Banking and Finance Arbitration in Turkey: Loan, Security and Investment Disputes

Introduction

Banking and finance transactions frequently involve substantial amounts, multiple contractual documents, sophisticated security packages and parties established in different jurisdictions. A single financing structure may include a facility agreement, guarantees, mortgages, share pledges, account pledges, assignments of receivables, intercreditor arrangements, hedging agreements and sponsor-support undertakings.

When a dispute arises, the parties may disagree not only about whether the borrower failed to make payment, but also about interest calculations, financial covenants, acceleration, enforcement of security, the validity of guarantees, distribution of enforcement proceeds or the lender’s exercise of contractual discretion.

For cross-border and complex corporate financing transactions, arbitration may provide a specialist and comparatively flexible alternative to ordinary court litigation. The parties may select experienced banking and finance arbitrators, determine the legal seat and language, protect commercially sensitive information and obtain an award capable of international enforcement.

However, banking and finance arbitration in Turkey requires careful legal planning. Not every banking-related issue can be referred to arbitration. Private-law disputes arising from loan agreements and commercial security documents are generally more suitable for arbitration, while regulatory sanctions, banking licences, public-law supervision and matters outside the parties’ control remain within the authority of courts or administrative bodies.

Financing disputes also raise important enforcement questions. An arbitral tribunal may determine that a loan is due and payable, but the compulsory attachment of bank accounts, sale of pledged property or registration of rights may still require Turkish courts, enforcement offices and registries.

This comprehensive guide examines banking and finance arbitration in Türkiye, including:

• Corporate and syndicated loan disputes;
• Project and acquisition financing;
• Financial covenants and events of default;
• Interest, fees and currency claims;
• Suretyships and corporate guarantees;
• Independent bank guarantees;
• Mortgages, share pledges and movable security;
• Investment services and capital markets disputes;
• Consumer and retail investor limitations;
• Interim measures;
• Annulment and enforcement of arbitral awards.

What Is Banking and Finance Arbitration?

Banking and finance arbitration is the resolution of disputes arising from financing, investment and related security arrangements by a sole arbitrator or arbitral tribunal instead of national courts.

The tribunal’s jurisdiction usually derives from a written arbitration agreement contained in:

• A facility agreement;
• A syndicated loan agreement;
• A project finance agreement;
• A bond subscription agreement;
• A guarantee;
• An intercreditor agreement;
• A derivatives or hedging contract;
• An investment services agreement;
• A restructuring agreement;
• A separate submission agreement signed after the dispute arises.

A banking arbitration may involve a dispute between:

• A bank and corporate borrower;
• Several lenders and a borrower;
• A security agent and guarantor;
• A project company and financing institution;
• A sponsor and lender;
• An investment firm and professional investor;
• Financial institutions participating in a syndicate;
• A Turkish borrower and foreign lender.

The arbitration normally determines private contractual rights. It may decide whether the borrower is in default, whether acceleration was valid, whether fees are payable or whether a guarantor is contractually liable.

The tribunal does not replace the Banking Regulation and Supervision Agency, the Capital Markets Board, Borsa İstanbul, Turkish courts or enforcement offices in the exercise of their statutory and public-law powers.

Why Do Financial Institutions and Borrowers Choose Arbitration?

International financing transactions frequently connect several legal systems.

A Turkish company may obtain a loan from an international syndicate consisting of banks in London, Frankfurt, Dubai and Istanbul. The facility may be governed by foreign law, while the borrower’s assets and security are located in Türkiye.

Arbitration allows the parties to establish a neutral dispute resolution mechanism instead of requiring all claims to be determined before the courts of one lender’s or borrower’s home jurisdiction.

The parties may choose:

• A neutral legal seat;
• The substantive governing law;
• Institutional or ad hoc arbitration;
• A sole arbitrator or three-member tribunal;
• Arbitrators experienced in finance;
• English or another language;
• Confidentiality arrangements;
• A focused document-production procedure;
• Online or in-person hearings.

Financial disputes often require interpretation of technical contractual concepts, including financial indebtedness, permitted security, material adverse effect, cross-default, break costs, benchmark replacement and debt-service coverage ratios.

The ability to appoint arbitrators familiar with these concepts may reduce the time required to explain the commercial structure and allow the tribunal to focus on the genuine legal and accounting issues.

Turkish Legal Framework

Banking and finance arbitration connected with Türkiye may involve several different legislative regimes.

