands more than the guarantee amount, the bank should not pay the excess.
8. Enforcement of Bank Guarantees in Turkey
The practical enforcement of a bank guarantee usually begins with a written payment demand by the beneficiary. The demand should comply with the terms of the guarantee letter. It should identify the guarantee, state the requested amount, refer to the relevant default or condition if required, and be submitted before expiry.
If the bank accepts the demand as compliant, it may pay the beneficiary and then seek reimbursement from the applicant. If the bank refuses payment, the beneficiary may file a lawsuit or initiate enforcement proceedings depending on the nature of the claim and available documentation.
For beneficiaries, timing is critical. A demand submitted after the expiry date may be rejected even if the applicant breached the underlying contract earlier. For applicants, timing is equally critical because an injunction request must usually be made before the bank pays. After payment, the applicant may still sue the beneficiary, but the dispute becomes a recovery action.
9. Expiry Dates and Definite-Term Guarantees
Bank guarantees may be definite-term or indefinite-term. A definite-term guarantee expires on a specified date unless extended. In commercial practice, many guarantees are issued with an expiry date and may be extended upon request.
The beneficiary should monitor expiry dates carefully. If the underlying contract is not completed or the risk continues, the beneficiary may need to request extension before expiry. Many contracts provide that if the applicant fails to extend the guarantee, the beneficiary may demand payment before expiry.
Applicants should also monitor guarantee periods. If the underlying obligation has ended, the applicant should request the return or release of the guarantee. Banks may continue to charge commission while the guarantee remains outstanding.
Disputes often arise where the beneficiary refuses to return a guarantee even though the applicant claims that all obligations have been performed. In such cases, the applicant may seek release of the guarantee through negotiation, litigation or injunction depending on the facts.
10. Wrongful Demand and Abuse of Rights
One of the most common disputes involves allegedly wrongful payment demands. The applicant may argue that the beneficiary is demanding payment despite full performance, despite absence of loss, despite termination being invalid, or as commercial pressure.
Turkish law allows the applicant to argue abuse of rights in exceptional cases. However, because bank guarantees are independent instruments, courts generally require strong and clear evidence before preventing payment.
Recent legal commentary on Turkish practice emphasizes that to prevent encashment of bank guarantee letters, courts require proof that the demand amounts to abuse of rights, and the proof must be based on clear evidence that allows the court to identify abuse without complex interpretation.
This high threshold protects the commercial function of bank guarantees. If courts easily blocked payment whenever the applicant alleged breach of the underlying contract, bank guarantees would no longer provide reliable security.
11. Preliminary Injunctions Against Payment
An applicant seeking to stop payment under a bank guarantee may apply for a preliminary injunction. The aim is to prevent the bank from paying the beneficiary until the dispute is resolved.
However, Turkish courts are cautious in granting injunctions against bank guarantee payments. The applicant must usually show that the demand is clearly abusive, fraudulent or contrary to the guarantee terms. Ordinary contractual disputes are generally not enough.
For example, a contractor’s argument that “the employer also caused delay” may require detailed examination and expert evidence. This may not be sufficient for an immediate injunction. By contrast, if the beneficiary demands payment after the guarantee has expired, or demands payment under a guarantee already returned or released, the applicant may have stronger grounds.
Injunction requests should be supported by written and objective evidence. Courts may also require security from the applicant. The legal petition should focus on clear abuse, not merely on broad allegations of unfairness.
12. Fraud Exception and Bad Faith Demand
The fraud or bad faith exception is closely related to abuse of rights. If the beneficiary knowingly makes a false demand or relies on a situation that clearly does not exist, the applicant may argue that payment should be stopped.
However, fraud must be clear. The court will not usually conduct a full trial at the injunction stage. Therefore, the applicant should present strong documents such as signed release letters, court decisions, final account approvals, written admissions, settlement agreements, expiry evidence or documents proving that the beneficiary’s demand is objectively impossible.
The fraud exception protects the integrity of bank guarantees without destroying their independence. It prevents the beneficiary from using the guarantee as an instrument of obvious injustice while preserving the beneficiary’s right to quick payment in ordinary cases.
13. Disputes Between Beneficiary and Applicant
Even if the bank pays the guarantee amount, the applicant may file a lawsuit against the beneficiary. The applicant may claim that the beneficiary was not entitled to retain the amount under the underlying contract.
This lawsuit is different from an injunction against the bank. The court may fully examine the underlying contract, performance, defects, delay, damages, termination, set-off, penalties and unjust enrichment.
For example, in a construction contract, the employer may collect payment from a performance guarantee. The contractor may later sue the employer, arguing that there was no breach or that the amount collected exceeded actual damages. The court may appoint experts and examine the entire contractual relationship.
Therefore, payment under a bank guarantee does not necessarily mean that the beneficiary has won the final dispute. It means that the beneficiary has received immediate liquidity, subject to later legal review between the contractual parties.
