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BRSR reporting is the sustainability disclosure that SEBI requires India’s largest listed companies to publish alongside their financial results. It obliges the top 1,000 listed entities by market capitalisation to report standardised environmental, social and governance (ESG) data in a format the regulator prescribes, and it has been mandatory since FY 2022-23 (SEBI, LODR Regulation 34(2)(f)). If your company sits inside that market-cap band, the report is part of your annual report obligations, not an optional corporate communication collateral.

This guide covers what the framework is, who has to file, the SEBI rules behind it, and how the assurance requirements tighten year on year.

What does BRSR stand for?

BRSR is short for the Business Responsibility and Sustainability Report. The full form carries the intent as it ties a company’s responsibility to society to its long-term sustainability performance, and it places both on the same footing as financial reporting.

Every report follows three sections. Section A carries general disclosures such as ownership, products and operations. Section B covers management and process disclosures, including policies and governance oversight. Section C reports principle-wise performance against nine principles.

Those nine principles come from the National Guidelines on Responsible Business Conduct (NGRBC), issued by the Ministry of Corporate Affairs in 2019 and mapped to the UN Sustainable Development Goals. They span ethics and transparency, product responsibility, employee wellbeing, human rights, the environment, responsible advocacy, inclusive growth and consumer value.

Who has to file BRSR?

The obligation applies to the top 1,000 listed entities by market capitalisation. Ranking is fixed as on 31 March of each financial year, so the list refreshes annually.

This creates real movement at the boundary. A company that climbs into the top 1,000 must begin reporting for that year. One that slips below the threshold can pause, though many keep reporting voluntarily to protect their data trail. SEBI confirmed through informal guidance that an entity outside the top 1,000 in a given year carries no filing duty for it.

Unlisted and private companies are not directly covered. They still feel the reach of the rules, because listed clients increasingly ask them for ESG data as value chain partners. The report itself is filed as part of the annual report and submitted to the stock exchanges in machine-readable XBRL format.

What SEBI rules made BRSR mandatory?

The legal anchor is Regulation 34(2)(f) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. SEBI introduced the new format through a circular dated 10 May 2021, backed by Gazette notification SEBI/LAD-NRO/GN/2021/22, replacing the older Business Responsibility Report (BRR) that the top 1,000 had filed until FY 2021-22.

The rollout was deliberately staged. Reporting stayed voluntary for FY 2021-22 and became mandatory from FY 2022-23, giving companies a year to build systems. That runway proved useful. The data demands run well beyond anything the old BRR ever asked for, covering quantified energy, emissions, water, waste, workforce and community metrics.

What is BRSR Core, and who needs assurance?

BRSR Core is a smaller, assurance-ready subset of the full report. SEBI created it through a circular dated 12 July 2023 (SEBI/HO/CFD/CFD-SEC-2/P/CIR/2023/122), narrowing the focus to a defined set of KPIs under nine ESG attributes. These include GHG footprint, water management, energy management, waste management and circularity, employee wellbeing and safety, gender diversity, inclusive development, customer and supplier engagement, and business openness.

Verification of these attributes phases in by market-cap rank, on a glide path SEBI set out in the same circular:

We are now inside FY 2026-27, which began on 1 April 2026, so the full top 1,000 fall within the verification net for the current year. The bar is high. Reasonable assurance, where a company takes that route, is the more rigorous of the two internationally recognised levels, and it sits above the limited assurance that regimes such as the EU’s CSRD started with.

What changed under SEBI’s December 2024 easing?

SEBI softened several edges after industry feedback. Following its board meeting on 18 December 2024, it issued a circular dated 28 March 2025 (SEBI/HO/CFD/CFD-PoD-1/P/CIR/2025/42) that reshaped three areas (SEBI).

First, the requirement to obtain “assurance” became “assessment or assurance.” Companies can now opt for a third-party assessment against Industry Standards Forum benchmarks instead of formal assurance, though reasonable assurance stays available and, in practice, common.

Second, value chain ESG disclosures were eased. Partners are now those contributing at least 2% of purchases or sales by value, disclosure can be limited to 75% of that spend, and the reporting was made voluntary rather than comply-or-explain.

Third, a voluntary green credits indicator was added under Principle 6, applicable from FY 2024-25.

Read quickly, this looks like a reprieve. It is not one. The verification perimeter still widens each year, and the data groundwork behind it takes months to build.

How does BRSR compare with GRI and global standards?

For teams already reporting under global frameworks, the Indian regime overlaps but does not duplicate. It draws on the same conceptual roots as GRI and SASB, yet its structure, KPI definitions and India-specific metrics, such as jobs created in smaller towns and gross wages paid to women, are unique to SEBI.

The direction of travel points toward convergence. With the ISSB’s IFRS S1 and S2 standards gaining ground worldwide, companies that treat these disclosures as a data discipline rather than a compliance chore will find the move to global assurance far smoother. This is where specialist BRSR and sustainability reporting support earns its keep, by building the evidence base once and reusing it across frameworks.

Frequently asked questions

Is BRSR reporting mandatory for all listed companies?

No. It is mandatory only for the top 1,000 listed entities by market capitalisation, measured as on 31 March each year, and has been since FY 2022-23. Companies outside that band may report voluntarily. Unlisted and private firms are not directly covered, though listed clients often request ESG data from them as value chain partners.

What is the difference between BRSR and BRSR Core? 

The full report is the complete disclosure across nine principles and three sections. BRSR Core is a smaller subset of key ESG attributes that require independent assessment or assurance. Introduced by SEBI’s 12 July 2023 circular, Core carries the verification obligation, while the wider report allows broader narrative and context around the numbers.

When does BRSR Core assurance apply to my company? 

It depends on your market-cap rank. Assessment or assurance applied to the top 150 from FY 2023-24, the top 250 from FY 2024-25, the top 500 from FY 2025-26, and the top 1,000 from FY 2026-27. Your position is fixed as on 31 March, so track your ranking before a boundary year arrives.

Did SEBI make BRSR easier in 2025? 

Partly. The 28 March 2025 circular let companies opt for assessment instead of assurance, raised the value chain threshold to partners contributing 2% of purchases or sales, and made value chain disclosure voluntary. The core reporting duty and the widening assurance glide path stay in force, so the overall trajectory is still upward.

If you are approaching a glide-path boundary or filing for the first time, the practical next step is to audit your ESG data against the nine BRSR Core attributes now, well before the financial year you will report on.