A European infrastructure investor signs a joint venture agreement with a Chilean partner. The contract is governed by Chilean law. Two years later, a revenue-sharing dispute escalates. The investor's legal team assumes international arbitration is automatically available. In practice, they discover that the arbitration clause is ambiguous, the seat of arbitration was never specified, and Chilean procedural rules will govern the entire process by default. The cost of that oversight is measured in months of delay and significant legal fees spent resolving preliminary jurisdiction questions before the merits are even reached.
Commercial arbitration in Chile operates under a dual-track system: domestic proceedings before a Chilean arbitral tribunal (arbitration panel) constituted under national civil procedure rules. Additionally. International proceedings subject to Chile's international commercial arbitration legislation. This aligns closely with the UNCITRAL Model Law. The choice of forum, rules, and seat of arbitration determines procedural timelines, arbitrator appointment mechanisms, and award enforcement options. Chile is a party to the Convención de Nueva York (New York Convention), so properly structured international awards benefit from recognition in over 170 countries.
This guide explains how to choose between local and international forums in Chile, how each proceeding unfolds step by step, what documents are required. There. Foreign parties typically go wrong. Additionally, how to assess the economics of each path before committing to a strategy.
How Chilean arbitration law is structured
Chile maintains two distinct legislative regimes for arbitration. Domestic arbitration is governed by civil procedure legislation and the civil code, which have regulated arbitration in Chile for over a century. International commercial arbitration is governed by a separate body of arbitration legislation that incorporates the UNCITRAL Model Law with limited modifications.
The threshold distinction is not always obvious. An arbitration is considered international under Chilean law when one party has its principal place of business outside Chile. When the place of performance is abroad. Alternatively, when the parties have expressly agreed that the subject matter relates to more than one country. Disputes that do not meet these criteria default to the domestic regime, even if one party is a foreign entity operating through a local subsidiary.
This distinction has direct procedural consequences. Under the domestic regime, the arbitral tribunal is typically constituted by appointment before a civil court if the parties cannot agree. Timelines, evidentiary rules, and grounds for challenge largely follow the national civil procedure code. Under the international regime, the parties enjoy substantially greater autonomy. They may select institutional rules – such as ICC Rules or UNCITRAL arbitration rules – appoint arbitrators without court involvement, conduct proceedings in any language, and apply any substantive law they choose.
A non-obvious risk for foreign investors is the category of árbitro arbitrador (equity arbitrator) versus árbitro de derecho (law arbitrator). Chilean civil procedure legislation recognises both. An equity arbitrator decides on principles of fairness rather than strict legal rules, which can produce unpredictable outcomes for parties accustomed to legal certainty. Many standard-form contracts drafted by local counsel default to equity arbitration without explaining the implications. International parties should verify which category applies before signing.
For cross-border matters structured under the international regime, the Ferraz & Whitmore litigation and arbitration practice in Chile advises on clause drafting, forum selection, and tribunal constitution from the outset.
Step-by-step: from dispute to award in Chile
Understanding the sequential steps in each track helps parties plan resources and timelines accurately.
Step 1 – Verify the arbitration agreement. Before filing, confirm the agreement is in writing, covers the subject matter of the dispute, and specifies the type of arbitrator, the seat, and the applicable procedural rules. Gaps in any of these elements trigger disputes about jurisdiction. This step can take one to four weeks if the clause requires legal analysis.
Step 2 – Send the notice of arbitration. The claimant serves a written notice identifying the parties, summarising the dispute, and stating the relief sought. Under ICC Rules, this document is filed with the ICC Secretariat. Under UNCITRAL rules, it goes directly to the respondent. Under the domestic regime, the process begins with a formal demand served in accordance with Chilean civil procedure rules. Allow two to four weeks from notice to acknowledgement of receipt.
Step 3 – Constitute the arbitral tribunal. Parties appoint arbitrators according to the agreed mechanism – typically one arbitrator each with a third co-appointed or selected by the institution. Under the domestic regime, if the parties fail to agree, a Chilean civil court makes the appointment. Under institutional rules, the ICC Court or the appointing authority under UNCITRAL rules steps in. Tribunal constitution takes four to twelve weeks in international proceedings and can extend significantly in contested domestic cases.
Step 4 – Preliminary conference and procedural timetable. Once constituted, the tribunal holds an organisational session to set the calendar. Define document production scope, determine whether witness evidence is needed. Additionally, establish the language of proceedings. This step is less formalised in domestic arbitration and more structured in ICC or UNCITRAL proceedings. Allow two to six weeks.
