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Aligned With AA1000 Licensed SEBI BRSR GHG Protocol GRI Standards ISSB / IFRS S1-S2 CDP SBTi UN SDGs
Trusted By
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ESG Tools Deployed
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Sector Playbooks
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Global Entities
12
Week Assurance Sprint
The Challenge

India's ESG Compliance Gap Is Widening

SEBI mandates are accelerating, but most companies beyond the top 100 lack the infrastructure, data systems, and expertise to comply.

Assurance-Grade Data Gap
Most companies beyond the Nifty 100 lack ESG data systems that can withstand third-party assurance. Internal controls, evidence trails, and data governance frameworks are either absent or manually managed — leaving boards exposed when assurance providers arrive.
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Value Chain Disclosure
Companies must disclose ESG data from partners covering 75% of value chain by purchase/sales value — pulling thousands of suppliers into compliance.
Capital Is Moving — With or Without You
Companies with strong ESG disclosures are already securing preferential lending terms. India ranks among the top five sources of green debt globally (Climate Bonds Initiative, 2024). Companies without credible ESG data are being priced out of the cheapest capital.
What We Do

Everything You Need to File, Assure, and Lead on ESG

Built for SEBI-mandated companies navigating BRSR, BRSR Core, value chain disclosure, and India's net-zero commitments.

01 Core

BRSR Readiness & Gap Assessment

Structured diagnostic benchmarking your ESG capabilities against all ~140 BRSR parameters. Maturity scorecard, data availability audit, and compliance roadmap.

Take free assessment →
02 Core

BRSR Report Preparation & Filing

End-to-end BRSR drafting — Sections A, B, C. GHG emissions calculation, XBRL filing, and BRSR Core KPI data preparation for assurance.

Explore report generator →
03 Flagship

BRSR Core Assurance Sprint

12-week structured programme to prepare your BRSR Core data for third-party scrutiny. Gap assessment, data architecture, mock audit, evidence binders.

View assurance programme →
04 Critical

Value Chain ESG Disclosure

Supplier ESG data collection, normalisation, and quality assurance. Scope 3 estimation, value chain risk analysis, and consolidated disclosure.

Explore supplier portal →
05 Core

Carbon Management & Climate Advisory

GHG inventory (Scope 1/2/3), climate risk assessment, SBTi alignment, net-zero transition plans, CBAM impact assessment.

Carbon & climate advisory →
06 Core

Green Finance Advisory

Green bond framework, sustainability-linked loans, RBI green deposits, carbon credit strategy. Unlocking cheaper capital through ESG performance.

Green finance advisory →
07 Core

ESG Assurance & Verification

Independent BRSR Core assessment, GHG verification, and anti-greenwashing review. AA1000 and ISAE 3000 methodology.

ESG assurance services →
08 Value-Added

ESG Training & Capacity Building

Board governance masterclass, BRSR technical training, GHG accounting certification, sector-specific workshops, supplier capacity building.

RSustain Academy →
Why RSustain

India Expertise. Global Standards.

Specialist depth, technology-enabled delivery, and accessible pricing for India's listed companies.

India-First, India-Deep

SEBI BRSR, NGRBC principles, Companies Act CSR, RBI green finance, India-specific social metrics, Carbon Credit Trading Scheme.

Value Chain Specialisation

Scalable methodology for supplier ESG data collection — the single biggest pain point as mandatory value chain disclosure rolls out.

Technology-Enabled

55+ ESG tools, automated workflows, and digital dashboards. We reduce manual data chasing and accelerate compliance timelines.

Purpose-Built for Listed Companies

India's listed companies need a partner who understands SEBI's regulatory architecture inside out — not a global playbook with Indian names swapped in.

8 Sector Playbooks

IT/BPO, BFSI, Pharma, Manufacturing, Steel & Cement, Textiles, Real Estate, Energy — each with sector-specific KPI frameworks and benchmarks.

Global Standards Bridge

Single partner for BRSR + GRI + ISSB + CSRD + CDP. Bridge domestic compliance with global investor expectations.

Regulatory Landscape

India's ESG Timeline — Act Now or Fall Behind

SEBI's phased expansion creates urgency. Every year, more companies face mandatory disclosure and assurance requirements.

2021

SEBI introduces BRSR, replacing BRR (Circular SEBI/HO/CFD/CMD-2/P/CIR/2021/562). ~140 ESG parameters. Mandatory from FY 2022-23 for top 1,000 listed companies.

