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Legal Guides  /  Dispute Resolution · 2026 Guide

Arbitrating in Brazil

Faster, confidential and more easily enforceable, if you get the clause right.

Brazilian arbitration law is well established, internationally aligned and directly enforceable. It is also unforgiving of poorly drafted clauses and preventable procedural errors. This guide covers what you need to know before you agree to arbitrate.

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Quick Read
Mature legal framework:
Brazilian arbitration has been governed by the Arbitration Act (Law 9,307/1996) since 1996, significantly strengthened in 2015. Domestic awards are directly enforceable as final judgments without court confirmation.
Speed advantage is real:
A Brazilian arbitration at a major institution typically resolves in 12 to 24 months. The equivalent commercial dispute through the state courts takes 4 to 8 years at first instance, with further years on appeal.
Only disposable patrimonial rights:
Arbitration is available only for disputes involving direitos patrimoniais disponíveis. Consumer contracts, most employment disputes and matters involving public order cannot be arbitrated.
The clause is everything:
An invalid, pathological or ambiguous arbitration clause will send the dispute to the courts. Drafting it correctly, including seat, institution, arbitrators and language, is non-negotiable.
Foreign awards need STJ recognition:
A foreign arbitral award cannot be enforced in Brazil until it is recognised by the Superior Court of Justice (STJ). Brazil is a New York Convention signatory; the grounds for refusal are narrow.
Courts assist, not interfere:
Brazilian courts support arbitration, including granting interim relief before or during proceedings. Once a tribunal is constituted, courts decline jurisdiction on the merits.

Brazil has one of the most active arbitration markets in Latin America. The framework rewards preparation.

The Brazilian Arbitration Act (Law 9,307/1996) transformed dispute resolution in Brazil. Before its enactment, arbitration clauses were unenforceable because parties could always walk away and litigate. The Act made arbitration agreements binding, provided for the direct enforceability of domestic awards without court ratification, and established the framework that has since made Brazil one of the leading arbitration seats in Latin America.

The Act was updated in 2015 by Law 13,129/2015, which extended arbitrability to disputes involving the public sector, clarified the rules on arbitrator challenges, codified the courts’ powers to grant interim relief before the constitution of the tribunal, and resolved several procedural uncertainties that had arisen in the Act’s first two decades.

Brazil is also a signatory to the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards, ratified in 2002, which provides the framework for the recognition of foreign awards before the STJ.

For commercial parties operating in or transacting with Brazil, arbitration is not simply an alternative to litigation: for many disputes it is the only realistic path to a timely resolution. Brazilian court proceedings in commercial cases routinely take five to ten years including appeals. An institutional arbitration with a well-drafted clause and an experienced tribunal can deliver a final, enforceable award in under two years.

The critical condition is that the arbitration agreement is validly concluded and correctly drafted. Brazilian courts apply strict requirements to arbitration agreements, and a clause that fails on scope, form or content will be declared void, sending the dispute to the very court system the parties sought to avoid. This guide addresses the legal framework, drafting requirements, process, institutions, awards and enforcement, and the most common mistakes.

The pathological clause problem

A “pathological” arbitration clause is one that is defective in a way that prevents arbitration from proceeding or that creates jurisdictional uncertainty. Common pathologies in Brazilian practice include: clauses that name a non-existent institution, clauses that provide for arbitration of “some” disputes and litigation for “others” without specifying which, clauses that are silent on seat, and clauses that impose conditions precedent drafted so loosely that neither party can initiate proceedings. Pathological clauses frequently end up in costly court proceedings to determine whether arbitration can proceed at all.

The Legal Framework

Three pillars, all interlocking

Domestic Law
The primary domestic statute governing the validity of the arbitration agreement, tribunal powers, procedure, award form, annulment grounds, and recognition of foreign awards. Broadly aligned with the UNCITRAL Model Law.
International
Governs recognition and enforcement of foreign awards in Brazil. The grounds for refusal are those in Article V: procedural defects, invalidity of the agreement, excess of jurisdiction, due process violation, and public policy conflict.
Civil Procedure
Requires courts to extinguish proceedings when a valid arbitration agreement exists, and defines court support for arbitration including interim relief and enforcement of domestic and foreign awards.
Arbitrability

What can and cannot be arbitrated in Brazil

The test: patrimonial rights (direitos patrimoniais disponíveis)

Under Article 1 of the Arbitration Act, arbitration is available for disputes involving patrimonial rights that the parties are legally free to dispose of by contract. This covers the vast majority of commercial disputes: contract claims, corporate disputes, construction, M&A, financial transactions, IP licensing and international trade.