The principal sources include:

• Turkish International Arbitration Law No. 4686;
• Articles 407 to 444 of the Turkish Code of Civil Procedure;
• Turkish Code of Obligations No. 6098;
• Turkish Commercial Code No. 6102;
• Banking Law No. 5411;
• Capital Markets Law No. 6362;
• Law No. 6750 on Movable Pledges in Commercial Transactions;
• Consumer Protection Law No. 6502;
• Enforcement and Bankruptcy Law;
• The selected institutional arbitration rules.

The Banking Regulation and Supervision Agency’s legislation portal identifies Banking Law No. 5411, Capital Markets Law No. 6362, the Bank Cards and Credit Cards Law and the legislation regulating financial leasing, factoring and financing companies among the principal statutes governing the Turkish banking and finance sector.

Domestic arbitration

The domestic arbitration provisions of the Turkish Code of Civil Procedure apply where the arbitration is seated in Türkiye and the dispute does not contain the foreign element defined by the International Arbitration Law.

Article 408 provides that disputes concerning rights in rem over immovable property and matters that are not subject to the parties’ free disposition are not arbitrable. Article 412 recognises written agreements referring all or part of contractual or non-contractual disputes to arbitration.

International arbitration

The International Arbitration Law principally applies where the dispute contains a statutory foreign element and the seat is in Türkiye.

A corporate loan between a Turkish borrower and foreign bank will normally contain a foreign element. A financing arrangement between Turkish parties may also qualify where foreign capital, cross-border performance or another sufficient international connection exists.

The applicable arbitration statute should be identified separately from the governing law of the facility agreement.

For example, the parties may select:

• English law for the facility agreement;
• Istanbul as the seat;
• ISTAC Rules for administration;
• English as the arbitration language.

In that case, Turkish arbitration legislation governs the procedural legal framework connected with the seat, while English law governs the substantive financing obligations.

Are Banking and Finance Disputes Arbitrable in Türkiye?

Most private commercial disputes arising from corporate financing agreements may be referred to arbitration where a valid written arbitration agreement exists.

Potentially arbitrable disputes include:

• Repayment of principal;
• Contractual interest;
• Default interest;
• Arrangement and commitment fees;
• Financial covenant breaches;
• Events of default;
• Acceleration;
• Prepayment fees;
• Break costs;
• Tax gross-up;
• Indemnification;
• Corporate guarantee liability;
• Intercreditor distribution;
• Contractual obligations concerning security.

Arbitrability becomes more complicated where the requested decision concerns:

• A banking licence;
• A regulatory sanction;
• A Capital Markets Board decision;
• A mandatory administrative measure;
• Bankruptcy status;
• Public-law enforcement powers;
• Rights in rem over Turkish immovable property;
• Rights directly affecting non-parties.

An arbitral tribunal may decide whether the borrower contractually owes a debt secured by a mortgage. However, the tribunal should not be assumed to have authority to create, cancel or determine with erga omnes effect a right in rem over Turkish immovable property, because Article 408 excludes disputes arising from such rights from arbitration.

Similarly, a private contractual disagreement involving a regulated bank may be arbitrable, while the legality of a regulatory fine or licence decision is normally a public-law matter for the competent administrative authorities and courts.

Corporate Loan Disputes

The most common banking arbitration arises from a corporate facility agreement.

A lender may claim that:

• Repayment instalments were not made;
• Interest remains unpaid;
• A financial covenant was breached;
• Information was withheld;
• Security was not perfected;
• A representation was incorrect;
• Another debt was accelerated;
• Insolvency proceedings were commenced.

The borrower may respond that:

• The lender miscalculated the debt;
• The alleged default was cured;
• The required notice was not given;
• The lender waived the breach;
• Acceleration was disproportionate or contractually invalid;
• The interest calculation is incorrect;
• The lender breached a drawdown obligation;
• The facility was wrongfully cancelled.

The tribunal must begin with the contractual language.

A well-drafted facility agreement should define:

• Utilisation conditions;
• Interest periods;
• Benchmarks and margins;
• Default interest;
• Repayment dates;
• Financial covenants;
• Representations;
• Events of default;
• Grace periods;
• Acceleration procedures;
• Notice requirements;
• Set-off rights.

General allegations that the borrower’s financial position deteriorated will not necessarily establish an event of default if the contract requires a more specific condition.

