INDIA'S NEW ESG ASSURANCE STANDARD

September 29, 2026

1. What Is ESG and Why Does It Matter?

Think of ESG as a company's report card beyond just profits. A financial report tells investors how much money the company made. An ESG report tells them how responsibly it made that money — and whether it will still be around in the long run.

Environmental (E) Social (S) Governance (G)
Carbon & greenhouse gas emissions Employee health & safety Board composition
Energy & water usage Gender diversity & fair pay Anti-corruption policies
Waste management Supply chain ethics Audit & transparency
Climate risk Community & human rights Shareholder rights

ESG reporting is now mandatory for India's top 1,000 listed companies under SEBI's BRSR framework.

The Problem: Greenwashing

Greenwashing is when a company makes bold sustainability claims — such as 'carbon neutral by 2030' or 'zero waste by 2025' — without verified data to back them up. Investors and regulators have grown increasingly concerned about this globally. The solution is independent verification — also called assurance — of ESG data, just like a financial audit.

2. India's ESG Journey: From BRR to BRSR to SSA 5000

Year What Changed
2012 SEBI introduced the Business Responsibility Report (BRR) for top 100 companies. Mostly narrative questions — no standard metrics.
2021 BRR replaced by BRSR (Business Responsibility & Sustainability Report). Over 140 measurable ESG data points. Voluntary in FY 2021-22.
2022–23 BRSR mandatory for India's top 1,000 listed companies. Must be filed digitally (XBRL format).
2023 SEBI introduced BRSR Core — 9 focused ESG attributes (GHG, water, waste, energy, gender diversity, wages, inclusive development, customer fairness, business openness) requiring third-party verification on a phased timeline.
Nov 2024 IAASB (global standard-setter) issued the final ISSA 5000 — the world's first dedicated sustainability assurance standard.
★ May 2026 ICAI issued the Exposure Draft of SSA 5000 — India's first dedicated ESG assurance standard, based on ISSA 5000.

BRSR Core Assurance — Who Must Comply and When?

Independent verification of BRSR Core data is being phased in. Since SEBI's March 2025 circular, companies can meet this through either third-party “assurance” (only a practitioner can perform this) or a third-party “assessment” against Industry Standards Forum criteria — not assurance alone:

  • FY 2023-24: Top 150 listed companies
  • FY 2024-25: Top 250 listed companies
  • FY 2025-26: Top 500 listed companies
  • FY 2026-27 (current year): Top 1,000 listed companies

Source: SEBI Circular SEBI/HO/CFD/CFD-SEC-2/P/CIR/2023/122, 12 July 2023, as amended by SEBI's March 2025 circular on BRSR Core assessment/assurance

3. What Is SSA 5000?

SSA 5000 is India's first dedicated standard telling Chartered Accountants (and other qualified professionals) exactly how to independently verify and sign off on a company's ESG disclosures.

Think of it this way:

A company's financial accounts are audited every year so investors know the numbers are real. SSA 5000 does the same for ESG data — it sets the rules for how an ESG audit must be conducted.

5 Things That Make SSA 5000 Stand Out

  • One complete rulebook — Practitioners follow SSA 5000 alone; no need to juggle multiple standards.
  • Works with any ESG framework — GRI, ISSB, BRSR, or others. No framework is excluded.
  • Covers both levels of assurance — limited (review-level) and reasonable (audit-level) in one standard.
  • Tackles greenwashing head-on — Specific rules for verifying forward-looking claims like net-zero targets.
  • Open to accountants and non-accountants — Any qualified professional can use the standard.

4. How an ESG Assurance Engagement Works — Step by Step

Under SSA 5000, the assurance professional follows four clear stages when reviewing your company's ESG data:

Stage What Happens (in plain terms)
Stage A — Acceptance The professional decides whether they are qualified and equipped to take on the engagement. They check that your company has proper systems in place to identify and report ESG information.
Stage B — Risk Assessment They study your business, your ESG processes, and your internal controls. They look for any areas where the data could be wrong — including potential fraud or rule-breaking.
Stage C — Testing They test whether your internal controls are actually working, and verify the data itself — including your future targets and commitments (like net-zero pledges).
Stage D — Reporting They issue a formal assurance report with their conclusion. The engagement file must be finalised within 60 days of the report and kept on record for at least 5 years.

5. How to Choose the Right ESG Assurance Consultant

With BRSR Core assurance now mandatory for the top 1,000 listed companies, and SSA 5000 setting the rulebook, choosing the right practitioner matters as much as complying with the standard itself.

Checklist: What to Look For in an ESG Assurance Provider
  • Qualification and independence — the practitioner should be eligible to perform assurance under SSA 5000 and have no conflict of interest with your company's management or board.
  • Sector expertise — someone who understands the ESG risks material to your industry (e.g., emissions and effluents for manufacturing, data privacy and labour practices for IT/services).
  • Clarity on the level of assurance — confirm upfront whether you need limited (review-level) or reasonable (audit-level) assurance, and that the provider can deliver it.
  • Multidisciplinary team
  • Robust methodology and documentation
  • Technology for data verification — the ability to trace ESG metrics back to source systems, such as energy meters, HR records or supply chain data.

6. Key Advantages of Adopting SSA 5000

SSA 5000 is not just a compliance checkbox. Done well, it changes how reliable your ESG reporting is — and how it is perceived by the outside world.

  • One consistent rulebook — a single standard for ESG assurance means less confusion for both companies and practitioners, replacing the current patchwork of frameworks.
  • Stronger credibility with investors, lenders and regulators — independently assured ESG data carries far more weight than self-reported claims.
  • Early warning on data gaps — the assurance process itself often surfaces weaknesses in how ESG data is collected and controlled, before they become compliance or reputational problems.
  • Protection against greenwashing risk — documented, tested evidence behind claims like 'net-zero by 2030' reduces the risk of regulatory action or investor litigation.

7. How Corporates Can Benefit by Adopting These Standards

Beyond meeting SEBI's phased BRSR Core requirement, adopting SSA 5000 early can create real business value:

  • Access to green and sustainability-linked financing
  • A competitive edge with responsible investors — as assurance becomes the norm, companies that adopt it ahead of their mandatory year stand out to ESG-focused funds.
  • Smoother global market access — because SSA 5000 is based on the IAASB's ISSA 5000, assurance performed under it aligns more easily with international requirements such as the EU's Corporate Sustainability Reporting Directive (CSRD), which matters for exporters and multinationals.( Reputational and talent benefits)
  • Lower long-term compliance cost — a single standard that works across GRI, ISSB and BRSR avoids paying for multiple, overlapping assurance exercises.

Author:
Vijayshree v

Prepared On:
29/09/2026



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