FY 2023-24

BRSR Core launched (Circular SEBI/HO/CFD/CFD-SEC-2/P/CIR/2023/122) — 9 ESG attributes requiring assessment or assurance. Top 150 companies.

FY 2025-26

BRSR Core mandatory for top 500 companies. Value chain ESG disclosures deferred (SEBI March 2025 circular).

FY 2026-27 — Now

Third-party assessment or assurance mandatory for top 1,000. Value chain ESG disclosures remain voluntary; SEBI has not yet announced a mandatory date.

FY 2027-28 & Beyond

Full ecosystem maturity — all top 1,000 companies under assurance. ESG reporting becomes standard corporate governance.

Frequently Asked Questions

BRSR Compliance Questions Answered

BRSR (Business Responsibility and Sustainability Reporting) is SEBI's mandatory ESG disclosure framework for India's top 1,000 listed companies by market capitalisation. It replaced the older BRR format in 2021 and requires companies to report on approximately 140 environmental, social, and governance parameters across Sections A (company overview), B (management and process disclosures), and C (principle-wise performance).

All top 1,000 listed companies on BSE and NSE by market capitalisation must file BRSR as part of their annual report. This has been mandatory since FY 2022-23. Additionally, BRSR Core — a subset of 9 attributes with 49 KPIs — now requires third-party assessment or assurance for the top 1,000 companies from FY 2026-27.

BRSR is the full disclosure framework covering ~140 parameters. BRSR Core is a focused subset of 9 ESG attributes (49 KPIs) that require independent third-party assessment or assurance. Think of BRSR as the full report and BRSR Core as the audited highlights that investors and regulators scrutinise most closely.

Third-party assessment or assurance of BRSR Core is mandatory for the top 1,000 listed companies from FY 2026-27 (ending 31 March 2027). The phase-in began with the top 150 companies in FY 2023-24, expanded to the top 250 in FY 2024-25, and the top 500 in FY 2025-26.

SEBI can impose penalties for non-disclosure under LODR regulations, including fines, trading restrictions, and compounding penalties. Beyond regulatory penalties, non-compliance increasingly carries capital market consequences: ESG-focused investors screen out non-compliant companies, lenders may apply risk premiums, and global supply chain partners may delist non-disclosing suppliers.

From FY 2026-27, all top 1,000 listed companies require third-party assessment or assurance of their BRSR Core KPIs. Companies can choose between a “reasonable assurance” engagement (higher rigour, similar to a financial audit) or a “limited assurance” engagement. RSustain provides structured 12-week assurance preparation sprints to get your data audit-ready.

Costs vary significantly based on company size, sector complexity, and current ESG maturity. First-time filers typically invest in gap assessment, data collection systems, report preparation, and XBRL filing. RSustain offers structured engagement tiers from Foundation (first-time filers) through Leadership (ESG leaders pursuing global index inclusion). Request a proposal for a customised scope and fee estimate.

BRSR requires listed companies to disclose ESG data from upstream and downstream partners cumulatively comprising 75% of purchases and sales by value. This means thousands of suppliers and distributors must provide standardised ESG information. RSustain's Supplier ESG Portal provides a scalable platform for collecting, normalising, and verifying value chain ESG data.

Engagement Models

Three Engagement Models. One Clear Outcome.

Structured tiers from first-time BRSR filers to ESG leaders pursuing global recognition and green finance.

Foundation
First-time BRSR filers and companies ranked 500-1,000.
  • BRSR Readiness & Gap Assessment
  • BRSR report preparation (A, B, C)
  • Essential Indicators compilation
  • Scope 1 & 2 GHG calculation
  • CSR-ESG alignment review
  • XBRL filing support
  • Board briefing on obligations
  • 2 training sessions
Get Your BRSR Roadmap →
Leadership
ESG leaders pursuing global index inclusion and green finance.
  • Everything in Accelerate, plus:
  • Independent BRSR Core Assurance
  • Science-Based Targets (SBTi)
  • Net-zero transition plan
  • Green bond / SLL framework
  • ESG rating optimisation
  • CDP response preparation
  • GRI / ISSB dual reporting
  • CSRD readiness (EU-exposed)
  • CBAM impact assessment
Request Executive Briefing →

BRSR Regulatory Digest

Get BRSR deadline alerts and ESG regulatory updates. Join compliance professionals across India.

Your BRSR Deadline Is 31 March 2027. Let's Get Started.

Take our free BRSR readiness assessment or book a consultation with our advisory team.

Your BRSR deadline is 31 March 2027. Are you ready?

Only 156 days remain. Book a free 30-minute gap assessment with our BRSR advisory team.