Introduction: Should Foreign Investors Choose Arbitration or Turkish Courts?

Foreign investors entering Turkey frequently spend substantial time negotiating commercial matters such as valuation, ownership percentages, payment terms, management rights, intellectual property, financing and exit mechanisms.

One clause is often left until the final stages of negotiation:

“How will disputes be resolved?”

That clause may later become one of the most important provisions in the entire investment agreement.

A foreign investor doing business in Turkey can potentially resolve disputes before Turkish state courts or through arbitration, provided the particular dispute is legally arbitrable and a valid arbitration agreement exists.

Turkey’s Foreign Direct Investment Law expressly recognises this framework. For qualifying private-law investment agreements and certain concession-related investment disputes, foreign investors may resort to authorised Turkish courts or, where the relevant legal requirements are satisfied and the parties have agreed, domestic or international arbitration or other dispute-resolution mechanisms.

However, there is no universal answer to the question:

“Is arbitration better than Turkish courts?”

For some cross-border transactions, arbitration is clearly preferable.

For others, Turkish courts may provide stronger, faster or more practical protection.

The correct decision depends on factors such as:

the nature of the dispute, transaction value, location of assets, need for confidentiality, technical complexity, number of parties, urgency, enforcement strategy and whether the dispute is legally capable of being submitted to arbitration.

For example, a EUR 50 million dispute under a Turkish–German joint venture agreement may be an excellent candidate for international arbitration.

A dispute requiring a court order directly affecting title to Turkish real estate may not be.

A shareholder agreement dispute concerning a contractual put option may be arbitrated, while certain proceedings directly concerning corporate status or mandatory company-law remedies require much more careful arbitrability analysis.

Similarly, if the investor needs an immediate attachment over assets in Turkey, access to Turkish courts may remain strategically important even though the underlying dispute is subject to arbitration.

For sophisticated investments, therefore, the correct approach is not:

arbitration instead of courts.

It is often:

arbitration for the merits + Turkish court assistance where legally necessary.

This guide explains when foreign investors should choose arbitration, when Turkish courts may be preferable, and how dispute-resolution clauses should be structured for investments in Turkey in 2026.

1. Foreign Investors Have Access to Both Turkish Courts and Arbitration

Turkey’s foreign investment regime follows a national-treatment principle. Foreign investors are generally treated on an equal basis with domestic investors, and the Foreign Direct Investment Law expressly recognises access to dispute-resolution mechanisms including local courts and agreed arbitration.

The fact that one party is foreign does not mean a dispute automatically goes to international arbitration.

Arbitration is normally based on consent.

The parties must agree that specified disputes will be resolved by arbitration.

That agreement can appear:

• as an arbitration clause in the main contract; or
• in a separate arbitration agreement.

Under Article 4 of Turkey’s International Arbitration Law No. 4686, an arbitration agreement may cover all or some disputes arising from an existing legal relationship, whether contractual or otherwise. The agreement must satisfy the statutory written-form requirement, which can also be met through electronic communications and certain incorporated documents.

Therefore, a foreign investor should not assume:

“We can choose arbitration later if something goes wrong.”

Once the dispute exists, the Turkish counterparty may have no reason to agree.

The dispute-resolution strategy should normally be agreed before the investment is made.

2. When Does Turkey’s International Arbitration Law Apply?

Law No. 4686 governs international arbitration in specified circumstances.

It applies principally where the dispute contains a foreign element and Turkey is selected as the seat of arbitration, or where the parties or tribunal choose the application of the International Arbitration Law in accordance with its statutory scope.

The statute defines foreign elements broadly.

They can arise where the parties have businesses or residences in different countries, where important contractual performance or the subject of the dispute is connected to another country, where foreign capital is involved, or where the underlying relationship produces cross-border movement of capital or goods.

For foreign direct investments, this means many commercial disputes involving:

• foreign shareholders;
• international financing;
• cross-border joint ventures;
• international sale agreements;
• technology licences;
• M&A transactions;
• construction projects;
• distribution arrangements

can potentially fall within the international arbitration framework.

3. Not Every Dispute Can Be Arbitrated

This is the first major limitation foreign investors should understand.

Article 1 of the International Arbitration Law excludes disputes concerning rights in rem over immovable property located in Turkey and disputes that are not subject to the parties’ free disposition.

In other words, an arbitration clause cannot make every possible legal issue arbitrable simply because sophisticated commercial parties agree.

Example

A foreign investor purchases Turkish commercial property and later has a contractual claim against the seller for breach of warranty.

The contractual compensation dispute may potentially be arbitrable.

However, a dispute directly determining an in-rem ownership right over Turkish immovable property falls within a different category and is excluded from the International Arbitration Law’s arbitrability framework.

The same caution applies to corporate disputes.

