International Arbitration in Brazil: Legal Framework, Institutions and Practice

Arbitration clauses were difficult to enforce, and the judiciary treated arbitration with suspicion. The 1996 Act fundamentally changed the legal landscape, but its full potential was unlocked only in December 2001, when the Supreme Court of Brazil (Supremo Tribunal Federal — STF) upheld the constitutional validity of the Act’s key provisions in the landmark SE 5.206 decision, confirming that the binding effect of arbitration clauses and the direct enforceability of awards without judicial ratification were compatible with the Brazilian Constitution.

The subsequent two decades saw consistent legislative reinforcement — most notably through the 2015 reform (Law 13.129/2015), which extended arbitration expressly to the public administration, reinforced the powers of emergency arbitrators, and introduced electronic proceedings — and institutional development that brought Brazil’s leading arbitration chambers to international standards of quality and efficiency. Today, Brazilian parties regularly appear in ICC, ICSID, LCIA, and ICDR proceedings, and foreign investors in Brazil routinely include arbitration clauses in their investment agreements, shareholders’ agreements, and commercial contracts as a matter of course.

The Legal Framework

The primary source of arbitration law in Brazil is Law 9.307/1996, as amended by Law 13.129/2015. The Act is comprehensive and covers all principal aspects of the arbitration process: the arbitration agreement (both the arbitration clause and the submission agreement), the arbitral tribunal’s constitution and jurisdiction, the conduct of proceedings, the arbitral award and its res judicata effects, and the grounds for challenging or annulling awards. Brazil has not adopted the UNCITRAL Model Law on International Commercial Arbitration, but its Arbitration Act reflects many of the same principles and achieves broadly comparable outcomes.

The Arbitration Agreement

Brazilian law recognizes two forms of arbitration agreement: the arbitration clause (cláusula compromissória), which is inserted in a contract before any dispute arises and commits the parties to arbitrate future disputes, and the submission agreement (compromisso arbitral), which is entered into after a dispute has arisen and submits a specific, existing dispute to arbitration. The arbitration clause is by far the more common instrument in commercial practice. Under Article 4 of the Arbitration Act, an arbitration clause must be written — whether contained in the body of the contract or in a separate document — and must refer expressly to the contract to which it relates.

A critical distinction in Brazilian arbitration practice is between the so-called “full” (cheia) and “empty” (vazia) arbitration clause. A full clause specifies the arbitral institution, the applicable rules, and the number of arbitrators, allowing a party to initiate arbitration directly without further agreement. An empty clause merely refers to arbitration in general terms, without identifying the institution or rules — which means that, if the parties cannot agree on these elements after the dispute arises, the claimant must seek judicial assistance under Article 7 of the Act to have the clause completed. The practical implication is clear: drafting a full arbitration clause at the time of contracting is strongly advisable to preserve the efficiency advantage that arbitration is meant to provide. A detailed analysis of both clause types — and the most common drafting pitfalls — is provided in the companion article on arbitration clauses in this series.

Arbitrability

Under Article 1 of the Brazilian Arbitration Act, arbitration is available for disputes concerning available patrimonial rights — that is, rights of an economic nature that the parties are free to waive or assign. This criterion of arbitrability is broad and encompasses the great majority of commercial disputes: contract disputes of all kinds, corporate matters involving shareholders’ rights, M&A disputes, intellectual property licensing, real estate transactions, and disputes arising from infrastructure and energy contracts, among others. Disputes involving non-waivable rights — such as family status, non-negotiable consumer rights under certain circumstances, or matters reserved to the exclusive jurisdiction of state courts — fall outside the scope of arbitration.

Since the 2015 reform, the Arbitration Act expressly extends arbitrability to disputes involving the direct and indirect public administration over available patrimonial rights — a development of great significance for infrastructure, concession, and public-private partnership contracts, as discussed in the companion article on arbitration in public contracts.

The Arbitral Award

Under Article 31 of the Arbitration Act, a domestic arbitral award — one rendered in Brazil — has the same effect as a final judgment of the state courts and constitutes an enforceable title that can be directly executed before the competent court without any judicial ratification or homologation. This direct enforceability, which distinguishes the Brazilian system from older arbitration regimes that required judicial confirmation, is one of the most significant practical advantages of arbitration in Brazil.

