Arbitrating at ISTAC: A Foreign Business Guide to the Istanbul Arbitration Centre

If your company is contracting with a Turkish counterparty and wants a neutral, private way to resolve disputes, the Istanbul Arbitration Centre (ISTAC) is one option worth understanding. ISTAC is an independent Turkish arbitration institution that administers cases under its own Arbitration Rules, with a Fast Track procedure for smaller or urgent matters and an emergency arbitrator for interim relief. This guide explains what ISTAC is, how its procedures work, how costs are structured at a high level, and why foreign businesses sometimes choose Istanbul as the seat of arbitration rather than litigating in court.

What is ISTAC?

ISTAC, the Istanbul Arbitration Centre, is an independent arbitration institution based in Istanbul. It administers arbitration and mediation proceedings under its own published rules. In plain terms, it provides the framework, the case-management staff, and the procedural rules that let two companies resolve a dispute privately before one or more arbitrators, rather than in the public court system.

An arbitration institution does not decide your case itself. The arbitrators decide. The institution organises the process: it helps confirm the tribunal, checks that deadlines are met, manages the fees, and applies its rules so the proceedings run in an orderly way. ISTAC is independent of the courts and administers both domestic disputes and disputes with an international (cross-border) element.

ISTAC was established to give parties — including foreign businesses trading with Turkish companies — a recognised local venue for arbitration (tahkim, the Turkish word for arbitration) seated in Türkiye. It publishes its own Arbitration and Mediation Rules, maintains a model arbitration clause, and offers proceedings that can be conducted in languages other than Turkish.

The legal framework: which law governs ISTAC arbitration?

An arbitration institution operates inside a country's arbitration law, not instead of it. When the seat of arbitration is Türkiye, Turkish arbitration law governs the proceedings and supervises matters such as the validity of the arbitration agreement and any later challenge to the award.

• International Arbitration Act (Milletlerarası Tahkim Kanunu No. 4686) — applies to arbitrations seated in Türkiye that carry a foreign element, for example where the parties are based in different countries or the subject matter crosses borders. Most ISTAC cases involving a foreign business will sit here.
• Code of Civil Procedure (Hukuk Muhakemeleri Kanunu, HMK No. 6100) — contains the domestic arbitration provisions that apply to purely domestic disputes seated in Türkiye that lack a foreign element.
• Act on Private International and Procedural Law (Milletlerarası Özel Hukuk ve Usul Hukuku Hakkında Kanun, MÖHUK No. 5718) — governs how a foreign arbitral award is recognised and enforced (tanıma ve tenfiz) inside Türkiye.
• 1958 New York Convention — the international treaty under which a Turkish-seated award is recognised and enforced in other member states, and vice versa. Türkiye is a party to it.

The practical point: choosing ISTAC means choosing Türkiye as the seat, which means Turkish arbitration law forms the backdrop. The ISTAC Rules then fill in the day-to-day procedure within that framework.

How the ISTAC Arbitration Rules work

The ISTAC Arbitration Rules are the procedural rulebook that applies once you agree to arbitrate at ISTAC. They cover the journey from the first filing to the final award. At a high level, the process looks like this:

• Request for Arbitration. The party starting the case (the claimant) files a request describing the dispute and the relief sought. The other side (the respondent) answers.
• Constituting the tribunal. The parties help select the arbitrator or arbitrators. Depending on the value and complexity of the case, a dispute may be heard by a sole arbitrator or by a panel of three. Party participation in choosing the decision-maker is one of arbitration's defining features.
• Terms of reference and timetable. The tribunal sets out the issues and a procedural calendar, so both sides know what happens and when.
• Written submissions, evidence and a hearing. Each side presents its case in writing and, where needed, at a hearing. Proceedings are private.
• The award. The tribunal issues a written, reasoned arbitral award that binds the parties.

Two features matter a great deal to foreign businesses. First, language: ISTAC proceedings can be conducted in a language the parties choose, which often means English rather than Turkish. Second, confidentiality: arbitration is private, unlike a public court hearing. These can be decisive when commercially sensitive matters or cross-border relationships are involved.

The Fast Track procedure

ISTAC offers a Fast Track Arbitration procedure designed for disputes that do not need the full timetable of a standard arbitration — typically lower-value or less complex matters, though parties can also agree to use it. The aim is a quicker, more streamlined route to an award.

In broad terms, Fast Track arbitration compresses the process: it is generally heard by a sole arbitrator, the written stages are shorter, and the rules set a tighter target period for the tribunal to render its award than in standard proceedings. For a foreign company facing a defined, relatively contained claim against a Turkish counterparty, this can mean a faster and more proportionate path to a binding result.

The exact monetary threshold for automatic Fast Track treatment and the precise time limit for rendering the award are set out in the current ISTAC Rules and can change between editions, so they should be confirmed against the version in force when your clause is agreed or your dispute begins.

