What are the ISSB standards IFRS S1 and IFRS S2?
IFRS S1 governs how a company reports material sustainability-related risks and opportunities that could affect its prospects. IFRS S2 applies the same reporting architecture specifically to climate-related risks and opportunities.
The IFRS Foundation introduction explains that the standards are designed to be applied together. They are investor-focused sustainability-related financial disclosures, not a list of every environmental or social metric.
What is the difference between IFRS S1 and IFRS S2?
IFRS S1 establishes the concepts, presentation and general disclosure requirements across sustainability topics. IFRS S2 supplements it with requirements for physical risks, transition risks and climate-related opportunities.
| Question | IFRS S1 | IFRS S2 |
|---|---|---|
| Subject | Material sustainability risks and opportunities | Material climate-related risks and opportunities |
| Role | General requirements and core concepts | Climate-specific requirements |
| Use | Applied across ISSB reporting | Applied with IFRS S1 |
| Industry guidance | Requires consideration of industry-based information | Includes climate-related industry guidance |
What are the four core disclosure areas?
Both standards organise disclosures under governance, strategy, risk management, and metrics and targets. Each area must explain what the company actually does, not merely name a policy.
The IFRS knowledge hub links these areas to decision-useful information for investors, lenders and other creditors. The same structure also makes internal ownership easier to assign.
How does materiality work under IFRS S1?
Information is material when omitting, misstating or obscuring it could reasonably influence decisions by primary users of general-purpose financial reports. Materiality therefore depends on the company's facts and circumstances rather than a universal ESG checklist.
A company first identifies sustainability-related risks and opportunities that could affect its prospects, then discloses material information about them. The assessment can change as the business and its operating context change.
What climate information does IFRS S2 require?
IFRS S2 covers climate governance, strategy, risk-management processes, metrics and targets. It includes physical and transition risks, climate-related opportunities and greenhouse-gas information where required.
The IFRS S2 page confirms that the standard addresses risks and opportunities that could affect cash flows, access to finance or cost of capital over the short, medium or long term.
When do IFRS S1 and S2 apply in Nigeria?
Nigeria's public-interest entities apply the standards mandatorily for accounting periods beginning on or after 1 January 2028, with SMEs following from 2030. Voluntary adopters must still follow the FRC readiness process.
The local timetable comes from the FRC, even though the standards themselves have an international effective date. See public interest entities before choosing a reporting phase.
How do GRI and TCFD relate to the ISSB standards?
GRI can complement ISSB reporting by addressing significant impacts on people, the economy and the environment. TCFD does not need to be applied in addition to IFRS S2 because its recommendations are incorporated into the ISSB standards.
The IFRS Foundation's TCFD page explains that the task force disbanded after its work transferred to the ISSB. Use the ISSB vs GRI page for the different audiences and materiality tests.
How should a Nigerian company start implementing IFRS S1 and S2?
Start with governance, materiality, reporting boundaries, data owners and a controlled evidence trail. Then map the resulting risks, opportunities and metrics into the four disclosure areas.
Emvert structures current Scope 1 and Scope 2 records for reporting. It is not affiliated with or certified by the IFRS Foundation or the FRC.