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Zenora Hub · Ready Reckoner · Updated 2026

ESG Reporting
Frameworks —
Visual Comparison
Guide

GRI · BRSR · TCFD · SASB · CDP · ISSB · ESRS — scope, mandates, coverage, and which framework applies to your organisation type. A practical reference for Indian sustainability leaders.

7 Frameworks 5 Sections Decision Guide India Focus Regulatory Timeline Coverage Charts
GRI, BRSR, TCFD, SASB, CDP, ISSB, ESRS
2026
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Section 01 · Framework Profiles

Seven frameworks.
One clear picture.

Each ESG framework was built to solve a specific problem — and they overlap significantly. Understanding their mandates, coverage, and audience is the first step to building a disclosure strategy that satisfies multiple stakeholders with minimum duplication.

Universal · Voluntary
GRI
Global Reporting Initiative
The most widely used sustainability reporting framework globally. Comprehensive E, S & G coverage with 50+ topic-specific standards. Adopted by companies in 100+ countries.
EnvironmentalSocialGovernanceVoluntary
India · Mandatory
BRSR
Business Responsibility & Sustainability Reporting
SEBI-mandated for top 1,000 listed companies. India's national ESG framework built on 9 principles. BRSR Core — mandatory for top 150 with third-party assurance.
India MandatoryE + S + G9 Principles
Climate · Finance
TCFD
Task Force on Climate-related Financial Disclosures
Focused on climate risk and opportunity. Covers governance, strategy, risk management, and metrics. Now being integrated into ISSB S2 as the global standard.
Climate RiskFinancial→ ISSB S2
Sector-specific
SASB
Sustainability Accounting Standards Board
77 industry-specific standards identifying the most financially material ESG topics per sector. Now part of the IFRS Foundation family. Complements GRI and ISSB.
Sector StandardsFinancial Mat.
Questionnaire
CDP
Carbon Disclosure Project
Annual questionnaire-based disclosure covering climate, water, and forests. Scores companies A–D on disclosure and performance. Widely used by investor-driven ESG assessments.
Climate + WaterInvestor-drivenAnnual Score
Global Baseline · Emerging Mandatory
ISSB
International Sustainability Standards Board (IFRS S1 & S2)
The emerging global baseline — IFRS S1 (general sustainability disclosures) and S2 (climate). Adopted in 25+ jurisdictions. India alignment expected in the next regulatory cycle.
Global BaselineClimate (S2)India: coming
EU · Mandatory
ESRS
European Sustainability Reporting Standards (CSRD)
Mandatory under EU's CSRD for large EU companies and non-EU companies with EU revenue over €150M. Requires double materiality. Most comprehensive scope of any framework.
EU MandatoryDouble MaterialityE + S + G
Section 02 · Coverage Comparison

Framework coverage — side by side

How deeply does each framework cover Environmental, Social, Governance, and Climate topics? Use this to identify which combination delivers maximum coverage for your organisation.

Framework Environmental Social Governance Climate India Assurance Status
GRI
Global Reporting Initiative
✓ Optional Voluntary
BRSR
SEBI Mandated — India
★ India Required (Core) Top 1,000
TCFD
→ Integrated into ISSB S2
✓ Optional Voluntary
SASB
77 Industry-specific Standards
✓ Optional Voluntary
CDP
Climate, Water & Forests
✓ Not req. Investor-driven
ISSB
IFRS S1 + S2 · Global Baseline
↗ Required 25+ jurisdictions
ESRS
EU CSRD · Double Materiality
EU only Required EU Mandatory
Illustrative · Framework Coverage Depth
E, S, G & Climate coverage by framework
Radar shows relative depth of E, S, G, Climate coverage per framework.
Illustrative · Adoption Rate by Company Type
Which frameworks apply to your organisation?
% = estimated likelihood of framework applying to each company type.
Section 03 · Decision Guide

Which framework applies to you?

Answer these five questions to identify your mandatory and recommended frameworks. Most organisations need a combination — the good news is significant overlap means one well-structured report can satisfy multiple requirements.