14. Disputes Between Bank and Applicant
After the bank pays the beneficiary, it usually demands reimbursement from the applicant. The applicant may dispute reimbursement by arguing that the bank paid despite a defective demand, expired guarantee, injunction order or breach of the bank’s examination duty.
The bank-customer relationship is usually governed by banking contracts, credit agreements, guarantee issuance applications, reimbursement undertakings and counter-security documents. The applicant may have provided cash collateral, mortgages, pledges or account blocking authority to the bank.
If the bank paid properly under the guarantee, the applicant’s reimbursement defense may be weak. But if the bank paid after expiry or in violation of a court order, the applicant may have a stronger claim against the bank.
15. Disputes Between Beneficiary and Bank
If the bank refuses to pay, the beneficiary may sue the bank. The beneficiary will argue that the demand complied with the guarantee and that the bank breached its independent payment obligation.
The bank may defend itself by arguing that the demand was late, incomplete, unsigned, made by an unauthorized person, exceeded the guarantee amount, did not include required documents, or was prevented by a court order.
The court will examine the text of the guarantee letter carefully. Bank guarantee litigation often turns on wording. A single phrase such as “upon first written demand,” “provided that,” “against presentation of,” “within the guarantee period” or “without protest” may determine the outcome.
16. Public Procurement and Bank Guarantees
Bank guarantees are widely used in Turkish public procurement. Bidders may provide bid bonds, while contractors may provide performance guarantees. Public authorities generally require strong, unconditional and liquid security to protect public interests.
In public tender practice, guarantee wording is often standardized and strict. If a bidder or contractor fails to comply with tender or contract obligations, the administration may demand payment.
Disputes in public procurement guarantee cases may involve both administrative law and private law elements. The contractor may challenge the underlying administrative act, while also seeking to prevent or recover payment under the guarantee.
Because public authority demands may have immediate financial consequences, contractors should act quickly and preserve all tender, contract, correspondence and performance documents.
17. Construction Contracts and Bank Guarantees
Construction is one of the most common fields for bank guarantee disputes in Turkey. Employers frequently require performance guarantees, advance payment guarantees and retention guarantees from contractors.
Disputes may arise from delay, defective works, termination, unpaid progress payments, employer-caused disruption, force majeure, change orders, provisional acceptance, final acceptance and release of guarantees.
Contractors often seek injunctions when employers demand payment despite disputed performance issues. Employers argue that the guarantee exists precisely to secure such risks and should be paid immediately.
The outcome depends on the wording of the guarantee and the strength of evidence showing abuse. A contractor’s general objection to the employer’s claim is usually not enough; the contractor must show a clear legal reason preventing payment.
18. International Bank Guarantees and URDG 758
International transactions may use demand guarantees subject to the Uniform Rules for Demand Guarantees, commonly known as URDG 758, published by the International Chamber of Commerce. If the guarantee expressly incorporates URDG 758, its rules may affect demand procedure, document examination, expiry, extension and rejection notices.
However, not every Turkish bank guarantee is subject to URDG 758. Domestic bank guarantees often rely on Turkish law wording and banking practice. Therefore, parties should not assume that international rules apply unless they are expressly incorporated.
In cross-border transactions, the parties should determine governing law, jurisdiction, language, demand method, bank branch responsibility, currency, sanctions issues and document requirements.
19. Bank Guarantees and Letters of Credit
Bank guarantees should not be confused with letters of credit. A letter of credit is generally a payment mechanism used in trade finance where the bank pays against compliant documents. A bank guarantee is a security instrument designed to protect against non-performance or non-payment.
Both instruments may be independent from the underlying contract, but their commercial functions differ. A letter of credit supports payment for goods or services, while a bank guarantee secures risk of default.
The distinction matters because different international rules, banking practices, document standards and dispute patterns may apply.
20. Drafting Tips for Beneficiaries
A beneficiary should ensure that the guarantee is clear, unconditional where appropriate, payable on first written demand, issued by a reliable bank, valid for a sufficient period, in the correct amount and aligned with the underlying contract.
The guarantee should identify the beneficiary correctly. It should specify whether partial demands are allowed. It should state the expiry date clearly. It should define the method of demand. It should avoid unnecessary documentary conditions unless the beneficiary wants a conditional guarantee.
Beneficiaries should also monitor expiry dates and request extensions in time. If the applicant refuses extension, the beneficiary should decide whether to demand payment before expiry.
21. Drafting Tips for Applicants
Applicants should carefully review guarantee wording before issuance. A first demand guarantee may expose the applicant to immediate payment risk even where the underlying dispute is unresolved.
Applicants should negotiate reasonable expiry dates, release conditions, reduction mechanisms, maximum amounts and links to contract milestones. For example, a performance guarantee may be reduced after provisional acceptance and released after final acceptance.
Applicants should also monitor whether the underlying obligation has ended. If the beneficiary refuses to return the guarantee, the applicant should send written requests and preserve evidence.