A contractual dispute between shareholders may be arbitrable.

But where the requested remedy affects mandatory corporate status, third parties, the Trade Registry or rights that parties cannot freely dispose of, separate arbitrability analysis becomes necessary.

A shareholders’ agreement should therefore not simply say:

“Any and all disputes of every nature whatsoever shall exclusively be resolved by arbitration.”

The wording should be designed with Turkish mandatory law in mind.

4. When Is Arbitration Particularly Attractive for a Foreign Investor?

Arbitration is often highly suitable for substantial cross-border commercial agreements.

Typical examples include disputes arising from:

share purchase agreements, shareholders’ agreements, joint ventures, construction contracts, EPC contracts, technology licences, distribution agreements, international supply contracts, shareholder loans, financing documents, post-M&A indemnities, earn-outs, put/call options and commercial cooperation agreements.

The reason is that these disputes are frequently:

• high value;
• technically complex;
• commercially sensitive;
• international;
• and potentially enforceable against assets in more than one jurisdiction.

Arbitration allows the parties to design a dispute-resolution process around the transaction rather than relying solely on the ordinary state-court structure.

5. The Ability to Select Arbitrators Is a Major Advantage

In a Turkish state court, the parties do not choose the judge.

In arbitration, the parties often have substantial influence over the appointment process.

Article 7 of the International Arbitration Law allows the parties to determine the number and selection procedure for arbitrators within the statutory framework. Where the parties do not agree on the number, the default statutory structure provides for three arbitrators; the statute also contains court-assistance mechanisms if the agreed appointment process fails.

This can be especially important in specialist disputes.

For example, a dispute may involve:

• complex project finance;
• construction delay;
• pharmaceutical licensing;
• software ownership;
• mining;
• energy;
• telecommunications;
• or international M&A.

A tribunal containing arbitrators with real experience in that area can significantly improve the quality and efficiency of proceedings.

ISTAC itself emphasises the possibility of parties selecting arbitrators with expertise relevant to the dispute.

6. Arbitration Can Provide Greater Procedural Flexibility

State litigation follows statutory procedural rules.

Arbitration gives the parties substantially more flexibility to determine how the proceedings will operate.

Depending on the applicable rules, parties may determine matters such as:

• language;
• number of arbitrators;
• seat;
• procedural calendar;
• document production;
• expert evidence;
• hearing format;
• and institutional rules.

This flexibility is particularly important where one shareholder is Turkish and the other is foreign.

The parties might select:

seat: Istanbul
language: English
institution: ISTAC
tribunal: three arbitrators
governing law: Turkish law.

This can provide the international investor with an English-language adjudication process while still keeping the legal seat in Turkey.

ISTAC’s current framework also permits online hearings by video conference or teleconference, with the tribunal addressing confidentiality, security and technical arrangements.

7. Confidentiality Can Be Important in Investor Disputes

Commercial disputes frequently involve sensitive information.

A shareholder dispute may expose:

• company valuation;
• bank statements;
• internal board correspondence;
• trade secrets;
• pricing;
• customer information;
• intellectual property;
• allegations against management;
• and confidential transaction documents.

Arbitration is generally better suited than ordinary public litigation to maintaining commercial confidentiality, subject to the applicable institution, law and procedural arrangements.

This can be particularly valuable in:

• family-owned Turkish companies receiving foreign investment;
• private equity transactions;
• technology ventures;
• and high-profile joint ventures.

An investor whose dispute involves sensitive commercial information may therefore prefer arbitration even where Turkish courts would otherwise have jurisdiction.

8. Arbitration Can Avoid Multiple Merits Appeals

One of arbitration’s principal structural differences is limited judicial review of the final award.

Under Article 15 of the International Arbitration Law, the ordinary remedy against an international arbitral award seated in Turkey is an action for annulment, rather than a full appeal on the merits. The statute lists specific grounds such as invalidity of the arbitration agreement, procedural irregularities, excess of authority, failure to respect equality of the parties, non-arbitrability and violation of public policy.

The annulment action must generally be filed within 30 days following notification of the award or the relevant correction, interpretation or supplementary award.

This means the losing party does not ordinarily obtain a complete second merits trial merely because it disagrees with how the tribunal interpreted evidence or commercial facts.

For sophisticated investors, that can be a major advantage.

However, it is also a risk.

If the tribunal makes a poor factual assessment, the investor’s ability to obtain a merits-level correction is far more limited than in ordinary state litigation.

Arbitration therefore places even greater importance on:

selecting the right tribunal.

9. Arbitration Is Not Automatically Cheaper

It is dangerous to assume:

“Arbitration is cheaper than court litigation.”

Sometimes it is.

Sometimes it is significantly more expensive.

