What is BRSR Reporting? A Complete Guide for Indian Listed Companies — SEBI Mandate 2026

If your company is among India’s top 1,000 listed entities, you already know about BRSR. But for many finance directors, sustainability heads, and company secretaries, BRSR still feels like uncharted territory — a regulatory obligation that sits somewhere between an annual report appendix and a full ESG audit.

This guide cuts through the complexity. It explains what BRSR is, which companies must comply, what you actually need to disclose, how SEBI’s phased assurance timeline works in 2026, and what the consequences of non-compliance look like. It also explains where third-party assurance providers like ISOQAR India fit into the picture.

If you are reading this because someone in your organisation asked ‘what is BRSR reporting?’ — you are in the right place.

ISOQAR India provides BRSR assurance services

ISOQAR India is a UKAS-accredited sustainability assurance provider. We conduct independent BRSR Core assurance for Indian listed companies, helping you meet SEBI’s mandatory third-party verification requirements.

Request a free consultation at isoqarindia.com/contact/

What is BRSR? — The Plain Language Explanation

BRSR stands for Business Responsibility and Sustainability Reporting. It is a structured ESG (Environmental, Social, and Governance) disclosure framework mandated by the Securities and Exchange Board of India (SEBI) for listed companies.

Think of it as a compulsory annual sustainability report — but with standardised formats, quantifiable metrics, and (for larger companies) mandatory independent third-party assurance. SEBI introduced BRSR to replace the earlier Business Responsibility Report (BRR), which was criticised for being qualitative, inconsistent, and impossible to compare across companies.

In short: BRSR is India’s answer to the question: ‘How do investors know whether a listed company’s ESG claims are real?’

What Does BRSR Stand For?

• B = Business Responsibility
• R = Responsibility
• S = Sustainability
• R = Reporting

Together, BRSR requires Indian listed companies to formally disclose how their business operations impact the environment, society, and governance standards — with verifiable, quantitative data, not just narrative commitments.

BRSR History — How It Replaced BRR

India’s sustainability reporting journey began in 2009 when SEBI introduced voluntary Business Responsibility Reporting (BRR) guidelines based on the National Voluntary Guidelines on Social, Environmental and Economic Responsibilities. In 2012, SEBI made BRR mandatory for the top 100 listed companies, later extending it to the top 500.

The problem with BRR was that it was largely qualitative. Companies could describe their sustainability efforts in vague language with no standardised metrics, making it impossible for investors to compare ESG performance across companies.

In May 2021, SEBI replaced BRR with the far more robust BRSR framework, which became mandatory from Financial Year 2022–23 for the top 1,000 listed companies by market capitalisation. BRSR requires quantifiable data — not narratives — across approximately 140 parameters.

Who Must File BRSR in India?

BRSR reporting is mandatory for the top 1,000 listed companies in India by market capitalisation as of March 31 each financial year. These companies must include the BRSR as part of their Annual Report and submit it in the prescribed PDF and XBRL formats to BSE and NSE.

Important: Market cap rankings change every year

Your company’s position in the top 1,000 is determined by market capitalisation as of March 31 each year. If your company enters the top 1,000, BRSR reporting becomes mandatory from that financial year. If you drop below 1,000, you may pause reporting — but voluntary adoption is encouraged and increasingly valued by institutional investors.

Can Non-Listed or Smaller Companies File BRSR Voluntarily?

Yes. Companies outside the top 1,000 can adopt BRSR reporting voluntarily. Benefits of voluntary BRSR adoption include improved investor perception, stronger ESG credentials for export markets, better preparation for when you enter the top 1,000, and alignment with global investor expectations.

What Does a BRSR Report Contain? — The Three Sections

SEBI’s BRSR framework organises disclosures across three sections and nine principles derived from India’s National Guidelines on Responsible Business Conduct (NGRBC).

Section A — General Disclosures

Basic company information: corporate identity, business activities, employee headcount, supply chain details, and information about entities the company holds financial or beneficial interest in. This section sets the context for the rest of the report.

Section B — Management and Process Disclosures

Disclosures about how the company governs sustainability: governance structures, policies for each of the 9 NGRBC principles, sustainability-related commitments, and how the company manages risks and opportunities related to ESG issues.

Section C — Principle-wise Performance Disclosures

The most detailed and data-intensive section. Organised around 9 principles of responsible business conduct, this section requires quantitative metrics on environmental performance, workforce wellbeing, human rights, stakeholder engagement, governance quality, and customer fairness.

Within Section C, there are two types of indicators:

• Essential indicators (mandatory) — approximately 98 quantitative data points that all companies must disclose
• Leadership indicators (voluntary) — approximately 42 advanced indicators reflecting global best practices such as value chain emissions and supplier ESG risk assessments.

What is BRSR Core? — The 9 Attributes Requiring Assurance

In May 2023, SEBI introduced BRSR Core — a defined subset of 49 Key Performance Indicators (KPIs) extracted from the full BRSR framework. BRSR Core is significant for one reason: it requires mandatory third-party assurance, not just self-reported data.