Syndicated Loan Arbitration

A syndicated loan involves several lenders participating through a coordinated contractual structure.

The documentation may appoint:

• A facility agent;
• A security agent;
• An account bank;
• A calculation agent;
• Majority lenders;
• Arrangers and coordinators.

Disputes may concern:

• Whether the agent acted within its authority;
• Whether majority-lender instructions were obtained;
• Allocation of payments;
• Transfers of lender participation;
• Confidentiality;
• Voting thresholds;
• Enforcement proceeds;
• Unequal treatment of lenders;
• Amendments or waivers;
• Liability of the agent.

The arbitration clause should identify which parties are bound.

A clause contained only in the facility agreement may not automatically bind:

• A guarantor;
• A security provider;
• A hedging counterparty;
• A later assignee;
• A third-party account bank.

The transfer provisions should require incoming lenders and transferees to accede to the dispute resolution arrangement.

The documents should also address how arbitrators will be appointed where numerous lenders or respondents participate. Without a coordinated mechanism, one side may receive greater influence over tribunal formation.

Project Finance Arbitration

Project finance is commonly used in energy, infrastructure, transportation, healthcare and industrial investments.

The lender’s repayment depends primarily on the project’s revenue rather than the sponsor’s general creditworthiness.

The financing package may include:

• Senior facility agreements;
• Sponsor support;
• Shareholder loans;
• Direct agreements;
• Security documents;
• Account-control arrangements;
• Hedging agreements;
• Engineering and construction contracts;
• Operation and maintenance contracts.

Project finance disputes may concern:

• Failure to satisfy conditions precedent;
• Cost overruns;
• Completion tests;
• Delayed commercial operation;
• Debt-service coverage ratios;
• Cash waterfall rules;
• Reserve accounts;
• Mandatory prepayment;
• Distribution restrictions;
• Sponsor equity obligations;
• Enforcement of direct agreements.

These disputes may require engineering and financial expertise.

For example, whether a completion test was satisfied may depend on technical performance, permits, production capacity and financial modelling. The tribunal may need evidence from engineers, accountants, financial modellers and industry specialists.

Acquisition Finance Disputes

Acquisition finance supports the purchase of shares or a business.

The lender may finance:

• The purchase price;
• Transaction costs;
• Refinancing of target debt;
• Post-closing working capital.

Disputes may arise where:

• The acquisition does not close;
• Regulatory approval is refused;
• The purchase price changes;
• The target’s warranties prove inaccurate;
• The borrower cannot grant anticipated security;
• Financial assistance restrictions become relevant;
• The target’s performance deteriorates;
• The lender refuses utilisation.

The facility agreement should coordinate with the share purchase agreement.

Definitions such as “Material Adverse Effect,” “Acquisition Documents,” “Permitted Amendments” and “Closing Date” should be consistent across the transaction documents.

A buyer may succeed against the seller in M&A arbitration while separately disputing with its lender over whether financing conditions were satisfied. Inconsistent dispute resolution clauses may force the buyer to conduct parallel proceedings.

Interest, Fees and Foreign Currency Claims

Financial disputes frequently concern the amount of the debt rather than the existence of the loan.

The tribunal may need to determine:

• Applicable interest rate;
• Margin;
• Benchmark replacement;
• Default interest;
• Compounding;
• Day-count convention;
• Interest-period dates;
• Commitment fees;
• Agency fees;
• Early repayment charges;
• Break funding costs.

The operative part of the award should identify clearly:

• Principal amount;
• Currency;
• Interest rate;
• Interest commencement date;
• Whether interest is simple or compound;
• Applicable payment date;
• Treatment of costs.

Ambiguous awards may create enforcement problems.

Foreign currency rules may also involve mandatory Turkish legislation and administrative regulations. The fact that the contract contains an arbitration clause does not authorise the tribunal to disregard mandatory currency, sanctions, tax or banking rules applicable to the transaction.

Because foreign currency regulations can change, the relevant rules must be reviewed according to the transaction date, borrower status, lender status and purpose of the loan.

Financial Covenants and Events of Default

Financial covenants provide lenders with early-warning protection.

Common covenants include:

• Leverage ratio;
• Debt-service coverage ratio;
• Interest coverage ratio;
• Loan-to-value ratio;
• Minimum liquidity;
• Net worth;
• Capital expenditure limits.

