SEBI Mandates BRSR Value Chain Reporting and Reasonable Assurance for Top Listed Companies from FY 2026-27

Kaustav Chowdhury
4 days ago
9 min read

Introduction

The Securities and Exchange Board of India (SEBI) has progressively strengthened the environmental, social, and governance (ESG) disclosure framework for listed entities in India. Beginning with the Business Responsibility Report (BRR) and transitioning to the comprehensive Business Responsibility and Sustainability Report (BRSR), SEBI has systematically expanded the scope and depth of sustainability disclosures required of India's largest corporations. With FY 2026-27 marking a critical milestone, the top 1,000 listed companies by market capitalisation will now be required to obtain reasonable assurance on BRSR Core disclosures, while value chain reporting requirements have undergone a significant recalibration. This article examines the regulatory developments, their practical implications, and the compliance roadmap for affected companies.

These changes arrive at a time when SEBI has been actively modernising multiple aspects of the securities regulatory framework. Recent initiatives, including amendments to FVCI regulations and updated buyback regulations, reflect SEBI's comprehensive approach to ensuring that India's capital markets remain transparent, well-governed, and aligned with global best practices.

The BRSR Framework: Structure and Scope

The BRSR framework, introduced under SEBI's Listing Obligations and Disclosure Requirements (LODR) Regulations, represents India's most comprehensive sustainability reporting mandate for listed entities. The framework requires the top 1,000 listed companies by market capitalisation to respond to 140 questions spanning the nine principles of the National Guidelines on Responsible Business Conduct (NGRBC).

These 140 questions are classified into two categories:

98 essential indicators (mandatory): These cover areas such as greenhouse gas emissions, energy consumption, waste management, employee well-being, community engagement, and corporate governance practices.
42 leadership indicators (voluntary): These are designed for companies seeking to demonstrate more advanced sustainability practices and deeper commitments beyond baseline compliance.

The BRSR framework is designed to be interoperable with globally accepted reporting standards, including the Global Reporting Initiative (GRI) Standards and the Task Force on Climate-related Financial Disclosures (TCFD) recommendations. This alignment enables Indian listed companies to produce disclosures that are comparable with international peers, facilitating cross-border investment decisions and allowing global investors to evaluate ESG performance on a consistent basis.

Companies that have established robust governance frameworks, including proper board oversight mechanisms under frameworks such as Secretarial Standard SS-1 for board meetings, are better positioned to implement the data collection and reporting processes that BRSR demands. The board of directors bears ultimate responsibility for the accuracy and completeness of sustainability disclosures, making governance infrastructure a critical enabler of BRSR compliance.

BRSR Core: The Assurance Subset

Within the broader BRSR framework, SEBI has identified a subset of approximately 30 Key Performance Indicators (KPIs) that constitute the BRSR Core. These KPIs have been specifically designed to be independently verifiable through third-party assurance processes. The BRSR Core focuses on quantitative and measurable indicators, including greenhouse gas emissions (Scope 1 and Scope 2), water consumption, waste generated and recycled, gender diversity ratios, employee turnover, and certain governance parameters.

The introduction of BRSR Core assurance has followed a phased rollout schedule, progressively expanding the number of companies required to obtain independent verification of their sustainability disclosures:

Top 150 listed companies by market capitalisation: mandatory from FY 2023-24
Top 250 listed companies: mandatory from FY 2024-25
Top 500 listed companies: mandatory from FY 2025-26
Top 1,000 listed companies: mandatory from FY 2026-27

This graduated approach has allowed companies to develop internal capabilities, establish data collection mechanisms, and engage with assurance providers in advance of their respective compliance deadlines. SEBI's approach mirrors global trends, where jurisdictions such as the European Union have adopted similar phased timelines for sustainability reporting assurance under the Corporate Sustainability Reporting Directive (CSRD).

Extension of Reasonable Assurance to Top 1,000 Listed Companies

The FY 2026-27 expansion to the top 1,000 listed companies represents the final phase of the BRSR Core assurance rollout, bringing a significantly larger number of entities within the assurance mandate. This expansion presents both opportunities and challenges for the newly covered companies.

For companies in the 501 to 1,000 market capitalisation bracket, the requirement to obtain reasonable assurance introduces substantial new compliance obligations. These companies must identify and engage qualified assurance providers, establish internal controls over sustainability data, and ensure that their reporting processes meet the standards required for independent verification.

The reasonable assurance standard requires the assurance provider to obtain sufficient appropriate evidence to express a positive opinion on whether the subject matter is presented in accordance with the applicable criteria. This is a higher threshold than limited assurance, which merely requires the practitioner to conclude that nothing has come to their attention suggesting material misstatement. The distinction is significant: reasonable assurance demands more extensive procedures, larger sample sizes, and greater depth of testing across all reported KPIs.