The grounds for challenging a domestic arbitral award are set out exhaustively in Article 32 of the Act and are limited to formal and procedural defects — nullity of the arbitration agreement, lack of impartiality of an arbitrator who should have been disqualified, failure to give proper notice to a party, decision on matters beyond the scope of the arbitration agreement, failure to state reasons, and violation of the formal requirements of Article 26. Brazilian courts do not review the merits of arbitral awards, and attempts to relitigate the substance of the dispute under the guise of annulment proceedings are routinely rejected. This robust non-interference with arbitral decisions on the merits is a cornerstone of Brazil’s pro-arbitration legal culture.

Domestic and Foreign Awards: a Critical Distinction

A feature of Brazilian arbitration law that frequently surprises foreign practitioners is the definition of what constitutes a “foreign” arbitral award for purposes of recognition and enforcement. Under Brazilian law, the critical criterion is the territorial seat of the arbitration — not the nationality of the parties or the law governing the merits. An award is foreign if it was rendered outside Brazilian territory; an award rendered in Brazil — even in a proceeding between two non-Brazilian parties applying a non-Brazilian law — is a domestic award.

This distinction has significant practical consequences. A domestic award is enforced directly before the Federal Courts of first instance with jurisdiction over the debtor’s assets, without any prior recognition procedure. A foreign award, by contrast, must first be recognized (homologated) by the Superior Court of Justice (Superior Tribunal de Justiça — STJ) before it can be enforced in Brazil. Recognition follows the standards of the New York Convention, to which Brazil acceded in 2002 (Decree 4.311/2002), and the STJ’s track record on recognition of foreign awards is consistently pro-enforcement, with refusals limited to genuine violations of Brazilian public policy or manifest procedural irregularities.

Practical implication for foreign investors: Choosing Brazil as the arbitral seat for a dispute with a Brazilian counterparty eliminates the recognition step and enables direct enforcement of the award — a significant advantage in terms of speed and predictability. Choosing a foreign seat provides the benefit of a neutral forum and the flexibility of international procedural rules, at the cost of the additional recognition step before the STJ. Both options are commercially sound; the choice should be driven by the specific circumstances of the transaction and the parties involved.

The New York Convention in Brazil

Brazil acceded to the Convention on the Recognition and Enforcement of Foreign Arbitral Awards — the New York Convention — through Decree 4.311/2002, with retroactive effect from June 2002. Brazil made no reservations upon accession, meaning that the Convention applies to awards from all contracting states regardless of whether they are commercial in nature. The Convention’s pro-enforcement framework — which places the burden of demonstrating grounds for refusal on the party opposing recognition — is fully operative in Brazil and has been consistently applied by the STJ in its recognition proceedings.

The STJ has built a substantial body of case law on recognition of foreign arbitral awards, with the overwhelming majority of applications being granted. The grounds for refusal applied by the STJ track the Convention’s Article V exhaustively — the court has consistently refused to use the public policy exception as a vehicle for merits review, holding that the exception applies only to awards that violate fundamental principles of the Brazilian legal order, such as due process and the right to be heard. This disciplined approach has made Brazil a reliable jurisdiction for enforcement of foreign awards and has contributed to the confidence of foreign investors in the effectiveness of international arbitration as a dispute resolution mechanism in Brazilian transactions.

One area deserving particular attention is the enforcement of awards against Brazilian state entities and state-owned companies. While the legal framework authorizes arbitration with the public administration for available patrimonial rights, the execution of monetary awards against public entities is subject to the constitutional regime of precatórios — a sequential payment system for state debts — which means that enforcement of a monetary award against a government body, even after STJ recognition, follows the court-ordered payment queue and may take years to result in actual payment. This structural feature of Brazilian public law is independent of arbitration and applies equally to judicial judgments, but it must be factored into the risk assessment of any transaction involving Brazilian government counterparties.

