ESG Compliance: What Indian Companies Need to Know

ESG compliance in India means meeting SEBI’s Business Responsibility and Sustainability Reporting (BRSR) requirements, which apply to the top 1,000 listed companies by market capitalisation. From FY 2026-27, independent third-party assurance of BRSR Core disclosures becomes mandatory for all 1,000 companies, up from 500 the previous year, making ESG compliance a board-level priority rather than an optional sustainability exercise.

What Is BRSR and Who Must File It?

The Business Responsibility and Sustainability Report is SEBI’s standardised ESG disclosure format, introduced to replace the older Business Responsibility Report. It applies to the top 1,000 listed companies by market capitalisation, who must file BRSR as part of their annual report. The report covers nine principles spanning ethical conduct, employee wellbeing, stakeholder engagement, human rights, environmental responsibility, policy advocacy, inclusive growth, consumer interests, and value chain responsibility. Smaller listed companies outside the top 1,000 can file voluntarily, and many do so to attract ESG-focused institutional investors.

BRSR Core and the 49 Key Performance Indicators

In 2023, SEBI introduced BRSR Core, a focused subset of 49 key performance indicators covering nine attributes: greenhouse gas emissions (absolute and intensity-based), water consumption, waste management, energy use, gender diversity, wage parity, inclusive development, customer fairness, and openness of business. Unlike the full BRSR, which allows some flexibility in disclosure depth, BRSR Core KPIs must be reported in a standardised, comparable format, and increasingly require independent assurance.

The Assurance Timeline: 2023 to 2027

SEBI has phased in mandatory external assurance of BRSR Core in stages. The top 150 listed companies by market capitalisation were required to obtain assurance starting FY 2023-24, expanding to the top 250 in FY 2024-25, the top 500 in FY 2025-26, and the top 1,000 in FY 2026-27. As a result, by the 2026-27 reporting cycle, virtually every major listed company in India will need independently verified ESG data, not just self-reported disclosures. Additionally, a March 2025 SEBI circular relaxed value chain ESG disclosure from mandatory “comply-or-explain” to fully voluntary, giving companies more time to build data collection systems across suppliers and distributors.

How Companies Can Prepare for ESG Compliance

Companies preparing for BRSR compliance should start by mapping their current data collection capabilities against the 49 BRSR Core KPIs, identifying gaps in emissions tracking, water and waste metrics, and workforce diversity data. Engaging an accredited third-party assurance provider early, rather than close to the filing deadline, helps avoid last-minute discrepancies. Many companies now use dedicated ESG reporting software to automate data collection across business units, since manual spreadsheet-based tracking becomes unreliable at scale. Furthermore, companies should review their board composition and governance policies, since governance metrics carry as much weight in BRSR as environmental and social indicators.

Consequences of Non-Compliance

Failure to file BRSR or provide the required assurance can result in regulatory action from SEBI, including penalties and disclosure deficiencies flagged in stock exchange filings. Beyond direct penalties, non-compliant companies risk exclusion from ESG-focused mutual funds and institutional portfolios, which increasingly screen holdings using BRSR data. This can affect a company’s cost of capital and investor base, since ESG-labelled funds and index products managing significant assets under management now factor BRSR scores into their selection criteria.

Common ESG Compliance Mistakes to Avoid

Companies preparing BRSR filings often make avoidable mistakes. A common error is treating BRSR as a one-time annual exercise rather than building continuous data collection systems, which leads to rushed, error-prone filings close to the deadline. Another frequent issue is inconsistent boundary definitions — companies sometimes report emissions or workforce data for different subsidiaries in different years, making year-over-year comparison unreliable for assurance providers. Some companies also underestimate the lead time needed to engage an accredited assurance provider, especially as demand for assurance services grows heading into the FY 2026-27 deadline for the top 1,000 companies. Finally, treating governance disclosures as a formality rather than reflecting genuine board oversight can trigger scrutiny, since governance quality is weighted heavily across most ESG rating methodologies.

Frequently Asked Questions

Which companies must file BRSR in India?

The top 1,000 listed companies by market capitalisation on Indian stock exchanges must file BRSR as part of their annual report.

What is BRSR Core?

BRSR Core is a focused subset of 49 key performance indicators within the full BRSR framework, covering measurable metrics like emissions, water use, waste, and workforce diversity that require independent assurance.

When does BRSR assurance become mandatory for all top 1,000 companies?

Independent assurance of BRSR Core becomes mandatory for the top 1,000 listed companies starting FY 2026-27, following a phased rollout that began with the top 150 companies in FY 2023-24.

Is value chain ESG disclosure mandatory in India?

No. A March 2025 SEBI circular changed value chain ESG disclosure from mandatory “comply-or-explain” to fully voluntary, giving companies more flexibility while they build data collection systems.

How is ESG compliance different from ESG investing?

ESG compliance refers to a company’s regulatory obligation to disclose and assure its sustainability data under frameworks like BRSR, while ESG investing is the practice investors use to select companies based on that data.

ESG compliance is becoming a core governance requirement for India’s largest listed companies rather than a voluntary disclosure exercise. To understand how this data is used, read our guides on what ESG means, how ESG ratings are calculated, and how BRSR reporting works in practice.

Sources and further reading: Securities and Exchange Board of India | Ministry of Corporate Affairs