BRSR Core is structured around 9 ESG attributes. Companies must obtain independent reasonable assurance on the data they disclose for each of these 9 attributes:

Why BRSR Core assurance matters

Self-reported ESG data has historically been subject to greenwashing and inconsistency. BRSR Core assurance requires an independent third party — either the company’s statutory auditor or an SEBI-accredited assurance provider — to verify that the 9 ESG attributes above are accurate, supported by evidence, and calculated using consistent methodologies. This makes BRSR Core data comparable across companies and credible to global institutional investors.

SEBI’s BRSR Phased Assurance Timeline — Who Must Get Assured and When

SEBI has implemented BRSR Core assurance through a deliberate phased rollout, starting with India’s largest companies and expanding each year until all top 1,000 listed entities are covered by FY 2026–27.

In plain terms: if your company is currently ranked between 500 and 1,000 by market cap, BRSR Core assurance becomes mandatory for you in FY 2026–27. If you have not already started preparing, the window to engage an assurance provider is now.

Value Chain ESG Disclosures — The Next Major Expansion

From FY 2024–25, SEBI introduced one of the most consequential expansions of BRSR scope: value chain ESG disclosures. The top 250 listed companies began reporting ESG data not just for their own operations, but for their material upstream suppliers and downstream customers.

From FY 2026–27, this value chain reporting — with assurance — is scheduled to apply to all top 1,000 listed entities. This means:

• Your suppliers may soon be required to provide ESG data to you as part of your BRSR filing
• Your company may be asked by your corporate customers to provide ESG data to them for their BRSR reports
• ESG data management systems and supplier engagement programmes are no longer optional for large Indian companies

Who Can Provide BRSR Core Assurance?

SEBI specifies that BRSR Core assurance must be conducted by:

• The company’s statutory auditor (subject to their having the requisite competence)
• An independent professional firm that meets SEBI’s eligibility criteria for sustainability assurance providers

The assurance standard applied is typically ISAE 3000 (International Standard on Assurance Engagements) for non-financial information, or AA1000AS (AccountAbility Assurance Standard). The assurance engagement provides ‘reasonable assurance’ — meaning the assurance provider independently verifies the company’s BRSR Core data and issues a formal assurance report.

ISOQAR India is a UKAS-accredited sustainability assurance provider. Our team of qualified sustainability auditors conducts BRSR Core assurance engagements for Indian listed companies, helping boards and audit committees meet SEBI’s mandatory third-party verification requirements with confidence.

What Happens if You Don’t Comply with BRSR? — SEBI Penalties

Breaches of SEBI’s BRSR requirements are treated as violations of India’s Listing Obligations and Disclosure Requirements (LODR). Consequences include:

• Regulatory penalties and fines from SEBI under SEBI Act provisions
• Stock exchange notices from BSE and NSE for disclosure failures
• Reputational damage with institutional investors and ESG rating agencies
• Exclusion from ESG-linked indices and funds — which directly affects share price
• Increased scrutiny in future SEBI reviews

How to Prepare Your BRSR Filing — 6 Steps

1. Check your company’s market cap rank as of March 31. Confirm which financial year you enter the BRSR Core assurance mandate. Identify whether value chain disclosures apply to your company. — Identify your BRSR obligations
2. Gather data for all 9 BRSR Core attributes — GHG emissions, water, energy, waste, inclusive development, wages, gender diversity, customer fairness, and open-ness of business. Establish data collection systems across all facilities. — Collect your ESG data
3. Convert raw data into the KPIs required by BRSR Core. Use consistent methodologies that can withstand third-party scrutiny. Document your calculation methodology clearly for the assurance provider. — Calculate and verify metrics
4. If your company is within the assurance mandate scope, engage your statutory auditor or an independent assurance provider at least 6–9 months before your financial year-end. BRSR Core assurance is not a quick process. — Engage an assurance provider early
5. Use the SEBI-prescribed template. Complete all essential indicators and as many leadership indicators as possible. Have the report reviewed by your company secretary and sustainability team. — Draft your BRSR report in SEBI’s prescribed format
6. Submit in the prescribed PDF and XBRL formats. Include the independent assurance report from your assurance provider for BRSR Core KPIs. Ensure filing is completed within the annual report submission deadline (typically June–July for April–March fiscal years). — File via BSE/NSE portals

How ISOQAR India Supports BRSR Compliance

ISOQAR India is a UKAS-accredited certification and assurance body — part of the Alcumus Group with over 25,000 certified organisations globally. Our sustainability assurance team works with Indian listed companies to:

• Conduct independent BRSR Core assurance engagements to ISAE 3000 and AA1000AS standards
• Review and verify GHG emissions data (Scope 1, 2, and value chain Scope 3)
• Provide gap analysis against BRSR Core requirements before your filing deadline
• Issue assurance statements that meet SEBI’s requirements for independent third-party verification
• Help companies build internal ESG data management systems for future years

Unlike audit firms that treat BRSR as a side service, ISOQAR India’s sustainability assurance is a core offering — delivered by qualified sustainability auditors with deep expertise in ESG verification methodologies.

Ready to meet your BRSR Core assurance requirement?

ISOQAR India is a UKAS-accredited independent sustainability assurance provider. We help Indian listed companies meet SEBI’s mandatory BRSR Core assurance requirements — with credible, verified ESG data your board and investors can rely on. Contact our sustainability assurance team at isoqarindia.com/service/sustainability-assurance/ or request a free consultation at isoqarindia.com/contact/