Leading Arbitration Institutions in Brazil

Brazil hosts a number of specialized arbitration institutions, several of which have achieved international recognition for the quality of their administration, the caliber of their arbitrator panels, and the sophistication of their procedural rules. For cross-border disputes involving Brazil, the choice of institution is a decision of strategic importance that should be made with careful consideration of the specific characteristics of the transaction and the likely nature of any future dispute.

CAM-CCBC

The Center for Arbitration and Mediation of the Brazil-Canada Chamber of Commerce (CAM-CCBC) is one of the most internationally recognized Brazilian arbitration institutions, with a strong track record in cross-border disputes and a roster of arbitrators with international training and experience. The CAM-CCBC’s rules provide for proceedings in multiple languages — including English — and its administrative practices are aligned with international standards for institutions handling complex commercial disputes. It is the institution of choice for many cross-border transactions involving Brazilian and foreign parties, particularly in the energy, infrastructure, and M&A sectors.

CAMARB

The Brazilian Business Mediation and Arbitration Chamber (CAMARB) is one of Brazil’s most active arbitration institutions by caseload, with consolidated expertise in domestic commercial and infrastructure disputes. CAMARB offers a well-structured set of procedural rules and maintains a panel of credentialed arbitrators with deep expertise in Brazilian commercial and administrative law. For disputes that are primarily domestic in nature — even those involving foreign parties with operations in Brazil — CAMARB is a highly regarded choice that combines institutional quality with procedural efficiency.

ICC Brazil

The International Chamber of Commerce (ICC) administers arbitrations involving Brazilian parties through its standard institutional framework, with its Court of International Arbitration in Paris. ICC arbitrations involving Brazil are subject to the same procedural rules as any other ICC case — including the Terms of Reference, the scrutiny of awards by the Court, and the possibility of emergency arbitrator procedures — while allowing the parties to choose Brazil as the seat and Portuguese or English as the language of the proceedings. For the largest and most complex cross-border disputes, the ICC remains the first choice of many sophisticated parties, particularly where one or both parties are non-Brazilian entities accustomed to ICC proceedings in other jurisdictions.

CAM-B3

The Market Arbitration Chamber (CAM-B3) is the specialized institution for corporate disputes involving Brazilian listed companies. Companies listed on B3’s premium governance segments — including the Novo Mercado, the most stringent governance tier — are required by the listing rules to submit corporate disputes to the CAM-B3. This obligation extends to the company itself, its controlling shareholders, officers, directors, and members of the fiscal council. The CAM-B3 has developed a body of arbitral practice in corporate governance disputes that has significantly influenced Brazilian corporate law. For a detailed analysis of arbitration in shareholder disputes and listed companies, see the companion article on corporate arbitration in this series.

Institution	Primary Focus	International Capability	Best Suited For
CAM-CCBC	Commercial and cross-border	High — multilingual, international roster	Cross-border M&A, energy, infrastructure with foreign parties
CAMARB	Domestic commercial and infrastructure	Moderate — primarily Portuguese proceedings	High-value domestic disputes, public contracts, concessions
ICC Brazil	International commercial	Very high — global standard	Largest cross-border disputes; parties accustomed to ICC
CAM-B3	Corporate governance	Moderate — focused on listed companies	Shareholder disputes, listed companies, capital markets

The Arbitration Clause in Cross-Border Contracts: Drafting Considerations

Drafting an effective arbitration clause for contracts involving Brazilian and foreign parties requires attention to a set of considerations that go beyond the standard checklist applicable to purely domestic agreements. The choice of seat, language, governing law, number of arbitrators, and institution each carry specific implications in the Brazilian legal context that must be addressed at the drafting stage — not after the dispute has arisen.

Seat of Arbitration

The choice of seat determines whether the award will be treated as domestic or foreign under Brazilian law, with the enforcement consequences described above. It also determines which courts have supervisory jurisdiction over the arbitration — including the power to assist with the constitution of the tribunal, grant interim measures in support of the arbitration, and hear any challenge to the award. A Brazil-seated arbitration is supervised by the Brazilian courts, with all the advantages and potential complexities that this entails. A foreign-seated arbitration — such as one administered by the ICC with Paris as the seat — subjects the proceedings to the law of the seat and requires STJ recognition before enforcement in Brazil.

