Tale as Old as Time and Yet Constantly Renewed: Recent Brazilian Debates on the Control of Arbitral Awards, now in Notarial and Succession Law

A 2023 PwC Research revealed that family-owned businesses dominate the Brazilian productive landscape, accounting for approximately 90% of companies in the country. In such a context, contentious disputes — and, for the purposes of this article, arbitrations concerning probate, asset partition, and family property matters (inventário and partilha) — are virtually inevitable. These proceedings have become fertile ground for broader institutional and jurisdictional debates, often reviving longstanding discussions on the foundational principles of Brazilian arbitration rules.

This background is particularly relevant to the present article, which aims to comment on a recent controversy before the Brazilian National Council of Justice (CNJ—the body responsible for overseeing the administrative and financial activities of the Brazilian judiciary and ensuring compliance with the professional duties of judges), in Administrative Control Proceeding No. 0001153-87.2026.2.00.0000, which addressed whether notarial and registral authorities may refuse to give effect to arbitral awards in the formalization of probate and estate partitions and, more broadly, brought renewed attention to longstanding debates over the proper limits of institutional control over arbitration in Brazil.

This article proceeds in three parts. Part I discusses the decision at issue, offering context on its relevance to the use of arbitration as a means of resolving disputes related to probate and estate partition proceedings in Brazil. Part II situates this controversy within the broader legal panorama of arbitration in Brazil, examining the mechanisms of control over arbitral awards and the boundaries between arbitrability and public interest, particularly the respective roles of arbitral tribunals, registral authorities, and the Judiciary. Part III offers concluding remarks, addressing the practical implications of the decision for estate planning and arbitration practitioners going forward.

The Decision at Issue

In Brazil, arbitration may serve as a mechanism for resolving consensual probate and estate partition matters among legally competent heirs acting in agreement, particularly with respect to disputes over the valuation, division, and allocation of estate assets. Once the arbitral tribunal renders its award, the parties may seek its recognition before the competent registry and judicial authorities to implement the transfer of assets.

However, on 23 February 2026, the General Inspectorate of Justice of the State of Paraíba issued a regulatory directive holding that the formalization of probate and estate partition proceedings through arbitral awards is legally impermissible. The directive concluded that this practice lacks statutory authorization and alleged conflict with Article 610 of the Brazilian Code of Civil Procedure, which governs judicial and extrajudicial probate proceedings, and Article 852 of the Civil Code, which provides that rights concerning future inheritance cannot be submitted to arbitration.

On 27 April 2026, CNJ (National Council of Justice) Councillor Rodrigo Badaró declared that directive invalid, because, although formally framed as a regulatory directive addressed to registral activity, the decision did not confine itself to examining the extrinsic validity of titles submitted for registration. Instead, it advanced an abstract, ex ante determination regarding the inadmissibility of arbitration as a means of resolving probate and estate partition disputes — thereby amounting to a substantive pronouncement on the legal admissibility of arbitral awards by reason of their subject matter.

While further developments in the administrative proceeding before CNJ are still expected, some preliminary observations may already be advanced. Notably, although new actors — such as notarial and registral authorities — have now entered the broader landscape of arbitration in Brazil (see here), the underlying debates are far from novel, as will become apparent below.

The Legal Panorama: Mechanisms of Control of Arbitration Awards and Public Interest

At first glance, the controversy before the CNJ may appear to concern a relatively narrow issue: whether land registry and notarial authorities may refuse to formalize probate and estate partition proceedings based on arbitral awards. Upon closer examination, however, the case raises a much broader and familiar debate in Brazilian law: who ultimately controls the boundaries of arbitration?

While the actors involved may change, the underlying tension remains remarkably constant. Whenever a public authority seeks to limit the effects of an arbitral award based on concerns regarding arbitrability or public policy, the debate inevitably shifts from the specific dispute to the institutional mechanisms through which arbitration may be controlled.

