IFRS Foundation: ISSB (International Sustainability Standards Board)

Global baseline for sustainability-related financial disclosure.
Standards: IFRS S1 (General Requirements), IFRS S2 (Climate), endorsed by G7, G20, IOSCO, and adopted in 140+ jurisdictions.
Jurisdictions
140+
Countries referencing or adopting ISSB standards
Mandatory/Planned
15 / 21
15 mandatory, 21 planning adoption (2025)
Key Endorsements
G7, G20, IOSCO
Global regulatory support
First Effective
2024
Reporting for periods from Jan 1, 2024
IFRS S1 and S2: Key Features
StandardScopeFocusKey RequirementsRelation
IFRS S1All sustainability-related risks & opportunitiesFinancial materiality, investor needs Disclose material sustainability risks/opportunities;
Integrate with financial statements;
Industry-specific (SASB) guidance
Baseline, applies with S2
IFRS S2Climate-related disclosuresClimate risk, opportunities, metrics Governance, strategy, risk management, metrics & targets;
TCFD-aligned;
Physical & transition risks
Builds on S1, TCFD
Global ISSB Adoption Progress (2025)
Number of jurisdictions adopting or planning to adopt ISSB standards as of Q1 2025.
ISSB vs. Other Frameworks
FrameworkMaterialityScopeMandatory?Global Reach
IFRS ISSB (S1/S2)FinancialAll sectors, globalYes/Planned140+ jurisdictions
EU CSRDDoubleEU, large companiesYesEU
TCFDFinancialClimateVoluntary/Some mandatoryGlobal
SASBFinancialIndustry-specificNoGlobal
IFRS Foundation & ISSB Governance
  • Monitoring Board: Ensures public accountability
  • Trustees: Oversee strategy, funding, appointments
  • ISSB Board: Sets and updates standards
  • Sustainability Consultative Committee: Engages stakeholders, reviews evolving risks
  • Consolidates: SASB, IIRC, CDSB legacy frameworks

About the ISSB and IFRS S1/S2

The International Sustainability Standards Board (ISSB), established by the IFRS Foundation, sets a global baseline for sustainability disclosures focused on financial materiality and investor needs. IFRS S1 requires companies to disclose all material sustainability-related risks and opportunities alongside financial statements, while IFRS S2 mandates climate-related disclosures aligned with TCFD recommendations. Endorsed by G7, G20, IOSCO, and adopted or planned in over 140 jurisdictions, ISSB standards are reshaping capital market transparency and accountability worldwide.

Note: All data reflects official IFRS, IOSCO, and S&P Global updates as of May 2025.

IFRS Foundation - ISSB (International Sustainability Standards Board)