ISDA Submits Paper on FRTB Rules Implementation to Brazil's Central Bank

ISDA News

Published March 24th, 2026

Detected March 26th, 2026

Summary

ISDA has submitted a paper to the Banco Central do Brazil (BCB) regarding the implementation of the Fundamental Review of the Trading Book (FRTB) rules. The paper identifies specific aspects of Brazil's FRTB implementation that could be refined to enhance international alignment and operational efficiency for globally active institutions.

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What changed

ISDA has submitted a paper to the Banco Central do Brazil (BCB) on March 24, 2026, concerning the implementation of the Fundamental Review of the Trading Book (FRTB) market risk framework. The paper highlights that while the FRTB aims to strengthen prudential standards, certain jurisdictional choices in Brazil's implementation could lead to increased operational and technological complexity for internationally active institutions. ISDA suggests refinements to aspects such as alternative sensitivities, curvature risk, calendar and tenor conventions, and foreign exchange shock calibration to improve international alignment and operational efficiency.

This submission is a non-binding recommendation aimed at influencing the final implementation of FRTB in Brazil. Financial institutions operating globally and in Brazil should be aware of these recommendations, as their adoption could impact operational requirements and risk capital calculations. While no immediate compliance deadline is set by this paper, it signals potential future adjustments to Brazil's regulatory framework for market risk, which may require firms to adapt their systems and processes to align with international best practices and Basel III standards.

What to do next

Review ISDA's recommendations for FRTB implementation in Brazil.
Assess potential operational and technological impacts of Brazil's current FRTB approach.
Monitor BCB's response to ISDA's paper for potential regulatory adjustments.

Source document (simplified)

Risk & Capital
Risk & Capital
ISDA Paper on FRTB Rules in Brazil

ISDA Paper on FRTB Rules in Brazil

On March 24, ISDA submitted a paper to Banco Central do Brazil’s (BCB) on its implementation of the revised market risk framework under the Fundamental Review of the Trading Book (FRTB), which represents an important step toward strengthening prudential standards and enhancing supervisory comparability.

At the same time, certain jurisdiction specific methodological choices, limited optionality and prescriptive implementation requirements could materially increase operational and technological complexity, particularly for internationally active institutions operating global trading books. While such features may appear limited in isolation, their combined effect can require parallel calculation frameworks, reduce economies of scale and increase operational risk, without delivering commensurate improvements in risk sensitivity or supervisory insight.

This paper identifies specific aspects of the Brazilian FRTB implementation where refinements could support a more effective and sustainable framework. These include the treatment of alternative sensitivities and curvature risk, calendar and tenor conventions, foreign exchange shock calibration and several other technical and drafting issues. The recommendations outlined are intended as targeted adjustments that remain consistent with the Basel framework and international practice and would materially improve international alignment, operational efficiency,# and the ongoing resilience of market risk capital implementation in Brazil.

Tags:

Basel III, Brazil, Capital, Fundamental Review of the Trading Book (FRTB)

Documents (1)

ISDA Paper on FRTB Rules in Brazil(pdf)

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ISDA Paper on FRTB Rules in Brazil

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