Nature Enters the Financial Reporting Architecture: Understanding the ISSB’s Proposed Nature-related Disclosure Framework

The International Sustainability Standards Board’s October 2026 Exposure Draft marks an important development in sustainability-related financial reporting. By proposing dedicated guidance for nature-related risks and opportunities, the ISSB is seeking to make corporate dependencies on ecosystems, environmental resources and natural systems more visible to investors and other providers of capital. The implications extend beyond environmental reporting, reaching corporate strategy, financial risk assessment, asset-level analysis and long-term business resilience.

The Emergence of Nature as a Financial Reporting Priority

For decades, the relationship between business activity and the natural environment has largely been examined through the lens of environmental management, regulatory compliance and corporate responsibility. Biodiversity loss, ecosystem degradation, water scarcity and changes in land use have traditionally been treated as environmental externalities, often considered separately from the financial information used to evaluate corporate performance.

That distinction is becoming increasingly difficult to sustain. Businesses depend on natural systems in ways that are not always reflected in conventional financial reporting. Agricultural production relies on soil quality, water availability and pollination. Manufacturing operations depend on reliable supplies of water, raw materials and other environmental resources. Infrastructure investments may be exposed to ecosystem degradation, while financial institutions can face indirect exposure through borrowers, investees and the economic activities they finance.

These dependencies create pathways through which changes in nature can affect operational continuity, production costs, asset values, revenue generation and access to capital. The International Sustainability Standards Board (ISSB) has now taken a significant step towards addressing these connections through its October 2026 Exposure Draft, IFRS Sustainability Disclosure Practice Statement 1 — Nature-related Disclosures.

The proposal seeks to establish more specific disclosure expectations for nature-related risks and opportunities that could reasonably be expected to affect an entity's cash flows, access to finance or cost of capital over the short, medium or long term. Its importance lies not simply in introducing additional environmental information into corporate reporting, but in reinforcing the principle that nature-related dependencies and impacts can have financially material consequences.

The ISSB is effectively seeking to bring nature-related considerations into the same decision-useful reporting architecture that already governs broader sustainability-related financial information under IFRS S1 and climate-related disclosures under IFRS S2.

Why the ISSB Is Proposing a Nature-related Practice Statement?

The development of the Exposure Draft follows a sequence of decisions reflecting increasing investor interest in nature-related financial information. Feedback received during the ISSB's 2023 consultation on agenda priorities highlighted growing demand for more consistent, comparable and verifiable disclosures concerning biodiversity, ecosystems and ecosystem services.

In April 2024, the ISSB initiated a research project addressing Biodiversity, Ecosystems and Ecosystem Services, initially referred to as BEES. The project was subsequently renamed Nature-related Disclosures, without changing its substantive scope.

By December 2025, the ISSB had decided to advance from research to standard-setting, recognising that existing sustainability disclosure requirements did not provide sufficient nature-specific guidance to address the common information needs of investors and other primary users of general purpose financial reports.

The resulting Exposure Draft builds upon IFRS S1 and IFRS S2 while drawing extensively on the recommendations, metrics and guidance developed by the Taskforce on Nature-related Financial Disclosures (TNFD).

However, the ISSB has deliberately proposed a Practice Statement rather than introducing a new standalone IFRS Sustainability Disclosure Standard. This distinction is central to understanding the proposal. IFRS S1 already requires entities to disclose material information about sustainability-related risks and opportunities that could reasonably be expected to affect their prospects. This includes financially material nature-related matters. The proposed Practice Statement is intended to supplement those existing requirements with more detailed provisions tailored to the characteristics of nature-related risks and opportunities.

An entity would not be required to apply the Practice Statement merely to assert compliance with IFRS Sustainability Disclosure Standards. Nevertheless, jurisdictions could choose to mandate its application, and entities could adopt it voluntarily alongside IFRS S1 and IFRS S2. For organisations electing or required to apply it, the proposed framework would carry substantive reporting implications. Compliance with the Practice Statement could only be claimed when the entity satisfies its applicable requirements together with those of the IFRS Sustainability Disclosure Standards.

As of November 2026, the document remains an Exposure Draft rather than a finalized reporting requirement. The ISSB has invited comments until 19 February 2027, after which it will consider stakeholder feedback and determine the final direction of the framework.

From Environmental Dependencies to Financial Materiality

One of the most important conceptual contributions of the proposed framework is its treatment of nature-related dependencies and impacts as potential sources of financial risk and opportunity. The Exposure Draft recognised that a company's business model and ability to generate cash flows can depend on the quality, availability and affordability of environmental resources and the benefits provided by ecosystems.