For purely bilateral transactions between a Brazilian and a foreign party, a Brazilian seat may be preferable for enforcement efficiency, while a neutral foreign seat — New York, Geneva, London, Miami — may be more acceptable to the foreign party concerned about the neutrality of the forum. Neither choice is inherently superior; the decision should reflect the specific risk profile and the relative leverage of the parties in the negotiation.

Language and Governing Law

Brazilian arbitration law allows the parties to freely choose the language of the proceedings and the law governing the merits of the dispute. There is no requirement that an arbitration seated in Brazil be conducted in Portuguese, and contracts between Brazilian and foreign parties frequently specify English as the language of arbitration. The governing law of the arbitration agreement is typically the law of the seat; the governing law of the underlying contract may be different and is separately chosen by the parties.

When Brazilian law governs the merits, mandatory provisions of Brazilian law — including consumer protection rules, labor law protections, and certain provisions of the Civil Code — apply regardless of contractual choice. Brazilian mandatory rules may also apply even when a foreign law governs the contract, if the dispute has sufficient connection with Brazil. For international contracts of significant complexity, legal advice on the interaction between the chosen governing law and Brazilian mandatory rules is advisable before execution.

Number of Arbitrators and Arbitrator Profiles

The choice between a sole arbitrator and a three-member tribunal depends on the value and complexity of the anticipated dispute. For high-value or technically complex disputes — the typical scenario in cross-border commercial and infrastructure contracts — a three-member tribunal is strongly advisable: it reduces the risk of idiosyncratic decisions, provides for collegial deliberation, and allows the parties to choose arbitrators with complementary backgrounds. In a cross-border dispute between a Brazilian and a foreign party, a common structure is for each party to appoint one co-arbitrator of its choice (which may include arbitrators of different nationalities) and for the two co-arbitrators to appoint the presiding arbitrator, who ideally has no nationality connection with either party.

Model Clauses

Each of the leading institutions provides model arbitration clauses in its rules that, if adopted without modification, ensure the validity and workability of the arbitration agreement. For cross-border contracts, institutional model clauses are strongly recommended as the baseline, with additions limited to elements that the standard clause does not address — such as the language, the seat (if not the institution’s default), and the number of arbitrators. Over-drafting arbitration clauses — adding layers of conditions, pre-arbitration procedures, and qualifications to the institution’s standard clause — is one of the most common sources of pathological clauses that undermine the effectiveness of the arbitration agreement. The companion article on arbitration clauses in this series provides a detailed analysis of the elements of an effective clause and the most common drafting pitfalls.

Interim Measures in International Arbitration in Brazil

The Brazilian Arbitration Act, as amended in 2015, provides a modern framework for interim measures in arbitration that is broadly compatible with international best practices. Once the arbitral tribunal has been constituted, it has jurisdiction to order interim measures — injunctions, attachment orders, orders to preserve evidence — that are binding on the parties. Before the tribunal is constituted, or in urgent situations where tribunal action is not timely enough, the Brazilian courts retain concurrent jurisdiction to grant interim measures in support of the arbitration, including at the request of a party even before the arbitration has been formally commenced.

Institutional rules of the leading Brazilian and international institutions also provide for emergency arbitrator procedures, which allow a party to seek urgent relief from a sole emergency arbitrator before the main tribunal is constituted. The CAM-CCBC and the ICC rules provide for emergency arbitrators with the power to issue binding orders, typically within days of the request. Emergency arbitrator orders are treated as interim measures and can be enforced in Brazil through the assistance of the courts if necessary, though the precise mechanism and efficiency of enforcement of emergency arbitrator orders — as distinct from tribunal-ordered measures — continues to be the subject of evolving practice and commentary.

Investor-State Arbitration and Brazil

Brazil’s position on investor-state arbitration has historically been distinctive and, at times, a source of concern for foreign investors. Brazil did not ratify any bilateral investment treaty (BIT) with traditional ISDS (investor-state dispute settlement) clauses and has not acceded to the ICSID Convention, which remains the primary multilateral treaty framework for investor-state arbitration. This stance reflected a long-standing policy position that disputes between foreign investors and the Brazilian State should be resolved under Brazilian law before Brazilian courts.