In arbitration, parties may need to pay:

• arbitrator fees;
• institutional fees;
• experts;
• hearing facilities;
• translators;
• technical specialists;
• and international counsel.

Article 16 of the International Arbitration Law expressly treats arbitrator remuneration and various arbitration expenses as part of the costs of proceedings.

In a high-value dispute involving three arbitrators and international law firms, the upfront cost may be substantial.

State courts generally do not require the parties to pay the judge.

Therefore, for a relatively simple TRY 500,000 debt dispute entirely connected to Turkey, arbitration may not be commercially rational.

For a EUR 50 million international M&A dispute, the cost of a specialist tribunal may be easily justified.

The correct comparison is:

cost relative to the value and complexity of the dispute.

10. ISTAC Offers a Turkey-Based International Arbitration Option

Foreign investors should not assume that arbitration means London, Paris, Geneva or Singapore.

Turkey has its own institutional arbitration centre: the Istanbul Arbitration Centre — ISTAC.

ISTAC administers arbitration for both domestic and foreign parties where the parties agree to apply the ISTAC Arbitration Rules.

Its current procedural infrastructure includes:

• ordinary arbitration;
• fast-track arbitration;
• emergency arbitrator procedures;
• online hearings;
• mediation;
• and Med-Arb mechanisms.

For international investors whose transaction is closely connected with Turkey, ISTAC can provide a useful middle ground:

international arbitration structure without moving the seat and institution entirely outside Turkey.

11. ISTAC Fast-Track Arbitration Can Be Useful for Smaller or Urgent Commercial Claims

Not every arbitration requires a lengthy three-arbitrator process.

ISTAC offers fast-track proceedings designed for more expedited adjudication.

Its published fast-track procedure includes a shorter defence timetable and permits the matter to be resolved through a hearing or on documents, depending on the circumstances.

This can be useful for disputes such as:

• unpaid purchase price;
• post-closing adjustment;
• smaller contractual indemnity;
• supplier dispute;
• straightforward shareholder loan claim.

When drafting the agreement, investors should therefore consider whether the institution’s expedited rules may be appropriate rather than assuming every dispute needs a full-scale arbitration.

12. Emergency Arbitration Can Protect an Investment Before the Tribunal Is Formed

One historical concern with arbitration was:

“What happens if we need urgent protection tomorrow but the tribunal takes weeks to form?”

Modern institutional rules address this problem.

ISTAC’s Emergency Arbitrator mechanism permits urgent applications before the ordinary tribunal is constituted. ISTAC states that an emergency arbitrator is appointed within two working days, and the emergency arbitrator is expected to render the decision within seven days under the applicable mechanism.

This can potentially be valuable where one party threatens to:

• transfer shares;
• dispose of key IP;
• draw a guarantee;
• move assets;
• or take another irreversible contractual action.

However, investors should still distinguish between arbitral interim measures and coercive measures requiring state authority.

13. Choosing Arbitration Does Not Eliminate Turkish Courts

This point is crucial.

Article 6 of the International Arbitration Law expressly provides that asking a court for an interim injunction or provisional attachment before or during arbitration does not violate the arbitration agreement.

The arbitral tribunal can also grant certain interim measures unless the parties have agreed otherwise.

However, the tribunal cannot itself issue measures requiring execution by compulsory enforcement bodies or measures binding third parties in the same way as a state court. Where necessary, the parties can seek assistance from the competent court.

Therefore, a sophisticated arbitration strategy may look like this:

Turkish court → urgent attachment of Turkish assets

followed by:

arbitration → final determination of contractual liability.

That is not contradictory.

It is often exactly how effective international dispute resolution works.

14. Turkish Courts Can Be Better Where Coercive Powers Are Central

State courts have powers that arbitral tribunals do not possess in the same way.

This becomes important where the dispute requires:

• seizure or attachment of assets;
• orders binding non-parties;
• compulsory evidence measures;
• direct public-register consequences;
• enforcement against unwilling third parties;
• or certain mandatory corporate measures.

If the investor’s dispute is likely to depend heavily on public authority rather than contractual adjudication, Turkish litigation may therefore be more practical.

This is particularly important where fraud, asset dissipation or complex multi-party enforcement is expected.

15. Turkish Courts May Be More Efficient for Straightforward Domestic Claims

Consider a foreign-owned Turkish subsidiary that sells goods to a Turkish customer.

The customer fails to pay:

TRY 1 million.

There is no cross-border technical issue.

The debtor’s bank accounts and property are entirely in Turkey.

The contract is governed by Turkish law.

In that case, an ordinary Turkish enforcement/court strategy may be far more proportionate than commencing international arbitration.

The investor should not choose arbitration merely because it sounds more international.

Arbitration is a dispute-resolution tool—not a prestige feature.

