Chapter 18: SDG & ESG Assurance (BRSR Core & SSAE 3000)
1. Global Sustainability Frameworks & UN 17 SDGs
Sustainability reporting communicates an entity's non-financial impacts across Environmental, Social, and Governance (ESG) pillars.
| Framework / Standard | Issuing Body | Core Focus Area |
|---|---|---|
| UN 17 SDGs | United Nations (2030 Agenda) | 17 Global Sustainable Development Goals (No Poverty, Zero Hunger, Good Health, Quality Education, Clean Water, Climate Action, etc.). |
| GRI (Global Reporting Initiative) | Global Sustainability Standards Board | Impact materiality; multi-stakeholder reporting on economy, environment, and people. |
| ISSB (IFRS S1 & S2) | International Sustainability Standards Board | IFRS S1: General sustainability-related financial disclosures. IFRS S2: Climate-related disclosures (Scope 1, 2, 3 emissions, physical/transition risks). |
2. SEBI BRSR & BRSR Core Phased Assurance Mandate
The Business Responsibility and Sustainability Report (BRSR) is rooted in the 9 Principles of the National Guidelines on Responsible Business Conduct (NGRBC). BRSR Core is a sub-set of 9 Key Performance Indicators (KPIs) designed for quantifiable and verifiable assurance.
| Financial Year | Mandatory BRSR Reporting Scope | Mandatory Reasonable Assurance on BRSR Core |
|---|---|---|
| FY 2022–2023 | Top 1,000 listed entities by market cap | Voluntary |
| FY 2023–2024 | Top 1,000 listed entities | Top 150 listed entities |
| FY 2024–2025 | Top 1,000 listed entities | Top 250 listed entities |
| FY 2025–2026 | Top 1,000 listed entities | Top 500 listed entities |
| FY 2026–2027 | Top 1,000 listed entities | Top 1,000 listed entities |
• Applicability: Top 250 listed entities must report ESG footprints of their value chain (upstream & downstream partners comprising ≥75% of sales/purchases).
• Timeline: Phased starting FY 2024–25 on "Comply or Explain" basis, with assurance mandatory from FY 2025–26.
3. Assurance Standards: SSAE 3000 & ISAE 3410
Assurance on non-financial ESG metrics is conducted under SSAE 3000 (Standard on Sustainability Assurance Engagements 3000 issued by ICAI).
| Assurance Parameter | Limited Assurance | Reasonable Assurance |
|---|---|---|
| Level of Comfort | Moderate / meaningful level of assurance. | High, but not absolute assurance. |
| Procedures Performed | Primarily inquiries, analytical review, and high-level walkthroughs. | Testing internal controls over ESG data, recalculations, physical site inspections, sample vouching. |
| Conclusion Format | Negative formulation: "Nothing has come to our attention..." | Positive formulation: "In our opinion, the metrics are presented fairly..." |
4. Greenwashing, Double Materiality & Assurance Traps
Greenwashing: The practice of conveying a false impression or misleading information about how a company's products or operations are environmentally sound.
Auditor must test:
• Whether carbon-neutrality claims rely on unverified offsets.
• Whether energy-reduction percentages cherry-pick small non-core operations while ignoring heavy manufacturing plants.
• Verification of Greenhouse Gas (GHG) Emissions: Scope 1 (Direct), Scope 2 (Purchased electricity), and Scope 3 (Value chain / supply chain).
• Financial Materiality (Outside-In): How sustainability issues affect the company's financial condition, cash flows, and value.
• Impact Materiality (Inside-Out): How the company's operations impact people, society, and the environment.