1
Are you among the top 1,000 listed companies on Indian stock exchanges (NSE/BSE)?
Yes → BRSR is mandatory for you. If you are in the top 150, BRSR Core with third-party assurance is also required. Top 250 companies must disclose Scope 3 emissions on a comply-or-explain basis. Start here — build everything else on your BRSR foundation.
BRSR Mandatory
2
Do you have revenue from EU customers exceeding €150M, or are you a large EU subsidiary?
Yes → CSRD/ESRS is or will be mandatory. ESRS requires double materiality assessment, full E/S/G disclosure, and third-party assurance. Compliance is being phased from 2025–2028. Even if not directly in scope, your EU customers may ask you for ESRS-aligned data as their supply chain.
ESRS/CSRD Mandatory
3
Do institutional investors, ESG rating agencies, or global clients request your sustainability data?
Yes → GRI is the de-facto global standard for stakeholder-driven disclosure. CDP is strongly recommended if investors or large customers request it — CDP scores directly affect cost of capital. ISSB S1/S2-aligned disclosures are increasingly expected by global institutional investors.
GRI + CDP + ISSB
4
Does your board, lenders, or regulators require formal climate risk disclosures or scenario analysis?
Yes → TCFD/ISSB S2 provides the framework for climate-related governance, strategy, risk and metrics disclosures. TCFD has been integrated into ISSB S2 — building an ISSB-aligned report satisfies TCFD requirements. RBI and SEBI are likely to make TCFD-aligned disclosures mandatory for financial institutions.
TCFD / ISSB S2
5
Are you in a sector with specific ESG risk profiles — chemicals, mining, food, apparel, technology, finance?
Yes → SASB standards identify the most financially material ESG topics for your specific industry. Use SASB as a prioritisation lens within your GRI or ISSB report — they are designed to be used together. SASB is integrated into the ISSB framework.
SASB Industry-specific
The efficient combination for most Indian companies
One well-structured GRI-aligned sustainability report satisfies ~85% of BRSR, ~70% of TCFD, and forms the foundation for ISSB and ESRS. Start with GRI, build BRSR compliance on top, and extend to TCFD/ISSB for climate-specific disclosures. Do not build separate reports for each — build one architecture that speaks all languages.
Section 04 · Regulatory Timeline

Regulatory timeline — India & Global

ESG regulation is accelerating. The window between voluntary and mandatory is closing. This timeline covers key milestones affecting Indian companies — listed, unlisted, and those in global supply chains.

🇮🇳 India Timeline
2021
BRSR Introduced by SEBI
Voluntary for FY2021-22, mandatory for top 1,000 listed companies from FY2022-23. Replaced the older BRR (Business Responsibility Report).
2023
BRSR Core + Mandatory Assurance
Top 150 companies required to obtain limited assurance on BRSR Core indicators. Scope 3 disclosure (comply-or-explain) mandatory for top 250.
2024–25
Value Chain Disclosures
Top 250 companies required to disclose ESG data from value chain partners — creating compliance pressure across the Indian SME supplier base.
2026–27
BRSR Expansion Expected
SEBI expected to expand mandatory BRSR to top 5,000 listed companies. ISSB alignment under active consideration by MCA and SEBI.
2027+
ISSB India Adoption
India expected to align BRSR with ISSB S1/S2 standards. Potential mandatory climate risk disclosures for financial sector institutions.
🌍 Global Timeline
2023
ISSB S1 & S2 Published
IFRS Foundation publishes inaugural sustainability disclosure standards. 25+ jurisdictions signal adoption — Australia, UK, Singapore, Japan, Canada among early adopters.
2024
CSRD / ESRS Phase 1
First wave of large EU companies (500+ employees) report under ESRS — affecting Indian companies that supply to or partner with EU corporates.
2025
EU CBAM Full Implementation
Carbon Border Adjustment Mechanism requires carbon pricing on EU imports of steel, cement, aluminium, chemicals — directly affecting Indian exporters.
2026
CSRD Phase 2 + ISSB Mandatory
Extended CSRD scope covers mid-size EU companies. ISSB mandatory in multiple jurisdictions — raising expectations on Indian subsidiaries and supply chain partners.
2027–28
EU Green Claims Directive
EU rules on substantiating environmental claims — affecting Indian exporters making green product claims in European markets.
Section 05 · Quick Reference

Quick reference — start here

Use this one-page reference before any stakeholder meeting, board briefing, or disclosure planning session. Share with your sustainability and finance teams.

Based on your company type...
Listed in India — Top 1,000 BRSR mandatory. Start here. Build GRI alongside to satisfy investor audiences. Top 250: Scope 3 required.
Listed in India — Top 150 BRSR + BRSR Core with assurance. CDP recommended for investor engagement. Begin ISSB S1/S2 preparation.
Unlisted Indian Company Voluntary now — mandatory likely by 2027. Use BRSR as preparation framework. Start data collection and policy building now.
EU-facing Indian Exporter CSRD/ESRS will apply via supply chain. Align GRI now. Track CBAM requirements if exporting steel, cement, or chemicals.
Global Investor-facing ISSB S1/S2 + GRI. CDP highly recommended. Consider SBTi for science-based targets to satisfy institutional investor expectations.
The Efficient Stack for Indian Companies

Build GRI + BRSR as your foundation. Layer in TCFD/ISSB S2 for climate. Add CDP if investors request it. Extend to ESRS if EU supply chain demands it. One architecture — multiple outputs.

Talk to Zenora

We help organisations build integrated disclosure architectures that satisfy multiple frameworks simultaneously — reducing effort while maximising stakeholder coverage. Reach us at services@zenorahub.com

📊
Framework Overlap: One Report — Multiple Audiences
A well-structured GRI-aligned sustainability report satisfies ~85% of BRSR requirements, ~70% of TCFD, and provides the foundation for ISSB S1/S2. You do not need separate reports for each framework.
GRI → BRSR: ~85% overlap GRI → TCFD: ~70% overlap TCFD → ISSB S2: ~95% overlap SASB + ISSB S1: fully integrated