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ESG Reporting Frameworks: GRI vs SASB vs CSRD vs TCFD Comparison (2026)

Published December 2024 · Updated April 2026 · 11 min read · By Sustainability-Frisk

What is ESG Reporting? (Quick Answer)

ESG (Environmental, Social, Governance) reporting is the structured disclosure of a company's non-financial performance to stakeholders — investors, regulators, customers, and communities. Different jurisdictions and stakeholders require different frameworks; selecting the right combination determines both compliance and capital access.

Decision Matrix: Which Framework When?

FrameworkBest ForRequired ByCost / Effort
CSRDEU exporters, EU suppliersEU law (mandatory)€8K–€18K · High
GRIGlobal investors, comprehensiveVoluntary (market expectation)€5K–€12K · Medium
SASB / ISSBUS investors, sector-specificUS stock exchanges, IFRS S1/S2€3K–€8K · Low–Medium
TCFDClimate risk disclosureUK/EU/JP financial regulators€4K–€10K · Medium

Priority Order by Buyer Geography

For EU Exporters (Priority Order)

  1. CSRD First — non-negotiable for EU market access (see CSRD compliance guide)
  2. GRI Add-on — for comprehensive stakeholder reporting
  3. TCFD — required if you supply UK or EU listed firms
  4. SASB — only if you also supply US public companies

For US-Focused Manufacturers

  1. SASB / ISSB First — increasingly required by US-listed buyers
  2. TCFD — for climate risk transparency
  3. GRI — for stakeholder breadth

Framework Overlap: Don't Double-Pay

The frameworks overlap significantly — typical reuse rates we see:

  • GRI ↔ CSRD: ~65% data overlap
  • SASB ↔ CSRD: ~40% data overlap
  • TCFD ↔ CSRD (ESRS E1): ~85% data overlap

A well-designed data architecture means you collect once and report many times — saving 30–50% on multi-framework programs.

Frequently Asked Questions

Is CSRD replacing GRI?

No. CSRD is mandatory EU law; GRI remains a voluntary global standard. Many companies report against both — CSRD for compliance, GRI for global stakeholder communication.

What is ISSB and how does it relate to SASB?

The International Sustainability Standards Board (ISSB) took over SASB in 2022 and issued IFRS S1 & S2 standards in 2023. SASB sector standards are now the basis for ISSB's industry-specific guidance.

Can I use AI tools to generate ESG reports?

AI accelerates drafting and gap-filling, but every disclosure must be traceable to verified primary data. Auditors will reject unverifiable AI-generated text.

Is double materiality required outside CSRD?

Only CSRD/ESRS mandates it. GRI uses single (impact) materiality; SASB/ISSB uses single (financial) materiality. Doing the CSRD double materiality covers both.

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