16. Court Litigation Can Be Preferable Where Several Third Parties Must Be Involved

Arbitration depends on consent.

This can become difficult in multi-party disputes.

Suppose a Turkish construction dispute involves:

• employer;
• main contractor;
• architect;
• subcontractor;
• insurer;
• bank;
• and guarantee provider.

If only two of these parties signed the arbitration agreement, it may be difficult to bring everyone into a single arbitration.

State courts can often deal more naturally with disputes requiring joinder of parties, third-party participation or claims arising from multiple independent relationships.

For large projects, the investor should therefore ensure that arbitration clauses across connected contracts are coordinated.

A perfectly drafted arbitration clause in one agreement can still create procedural chaos if every related contract contains a different dispute-resolution clause.

17. Turkish Courts May Be Necessary for Certain Corporate Remedies

Foreign investors commonly use arbitration clauses in shareholders’ agreements.

This is generally sensible for contractual disputes involving matters such as:

• reserved matters;
• funding obligations;
• transfer rights;
• tag-along;
• drag-along;
• put options;
• call options;
• deadlock;
• valuation;
• confidentiality;
• and contractual damages.

However, corporate disputes need special care.

Some remedies may directly affect:

• general assembly resolutions;
• company status;
• compulsory corporate rights;
• Trade Registry records;
• or interests of persons who never signed the shareholders’ agreement.

Where a dispute concerns rights outside the parties’ free disposition, the International Arbitration Law excludes arbitration.

Therefore, a shareholder agreement should clearly distinguish between:

contractual shareholder disputes suitable for arbitration

and

mandatory corporate proceedings that may need to remain before Turkish courts.

18. Commercial Real Estate Disputes Require the Same Distinction

Suppose a foreign investor signs a commercial real estate SPA containing an arbitration clause.

A claim for:

EUR 3 million damages because the seller breached contractual warranties

may potentially be arbitrable.

A dispute directly determining a right in rem over Turkish real estate is treated differently because Law No. 4686 expressly excludes disputes concerning in-rem rights over Turkish immovables.

This illustrates an important drafting principle:

The fact that a contract concerns real estate does not necessarily make every contractual claim non-arbitrable, but the remedy sought matters.

Foreign real estate investors should therefore have the arbitration clause reviewed against the actual transaction structure.

19. Enforcement Is One of Arbitration’s Strongest International Advantages

A foreign investor does not merely need to win.

It needs to collect.

This is where international arbitration can have a major advantage over ordinary court litigation.

Türkiye has been a party to the 1958 New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards since 1992.

The Convention creates a widely used international system through which arbitral awards can be recognised and enforced in contracting states, subject to limited refusal grounds.

This is particularly valuable where the counterparty has assets in several jurisdictions.

Example

Foreign investor wins an award against a Turkish counterparty.

The counterparty holds:

• bank accounts in Turkey;
• receivables in Germany;
• property through a subsidiary elsewhere.

An internationally enforceable arbitral award can provide a much broader enforcement strategy than a purely domestic claim.

This is one of the main reasons arbitration is particularly attractive in cross-border investment agreements.

20. Foreign Arbitral Awards Can Be Enforced in Turkey

If an award is rendered outside Turkey, enforcement in Turkey is governed by the applicable international conventions and Turkish international private law framework.

Turkey’s International Private and Procedural Law No. 5718 regulates recognition and enforcement of foreign arbitral awards in Articles 60–63, subject to international conventions such as the New York Convention where applicable.

Refusal grounds are limited and include issues such as:

• invalid arbitration agreement;
• failure to give proper notice or an opportunity to present the case;
• excess of arbitral authority;
• procedural irregularity;
• award not being binding or having been set aside;
• non-arbitrability;
• and Turkish public policy.

This does not mean enforcement is automatic.

But it means the Turkish enforcement court is generally not supposed to retry the entire commercial dispute merely because the losing party disagrees with the result.

21. Public Policy Is an Important Enforcement Limitation

Foreign investors should understand the concept of Turkish public policy — kamu düzeni.

Both annulment of Turkey-seated awards and enforcement of foreign awards can involve public-policy review.

Under Article 15 of the International Arbitration Law, an arbitral award may be annulled where the competent court determines that the award violates public policy.

Similarly, public policy is relevant to enforcement of foreign awards under Turkey’s international arbitration/enforcement framework.

This does not create a general merits appeal.

But it does mean that foreign investors should not assume that choosing foreign law or foreign arbitration allows the parties to bypass mandatory Turkish principles that engage public policy.

22. A Valid Arbitration Clause Is Essential

Many arbitration problems begin because the dispute-resolution clause was drafted badly.

Article 4 of Law No. 4686 requires a written arbitration agreement and recognises both a clause within the main contract and a separate arbitration agreement. The law also recognises electronic communications and incorporation by reference in appropriate circumstances.