The scope of arbitrability in Brazil has expanded significantly since 1996. The 2015 amendments confirmed that public sector entities can agree to arbitrate disputes arising from commercial contracts, ending a long-running debate.

The most important excluded categories are consumer disputes (where the Consumer Defence Code prevents pre-dispute arbitration clauses), most employment disputes, and matters involving rights that cannot be waived or settled by contract, such as family status and criminal liability.

Arbitrable
  • ✓Commercial contracts: supply, services, construction, distribution
  • ✓Corporate disputes: shareholder agreements, M&A, joint ventures
  • ✓Intellectual property licensing and infringement (between contracting parties)
  • ✓Financial contracts, derivatives, banking disputes
  • ✓International trade, shipping and commodity contracts
  • ✓Real estate and construction disputes
  • ✓Public sector contracts involving commercial activities (since 2015)
  • ✓Insurance and reinsurance
Not arbitrable
  • ✗Consumer disputes where the consumer did not freely agree to arbitration after the dispute arose
  • ✗Employment disputes (generally), except for senior employees above the threshold under the 2017 Labour Reform
  • ✗Criminal matters and public order violations
  • ✗Family law: divorce, custody, inheritance of forced heirship rights
  • ✗Rights that cannot be waived by contract under mandatory law
The Arbitration Agreement

Drafting the arbitration clause: what must be right

Form and scope

An arbitration clause (cláusula compromissória) must be in writing, in the main contract or expressly incorporated. For adhesion contracts, the clause must be initialled separately or it is void.

The scope must be clearly defined. Brazilian courts interpret scope narrowly when the clause is ambiguous: doubts are resolved in favour of judicial jurisdiction.

Institutional vs ad hoc

A clause must specify whether the arbitration will be institutional or ad hoc. Institutional arbitration is strongly preferred: the institution’s rules fill procedural gaps and provide appointment mechanisms.

Ad hoc arbitration is permitted but requires detailed procedural rules; poorly drafted ad hoc clauses frequently generate disputes requiring court intervention.

Critical: seat of arbitration
Seat (sede da arbitragem)

The seat determines which country’s law governs procedure, which courts supervise, and whether the award is domestic or foreign for enforcement. A Brazilian seat produces a directly enforceable domestic award; a foreign seat requires STJ homologation.

The seat need not be the physical hearing location: it is a legal concept, not a venue.

Drafting checklist
Governing law, arbitrators, language

Always specify: the governing law of the contract; the number of arbitrators (one or three; three is standard for complex disputes); and the language, which defaults to Portuguese if unspecified.

Useful additions: an expedited procedure for lower-value claims, a consolidation provision for related agreements, and pre-arbitration steps that don’t become a delay tactic.

The Process

From notice of arbitration to award: the six stages

The timeline below reflects a standard institutional arbitration under Brazilian institutional rules. Timings vary by institution, case complexity and the parties’ level of cooperation. The overall process is typically complete in 12 to 24 months.

01
Weeks 1-4
Notice of arbitration and response
Proceedings commence when the claimant files a notice of arbitration with the chosen institution. The institution registers the request, notifies the respondent, and requests advance payment of fees. Failure to pay results in suspension or termination.
02
Weeks 4-12
Appointment of arbitrators
Each party nominates one arbitrator; the two agree on a presiding arbitrator or the institution appoints. Arbitrators must disclose conflicts and can be challenged. Once constituted, the tribunal has full jurisdiction.
03
Month 3
Terms of reference (ata de missão)
The tribunal and parties execute the terms of reference, fixing the scope of the tribunal’s jurisdiction, the issues to be determined, applicable law, seat, and procedural calendar. Getting this right is strategically critical.
04
Months 4-14
Written submissions and document production
Two rounds of written submissions with supporting documents and witness statements. Document production is targeted, typically under the IBA Rules, far narrower than common law discovery, with no general disclosure obligation.
05
Months 14-18
Evidentiary hearing
Unlike Brazilian court proceedings, arbitral hearings allow cross-examination of witnesses and experts. Hearings in complex cases run several days; post-hearing briefs are usually permitted.
06
Months 18-24
The award
The tribunal issues a final, reasoned, signed award (sentença arbitral), directly enforceable without ratification for domestic awards. The tribunal may issue partial awards on jurisdiction or specific issues along the way.
Interim relief before and during arbitration

