As sustainability reporting requirements evolve across jurisdictions, some companies may need to navigate both ISSB Standards and ESRS. Understanding the interoperability between the two frameworks can help these companies identify common requirements, avoid unnecessary duplication, and address framework-specific disclosures more efficiently.
This blog helps you understand where the two frameworks overlap, where they diverge, and what those differences mean for your reporting approach. It breaks down the key areas of interoperability, including materiality, climate-related disclosures, financial effects, targets and carbon credits, while highlighting where additional ESRS or ISSB disclosures may be required.
IFRS And ESRS: Different Frameworks, Increasingly Connected
Many companies are expected either to choose to apply both ESRS and ISSB Standards or to be required to do so. As jurisdictions around the world introduce the ISSB Standards as a global baseline, companies will be better prepared to meet disclosure requirements around the world.
The high degree of alignment between ISSB Standards and ESRS reduces complexity and duplication for companies applying both. ISSB Standards facilitate decision-useful information targeted at capital markets, enabling global comparison for investors.
At first glance, ISSB Standards and ESRS serve different reporting objectives. The ISSB Standards establish a global baseline of sustainability-related financial disclosures focused on information that is useful to investors and other providers of capital.
ESRS, meanwhile, have a broader mandate. They are designed to capture information relevant not only to investors but also to a wider range of stakeholders and European policy objectives.
This difference is particularly visible in how the two frameworks approach materiality. Yet their different objectives do not mean companies need to maintain completely separate sustainability reporting systems.
The ISSB, the European Commission, and EFRAG worked together during the development of the standards to align requirements where possible. According to the official interoperability guidance, this has resulted in a high degree of alignment in climate-related disclosures, with almost all climate-related disclosures in the ISSB Standards also reflected in ESRS.
Climate Reporting: Where Interoperability Is Strongest
The clearest example of interoperability is the relationship between IFRS S2 – Climate-related Disclosures and ESRS E1 – Climate Change. The official interoperability guidance provides a detailed mapping of corresponding requirements across the two standards, highlighting substantial alignment in areas such as governance of climate-related risks and opportunities, strategy and business model, climate-related risks and opportunities, GHG emissions, metrics and targets, transition planning, and current and anticipated financial effects.
This alignment creates an opportunity for companies to reuse underlying data, analysis, and disclosures rather than building completely separate reporting processes for each framework. For example, both frameworks require information on how climate-related risks and opportunities may affect a company’s financial position, financial performance, and cash flows.
However, companies must still assess the specific scope and requirements of each standard. Interoperability can reduce duplication, but it does not remove the need for framework-specific compliance.
Credibl ESG’s Take
Interoperability is more than just a way to meet reporting requirements. It gives companies an opportunity to manage their sustainability data more efficiently and reduce duplicate reporting efforts.
With greater alignment between ISSB and ESRS, companies can use common data, calculations, and disclosures across both frameworks wherever the requirements align. At the same time, they can identify and address the additional information required by each framework.
This is where technology can help. A Centralized ESG platform can bring sustainability data together, link data to relevant disclosures, maintain traceability from source data to reporting, and highlight where additional information is needed for specific frameworks.
For Credibl ESG, the practical value of interoperability is simple: collect data efficiently, manage it in one place, and reuse it across reporting requirements while meeting the specific needs of each framework.
Top 5 Most Frequently Asked Questions
1. Are IFRS Sustainability Standards and ESRS the same?
No. They have different objectives and scopes. ISSB provides a global baseline focused on sustainability-related financial information for investors, while ESRS has a broader stakeholder and EU policy-oriented remit. However, the two frameworks have a high degree of alignment, particularly for climate-related disclosures.
2. Can ISSB reporting satisfy ESRS requirements?
It can provide a strong baseline, particularly for climate-related disclosures, but it will not necessarily satisfy all ESRS requirements. Additional ESRS disclosures may be required because of ESRS’s broader scope and double materiality approach.
3. Is financial materiality the same under ISSB and ESRS?
The interoperability guidance states that the definition of financial materiality in ESRS is aligned with materiality under ISSB. However, ESRS additionally considers impact materiality, which is outside the ISSB materiality approach.
4. Where is the strongest alignment between ISSB and ESRS?
The strongest alignment is in climate-related reporting, particularly between IFRS S2 and ESRS E1. The interoperability guidance provides detailed mapping of the corresponding requirements.
5. What is the biggest benefit of ISSB–ESRS interoperability?
The biggest benefit is the potential to reduce duplicate data collection, reporting effort, and fragmented sustainability processes while improving consistency and comparability.
Bring sustainability data and disclosure requirements into one connected reporting workflow.
Explore Credibl’s CSRD & ESRS reporting solution or speak with the Credibl team about your sustainability reporting requirements.