A good arbitration clause should address matters including:

A clause saying:

“Any disagreement shall be settled by international arbitration.”

is unnecessarily risky.

Which institution?

Which rules?

Where is the seat?

What language?

How many arbitrators?

These questions should be answered before the contract is signed.

23. Seat of Arbitration and Hearing Location Are Different

Foreign investors sometimes confuse:

seat of arbitration

with

physical place of hearing.

The seat is legally important because it normally connects the arbitration to the procedural arbitration law and supervisory court system.

The hearing itself can potentially take place elsewhere or online where the applicable rules permit.

For example:

Seat: Istanbul

but hearings may be conducted:

online or in another city

depending on the tribunal and applicable rules.

ISTAC expressly provides for online hearings through video or teleconference.

The investor should therefore select the seat based on legal strategy rather than travel convenience alone.

24. Istanbul as the Seat Can Be Attractive for Turkish Investments

Selecting Istanbul as the seat can be commercially sensible where:

• the underlying company is Turkish;
• assets are in Turkey;
• Turkish law governs;
• witnesses and documents are in Turkey;
• and the transaction is largely performed in Turkey.

Turkey has a dedicated International Arbitration Law, and Turkish courts’ intervention in international arbitration is expressly limited to circumstances provided by the statute.

An Istanbul seat can therefore combine:

Turkish legal connection + international arbitral procedure + New York Convention enforcement framework.

For some investors this can be more efficient than selecting a distant foreign seat solely because it appears more neutral.

25. When Might a Foreign Seat Be Preferable?

A foreign seat may nevertheless be justified where:

• neither party wants the other’s home jurisdiction;
• assets are mainly abroad;
• the transaction is governed by foreign law;
• the deal has little operational connection to Turkey;
• lenders require a particular international seat;
• or parties prefer an established sector-specific arbitration market.

For example, a complex international commodities agreement involving a Turkish party may legitimately select London arbitration because the relevant industry and contractual ecosystem are centred there.

The choice should be based on the transaction.

It should not be based on a generic assumption that foreign arbitration is always superior to an Istanbul seat.

26. Turkish Law Can Govern the Contract Even if the Case Is Arbitrated in English

Choice of forum and choice of law are separate questions.

A shareholders’ agreement may provide:

Turkish substantive law

while disputes are resolved by:

ISTAC arbitration in English.

Similarly:

English law

might govern a financing agreement while:

Istanbul

is selected as the arbitral seat, subject to mandatory rules and appropriate conflict-of-law analysis.

Foreign investors should therefore negotiate separately:

governing law + dispute forum + seat + language.

Using the words “Turkish arbitration” does not automatically mean every aspect of the transaction must be governed by Turkish substantive law.

27. Turkish Courts Can Apply Foreign Law in Appropriate Cases

Choosing Turkish courts also does not necessarily mean Turkish substantive law applies to every dispute.

Turkey’s International Private and Procedural Law regulates applicable law in foreign-element private-law relationships. Turkish courts apply the conflict-of-laws rules and, where those rules designate foreign law, the court applies the relevant foreign substantive law under the statutory framework.

That said, foreign-law litigation before Turkish courts may require:

• translations;
• expert opinions;
• evidence of foreign law;
• and additional procedural complexity.

For a heavily international contract governed by foreign law, arbitration before a tribunal experienced in that law can sometimes be more efficient.

28. Arbitration May Be Especially Suitable for Joint Venture Deadlocks

Consider:

Foreign Investor: 50%

Turkish Partner: 50%.

Their shareholders’ agreement contains:

• reserved matters;
• board appointment rights;
• put/call mechanisms;
• non-compete;
• deadlock;
• valuation;
• and exit provisions.

A dispute arises over whether the foreign investor validly exercised a contractual call option.

This is the type of dispute arbitration can handle particularly well.

The tribunal can interpret:

• contractual trigger;
• valuation procedure;
• notices;
• breach;
• and contractual performance.

However, if the investor also needs a corporate remedy directly invalidating a mandatory company resolution or altering a Trade Registry status, Turkish court involvement may still need to be analysed.

Sophisticated shareholder agreements should therefore anticipate parallel but coordinated remedies.

29. M&A Disputes Are Often Strong Arbitration Candidates

Cross-border share purchase agreements frequently contain arbitration clauses because post-closing disputes tend to involve:

• warranty breaches;
• tax indemnities;
• working capital adjustments;
• earn-outs;
• purchase-price calculation;
• undisclosed liabilities;
• fraud allegations;
• and indemnification.

These disputes are highly document-driven and can involve sophisticated accounting questions.

A tribunal composed of lawyers and potentially supported by valuation/accounting experts can be particularly effective.