The Brazilian Arbitration Act permits arbitration of disputes involving disposable patrimonial rights. The existence of family or succession elements does not automatically remove a dispute from the scope of arbitration. On the contrary, Brazilian legislation distinguishes personal status issues, which remain non-arbitrable, from patrimonial disputes arising out of family and succession relationships. For instance, article 612 of the Brazilian Code of Civil Procedure allows legal controversies arising during probate proceedings to be resolved through ordinary proceedings, a provision that has been understood as compatible with the submission of patrimonial disputes to arbitration.

The bottom line is this: the Brazilian legal framework leaves considerable room for probate and estate partition proceedings to be formalized through arbitral awards. Yet arbitrability is only part of the equation. Even if a dispute falls outside the scope of arbitration, who is entitled to make that determination — and at what stage?

According to the Inspectorate, registral authorities are entitled to make that determination themselves.

That orientation, however, overlooks a fundamental principle of Brazilian arbitration law: once jurisdiction has been validly conferred upon an arbitral tribunal, the tribunal has full authority to decide the dispute. Any subsequent review of the award is ex post, exceptional, and must occur through the mechanisms expressly provided by the Brazilian Arbitration Act. Accordingly, the role of registral authorities must be circumscribed. Registral review may encompass only the formal and extrinsic validity of the title submitted for registration — never the substantive reasoning underlying the arbitral award itself.

This conclusion is further supported by the principle of Kompetenz-Kompetenz, enshrined in article 8 of the Brazilian Arbitration Act, under which the arbitral tribunal itself has the power to rule on its own jurisdiction, including any objections relating to the existence, validity, or scope of the arbitration agreement. If even the parties themselves cannot unilaterally oust the tribunal’s authority to decide jurisdictional matters, it follows a fortiori that administrative bodies — entirely external to the arbitral proceeding — cannot assume such a prerogative.

In matters involving adverse possession (usucapião), the CNJ itself has previously adopted a different approach, holding that arbitral awards recognizing original acquisition of title cannot be registered. The distinction is instructive. Unlike probate disputes involving patrimonial rights among identified parties, adverse possession proceedings require publicity and protection of third-party interests — concerns that directly affect arbitrability itself.

The same rationale cannot be transposed to the guidance issued by the General Inspectorate of Justice of the State of Paraíba. That directive effectively instituted a form of ex ante control over arbitral awards, treating arbitration as inherently unsuitable for probate and estate partition proceedings and categorically refusing arbitral titles by reason of their subject matter alone.

Concluding Remarks

It is noteworthy that Brazilian institutions appear to have reached a sufficient degree of maturity to allow different stakeholders to engage openly in discussions concerning the proper limits of arbitration.

Councillor Badaró’s decision resists categorical prohibitions in contexts that demand a more nuanced and case-specific assessment. At the same time, it reinforces the understanding that judicial control over arbitral awards must remain confined to the mechanisms expressly provided under the Brazilian Arbitration Act. The decision thus reaffirms that administrative and regional bodies must not assume functions that belong to the Judiciary, nor may they substitute themselves for the arbitral tribunal in assessing the merits of disputes submitted to arbitration.

From a practical standpoint, the controversy carries concrete implications for estate planning and arbitration practitioners. When drafting arbitration clauses in wills or other estate planning instruments, practitioners must carefully delineate the scope of arbitrable matters—distinguishing patrimonial disputes, which remain subject to arbitration, from status issues, which do not. Notarial and registral authorities, in turn, must confine their review to the formal and extrinsic validity of arbitral awards, without exceeding their institutional competence. A clear understanding of these boundaries will prove essential as arbitration continues to expand into new fields, ensuring that each stakeholder operates within its proper sphere of authority.

Some tales, no matter how old, must still be told—even as new actors enter the scene and emerging discussions appear to test the limits of Brazilian arbitration’s traditional cornerstones. The challenge ahead lies in ensuring that the expansion of arbitration into new fields, including succession and notarial law, is met with institutional frameworks capable of accommodating complexity without sacrificing the foundational guarantees that have made arbitration a credible and effective mechanism for dispute resolution in Brazil.