Step 5 – Written submissions and document production. Each party files a statement of claim and statement of defence, accompanied by documentary evidence. International proceedings typically follow a two-round exchange. Chilean domestic proceedings may use a more inquisitorial format. This phase takes three to nine months depending on document volume and cross-border discovery needs.
Step 6 – Evidentiary hearing. Witnesses and experts give evidence before the tribunal. In international proceedings, written witness statements are exchanged before the hearing. In domestic proceedings, witness examination follows civil procedure rules more closely. Hearings typically last two to five days for mid-sized commercial disputes.
Step 7 – Post-hearing submissions and deliberation. The tribunal sets a schedule for final legal briefs. Deliberation follows. Under ICC Rules, the draft award is reviewed by the ICC Court before issue. Final awards in international proceedings are typically issued three to six months after the hearing closes. Domestic proceedings may move faster or slower depending on the arbitrator's calendar.
Step 8 – Award enforcement. A domestic award is enforced through Chilean courts in the same way as a court judgment. A foreign award requires exequatur (recognition of a foreign judgment or award by Chilean courts) before enforcement can proceed. The New York Convention governs recognition of international awards. Courts examine whether the award meets convention requirements and does not violate Chilean public policy. The exequatur process before the Chilean Supreme Court typically takes six to eighteen months.
For foreign parties comparing this process with US-seated proceedings, the guide to commercial arbitration in the United States sets out a useful point of comparison on tribunal constitution and award enforcement timelines.
Documentary checklist and common errors by foreign clients
Assembling the correct documentation before filing avoids procedural delays that frequently affect international parties in Chile. The following checklist covers the core requirements for both tracks.
- The original or certified copy of the contract containing the arbitration clause, with a certified Spanish translation if executed in another language
- Corporate authorisation documents confirming the signatory's power to bind the entity to arbitration
- The notice of arbitration or demand document, signed and dated, with proof of service on the respondent
- Evidence supporting the claimed amount – invoices, financial statements, expert valuations – organised by factual allegation
- Any prior correspondence demonstrating the existence and breakdown of the commercial relationship
Several errors recur among foreign clients. The most frequent is submitting documents in English without certified Spanish translations. Chilean courts and domestic arbitral tribunals conduct proceedings in Spanish. Even in international arbitrations seated in Santiago, procedural filings with the civil courts – for interim measures or exequatur – must be in Spanish. Failure to translate promptly can delay proceedings by weeks.
A second common error is selecting the wrong type of arbitrator. As noted above, the distinction between law arbitrators and equity arbitrators has significant consequences. Foreign parties who do not specify "law arbitrator" (árbitro de derecho) in their clause may find themselves in equity-based proceedings where Chilean civil law rules on evidence and substance do not formally apply.
A third error involves interim measures. Parties accustomed to common law systems expect emergency arbitrator procedures as a matter of course. Chilean domestic arbitration law does not provide an emergency arbitrator mechanism equivalent to those found in ICC Rules or Singapore International Arbitration Centre rules. Interim relief in domestic proceedings requires a parallel court application. Parties who draft domestic-only clauses and later need urgent asset preservation must navigate a court process that can take several weeks.
A fourth error concerns the seat of arbitration. Many contracts signed with Chilean counterparties specify "arbitration in Chile" without designating a specific city or institution. This ambiguity can trigger jurisdictional arguments. The seat matters for determining which courts exercise supervisory jurisdiction over the arbitration, which annulment grounds apply, and whether the award will be treated as domestic or foreign by enforcement courts in third countries.
For disputes involving shareholder or governance dimensions, the corporate disputes practice in Chile addresses the intersection of arbitration with Chilean corporate legislation and minority shareholder protections.
To receive an expert assessment of your arbitration strategy in Chile, contact us at info@ferrazwhitmore.com.
Cost ranges and economics of each forum
The economics of arbitration in Chile vary considerably between the two tracks and should inform forum selection at the contract drafting stage.
Domestic arbitration before a Chilean tribunal tends to have lower institutional costs. There are no filing fees payable to an international institution. Arbitrator fees are agreed directly between the parties and the arbitrator, and are governed in part by a fee schedule set under Chilean procedural rules for domestic matters. Legal fees in domestic proceedings are typically lower than in international cases, as the procedural formalities are less demanding. Total costs for a mid-sized domestic dispute – measured in hundreds of thousands of dollars of claimed value – commonly run from tens of thousands to low six figures in legal and arbitrator fees.
International institutional arbitration carries higher upfront costs. ICC filing fees alone reach into the tens of thousands of dollars for claims above a certain threshold, and arbitrator fees under ICC Rules scale with the amount in dispute. For high-value claims, total arbitration costs can reach into the hundreds of thousands of dollars. However, the premium buys procedural predictability, institutional support, scrutiny of the draft award before issue, and an award that is readily enforceable in over 170 jurisdictions under the New York Convention framework.