Confidentiality is also valuable because the dispute may expose sensitive details regarding the acquired business.

For sizeable foreign M&A transactions in Turkey, arbitration should therefore normally be considered seriously.

30. Construction and Infrastructure Disputes Are Also Common Arbitration Candidates

Large construction disputes frequently involve:

• extensions of time;
• delay damages;
• variation orders;
• defects;
• engineering standards;
• payment certificates;
• escalation;
• and complex expert evidence.

They can involve enormous technical records.

Arbitration permits appointment of arbitrators with construction experience and allows the procedure to be adapted to extensive expert evidence.

ISTAC’s 2026 public programme continues to feature construction and international arbitration activity, reflecting the institution’s active role in commercial dispute resolution.

For international EPC and industrial projects in Turkey, arbitration is therefore frequently a natural choice.

31. When Are Turkish Courts Likely to Be the Better Choice?

Despite arbitration’s advantages, Turkish courts may be preferable where the dispute is primarily domestic, relatively low-value, legally straightforward, heavily dependent on coercive public powers or outside the scope of arbitration.

Typical examples can include:

• ordinary Turkish receivables;
• certain employment disputes;
• certain consumer disputes;
• rights in rem over Turkish real estate;
• mandatory corporate-status remedies;
• registration matters;
• insolvency;
• enforcement proceedings;
• or disputes involving many non-signatory third parties.

The investor should therefore avoid adopting a group policy such as:

“Every Turkish contract must contain arbitration.”

A better policy categorises contracts by risk and transaction type.

32. Arbitration and Turkish Courts Compared

The most important point is that neither column is universally superior.

The correct answer is transaction-specific.

33. Investor-State Arbitration Is Different From Commercial Arbitration

Foreign investors should also distinguish:

commercial arbitration

from

investor-state arbitration.

Commercial arbitration arises from contracts between commercial parties.

For example:

Foreign Investor v. Turkish Joint Venture Partner.

Investor-state arbitration concerns claims by a qualifying foreign investor against the host state under an applicable investment treaty or other valid consent mechanism.

Turkey’s Ministry of Trade states that its Bilateral Investment Treaties are designed to protect investments against non-commercial risks and include international dispute-settlement mechanisms for investment disputes between investors and the host state.

Türkiye is also a contracting state to the ICSID Convention, which entered into force for Türkiye on 2 April 1989.

However, merely being a foreign investor does not automatically create a right to sue Turkey at ICSID.

The investor must establish a valid jurisdictional basis, potentially through:

• an applicable BIT;
• investment agreement;
• treaty provision;
• or another recognised form of consent.

Investor-state arbitration is therefore a separate specialised analysis from an ordinary shareholders’ agreement arbitration.

34. An Arbitration Clause Should Be Negotiated as Part of the Investment Architecture

A good dispute clause should reflect:

• transaction structure;
• likely disputes;
• location of assets;
• governing law;
• and exit strategy.

For example, consider a EUR 30 million Turkish joint venture.

A commercially sensible dispute structure could provide:

Turkish substantive law.
ISTAC Arbitration Rules.
Seat: Istanbul.
Language: English.
Three arbitrators above an agreed claim threshold.
Emergency relief permitted.
Parties remain free to seek interim measures from competent courts.

The clause might also identify specified corporate remedies that remain subject to mandatory Turkish court jurisdiction where required.

This is significantly more useful than copying a two-line arbitration clause from an unrelated international contract.

35. Practical Example: 40% Foreign Investor in a Turkish Company

Assume:

Foreign Investor: 40%.

Turkish Founder: 60%.

The SHA states that related-party transactions above EUR 500,000 require foreign investor consent.

The Turkish founder allegedly causes the company to transfer EUR 5 million to an affiliate without approval.

Potential disputes could include:

Contractual claim: breach of reserved-matters provisions.

Corporate claim: validity of board/general assembly actions.

Management-liability claim: possible liability of directors.

Urgent relief: prevention of further transfers.

A single arbitration clause may not automatically solve every dimension.

The investor’s lawyers should determine:

• which claims are arbitrable;
• whether Turkish court interim measures are needed;
• whether the company itself is bound by the arbitration clause;
• and whether separate corporate proceedings are necessary.

This is why the dispute clause should be designed together with the corporate governance structure.

36. Practical Example: Foreign Buyer in a Turkish M&A Transaction

A UK investor buys a Turkish manufacturer for EUR 75 million.

The SPA includes warranties concerning:

• tax;
• SGK;
• environmental compliance;
• litigation;
• IP;
• and financial statements.

After closing, the buyer discovers alleged historical tax liabilities of EUR 8 million.

The dispute concerns:

• contractual warranty;
• disclosure letter;
• indemnity;
• limitation period;
• damage calculation.