Brazilian courts may grant interim relief (tutela de urgência) before the tribunal is constituted, at the request of a party. Once the tribunal is constituted, it takes over jurisdiction to grant interim measures, though it still requires court assistance to enforce them against a non-compliant party. The penhora online electronic asset freeze remains available through the courts throughout arbitral proceedings.

Arbitral Institutions

Choosing an institution for Brazilian arbitration

International · Paris
The most widely used international institution for cross-border disputes involving Brazilian parties. Its scrutiny mechanism adds quality control not present in most domestic institutions, at a higher cost.
International · New York
Used for disputes with North American parties or where US-law commercial practice is relevant. Rules are flexible and relatively efficient; awards are recognised in Brazil via STJ homologation.
Brazilian · São Paulo
The leading Brazilian arbitral institution by caseload, widely regarded as the highest-quality domestic option for complex commercial disputes. Handles Portuguese and bilingual proceedings.
Brazilian · National
Offices in Belo Horizonte, São Paulo and Brasília, administering a high volume of commercial and construction arbitrations, with a significant presence in infrastructure and energy since 2015.
Brazilian · São Paulo
Associated with one of Brazil’s leading law schools, bringing academic and policy rigour. Active in corporate and financial disputes with specialised sector procedures.
Ad hoc
A well-established set of ad hoc procedural rules without institutional administration, widely used in investment treaty and state-to-state disputes. Rarely used for purely domestic Brazilian disputes.
Awards and Enforcement

From award to enforcement: domestic and international

Domestic awards: directly enforceable

A domestic award is a título executivo judicial under Article 515, VII of the CPC, directly enforceable without court ratification. The court’s role is limited to enforcement; it will not review the merits.

Enforcement is initiated via cumprimento de sentença; the debtor has 15 days to comply voluntarily before penhora online asset freezes can follow.

Foreign awards: STJ homologation

A foreign award must be recognised by the STJ (homologação de sentença arbitral estrangeira) before enforcement, applying the Article V grounds of the New York Convention.

The STJ does not review the merits. Homologation typically takes 12 to 18 months. Brazil applies the Convention without the reciprocity reservation.

Narrow grounds only
Annulment of domestic awards (ação anulatória)

The exclusive grounds under Article 32 of the Arbitration Act: incapacity, invalid agreement, award issued outside the fixed period, excess of jurisdiction, failure to decide all matters, corruption or fraud, and form violations.

Errors of fact or law are not grounds for annulment. The action must be filed within 90 days of receiving the award; annulment actions rarely succeed.

Practical point
Interest, costs and the award

Brazilian tribunals have broad discretion over costs, typically following the losing-party-pays principle but with discretion to apportion differently, unlike the fixed sucumbência formula in court litigation.

Interest commonly follows the taxa Selic where Brazilian law governs; monetary correction may also be awarded to account for inflation.

Confidentiality
Confidentiality of proceedings and awards

Brazilian court proceedings are constitutionally public; arbitral proceedings are private: hearings, pleadings, evidence and awards are confidential unless the parties agree otherwise or disclosure is legally required.

Enforcing an award in the courts will expose limited information through the court record. Parties needing full confidentiality should address this expressly.

Cross-border enforcement
Enforcing Brazilian awards internationally

A Brazilian-seat award is a foreign award elsewhere and enforceable under the New York Convention in any of the 172 signatory states, subject to Article V grounds.

The quality of the award’s drafting materially affects the speed and ease of foreign enforcement.