These benefits, commonly described as ecosystem services, include the contributions of natural systems to economic and other human activities. At the same time, companies can affect the environmental resources upon which they and other economic actors depend. Activities such as water extraction, land conversion, pollution and resource consumption can alter ecosystem conditions, potentially creating financial consequences for the organisation itself or other participants within its value chain.

This relationship is particularly important because nature-related financial risks can arise through both dependencies and impacts. A food producer may experience higher costs and lower output as a result of deteriorating soil conditions or declining water availability. A manufacturing business may face operational disruption where industrial water demand exceeds the capacity of a local watershed. A company whose activities contribute to habitat degradation may encounter regulatory restrictions, litigation exposure, reputational challenges or increased costs associated with environmental restoration.

These examples illustrate how nature-related physical risks and transition risks can emerge through different but interconnected channels.

The Exposure Draft defines nature-related physical risks as risks resulting from changes in the quality, availability or affordability of environmental resources and associated benefits. Such risks may arise from acute, chronic or cyclical changes in natural systems.

Nature-related transition risks, meanwhile, arise from efforts to mitigate or adapt to changes in environmental resources, including conservation, restoration and regeneration activities. They may involve policy, legal, technological, market or reputational developments.

Importantly, the ISSB proposes using the term environmental resources rather than the TNFD's terminology of environmental assets. This reflects the need to avoid implying that components of the natural environment necessarily meet the definition of assets under generally accepted accounting principles.

The proposed framework is therefore not attempting to place every ecosystem on a corporate balance sheet. Its objective is to identify and communicate the financial consequences of an entity's relationship with nature where those consequences are material to investment and financing decisions.

Why Location Becomes Central to Nature-related Financial Risk?

A defining characteristic of nature-related risks is their geographic specificity. Climate-related financial analysis often considers global emissions pathways, temperature trajectories and broad economic transition scenarios. Nature-related exposures, although interconnected with climate change, frequently depend on the ecological conditions of particular locations.

Water scarcity, biodiversity sensitivity, ecosystem degradation and access to natural resources can vary significantly between regions, watersheds and even individual operating sites. Two companies operating in the same industry may consequently face substantially different nature-related financial exposures depending on where their facilities, suppliers and commercial activities are located.

The Exposure Draft places considerable emphasis on this geographic dimension. In identifying nature-related risks and opportunities, entities would be expected to consider the location of assets and activities throughout their value chains, together with the characteristics of nature in those locations.

This represents a potentially significant development in corporate risk assessment. Traditional sustainability datasets frequently rely on consolidated, company-level indicators. Such information may reveal the overall scale of environmental impacts but can obscure important differences between individual facilities, production locations and sourcing regions.

A company may report relatively moderate aggregate water consumption while operating a critical production facility in a highly water-stressed basin. Similarly, a financial institution may have limited direct environmental impacts but substantial lending exposure to businesses operating in ecologically sensitive regions.

The financial significance of these exposures cannot always be understood through sector classification or company-wide environmental metrics alone. Location-specific assessment can therefore improve the identification of risk concentrations and the evaluation of potential operational and financial consequences.

The ISSB also recognise that the nature-related characteristics of a company's value chain may be difficult to assess comprehensively. Its proposal incorporates proportionality considerations, including the use of reasonable and supportable information available without undue cost or effort.

Nevertheless, the direction of the framework is clear: meaningful nature-related financial analysis increasingly requires an understanding of where economic activities interact with natural systems, rather than simply what those activities produce.

The Relationship Between the ISSB and the TNFD Framework

The proposed Practice Statement draws extensively on the TNFD framework, representing an important development in the relationship between voluntary nature-related disclosure initiatives and internationally recognised sustainability reporting architecture.

The TNFD has established a structured approach to understanding how organisations depend on and affect nature, and how those relationships generate financial risks and opportunities. Its LEAP methodology—Locate, Evaluate, Assess and Prepare—provides a systematic process for identifying and assessing nature-related issues.

The ISSB's Exposure Draft refers specifically to the TNFD's 2026 LEAP approach as a potentially useful methodology for identifying the locations of interactions with nature, evaluating dependencies and impacts, and assessing resulting risks and opportunities. However, the proposal does not require entities to apply LEAP to demonstrate compliance. This distinction reflects an effort to preserve methodological flexibility while strengthening disclosure outcomes.