Companies that already maintain strong internal governance structures, including those with established vigil mechanisms and whistleblower policies under Section 177(9), will find that existing compliance infrastructure can be leveraged to support the assurance process. The internal controls, data verification procedures, and governance oversight mechanisms required for whistleblower frameworks share conceptual parallels with the controls needed for sustainability data assurance.

Value Chain Reporting: From Comply-or-Explain to Voluntary

One of the most significant developments in the BRSR landscape has been SEBI's recalibration of value chain ESG disclosure requirements. Originally, value chain ESG disclosures were to become mandatory for the top 250 listed entities on a "comply-or-explain" basis from FY 2024-25. However, recognising the practical difficulties associated with obtaining reliable ESG data from value chain partners, SEBI issued a circular dated March 28, 2025, which changed the value chain ESG disclosure requirement from "comply-or-explain" to fully voluntary.

This decision reflects several practical realities that companies and regulators have encountered during the early phases of BRSR implementation:

Value chain ESG data collection requires listed entities to obtain information from upstream suppliers and downstream distributors, many of whom may be small and medium enterprises without established sustainability reporting processes.
The definition of value chain for reporting purposes encompasses partners individually comprising 2% or more of the listed entity's purchases or sales by value.
The overall disclosure may be limited to partners covering 75% of the entity's purchases and sales by value, but even this scope involves extensive data gathering efforts across diverse supply chains.

The shift to voluntary status gives companies additional time to build the systems, contractual mechanisms, and collaborative frameworks necessary for robust value chain data collection. Companies that proactively engage with value chain reporting, even on a voluntary basis, may gain a competitive advantage by demonstrating comprehensive ESG management to investors and stakeholders.

This development also has implications for companies with significant regulatory compliance obligations across multiple domains. Entities already managing complex reporting and filing requirements, such as charge registration filings under Section 77 or director appointment and DIN processes, will need to integrate sustainability reporting into their broader compliance calendars to avoid last-minute bottlenecks.

Assessment versus Assurance: The Terminology Shift

A notable refinement in the BRSR framework has been SEBI's introduction of the term "assessment" alongside "assurance" through the LODR Amendment Regulations 2025. Under this amendment, the phrase "Data & Assurance Approach" in the BRSR Core template has been replaced with "Data & Assessment or Assurance Approach."

This terminological change addresses a specific concern raised by stakeholders. The term "assurance" carries particular professional connotations, as it is traditionally associated with engagements conducted by chartered accountants and auditing professionals under established assurance standards such as ISAE 3000 or ISAE 3410. Several stakeholders had expressed concern that restricting BRSR Core verification to "assurance" could create unintended consequences, including limiting the pool of qualified providers and imposing additional financial burdens on reporting companies.

The introduction of "assessment" as an alternative allows companies to engage with third-party assessors operating under standards developed by the Industry Standards Forum (ISF) in consultation with SEBI. This approach provides companies with greater flexibility in selecting verification providers while maintaining the objective of independent third-party evaluation of sustainability disclosures. Companies should note that whether they choose assessment or assurance, the underlying requirement for independent verification of BRSR Core KPIs remains unchanged. The choice between the two pathways may depend on factors such as cost, availability of qualified providers, and the specific industry sector of the reporting entity.

This flexibility in compliance approach is consistent with SEBI's broader regulatory philosophy, which increasingly emphasises proportionate regulation. Companies facing penalties for non-compliance with other regulatory requirements, as illustrated by ROC expanded adjudication powers under Section 454, should recognise that BRSR reporting timelines carry similarly strict compliance expectations and that regulatory tolerance for inadequate disclosures is diminishing.

Alignment with Global Standards

The BRSR framework's alignment with international reporting standards is a deliberate design choice by SEBI, intended to position Indian listed companies within the global sustainability disclosure ecosystem. The framework draws from two primary international references:

Global Reporting Initiative (GRI) Standards: GRI's emphasis on stakeholder materiality, impact-based reporting, and comprehensive disclosure across environmental, social, and governance dimensions is reflected in the BRSR's approach to essential and leadership indicators.
Task Force on Climate-related Financial Disclosures (TCFD): TCFD recommendations influence the climate-specific elements of the BRSR framework, particularly in areas such as governance of climate risks, strategy for climate transition, risk management processes, and metrics and targets related to greenhouse gas emissions.