This is an excellent example of a dispute that may suit arbitration.

The tribunal can focus on the SPA and the accounting/tax evidence.

There may be no need for a public corporate-status order.

The international buyer may also value confidentiality.

37. Practical Example: Ownership of Turkish Industrial Land

A foreign investor claims that it has an ownership right over a Turkish industrial parcel and seeks a ruling directly determining that right in rem.

This is fundamentally different.

Article 1 of the International Arbitration Law excludes disputes concerning rights in rem over immovable property situated in Turkey.

The investor cannot cure that jurisdictional problem simply by writing:

“All property disputes shall be subject to arbitration.”

This is why arbitrability should be assessed at drafting stage.

38. Practical Example: Urgent Asset Attachment Before Arbitration

Foreign company believes its Turkish contractual counterparty is transferring assets to avoid payment.

Contract contains international arbitration clause.

The foreign investor does not necessarily need to wait for the arbitral tribunal to be fully constituted before seeking protection.

Article 6 expressly states that a request to a court for interim relief or provisional attachment before or during arbitration does not breach the arbitration agreement.

Accordingly, the strategy may be:

seek Turkish provisional attachment → commence arbitration within the required framework → pursue the merits before the tribunal.

This is one of the clearest examples of arbitration and courts working together.

Frequently Asked Questions

Can a foreign investor sue in Turkish courts?

Yes. Foreign investors generally have access to authorised Turkish courts under Turkish procedural rules, and the Foreign Direct Investment Law expressly recognises local courts as a dispute-resolution option.

Can a foreign investor choose arbitration instead?

Yes, where there is a valid arbitration agreement and the dispute is legally arbitrable.

Must an arbitration agreement be written?

Yes. Article 4 of Law No. 4686 requires written form but recognises modern forms such as electronic communication and incorporation by reference under the statutory conditions.

What happens if one party sues in court despite an arbitration clause?

The other party can raise an arbitration objection. Where the objection is accepted, the court dismisses the case procedurally under the International Arbitration Law.

Can Turkish real estate ownership disputes be arbitrated?

Disputes concerning rights in rem over immovable property located in Turkey are expressly excluded from the International Arbitration Law’s scope.

Can shareholders’ agreement disputes be arbitrated?

Many contractual SHA disputes can be. However, mandatory corporate-status remedies and rights outside party disposition require separate arbitrability analysis.

Can parties choose English as the arbitration language?

Yes, subject to the applicable arbitration rules and agreement.

Can parties use ISTAC?

Yes. ISTAC administers arbitration for domestic and foreign parties where the parties agree to ISTAC Arbitration Rules.

Does ISTAC have emergency arbitration?

Yes. ISTAC’s current mechanism provides for appointment of an emergency arbitrator within two working days and a decision within the stated seven-day framework.

Can an arbitration hearing be held online?

Yes under ISTAC’s online hearing rules.

Can Turkish courts grant interim relief even when there is an arbitration clause?

Yes. Requesting a provisional injunction or attachment from a court before or during arbitration does not itself violate the arbitration agreement.

Can an arbitral tribunal bind third parties through interim measures?

Its coercive powers are more limited. Article 6 restricts arbitral interim measures requiring compulsory enforcement or binding third parties, making court assistance important in appropriate cases.

Can a Turkey-seated arbitral award be appealed?

The ordinary route is a limited annulment action under Article 15 rather than a full merits appeal.

How long is the annulment period?

Generally 30 days from notification of the award or relevant correction, interpretation or supplementary decision.

Can the court annul an award because it disagrees with the evidence?

The annulment framework is based on specified statutory grounds rather than an ordinary full merits appeal.

Can a foreign arbitral award be enforced in Turkey?

Yes, subject to the New York Convention and applicable Turkish law. Türkiye has been a New York Convention contracting state since 1992.

Can enforcement be refused?

Yes on limited grounds including invalid arbitration agreement, procedural unfairness, excess of authority, non-arbitrability, certain defects affecting the status of the award and public policy.

Is Turkey a member of ICSID?

Yes. The ICSID Convention entered into force for Türkiye on 2 April 1989.

Can every foreign investor sue Turkey at ICSID?

No. A valid jurisdictional basis and consent are necessary, typically through an applicable investment treaty or another recognised mechanism.

Conclusion: Should Foreign Investors Choose Arbitration or Turkish Courts in Turkey?

For substantial foreign investments in Turkey, the choice between arbitration and Turkish courts should never be treated as standard boilerplate.

The right choice depends on the type of dispute the investor is likely to face.

Arbitration is particularly attractive where the relationship is:

international + contractual + high-value + confidential + technically complex.

That makes it especially suitable for:

M&A + shareholders’ agreements + joint ventures + construction + financing + technology + international supply and distribution disputes.