22. Drafting Tips for Banks
Banks should draft guarantee letters clearly and avoid ambiguous wording. The bank’s payment obligation, expiry date, maximum amount, demand method, required documents and governing rules should be precise.
Banks should also maintain internal approval records, applicant reimbursement documents and credit limit files. Since guarantees are treated as credit exposure, banks must manage risk properly under banking legislation. Banking Law No. 5411 treats guarantee transactions and non-cash loan exposures as part of the banking and credit framework.
When a demand is received, the bank should review it promptly and document its decision. If there is a court injunction, the bank must comply. If the demand is defective, the bank should communicate rejection carefully and within applicable time limits.
23. Evidence in Bank Guarantee Disputes
Evidence is critical in bank guarantee litigation. Relevant documents may include:
The original guarantee letter, underlying contract, guarantee issuance application, bank-customer agreement, payment demand, extension requests, release letters, default notices, termination notices, progress payment certificates, acceptance certificates, correspondence, expert reports, court injunctions, bank internal records and reimbursement documents.
For injunction applications, the applicant should present clear written evidence of abuse. For recovery claims after payment, the applicant may present broader evidence concerning the underlying contract.
Beneficiaries should also preserve demand evidence, including delivery records, bank receipt confirmation and documents submitted with the demand.
24. Dispute Resolution in Bank Guarantee Cases
Bank guarantee disputes may be resolved before Turkish courts, arbitral tribunals or foreign courts depending on the underlying contract and guarantee wording. However, disputes involving a Turkish bank guarantee may still require Turkish court involvement, especially for injunctions or enforcement against a Turkish bank.
If the underlying contract contains arbitration, disputes between applicant and beneficiary may be resolved by arbitration. But an urgent injunction preventing a Turkish bank from paying may need to be sought before Turkish courts, depending on the circumstances.
This creates a multi-layered dispute structure. The beneficiary may demand payment from the bank. The applicant may seek an injunction. The bank may face payment and reimbursement questions. The underlying contract dispute may continue separately before arbitration or court.
A strong dispute strategy should address all layers together.
25. Practical Checklist for Bank Guarantee Disputes
A party involved in a bank guarantee dispute in Turkey should follow a structured checklist:
Identify the guarantee type.
Read the payment clause carefully.
Check the expiry date.
Confirm the maximum amount.
Identify required demand documents.
Determine whether the demand was compliant.
Assess whether there is clear abuse or fraud.
Collect written evidence.
Act quickly before payment if injunction is needed.
Preserve rights under the underlying contract.
Consider recovery action after payment if necessary.
Review reimbursement obligations between bank and applicant.
Check whether arbitration or court jurisdiction applies.
Calculate damages and interest accurately.
26. Common Mistakes in Bank Guarantee Practice
The most common mistake by beneficiaries is missing the expiry date or submitting a defective demand. A demand that does not comply with the guarantee wording may be rejected.
The most common mistake by applicants is assuming that the bank will refuse payment because the underlying contract is disputed. In first demand guarantees, ordinary disputes usually do not stop payment.
The most common mistake by banks is using unclear wording or paying despite obvious defects in the demand.
Another common mistake is failing to distinguish between an injunction against payment and a later claim for recovery. Preventing payment requires strong and urgent evidence. Recovering payment after encashment may allow broader examination of the underlying contract.
27. Why Legal Support Is Important
Bank guarantee disputes in Turkey require urgent, precise and strategic legal action. A Turkish banking and finance lawyer may assist with drafting guarantee letters, reviewing payment demands, filing injunction requests, defending beneficiaries, advising banks, negotiating release of guarantees, filing recovery lawsuits and coordinating arbitration or court proceedings.
Legal support is especially important because timing is critical. Once the bank pays, the applicant’s position changes significantly. A party seeking to prevent payment must act before encashment. A beneficiary seeking payment must ensure strict compliance with the guarantee wording.
Conclusion
Bank guarantees in Turkey are powerful security instruments that provide liquidity, confidence and commercial protection. They are widely used in construction, public procurement, trade, leasing, finance, infrastructure and commercial transactions.
Their most important legal feature is independence from the underlying contract. This independence allows beneficiaries to demand payment quickly, especially under first demand guarantees. However, independence is not absolute. Turkish law recognizes abuse of rights, fraud and bad faith exceptions in exceptional cases supported by clear evidence.
For beneficiaries, the key is to obtain a clear, enforceable and timely guarantee. For applicants, the key is to understand payment risk before issuance and act quickly if a wrongful demand is made. For banks, the key is to draft precisely, manage credit exposure and examine demands according to the guarantee wording.
Bank guarantee disputes require careful analysis of the guarantee text, underlying contract, demand procedure, expiry date, evidence, injunction standards and dispute resolution clauses. In Turkish banking and finance law, a bank guarantee is not merely a standard form document. It is a sophisticated legal instrument that can determine the financial outcome of major commercial disputes.
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