Common Mistakes

Six mistakes in Brazilian arbitration

01
The pathological clause
Agreeing to arbitrate without a properly drafted clause is worse than not agreeing at all: naming a non-existent institution, omitting the seat, optional rather than mandatory language, and unsatisfiable conditions precedent are the most common defects.
02
Treating the arbitration clause as boilerplate
Clauses copied from unrelated precedent may be entirely inappropriate for the transaction at hand. Seat, governing law, arbitrator count, language and scope should be deliberate choices.
03
Failing to pay institutional fees on time
Institutions require advance payment of registration and arbitrator fees; missed deadlines suspend and can terminate proceedings. The financial commitment should be approved before filing.
04
Missing the 90-day annulment deadline
The right to challenge a domestic award is extinguished 90 days after receipt, with no extension provision. Assessment of annulment grounds should begin immediately on receiving an adverse award.
05
Expecting common law document production
Brazilian institutional arbitration provides targeted, specific document production, not general disclosure. Requests for “all documents relating to the project” will be refused.
06
Nominating an arbitrator without checking independence
Failing to verify a nominee’s disclosure obligations and prior relationships exposes a party to a challenge that can delay proceedings and, if successful, require reconstitution of the tribunal.
Further Issues

Public sector contracts, consumer disputes and investment arbitration

Arbitration with the Brazilian public sector

The 2015 amendments expressly authorised arbitration of commercial contracts entered into by public entities, extending the Act’s benefits to infrastructure, energy, PPP and procurement disputes.

Public sector arbitration requires Portuguese-language proceedings, public awards, and institutions meeting standards set by applicable legislation. The CCAF provides an administrative arbitration mechanism within the federal executive.

Consumer contracts: pre-dispute clauses are void

The Consumer Defence Code prohibits pre-dispute arbitration clauses imposed on consumers in standard form contracts; such a clause is void. A consumer may agree to arbitrate after a dispute has arisen.

Companies in B2C sectors, including digital platforms, financial services, insurance, retail and telecoms, cannot use standard-terms arbitration clauses to exclude consumer disputes from the courts.

Employment disputes: limited arbitrability

The 2017 Labour Reform introduced a narrow exception: employees earning at least twice the social security ceiling (~BRL 14,000/month) may agree to arbitrate, with genuine consent and not as a condition of employment.

This exception’s limits are still being defined by the Superior Labour Court (TST); arbitration of employment disputes remains uncommon outside senior executive arrangements.

Investment treaty arbitration
Investment arbitration and Brazil

Brazil has not ratified BITs with investor-state dispute settlement. Since 2015 it has used Cooperation and Facilitation Investment Agreements (CFIAs), which favour state-to-state settlement over investor-state arbitration.

Foreign investors generally lack treaty-based investor-state arbitration access; recourse is through domestic courts or a valid contractual arbitration clause.

Our Team

Arbitration experience across Brazilian and international proceedings

Fabiano Deffenti
Fabiano Deffenti
Senior Partner

Fabiano Deffenti is Senior Partner at Deffenti Lawyers and is admitted to practise in Brazil and Australia, enrolled as a barrister and solicitor in New Zealand, and licensed as an attorney-at-law in New York. He is co-editor of Introduction to Brazilian Law (Wolters Kluwer) and editor of LawsofBrazil.com.

Deffenti Lawyers advises on arbitration clause drafting, institution selection, proceedings strategy, arbitrator challenges, award enforcement and the recognition of foreign awards before the STJ. We act for Brazilian and international parties in domestic and cross-border disputes.

Get Advice

Drafting an arbitration clause or facing a dispute?

Whether you are negotiating a contract, assessing an existing clause, or managing an active arbitration, early advice is the most effective investment.

✓Arbitration clause reviewed for validity, scope and institution
✓Seat of arbitration confirmed and its implications understood
✓Arbitrability of the dispute confirmed (subject matter, party type)
✓Consumer or employment restrictions assessed
✓Institutional fees estimated and approved before filing
✓Arbitrator candidates identified and conflicts-checked
✓Document record reviewed and production strategy prepared
✓For foreign awards: STJ homologation pathway mapped
✓90-day annulment deadline calendared (if receiving an adverse award)
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This page is a summary only and does not constitute legal advice.

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