An organisation may use LEAP or another suitable assessment process, provided that its approach supports the objectives of IFRS S1 and enables the identification of financially material nature-related information.

The relationship between the two frameworks also extends to metrics. The ISSB proposes allowing entities to refer to and consider TNFD disclosure metrics where they support the preparation of decision-useful information and do not conflict with IFRS Sustainability Disclosure Standards.

At the same time, the Exposure Draft maintains the relevance of industry-specific guidance, particularly the SASB Standards. The resulting architecture could facilitate greater consistency between organisations already undertaking TNFD assessments and those preparing sustainability-related financial disclosures under the IFRS framework.

However, TNFD alignment should not automatically be interpreted as equivalent to compliance with the proposed Practice Statement. The frameworks have related objectives but distinct reporting requirements, and their application must be evaluated accordingly.

Integrating Nature and Climate Risks into a Connected Assessment

Another important feature of the Exposure Draft is its recognition that nature-related and climate-related risks cannot always be assessed independently. Climate change can influence the condition and availability of environmental resources, while ecosystem degradation can increase exposure to climate-related hazards.

Deforestation, for example, can affect local hydrological systems, soil stability and the capacity of landscapes to absorb carbon. Changes in water availability can affect industrial production, agricultural activity and energy generation. Ecosystem restoration may simultaneously contribute to biodiversity objectives, climate adaptation and carbon sequestration.

The financial consequences of these interactions may be mutually reinforcing. The proposed framework therefore emphasises the need for connected information that enables users to understand relationships between nature-related and climate-related risks and opportunities. Entities would be expected to explain relevant connections across governance, strategy, risk management, and metrics and targets.

The Exposure Draft provides the example of an energy producer dependent on water for cooling. Its operational risk may be influenced by the combined effects of climate change and increased upstream water withdrawals, creating greater variability in river flows.

Considering either factor independently could understate the resulting exposure. This has significant implications for the design of corporate risk management systems. Organisations that have already developed climate risk assessments under IFRS S2 may possess relevant governance arrangements, scenario analysis capabilities and financial risk methodologies. However, nature-related risks introduce additional complexities associated with ecological conditions, spatial characteristics, ecosystem dependencies and local stakeholder relationships.

An integrated approach should therefore build on existing climate-related capabilities without assuming that climate risk models automatically capture nature-related exposures. The objective is to understand where risks overlap, reinforce one another or create trade-offs that influence corporate strategy and financial resilience.

Nature-related Scenario Analysis and Business Resilience

The Exposure Draft proposes requiring entities to use nature-related scenario analysis to assess the resilience of their strategies and business models to nature-related risks. This is among the most consequential proposals in the document.

Scenario analysis enables organisations to consider how different future conditions could affect their operations, value chains and financial prospects. In the context of nature, these conditions may involve changes in water availability, ecosystem functionality, environmental regulation, resource access or patterns of land use.

Unlike climate-related scenario analysis, which can draw upon relatively established global pathways and modelling approaches, nature-related scenario analysis remains an emerging discipline. Its application can be highly dependent on local ecological characteristics and asset-specific information. The ISSB explicitly acknowledges these challenges.

The Exposure Draft proposes proportionality mechanisms allowing entities to use reasonable and supportable information available without undue cost or effort and to adopt an analytical approach commensurate with their circumstances.

Consequently, the proposed requirements would not necessarily oblige every entity to develop complex quantitative ecological models. Where appropriate, qualitative scenario narratives could provide a suitable foundation for assessing resilience, particularly when more sophisticated modelling capabilities or reliable data are unavailable. For larger organisations and financial institutions, however, the development of more granular scenario analysis may become increasingly relevant.

A bank evaluating an agricultural lending portfolio, for example, could examine how changes in water availability, soil conditions and ecosystem degradation might affect borrower productivity, operating costs and debt-servicing capacity. An infrastructure investor could consider whether environmental degradation increases maintenance requirements, affects operational performance or creates additional regulatory obligations.

Such applications illustrate the potential for nature-related scenario analysis to strengthen conventional financial risk assessment. Nevertheless, the methodology requires careful treatment. Nature-related scenarios should not be presented as precise forecasts, and uncertainty surrounding ecological and financial transmission mechanisms must be communicated transparently.

The value of scenario analysis lies in improving understanding of plausible vulnerabilities and strategic responses, rather than producing a single definitive estimate of future financial losses.