The emergency arbitrator: urgent relief before the tribunal exists

Sometimes a party needs protection before the full tribunal is even in place — for example, to preserve assets or maintain the status quo while the case is organised. For this, the ISTAC Rules provide for an emergency arbitrator.

The emergency arbitrator is a single arbitrator appointed on an expedited basis to decide an urgent application for interim or conservatory measures (often called ihtiyati tedbir in Turkish practice) before the main tribunal is constituted. The idea is that you do not have to wait weeks for the tribunal to be set up if something urgent is at stake.

Two points are worth keeping in mind. First, applying to an emergency arbitrator does not, by itself, prevent you from also seeking urgent measures from a competent court where that is necessary — for instance, to reach assets or third parties that only a court can bind. Second, how an interim measure is ultimately given effect can depend on where the assets or parties are located and on local law. These are practical questions to work through with counsel rather than to assume.

What does ISTAC arbitration cost?

Arbitration is not free, and it is fair to think about cost before you commit to it. ISTAC publishes a cost structure in its rules and schedules, and the figures are calculated in a transparent, rules-based way rather than negotiated case by case.

At a high level, the main cost components are:

• The administrative (registration and case-management) fee charged by ISTAC for running the proceedings.
• The arbitrators' fees, which compensate the tribunal for deciding the dispute.

Both are generally calculated by reference to the amount in dispute — broadly, the larger the claim, the higher the fees — using the scales published by ISTAC. Because the costs scale with the dispute and are set by published tables, parties can usually estimate the likely institutional and arbitrator cost in advance. The streamlined Fast Track route can also make smaller disputes more proportionate to pursue.

Separately from these institutional and tribunal costs, each side normally bears its own legal-representation costs, and the tribunal decides in the award how the costs of the arbitration are allocated between the parties.

Why a foreign business might choose ISTAC

When you contract with a Turkish company, a common worry is forum: you may be reluctant to litigate in the other side's home courts, in a language you do not read, under a procedure you do not know. ISTAC arbitration is one way to address that concern with a neutral and structured alternative. The typical reasons foreign businesses consider it include:

• Neutrality. Rather than one party's home court, the dispute goes before independent arbitrators the parties help choose, under institutional rules.
• Language. Proceedings can be conducted in English or another agreed language, not necessarily Turkish.
• Confidentiality. Arbitration is private; sensitive commercial information stays out of public court records.
• A defined timetable. The rules set a process and a calendar, and the Fast Track and emergency-arbitrator tools add speed where it is needed.
• A local seat with international reach. Seating arbitration in Türkiye can be efficient where the counterparty, assets, or performance are in Türkiye, while the New York Convention supports recognition of the award across member states.
• Cost that scales with the dispute. Published, value-based fee scales make institutional and arbitrator costs reasonably predictable.

None of this guarantees you will win, and no one can promise an outcome. What ISTAC offers is a credible, neutral process — the result still depends on the facts, the contract, and the law.

Enforcing the award and building ISTAC into your contract

Winning an award is not the end of the story; you then have to enforce it — that is, turn the award into something that lets you actually recover. How that works depends on where the losing party's assets are. To enforce a Turkish-seated award abroad, the main route is the 1958 New York Convention, under which member states recognise and enforce arbitral awards made in other member states, subject to the limited grounds for refusal in the Convention. To enforce a foreign award inside Türkiye, recognition and enforcement (tanımaTanımaRecognition of a foreign judgment in TürkiyeThe court decision that makes a foreign judgment legally effective in Türkiye as proof — without, by itself, making it enforceable.Glossary → ve tenfizTenfizEnforcement of a foreign judgment in TürkiyeThe Turkish court decision that makes a foreign judgment enforceable in Türkiye — the step that lets you actually collect.Glossary →) run through MÖHUKMÖHUKTurkish Private International Law Act No. 5718The Turkish statute that decides which country's law applies to a cross-border matter, and how foreign judgments are recognised and enforced here.Glossary → No. 5718, which sets conditions — for example relating to public policy (kamu düzeni) and proper process — that a Turkish court checks before allowing enforcement.

That is exactly why the time to think about arbitration is when you draft the contract, not after a dispute erupts. If you want ISTAC to handle any future dispute, your contract needs a clear and valid arbitration clause. A well-drafted clause typically addresses:

• That disputes are referred to arbitration under the ISTAC Arbitration Rules (ISTAC publishes a model clause you can adapt).
• The seat of arbitration (for ISTAC cases, normally Istanbul / Türkiye).
• The language of the proceedings.
• The governing law of the contract — which can differ from the seat.
• The number of arbitrators, and whether the Fast Track procedure should apply.

A vague or contradictory clause — for example one that points to both the courts and arbitration — can create costly fights about jurisdiction before anyone reaches the merits.

Frequently asked questions