The break-even calculation favours international institutional arbitration when the following conditions apply: the anticipated claim value is high enough that enforcement in multiple jurisdictions is realistic. the counterparty has assets in jurisdictions other than Chile. or the dispute involves complex cross-border contract interpretation that benefits from internationally experienced arbitrators. Domestic arbitration is often preferable when both parties have assets only in Chile, the dispute is straightforward, and speed matters more than procedural formality.
A frequently underestimated cost is the exequatur process itself. If a party wins an international award and seeks to enforce it against Chilean assets, the recognition proceeding before Chilean courts requires separate legal representation and can take one to one and a half years. Parties should factor this into the total cost-benefit analysis before opting for a foreign seat.
For a tailored strategy on arbitration forum selection in Chile, reach out to info@ferrazwhitmore.com.
Decision checklist: which forum suits your situation
Before finalising an arbitration clause or selecting a forum for an existing dispute, work through the following questions.
Does the dispute qualify as international under Chilean legislation? If one party is domiciled abroad or performance occurs outside Chile, the international regime is available. If the dispute is purely domestic, the domestic regime applies by default unless the parties have expressly opted into international rules.
Where are the counterparty's assets? If assets are located only in Chile, a domestic award is more efficient to enforce. If assets are spread across multiple jurisdictions, an international award under the New York Convention produces a more portable enforcement instrument.
What is the claimed value relative to institutional costs? For disputes below a certain value threshold. typically below low six figures. the cost of ICC or similar institutional proceedings may consume a disproportionate share of any recovery. Ad hoc arbitration under UNCITRAL rules with a Santiago seat can reduce institutional costs while retaining international procedural standards.
Does the contract specify the type of arbitrator? Verify whether the clause designates a law arbitrator or equity arbitrator. If the clause is silent, legal advice should be obtained before the arbitration begins to determine what the applicable regime will be and whether a court can be asked to appoint a law arbitrator.
Are interim measures likely to be needed? If asset preservation or injunctive relief may be required before or during the arbitration. International institutional rules with an emergency arbitrator provision offer faster access to interim relief than the domestic track. This requires a parallel court application.
Is confidentiality important? Domestic arbitration in Chile is generally confidential by practice. International institutional rules typically include express confidentiality provisions. Court-supervised enforcement proceedings are public in Chile, regardless of which track was used for the arbitration itself.
The arbitration is applicable to your situation if: the underlying contract contains a valid written arbitration agreement. the dispute is of a commercial character. and the subject matter is not excluded from arbitration under Chilean law. categories such as certain family law matters. Some real property disputes. Additionally, matters reserved to state courts by mandatory legislation are not arbitrable.
Frequently asked questions
Q: How long does a commercial arbitration in Chile typically take?
A: A local arbitration before a Chilean arbitral tribunal generally concludes within 12 to 24 months, depending on the complexity of the dispute and the availability of appointed arbitrators. International proceedings under ICC Rules or UNCITRAL rules seated outside Chile typically run 18 to 36 months from filing to final award. Cross-border enforcement adds further time after the award is issued.
Q: Is a foreign arbitral award automatically enforceable in Chile?
A: No. Chile is a party to the New York Convention, so foreign awards benefit from a broadly enforced international framework. However, enforcement still requires a recognition procedure before Chilean civil courts, known locally as exequatur. Courts will review whether the award meets convention requirements and does not conflict with Chilean public policy.
Q: Can parties choose international arbitration rules for a dispute that is purely domestic in Chile?
A: A common misconception is that ICC Rules or UNCITRAL rules are reserved for cross-border disputes. In practice, Chilean commercial parties are free to select institutional rules from any recognised international body, even when both parties are Chilean, provided the arbitration agreement expressly incorporates those rules. The seat of arbitration can remain Santiago while still applying international procedural standards.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our team combines Portuguese civil law expertise with English common law tradition to deliver cross-border legal solutions in commercial arbitration and dispute resolution. In Chile and across Latin American markets, we advise international investors, multinational corporations, and in-house legal teams on arbitration strategy, clause drafting, tribunal constitution, and award enforcement across both local and international forums. Engaging a lawyer in Chile with genuine cross-border arbitration experience is a material advantage when disputes involve multiple legal systems. As an international law firm in Chile and Iberian markets, Ferraz & Whitmore brings practitioners with experience in ICC, UNCITRAL, and domestic proceedings before Chilean arbitral tribunals. The firm's Americas practice covers 46 jurisdictions, supported by a network of local counsel across civil law systems. To discuss your arbitration matter in Chile, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.