Governance, Stakeholder Engagement and Corporate Decision-making

The proposed framework also recognised that nature-related financial risks are influenced by the relationships between businesses, environmental resources and affected communities. In identifying nature-related risks and opportunities, entities would be expected to consider their interactions, including engagement, with Indigenous Peoples, Local Communities and affected stakeholders.

This is particularly relevant where access to environmental resources, land use and ecosystem management intersect with legal rights, customary practices and community interests. The Exposure Draft proposes disclosures that would help users understand the relevant groups, the locations in which interactions occur and the outcomes of engagement where those outcomes are connected to financially material nature-related risks and opportunities.

For example, the framework refers to circumstances in which Free, Prior and Informed Consent may be relevant to activities involving environmental resources over which Indigenous Peoples or Local Communities hold rights. These considerations extend the analysis beyond the physical condition of ecosystems.

They recognise that nature-related risks can also emerge through the governance of natural resources, stakeholder relationships, legal entitlements and the social consequences of business activity. For companies, this creates an additional connection between environmental due diligence, stakeholder engagement and financial risk management.

The proposed disclosures should therefore be understood as part of a broader effort to explain how organisations identify, manage and respond to nature-related matters that could affect their prospects.

Metrics and Targets: Measuring Financial Exposure to Nature

One of the most practically significant proposals concerns the disclosure of assets and business activities exposed to nature-related risks and opportunities. The Exposure Draft proposes requiring entities to disclose the amount and percentage of assets or business activities vulnerable to identified nature-related risks, together with the amount and percentage aligned with nature-related opportunities.

This would provide investors with a more structured indication of how nature-related considerations intersect with an organisation's economic activities. The proposed measures could be particularly relevant to businesses with geographically dispersed operations, resource-intensive supply chains or significant exposure to sectors dependent on ecosystem services.

For financial institutions, similar analytical concepts could support the identification of concentrations within lending and investment portfolios, although the precise application of the proposed metrics would depend on the final requirements and relevant facts and circumstances.

The ISSB also proposes that entities consider appropriate aggregation and disaggregation, including whether location-based presentation is necessary to communicate material information. This is important because consolidated figures may conceal concentrations of nature-related exposure. The framework does not, however, prescribe a comprehensive universal set of biodiversity or ecosystem metrics applicable to every company.

Instead, it proposes specific cross-industry financial exposure metrics while permitting consideration of TNFD metrics and maintaining the relevance of industry-based guidance. The consultation explicitly seeks feedback on whether additional measures, such as spatial footprint, land and water-use change, or water withdrawal and consumption in water-scarce areas, should become mandatory cross-industry disclosures.

This remains an open question rather than a final requirement. The Exposure Draft also addresses the disclosure of nature-related targets established voluntarily or required by law or regulation, building on the existing requirements of IFRS S1.

For organisations, the resulting challenge will be to connect environmental indicators and operational targets with the financial exposures and strategic decisions that make the information relevant to capital providers.

What the Proposal Means for Banks and Financial Institutions?

The implications of the proposed framework extend beyond companies with substantial direct environmental footprints. Banks, insurers, asset managers and investment institutions can be exposed to nature-related risks through their financial relationships with economic activities that depend on environmental resources.

A bank financing agricultural production may face indirect exposure to declining soil productivity, water scarcity or ecosystem degradation. Credit exposure to manufacturing businesses may be affected by the availability of raw materials or environmental regulatory developments. Investments in infrastructure and real assets may carry location-specific dependencies that are not adequately captured by conventional sector-level analysis.

These exposures can influence financial performance through several channels, including borrower revenues, operating costs, collateral values and the resilience of financed activities. For financial institutions, the Exposure Draft reinforces the importance of understanding the environmental characteristics of counterparties and the geographic distribution of economic exposures.

However, identifying a nature-related dependency does not automatically establish a material credit or investment risk. Institutions must evaluate the pathways through which environmental changes could affect financial outcomes, taking account of exposure, vulnerability, adaptation capacity and relevant time horizons.

This distinction is essential for avoiding simplistic classifications in which entire sectors are treated as uniformly high risk. The proposed framework could encourage more sophisticated integration of nature-related considerations into portfolio analysis, environmental and social risk assessment, counterparty engagement and financial risk management.

It also highlights a persistent data challenge. Financial institutions frequently rely on information provided by borrowers and investees, while nature-related assessments may require facility-level locations, resource dependencies and environmental conditions that are not consistently available in conventional corporate disclosures. Improved nature-related reporting could therefore contribute to more informed capital allocation, but its usefulness will depend heavily on the quality and granularity of underlying information.