Disputes may arise over:

• Calculation methodology;
• Accounting standards;
• Consolidation;
• Exceptional items;
• Foreign exchange gains or losses;
• Treatment of shareholder loans;
• Permitted add-backs;
• Valuation of assets.

The agreement should establish a hierarchy of accounting rules.

For example:

1. Express contractual definitions;
2. Agreed accounting principles;
3. Consistency with prior financial statements;
4. Applicable accounting standards.

A tribunal should not simply rely on a party’s financial statements where the facility agreement contains a specialised contractual calculation.

Guarantees and Suretyships

Financing transactions frequently include guarantees from shareholders, parent companies, sponsors or directors.

The legal character of the security is critical.

A document described as a “guarantee” may legally operate as:

• A suretyship;
• An independent guarantee;
• A debt assumption;
• A co-debtor undertaking;
• Another personal security.

Different validity and enforcement rules may apply.

Under Article 583 of the Turkish Code of Obligations, a suretyship must comply with written-form requirements and state the maximum amount and date. Certain information must be written by the surety personally. Article 584 regulates spousal consent and statutory exceptions, while Article 603 extends provisions concerning form, capacity and spousal consent to other personal security arrangements given by natural persons under another name.

A finance arbitration involving a natural-person guarantor should therefore examine:

• The legal classification of the undertaking;
• Maximum liability;
• Date;
• Handwritten requirements;
• Spousal consent;
• Corporate or commercial exceptions;
• Authority of the signatory.

The parties cannot avoid mandatory surety protections merely by labelling a document an “independent guarantee” if its substantive legal character is different.

Independent Bank Guarantees and Letters of Credit

Bank guarantees are widely used in construction, infrastructure, international trade and project finance.

A bank may undertake to pay the beneficiary upon presentation of a complying demand, independently from the underlying contract.

Disputes may concern:

• Whether the demand complied with the guarantee;
• Whether required documents were presented;
• Expiry;
• Extension;
• Fraud or abuse;
• Whether the guarantee was conditional;
• Interpretation of demand wording;
• Counter-guarantees.

The arbitration clause in the underlying contract does not automatically bind the issuing bank.

For example, an EPC contract between employer and contractor may contain ISTAC arbitration. A bank issuing a performance guarantee is not ordinarily a party to that arbitration agreement merely because the guarantee supports the EPC contract.

The guarantee should contain its own dispute resolution provision where the parties want disputes between the beneficiary and bank to be arbitrated.

Court assistance may also be essential where an urgent injunction is sought to prevent payment before the arbitral tribunal is constituted.

Mortgages over Immovable Property

Real estate is commonly used as security for commercial loans.

The financing documents may create a mortgage over:

• Land;
• Factories;
• Hotels;
• Commercial buildings;
• Energy facilities;
• Development property.

The distinction between the underlying debt and the proprietary security right is essential.

The tribunal may ordinarily determine contractual questions such as:

• Whether the loan is due;
• Whether the borrower breached a covenant;
• Whether the lender must release the mortgage after payment;
• Whether a contractual indemnity is payable.

However, disputes directly concerning rights in rem over Turkish immovable property fall within the non-arbitrability restriction in Article 408. Creation, amendment, cancellation and compulsory enforcement of mortgage rights may require the relevant official deed, land registry, court or enforcement process.

The arbitration clause should not promise a remedy that the tribunal cannot implement effectively.

Movable Pledges

Commercial loans may be secured by movable assets without transferring possession to the lender.

Türkiye regulates registered commercial movable pledges under Law No. 6750 and related regulations. The Ministry of Trade identifies the law, the Pledged Movable Registry Regulation and the regulations governing creation, valuation and post-default rights as the principal legislation in this area.

A registered movable pledge may concern assets such as:

• Machinery;
• Equipment;
• Inventory;
• Receivables;
• Intellectual property rights;
• Commercial projects;
• Raw materials;
• Rental income.

Law No. 6750 establishes specific post-default routes. Article 14 includes remedies involving applications to the enforcement office, transfer to asset management companies and the exercise of leasing or licensing rights in qualifying assets. Where those routes do not produce collection, general enforcement rules apply.

An arbitral tribunal may determine whether a secured obligation exists or whether the creditor breached the pledge agreement. However, statutory enforcement, registry notification and compulsory transfer may still require official authorities.

Share Pledges

Shares in a Turkish company are often pledged in acquisition and project finance.