The policy landscape has evolved significantly since the early 2010s. Brazil has negotiated and ratified a new generation of investment agreements — the so-called Cooperation and Facilitation Investment Agreements (CFIAs or ACFIs) — that adopt a different model: instead of traditional ISDS with direct investor-state arbitration, the Brazilian model provides for state-to-state dispute settlement and an institutional joint committee mechanism for managing investment-related disputes. Brazil has CFIAs in force with several countries, including Angola, Mozambique, Mexico, Chile, Colombia, and Ethiopia, among others.

For foreign investors, the practical implication is that treaty-based investor-state arbitration against Brazil under a BIT with traditional ISDS clauses is generally not available. Disputes between foreign investors and Brazilian government entities are subject to Brazilian law and Brazilian courts — or, for contractual disputes involving government contracts, to the arbitration mechanism provided in the contract itself, under the framework of Law 14.133/2021, as discussed in the companion article on arbitration in public contracts. This structural feature of Brazil’s investment framework makes the careful drafting of the dispute resolution provisions in investment contracts — concession agreements, PPP contracts, shareholder agreements with state entities — a matter of particular importance.

Practical Guidance for Foreign Investors

Foreign companies operating in or investing in Brazil should approach dispute resolution planning as an integral part of their entry strategy, not as a boilerplate provision to be addressed at the end of contract negotiations. The following checklist summarizes the key elements of effective arbitration planning for cross-border transactions involving Brazil.

Arbitration Planning Checklist — Cross-Border Transactions Involving Brazil
✓	Include a full arbitration clause — identifying institution, rules, seat, language, and number of arbitrators — in every contract of significant value or complexity.
✓	Choose the arbitral seat with enforcement in mind: Brazilian seat for direct enforcement; foreign seat for maximum neutrality, with the recognition step before the STJ.
✓	Specify the language of the proceedings (Portuguese or English) explicitly in the arbitration clause.
✓	For contracts involving public entities, verify that the contract or procurement rules authorize arbitration and that the clause complies with the requirements of Law 14.133/2021 (arbitration of right, observance of publicity).
✓	For corporate transactions (shareholders’ agreements, M&A), consider whether the arbitration clause should be complemented by a provision in the articles of association under Article 136-A of the Companies Act.
✓	Assess whether the chosen governing law interacts with Brazilian mandatory rules in ways that could affect the outcome of a future dispute.
✓	Consider including a multi-tiered dispute resolution clause (negotiation → mediation → arbitration) for long-term contracts, joint ventures, and public-private partnerships.
✓	For infrastructure and construction contracts, evaluate the suitability of a dispute board mechanism, especially for projects with FIDIC-based contractual structures.
✓	Adopt the institutional model clause as the baseline and limit customization to elements not addressed by the standard clause.
✓	Obtain Brazilian counsel review of any cross-border arbitration clause before execution — particularly to verify compatibility with Brazilian mandatory rules and public policy requirements.

Frequently Asked Questions on International Arbitration in Brazil

Is arbitration widely used in Brazil?

Yes. Brazil has one of the most active arbitration markets in Latin America. Since the Arbitration Act (Law 9.307/1996) and its constitutional validation by the Supreme Court in 2001, arbitration has become the preferred method for high-value commercial, corporate, and infrastructure disputes. Brazilian parties regularly appear in ICC, CAM-CCBC, and CAMARB proceedings, and Brazil consistently ranks among the top jurisdictions worldwide by number of international arbitration cases.

What is the legal framework governing arbitration in Brazil?

Arbitration in Brazil is governed by Law 9.307/1996 (the Brazilian Arbitration Act), as amended by Law 13.129/2015. The Act covers arbitration agreements, constitution of the tribunal, proceedings, awards, and grounds for challenge. Brazil is also a signatory to the New York Convention (Decree 4.311/2002), which enables enforcement of foreign awards in over 170 countries.