Turkey has a developed international arbitration framework.

Law No. 4686 applies to qualifying international arbitrations and recognises broad foreign-element criteria, including cross-border businesses, foreign capital and international movement of goods and capital.

The law also limits court intervention in international arbitration to the circumstances contemplated by the statute.

For investors, arbitration’s principal advantages include:

ability to select arbitrators, procedural flexibility, confidentiality, international enforceability and limited merits review.

ISTAC adds an important domestic institutional option.

It administers arbitration for international parties and offers ordinary proceedings, expedited mechanisms, emergency arbitration and online hearings.

The international enforcement advantage is particularly significant.

Türkiye is a contracting state to the New York Convention, creating an internationally recognised framework for recognition and enforcement of arbitral awards.

For investors whose counterparty may hold assets in multiple countries, this can be decisive.

But arbitration is not always the correct choice.

First, some disputes are not arbitrable.

Article 1 expressly excludes disputes concerning rights in rem over Turkish immovable property and matters that are not subject to party disposition.

Second, Turkish courts possess stronger coercive powers.

They can be more effective where the investor needs:

• asset attachment;
• third-party orders;
• public-register consequences;
• enforcement measures;
• or participation of parties who never agreed to arbitration.

Third, arbitration can be expensive.

For a relatively small domestic debt claim, arbitrator and institutional costs may be disproportionate.

Fourth, arbitral awards are subject to only limited review.

Article 15 permits annulment on specified grounds, but arbitration does not provide a broad second opportunity to relitigate the merits.

That is an advantage when the investor wins.

It can be a disadvantage when the investor believes the tribunal simply made the wrong factual decision.

Foreign investors should therefore avoid applying one dispute clause to every contract.

A practical dispute-resolution policy could instead distinguish:

high-value cross-border investment contracts → arbitration;

ordinary domestic trade receivables → Turkish courts/enforcement;

rights in rem over Turkish real property → Turkish courts;

contractual shareholders’ agreement rights → arbitration where appropriate;

mandatory corporate-status remedies → Turkish court/arbitrability analysis;

urgent asset protection → Turkish courts and/or emergency arbitration depending on remedy;

investor-state claims → BIT/ICSID or other treaty analysis rather than ordinary commercial arbitration.

The strongest international investment contracts also recognise that arbitration and courts are complementary rather than mutually exclusive.

Article 6 of Turkey’s International Arbitration Law expressly allows parties to seek interim injunctions or provisional attachments from courts before or during arbitration without violating the arbitration agreement.

Therefore, a foreign investor may legitimately structure a dispute strategy as:

Turkish courts for urgent protection — arbitral tribunal for the final contractual dispute — Turkish or foreign courts for enforcement of the award.

That is often more effective than forcing every issue into one forum.

Finally, dispute resolution should be designed before the investment closes.

A foreign investor negotiating a Turkish shareholders’ agreement, joint venture, SPA, financing agreement or major commercial contract should determine:

What disputes are most likely?

Are those disputes legally arbitrable?

Where are the counterparty’s assets?

Will confidentiality matter?

Would specialist arbitrators improve the outcome?

Will third-party coercive measures be necessary?

Should Istanbul, another Turkish location or a foreign jurisdiction be the seat?

Should the arbitration language be English?

Will one or three arbitrators be appropriate?

Which institution should administer the proceedings?

What happens if urgent interim protection is required?

A well-designed arbitration clause can significantly reduce uncertainty when an investment relationship breaks down.

A poorly drafted clause can create an entirely new dispute about jurisdiction before the parties even begin arguing about the underlying investment.

For many substantial foreign investments in Turkey, particularly international M&A, joint ventures, shareholder agreements, construction projects and sophisticated commercial contracts, arbitration will often be the stronger default choice.

For disputes involving Turkish real estate rights, mandatory corporate matters, insolvency, public registration, smaller domestic claims or extensive third-party enforcement, Turkish courts may be more effective or legally necessary.

The correct answer is therefore not:

“Arbitration is always better.”

Nor is it:

“Turkish courts should always be preferred because the investment is in Turkey.”

The better principle is:

Choose arbitration when international enforceability, confidentiality, expertise and contractual flexibility are more valuable; choose Turkish courts where mandatory jurisdiction, coercive powers, third-party effects or proportionality make state litigation more effective.

That analysis should form part of the investment documentation from day one.

This article reflects Turkish international arbitration, private international law and foreign investment rules and publicly available official guidance as of August 2026. It is intended for general informational purposes only and does not constitute dispute-specific legal advice. The appropriate forum depends on the contract, arbitration clause, governing law, seat, nature of the remedy, arbitrability of the dispute, location of assets, identity of the parties and any applicable bilateral or multilateral investment treaty.