Disputes may concern:

• Valid creation of the pledge;
• Registration in the share ledger;
• Possession of share certificates;
• Voting rights;
• Dividend rights;
• Enforcement notices;
• Valuation;
• Sale of pledged shares;
• Release after repayment.

The applicable formalities depend on:

• Whether the company is a joint stock or limited liability company;
• Whether shares are certificated;
• Whether they are registered or bearer shares;
• The articles of association;
• Capital markets legislation;
• The terms of the pledge agreement.

The tribunal can determine contractual liability between signatories, but implementation against the company, registry or other shareholders may require separate corporate and enforcement procedures.

Account Pledges, Cash Collateral and Set-Off

Lenders frequently require control over project or operating accounts.

The documentation may establish:

• Revenue accounts;
• Debt-service accounts;
• Reserve accounts;
• Collection accounts;
• Cash collateral;
• Blocked accounts.

Disputes may arise over:

• Whether the lender was entitled to block withdrawals;
• Application of cash to the debt;
• Set-off;
• Priority between creditors;
• Release conditions;
• Interest on blocked funds;
• Compliance with the cash waterfall.

Where the account bank is not the lender, the account bank should be a party to the relevant control or security agreement. It should also be bound by a compatible dispute resolution clause if arbitration is intended.

Otherwise, the tribunal may determine the borrower’s and lender’s rights but lack jurisdiction over the bank holding the account.

Assignment of Receivables and Factoring

Receivables may be assigned as security or sold under factoring arrangements.

Disputes may concern:

• Whether an assignment was absolute or for security;
• Notification to the debtor;
• Eligibility of receivables;
• Dilution;
• Recourse;
• Collections;
• Priority;
• Representations concerning invoices;
• Fraudulent or disputed receivables.

The underlying account debtor may not be bound by the arbitration clause in the financing agreement.

For example, a borrower may assign customer receivables to a lender. The customer’s original sale contract may provide for Turkish courts, while the assignment agreement provides for arbitration.

The transaction should therefore distinguish between:

• The lender’s contractual claims against the assignor;
• The lender’s rights against the account debtor;
• Priority disputes with other creditors.

Derivatives and Hedging Disputes

Borrowers and financial institutions may use derivatives to manage interest-rate, currency or commodity risks.

Common transactions include:

• Interest-rate swaps;
• Currency swaps;
• Forward contracts;
• Options;
• Commodity hedges;
• Cross-currency swaps.

Disputes may concern:

• Early termination;
• Valuation;
• Close-out amount;
• Market quotation;
• Calculation-agent discretion;
• Misrepresentation;
• Suitability;
• Collateral;
• Set-off and netting.

These disputes often require expert financial evidence.

A valuation expert may need to reconstruct:

• Relevant yield curves;
• Market data;
• Discount factors;
• Replacement transaction costs;
• Credit adjustments;
• Calculation dates.

The arbitration clause in the derivatives master agreement should be coordinated with the facility and intercreditor documents.

A financing structure may otherwise create one proceeding for the loan and another for the hedge despite both arising from the same default.

Investment Services and Capital Markets Disputes

Banking and finance arbitration may also concern disputes between investment institutions and professional or institutional investors.

Potential claims include:

• Unauthorised transactions;
• Failure to execute instructions;
• Incorrect pricing;
• Custody losses;
• Portfolio management;
• Investment advice;
• Margin calls;
• Derivative positions;
• Misrepresentation;
• Breach of disclosure duties.

Capital market activities in Türkiye are regulated under Capital Markets Law No. 6362 and related Capital Markets Board legislation. The regulator maintains a dedicated legislation system containing the Capital Markets Law and secondary rules.

Certain exchange transaction disputes may also fall within Borsa İstanbul’s statutory dispute process. Borsa İstanbul states that disputes arising from exchange transactions between authorised participants, and qualifying disputes between participants and customers upon customer application, may be determined through its Management Board with the assistance of the Dispute Committee. Resort to arbitration or court proceedings results in removal of the Borsa file, and the same dispute cannot later be resubmitted through that mechanism.

A financial institution or investor should therefore determine:

• Whether a Borsa procedure is available;
• Whether contractual arbitration exists;
• Whether the investor is a consumer;
• Whether a mandatory regulatory remedy applies;
• Whether commencing one route affects another.

Regulatory breaches may be relevant evidence in private arbitration, but the tribunal does not exercise the Capital Markets Board’s public enforcement authority.