Can foreign companies use arbitration in disputes involving Brazilian parties?

Yes, without restriction. Foreign companies may freely include arbitration clauses in contracts with Brazilian parties, whether the arbitration is seated in Brazil or abroad. Brazilian law imposes no restrictions on the nationality of parties or arbitrators. Disputes involving foreign investors and Brazilian parties are frequently administered by the ICC, CAM-CCBC, or CAMARB, with proceedings in English or Portuguese as agreed by the parties.

How are foreign arbitral awards enforced in Brazil?

Foreign awards are enforced through a recognition procedure before the Superior Court of Justice (STJ), following the New York Convention’s pro-enforcement standards. The STJ reviews only formal requirements — it does not re-examine the merits. Once recognized, the award is enforced before the competent Federal Court. The STJ’s track record is consistently pro-enforcement, with refusals limited to genuine violations of Brazilian public policy or procedural irregularities.

What distinguishes a domestic from a foreign arbitral award under Brazilian law?

The criterion is territorial: an award is foreign if rendered outside Brazil, regardless of the parties’ nationalities. A domestic award is enforced directly before first-instance Federal Courts without prior recognition. A foreign award requires STJ recognition before enforcement. This distinction makes the choice of arbitral seat a strategically significant drafting decision in cross-border contracts involving Brazilian parties.

Which arbitration institutions are most commonly used in Brazil?

The leading institutions are the CAM-CCBC (for cross-border and international disputes), CAMARB (for domestic and infrastructure disputes), ICC Brazil (for the largest cross-border cases), and CAM-B3 (for listed company corporate disputes). Each has different cost structures, arbitrator panels, and procedural rules that should be evaluated when drafting the arbitration clause.

Can parties choose the language and governing law in arbitration seated in Brazil?

Yes. Brazilian law gives parties broad autonomy to choose the language of proceedings (including English), the governing law applicable to the merits, and the procedural rules. There is no requirement that Brazil-seated arbitrations be conducted in Portuguese or apply Brazilian law. Mandatory provisions of Brazilian law apply regardless of choice, and their interaction with the chosen governing law should be assessed by Brazilian counsel.

What are the grounds for annulment of an arbitral award in Brazil?

The grounds are exhaustively set out in Article 32 of Law 9.307/1996 and are limited to formal and procedural defects: nullity of the arbitration agreement; award by a disqualified arbitrator; lack of proper notice; decision beyond the scope of the agreement; failure to state reasons; and violation of formal requirements. Brazilian courts do not review the merits of arbitral awards. Attempts to relitigate the substance of the dispute through annulment proceedings are consistently rejected.

References

• CARMONA, Carlos Alberto. Arbitragem e processo: um comentário à Lei nº 9.307/1996. 4th ed. São Paulo: Atlas, 2023.
• BAPTISTA, Luiz Olavo. Arbitragem comercial e internacional. São Paulo: Lex Editora, 2011.
• ARAÚJO, Nádia de. Direito internacional privado: teoria e prática brasileira. 8th ed. São Paulo: Revolução eBook, 2020.
• CAHALI, Francisco José. Curso de arbitragem. São Paulo: Revista dos Tribunais, 2012.
• LEMES, Selma Maria Ferreira; WALD, Arnoldo (coords.). Arbitragem comercial e internacional: estudos em homenagem aos 25 anos da Lei de Arbitragem. São Paulo: Revista dos Tribunais, 2022.
• BRAZIL. Law 9.307 of September 23, 1996. Brazilian Arbitration Act. Brasília: Presidency of the Republic, 1996.
• BRAZIL. Law 13.129 of May 26, 2015. Amends Law 9.307/1996. Brasília: Presidency of the Republic, 2015.
• BRAZIL. Decree 4.311 of July 23, 2002. Promulgates the New York Convention. Brasília: Presidency of the Republic, 2002.

---

This article has been prepared for information and discussion purposes only and should not be regarded as legal advice for any specific transaction or matter. For analysis of specific situations, consultation with qualified legal counsel is recommended.

© 2026. All rights reserved. Barbieri Advogados.