This dual alignment serves multiple purposes. It enables comparability with global peers, reduces the reporting burden for Indian companies that already report under GRI or TCFD frameworks, and positions Indian capital markets as a destination for ESG-conscious global capital. The alignment also supports India's commitments under the Paris Agreement and its nationally determined contributions on climate action.

For companies navigating multiple regulatory frameworks, including those dealing with data protection requirements under the DPDP Act 2023, the integration of ESG reporting with existing compliance systems offers opportunities for synergy. Both sustainability reporting and data protection compliance require systematic data governance, internal controls, and regular monitoring, and companies that develop unified compliance management approaches can achieve efficiencies across both domains.

Practical Compliance Considerations for Companies

Companies approaching the FY 2026-27 BRSR Core assurance deadline should consider several practical steps to ensure timely and effective compliance:

Conduct a thorough gap analysis of current sustainability data collection processes against the approximately 30 BRSR Core KPIs. This analysis should identify areas where data is unavailable, unreliable, or not subject to adequate internal controls.
Evaluate whether to pursue the assessment or assurance pathway for BRSR Core verification. This decision involves considering the availability and cost of qualified providers, the level of rigour desired, and the expectations of the company's investor base.
Begin establishing frameworks for value chain data collection even though value chain ESG disclosure is currently voluntary. Early movers in this area will be better positioned when SEBI eventually reintroduces mandatory value chain reporting requirements, and proactive value chain engagement signals maturity to institutional investors.
Strengthen board-level governance structures for ESG oversight. This includes establishing or strengthening board committees with ESG responsibilities, ensuring adequate expertise at the board level, and integrating sustainability considerations into risk management frameworks.
Ensure accurate capture of social indicators related to employee well-being, diversity, and working conditions. Companies with employee stock option plans under the Companies Act 2013 and other employee benefit schemes should ensure that these indicators form a significant and accurately reported portion of their BRSR Core disclosures.

Entities that maintain robust investor complaint resolution mechanisms are also likely to benefit from the stakeholder engagement processes that underpin effective ESG reporting, as both disciplines require systematic approaches to stakeholder communication and feedback management. The growing scrutiny from institutional investors on ESG disclosures means that companies with weak sustainability reporting practices may face increased investor activism and lower valuations.

Companies should also be aware of the broader enforcement landscape. SEBI has demonstrated an increasingly proactive approach to ESG compliance, and entities that fail to meet reporting deadlines or provide inadequate disclosures may face regulatory scrutiny and potential enforcement action. The strengthening of whistleblower protection mechanisms under Indian law further reinforces the importance of accurate and complete sustainability reporting, as employees and stakeholders now have established channels for reporting deficiencies in corporate disclosures.

In addition to the changes concerning assurance and value chain reporting, SEBI's March 2025 circular introduced voluntary disclosure requirements related to green credits. These disclosures are part of a broader effort to simplify and streamline ESG reporting while encouraging companies to engage with emerging sustainability instruments. Companies that have obtained green credits under the Ministry of Environment, Forest and Climate Change's Green Credit Programme may now voluntarily disclose this information as part of their BRSR filings, providing investors with additional data points for evaluating environmental commitment. While this requirement remains voluntary, companies with strong environmental practices may wish to leverage green credit disclosures as a differentiator in their sustainability communications.

For companies involved in complex corporate transactions, including those requiring CCI merger control notifications under the Competition Act 2002, the ESG profile of target and acquiring entities is increasingly becoming a factor in due diligence processes. Comprehensive BRSR disclosures can therefore serve as a valuable resource during M&A transactions, providing acquirers with structured ESG data that would otherwise require independent investigation.

Conclusion

SEBI's mandate requiring BRSR Core reasonable assurance for the top 1,000 listed companies from FY 2026-27 represents a significant maturation of India's sustainability disclosure framework. The simultaneous recalibration of value chain reporting from "comply-or-explain" to voluntary status demonstrates SEBI's willingness to balance ambition with practicality, giving companies time to develop the capabilities needed for comprehensive value chain ESG data collection. The introduction of "assessment" as an alternative to "assurance" further broadens the compliance pathway, reducing potential bottlenecks in the availability of qualified verification providers.

For affected companies, the key takeaway is clear: preparation must begin now. Those that invest in robust data collection systems, engage qualified verification providers early, and integrate sustainability reporting into their broader governance frameworks will be well positioned to meet the FY 2026-27 deadline. The convergence of India's ESG disclosure regime with global standards such as GRI and TCFD signals that sustainability reporting is not merely a compliance exercise but a strategic imperative. Companies that embrace comprehensive and credible sustainability reporting will not only fulfil regulatory requirements but also strengthen their access to capital, enhance stakeholder trust, and contribute meaningfully to India's sustainable development objectives.