Participation Finance Disputes

Türkiye also has participation banks and interest-free finance products.

Transactions may be structured through:

• Murabaha-style asset financing;
• Financial leasing;
• Profit-and-loss participation;
• Sukuk or lease certificates;
• Partnership-based financing;
• Commodity transactions.

Disputes may concern:

• Purchase and resale obligations;
• Profit calculation;
• Asset ownership;
• Lease payments;
• Early termination;
• Sharia governance representations;
• Default consequences;
• Security enforcement.

The tribunal must apply the governing law and contractual structure rather than treating the transaction as an ordinary interest-bearing loan where the documents create different obligations.

The parties should specify whether any participation-finance principles are incorporated contractually and how they interact with mandatory Turkish law.

Consumer Loans and Retail Banking

Corporate banking arbitration should be distinguished from consumer banking disputes.

Consumer Protection Law No. 6502 defines consumer credit agreements and establishes special protections concerning matters such as information, withdrawal, early payment and default. The Ministry of Trade continues to publish consumer-credit guidance and legislation for financial consumers.

Consumer disputes may fall within the jurisdiction of consumer arbitration committees or consumer courts under the statutory system. Consumer courts are expressly assigned disputes arising from consumer transactions and practices.

Pre-dispute arbitration clauses in standard-form consumer banking agreements therefore require particularly careful analysis.

Relevant issues include:

• Whether the term was individually negotiated;
• Whether it creates an unfair imbalance;
• Whether mandatory consumer remedies apply;
• Whether the consumer understood the effect of arbitration;
• Whether costs restrict effective access to justice;
• Whether the right is legally disposable.

A clause suitable for a syndicated corporate loan should not be copied into a retail consumer credit agreement without separate legal review.

Multi-Contract and Multi-Party Risks

Banking transactions commonly use numerous documents with different parties.

A typical financing may include:

• Borrower;
• Parent guarantor;
• Individual guarantors;
• Security providers;
• Lenders;
• Facility agent;
• Security agent;
• Account bank;
• Hedge counterparties;
• Sponsors.

The transaction may become procedurally fragmented if:

• The facility agreement refers to ISTAC arbitration;
• The guarantee refers to Turkish courts;
• The mortgage deed refers to enforcement offices;
• The hedge agreement refers to foreign courts;
• The account-control agreement is silent.

Arbitration clauses should be coordinated where overlapping disputes are foreseeable.

The documents should address:

• Joinder;
• Consolidation;
• Assignment;
• Accession;
• Tribunal appointment;
• Service;
• Parallel proceedings;
• Relationship with security enforcement.

The parties should also clarify that court or enforcement proceedings used to preserve or realise security do not constitute a waiver of arbitration concerning the underlying contractual dispute.

Drafting the Arbitration Clause

ISTAC publishes a model clause under which disputes arising out of or connected with the contract are finally resolved under the ISTAC Arbitration Rules. ISTAC recommends separately specifying the seat, language, number of arbitrators and law governing the merits.

An expanded finance arbitration clause may provide:

Any dispute, controversy or claim arising out of or in connection with this Agreement, including any dispute concerning its formation, validity, interpretation, performance, breach, acceleration, termination, calculation of amounts due, security obligations or consequences of termination, shall be finally resolved under the Istanbul Arbitration Centre Arbitration Rules.

The seat of arbitration shall be Istanbul, Türkiye. The tribunal shall consist of three arbitrators. The language of arbitration shall be English. Turkish law shall govern the merits of the dispute.

The clause should also consider:

• Emergency arbitrator rules;
• Fast-track proceedings;
• Consolidation;
• Joinder;
• Confidentiality;
• Service by electronic means;
• Court applications for interim protection;
• Enforcement of security;
• Governing law of the arbitration agreement.

Interim Measures

Urgent protection is often essential in finance disputes.

A lender may seek to prevent:

• Transfer of assets;
• Dissipation of receivables;
• Disposal of pledged shares;
• Withdrawal of secured funds;
• Destruction of financial records;
• Release of collateral.

A borrower may seek to prevent:

• An allegedly invalid guarantee call;
• Wrongful acceleration;
• Release of confidential information;
• Sale of security before contractual conditions are satisfied.

Under Article 414 of the Code of Civil Procedure, a tribunal may order interim measures or evidence preservation, may require security and may request judicial enforcement of qualifying measures. Court assistance is available where the tribunal cannot act in time or effectively, subject to the statutory conditions.