Interoperability with IFRS S1, IFRS S2, ESRS and GRI

The ISSB has developed the Exposure Draft with explicit consideration of interoperability with other sustainability-related reporting frameworks. The proposal is designed to operate alongside IFRS S1 and IFRS S2, rather than replacing or duplicating their general requirements.

It also recognised that organisations may prepare disclosures under the European Sustainability Reporting Standards and the Global Reporting Initiative Standards. The ISSB has therefore explored ways to reduce unnecessary duplication and allow relevant information developed under these frameworks to support IFRS-aligned reporting.

Nevertheless, important conceptual distinctions remain. IFRS Sustainability Disclosure Standards focus on information material to primary users of general purpose financial reports in making decisions about providing resources to an entity.

The European Sustainability Reporting Standards incorporate a double materiality approach, addressing both financial materiality and the material impacts of corporate activities on people and the environment.

Nature-related information developed under an impact materiality assessment may consequently provide valuable inputs into a financially focused analysis, but it cannot automatically substitute for the assessment required under IFRS S1.

Organisations reporting under multiple frameworks will need to maintain these distinctions while seeking opportunities to share underlying datasets, methodologies and governance processes. The proposed Practice Statement could support this integration by creating a clearer relationship between nature-related environmental information and its implications for corporate financial prospects.

Implementation Considerations and the Road Ahead

The Exposure Draft proposes that the Practice Statement become available for application from its eventual issuance, subject to the final decisions of the ISSB. Entities would be permitted to apply it where they apply IFRS S1 and IFRS S2 at or before the date of initial application. That initial application would begin at the start of an annual reporting period.

The proposal also includes transitional relief, under which entities would not be required to provide comparative disclosures for periods preceding their initial application of the Practice Statement. These provisions reflect the ISSB's intention to introduce nature-specific requirements without unnecessarily disrupting the global implementation of IFRS S1 and IFRS S2.

Nevertheless, organisations seeking to prepare for the potential framework should recognised that effective implementation may require capabilities extending beyond conventional sustainability reporting. Nature-related assessments depend on the identification of environmental dependencies, the mapping of relevant activities and locations, the evaluation of financial transmission mechanisms and the development of appropriate governance and data management arrangements.

The necessary information may be distributed across sustainability, procurement, operations, risk management, finance and investment functions. An integrated approach could help organisations use existing climate-related reporting systems as a foundation while developing the additional capabilities required for nature-related analysis.

Importantly, preparation should not be confused with an obligation to apply an unfinished standard. The Exposure Draft remains subject to consultation, and its final requirements may differ from the current proposals.

Conclusion: Nature-related Risk Is Becoming Part of Financial Decision-making

The ISSB's proposed Nature-related Disclosures Practice Statement represents an important development in the evolution of sustainability-related financial reporting. Its significance lies in the recognition that the natural environment is not merely a background condition for economic activity. Environmental resources and ecosystem services can influence business continuity, operating costs, asset performance, access to finance and long-term corporate resilience.

By building on IFRS S1 and IFRS S2, drawing upon the TNFD framework and introducing more specific expectations concerning geographic exposure, connected risks, scenario analysis and financial metrics, the ISSB is seeking to establish a more consistent foundation for communicating these relationships.

The proposal also reveals the methodological challenges that will shape the next phase of nature-related financial reporting. Ecological dependencies are often location-specific, financial transmission pathways can be complex, and reliable information may not be available at the level of detail required for sophisticated assessment.

Addressing these limitations will require more than additional disclosure templates. It will demand stronger connections between environmental data, corporate strategy, financial analysis and risk management. For companies, the emerging priority is to understand how their dependence on natural systems influences the resilience of their business models. For financial institutions, it is to identify where nature-related exposures may affect counterparties, assets and portfolios. For investors, it is to obtain information that distinguishes material financial vulnerabilities from broader environmental characteristics.

The October 2026 Exposure Draft does not yet establish a final global requirement for nature-related disclosures. It does, however, signal a clear direction in the development of international sustainability reporting.

As nature-related information becomes more closely connected to financial decision-making, the ability to understand and evaluate environmental dependencies may become an increasingly important component of corporate risk management and investment analysis.

The future of sustainability-related financial reporting will therefore be shaped not only by how organisations account for their impacts on the environment, but also by how effectively they understand the economic consequences of their dependence on it.