IFRS.Report
IFRS S1 & S2 — Full Standards Reference
A citation-grounded map of IFRS S1 General Requirements and IFRS S2 Climate-related Disclosures for preparers, analysts, and assurance teams.
In the summer of 2021, a portfolio manager in London sat in front of two annual reports. One was from a German chemical company. The other was from a Japanese automaker. Both companies claimed to be "leaders in sustainability." Both had glossy ESG reports with charts, targets, and bold commitments. The portfolio manager could not compare them. The German company reported under one framework. The Japanese company reported under another. The metrics were different. The boundaries were different. The time horizons were different. She closed both reports and wrote "not comparable" in her spreadsheet.
That was the problem the ISSB was created to solve. Emmanuel Faber, the former CEO of Danone who became the board's first chair, put it plainly: "Investors have been asking us for a single language. Not a single standard for every company — a single language that lets them compare companies across borders, across industries, across the world." The answer was IFRS S1 and IFRS S2, published in June 2023. S1 sets the general rules for sustainability disclosure. S2 focuses on climate. Both use the same four-pillar structure: governance, strategy, risk management, metrics and targets.
The standards are not optional guidance. They are requirements. Under IFRS S1 §26–27, companies must identify the governance body responsible for sustainability oversight. Under §28–42, they must describe risks across the value chain and demonstrate resilience through scenario analysis. Under §43–44, they must explain how risk processes connect to enterprise risk management. Under §45–53, they must disclose quantitative metrics and defined targets. IFRS S2 adds climate-specific requirements: Scope 1, Scope 2, and Scope 3 greenhouse gas emissions (§27–36), transition plans (§13–15), and scenario analysis (§22). The portfolio manager in London now has a single language. The question is whether companies are ready to speak it.
The standards turn principles into process — governance bodies, scenario analysis, quantitative metrics — but the process only works if the evidence is anchored to specific IFRS paragraphs.
In Plain Language
IFRS S1 and S2 are not optional guidance — they are requirements. S1 sets the general framework: governance (§26–27), strategy (§28–42), risk management (§43–44), metrics and targets (§45–53). S2 adds climate-specific disclosure: Scope 1, 2, and 3 emissions (§27–36), transition planning (§13–15), and scenario analysis (§22). Together they create a single global language for sustainability disclosure.
- The standards turn principles into process — governance bodies, scenario analysis, quantitative metrics — but the process only works if the evidence is anchored to specific IFRS paragraphs.
- Every standards requirement maps to an explicit paragraph reference: IFRS S1 §26–27 for governance, IFRS S2 §27–36 for climate metrics, and SASB industry-specific topics for sector guidance.
- A reviewer should be able to trace any disclosure from the final report sentence through the evidence layer back to the IFRS paragraph that authorizes it.
Technical Requirements
- IFRS S1 four-pillar architecture — IFRS S1 §26–53: Every sustainability disclosure must be structured across governance, strategy, risk management, and metrics and targets — the same architecture used for financial reporting.
- IFRS S2 climate-specific requirements — IFRS S2 §27–36: Companies must disclose Scope 1, 2, and 3 greenhouse gas emissions using the GHG Protocol, with transition plans (§13–15) and scenario analysis (§22).
- Connected information with financial statements — IFRS S1 §21–24: Sustainability disclosures must be connected to the financial statements — explaining how climate risks affect financial position, performance, and cash flows.
- Industry-based SASB guidance — IFRS S2: The ISSB codified 77 SASB industry standards into IFRS S2's industry-based guidance — each industry has its own disclosure topics and metrics.