Article 6 of the International Arbitration Law confirms that applying to a court for an interim injunction or interim attachment before or during arbitration does not violate the arbitration agreement. It also limits arbitrators’ authority where a measure requires coercive enforcement, action by public authorities or binding effect against third parties.

Court relief may therefore be more effective where the requested measure concerns:

• A bank not bound by the arbitration agreement;
• A land or commercial registry;
• Compulsory attachment;
• A third-party receivable;
• An ex parte application;
• Official sale of collateral.

Evidence in Banking Arbitration

Banking disputes are heavily document-based.

Important evidence may include:

• Facility agreements;
• Amendments and waivers;
• Drawdown requests;
• Account statements;
• SWIFT messages;
• Payment records;
• Financial statements;
• Compliance certificates;
• Default notices;
• Acceleration notices;
• Security documents;
• Valuation reports;
• Lender voting records;
• Agent communications;
• Board resolutions.

Electronic evidence can be decisive.

Metadata may establish:

• When a notice was sent;
• Whether it was received;
• Who approved a waiver;
• Whether a calculation was altered;
• Which version of a financial model was used.

The parties should preserve records immediately once a dispute becomes foreseeable.

Banks must also consider confidentiality, personal data and bank-secrecy obligations when producing documents. A tribunal may use redaction, limited-access orders, confidential annexes and secure data rooms to balance evidentiary needs against legal confidentiality duties.

Expert Evidence

Experts may be required for:

• Interest calculation;
• Derivative valuation;
• Financial covenant testing;
• Project revenue modelling;
• Security valuation;
• Damages;
• Foreign banking law;
• Accounting standards.

The expert should distinguish between legal interpretation and numerical calculation.

For example, the tribunal decides what “Financial Indebtedness” means under the agreement. The expert then applies that interpretation to the accounts.

An expert should not assume the legal conclusion the party is trying to prove.

The report should disclose:

• Data sources;
• Methodology;
• Assumptions;
• Alternative scenarios;
• Sensitivity analysis;
• Treatment of missing information.

Remedies

A banking and finance tribunal may grant, depending on the agreement and governing law:

• Payment of principal;
• Contractual interest;
• Default interest;
• Fees;
• Indemnification;
• Damages;
• Declaratory relief;
• Release of security;
• Performance of contractual obligations;
• Arbitration costs.

The tribunal must remain within the arbitration agreement and cannot exercise coercive public enforcement powers.

An award declaring a debt payable does not itself attach bank accounts or sell collateral. The creditor may need to present the award to the relevant enforcement authority.

Annulment of Turkey-Seated Awards

A Turkey-seated arbitral award is not subject to an ordinary appeal on the merits.

Under Article 439 of the Code of Civil Procedure, a domestic award may be challenged only through an action to set aside on limited grounds, including:

• Invalid arbitration agreement;
• Improper tribunal constitution;
• Excess of jurisdiction;
• Material procedural irregularity;
• Violation of equality or the right to be heard;
• Non-arbitrability;
• Public policy.

The International Arbitration Law contains a comparable annulment regime for qualifying international awards. Article 15 also identifies invalidity, jurisdictional excess, procedural defects, non-arbitrability and public policy among the limited grounds.

The annulment court should not normally recalculate the loan, reinterpret a financial covenant or decide whether the tribunal preferred the correct expert.

International Enforcement

A banking award has commercial value only if it can be enforced against assets.

The New York Convention establishes the international framework for recognition of arbitration agreements and enforcement of foreign and non-domestic arbitral awards in contracting states. Its refusal grounds are limited and do not provide a general appeal on the merits.

Potential enforcement assets may include:

• Bank accounts;
• Receivables;
• Company shares;
• Machinery;
• Vehicles;
• Real estate;
• Dividends;
• Intellectual property.

The creditor should analyse assets before commencing arbitration.

Security should also be reviewed separately. An award against the borrower does not necessarily establish direct enforcement rights against a guarantor or security provider that was not bound by the arbitration agreement.

Practical Checklist

Before including an arbitration clause in a financing transaction, the parties should determine:

1. Whether the borrower and lenders are commercial or consumer parties;
2. Whether the dispute will be domestic or international;
3. Which law governs the facility;
4. Which law governs the arbitration agreement;
5. The seat and language;
6. Whether one or three arbitrators are appropriate;
7. Whether all guarantees and security providers are bound;
8. Whether joinder and consolidation may be needed;
9. Whether the agent may commence arbitration for all lenders;
10. Whether security enforcement requires separate proceedings;
11. Whether emergency protection is available;
12. Whether related documents contain compatible clauses;
13. Whether incoming lenders must accede;
14. How confidential banking information will be protected;
15. Where the award debtor owns assets.

Frequently Asked Questions

Can a bank loan dispute be arbitrated in Türkiye?

Corporate and commercial loan disputes may generally be arbitrated where a valid written arbitration agreement exists and the claim concerns rights subject to the parties’ control.

Can an arbitral tribunal enforce a mortgage?

The tribunal may determine the underlying contractual debt, but compulsory mortgage enforcement and rights in rem over Turkish immovable property remain subject to mandatory registry, court and enforcement procedures.

Can a guarantor be included in the arbitration?

Only where the guarantor is bound by the relevant arbitration agreement. Signing the facility agreement or a guarantee containing a compatible arbitration clause may establish consent.

Is every guarantee valid under Turkish law?

No. The legal character and formal requirements must be reviewed. Suretyships and personal security given by natural persons may be subject to mandatory written form, maximum amount, date, handwriting and spousal-consent rules.

Does the arbitration clause in the underlying contract bind the issuing bank?

Not automatically. A bank issuing a guarantee or letter of credit is normally bound only if it consented to arbitration through the guarantee or another agreement.

Can a lender seek interim attachment despite arbitration?

Yes. An application for interim judicial protection does not necessarily violate or waive the arbitration agreement.

Can consumer loan disputes be arbitrated?

Consumer banking disputes require separate analysis under mandatory consumer legislation, unfair-term rules and the statutory consumer dispute system. A corporate finance clause should not be used automatically in a retail consumer agreement.

Can investment firm disputes be referred to arbitration?

Certain contractual disputes with professional or institutional investors may be arbitrable. However, Borsa İstanbul procedures, Capital Markets Board rules, consumer protection and public regulatory powers must be considered separately.

Is ISTAC suitable for banking disputes?

ISTAC may administer banking and finance disputes where the parties include a valid clause referring the dispute to the ISTAC Arbitration Rules. The clause should specify the seat, language, tribunal size and governing law.

Can a foreign banking award be enforced in Türkiye?

A qualifying foreign arbitral award may be recognised and enforced under the New York Convention or applicable Turkish private international law, subject to limited refusal grounds.

Conclusion

Banking and finance arbitration in Turkey can provide an effective dispute resolution mechanism for corporate loans, syndicated facilities, project finance, guarantees, security documents, derivatives and professional investment services.

Its principal advantages include:

• Selection of finance-experienced arbitrators;
• Neutrality in cross-border transactions;
• Choice of language and seat;
• Procedural flexibility;
• Commercial confidentiality;
• International enforceability.

However, finance arbitration must be designed in coordination with the security and regulatory framework.

A tribunal can determine whether a borrower owes principal and interest, whether acceleration was valid or whether a guarantor breached its contractual undertaking. It cannot automatically exercise the coercive powers of Turkish enforcement offices, land registries, commercial registries or regulatory authorities.

The transaction documents should distinguish among:

• Determination of contractual liability;
• Perfection of security;
• Enforcement of collateral;
• Public-law regulatory matters;
• Rights affecting third parties.

All facility, guarantee, pledge, intercreditor, hedging and account-control documents should contain compatible dispute resolution provisions. Assignment and accession documents should preserve the arbitration agreement when lenders or participants change.

Natural-person security requires particular care. Turkish law imposes mandatory formal requirements on suretyships and extends certain protections to other personal securities given under another name.

Consumer credit and retail investment disputes must also be separated from sophisticated corporate finance arbitration because mandatory consumer and regulatory procedures may apply.

Interim protection should be planned before a default occurs. Court proceedings may be necessary to attach assets, bind third parties or implement registry measures even where the merits are reserved for arbitration.

Finally, enforcement strategy should begin at the drafting and pre-dispute stages. A favourable award is only commercially effective where the debtor or guarantor has identifiable and recoverable assets.

For banks, borrowers, sponsors, investment institutions and international lenders involved in Turkish financing transactions, specialised arbitration counsel can assist with transaction drafting, restructuring, interim protection, arbitral proceedings and enforcement of financial awards.