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Governance Authority
Category: Sustainability and ESG

Sustainability Materiality

Also known as: ESG Materiality, Materiality in Sustainability Reporting, Sustainability Materiality Assessment
Simply put

Sustainability materiality is the process a company uses to decide which environmental, social, and governance (ESG) topics matter enough to focus on and report. It helps organizations narrow a broad range of potential issues down to those most relevant to the business and its stakeholders. Because what counts as relevant differs by industry and stakeholder group, the outcome varies from one company to another.

Formal definition

Sustainability materiality is the process of identifying and assessing environmental, social, and governance (ESG) topics to determine which are sufficiently relevant to inform a company's sustainability strategy and reporting. A materiality assessment forms the basis for sustainability reporting by prioritizing the ESG topics most significant to a given entity. Materiality determinations are dynamic and industry-specific, and they reflect the perspectives of different stakeholder groups; the relationship between materiality and sustainability-related risks and opportunities can shift over time and by sector. Certain frameworks apply a 'double materiality' lens, distinguishing between the impact of sustainability matters on the entity and the entity's impact on society and the environment. Practitioners should note that specific reporting obligations and the applicable materiality concept depend on the jurisdiction, sector, and regime (for example, the EU Corporate Sustainability Reporting Directive) governing a particular entity; this entry is educational and not legal, audit, or compliance advice.

Why it matters

Sustainability materiality determines what a company treats as significant enough to inform its sustainability strategy and disclosures. Without a disciplined process for narrowing a broad universe of potential ESG topics down to those genuinely relevant, organizations risk either reporting on issues that carry little weight for their business or stakeholders, or overlooking topics that do. Because the way materiality relates to sustainability-related risks and opportunities is dynamic and industry-specific, a determination that is defensible for one entity or sector may not hold for another.

For boards and senior management, materiality assessments provide the basis for prioritizing where sustainability effort, oversight, and reporting resources are directed. The outputs shape what appears in sustainability reporting and, in some regimes, help connect that reporting to identified risks and opportunities. Because different stakeholder groups bring different perspectives on what is relevant, the process also serves as a structured way to reconcile competing views rather than relying on ad hoc judgment.

The applicable materiality concept and any associated reporting obligations depend on the jurisdiction, sector, and regime governing a particular entity. Some frameworks apply a 'double materiality' lens that distinguishes the impact of sustainability matters on the entity from the entity's impact on society and the environment; for example, the EU Corporate Sustainability Reporting Directive is associated with a double materiality approach. Because these obligations vary and materiality determinations are not static, organizations generally revisit assessments over time rather than treating them as a one-off exercise. This entry is educational and not legal, audit, or compliance advice.

Who it's relevant to

Boards and Board Committees
Boards and their relevant committees generally rely on materiality assessments to understand which ESG topics warrant oversight attention and how those topics relate to the entity's risks and opportunities. The outputs inform the board's review of sustainability strategy and disclosure, though responsibility for conducting the assessment typically sits with management.
Sustainability and ESG Reporting Teams
These teams generally own the mechanics of the assessment, identifying candidate topics, engaging stakeholders, and prioritizing issues, and use the results to determine the scope of sustainability reporting. Because the applicable materiality concept can vary by regime, they need to track which framework or regulation applies to the entity.
General Counsel and Compliance Functions
Where an entity is subject to a regime with sustainability reporting obligations, such as the EU Corporate Sustainability Reporting Directive, legal and compliance functions help confirm which materiality concept applies and how the assessment supports required disclosures. The specific obligations depend on jurisdiction, sector, and entity type.
Risk Management Functions
Because the relationship between materiality and sustainability-related risks and opportunities is dynamic and industry-specific, risk functions can help integrate material ESG topics into the organization's broader view of risk, supporting management's ability to reassess priorities as conditions change over time.
Internal Audit and Assurance Providers
Assurance functions may review whether the materiality assessment process was applied consistently and whether reporting reflects the topics identified as material. Their focus is generally on the integrity of the process and resulting disclosures rather than on setting materiality priorities themselves.

Inside Sustainability Materiality

Financial (Outward-In) Materiality
The perspective concerned with how sustainability matters affect the entity's own financial position, performance, cash flows, and enterprise value. This lens generally aligns with investor-focused disclosure frameworks and treats environmental, social, and governance factors as sources of financial risk and opportunity to the reporting entity.
Impact (Inward-Out) Materiality
The perspective concerned with the entity's actual and potential impacts on the economy, environment, and people, regardless of whether those impacts affect the entity's own financials. This lens is typically associated with a broader stakeholder and societal audience.
Double Materiality
An approach that combines both financial and impact perspectives, requiring an entity to consider a matter material if it is significant from either lens. It features prominently in certain jurisdictions' sustainability reporting regimes, though whether it is a binding requirement depends on the applicable law, sector, and entity type.
Materiality Assessment Process
The structured exercise through which an entity identifies, evaluates, and prioritizes sustainability topics, typically involving stakeholder input, evidence gathering, and the application of thresholds. The process and its rigor vary by framework and are subject to management judgment.
Stakeholder Engagement
The identification of and dialogue with parties who affect or are affected by the entity, used as an input to determining which topics matter. The scope of relevant stakeholders differs depending on whether a financial or impact lens is applied.
Materiality Thresholds and Prioritization
The criteria used to distinguish material from non-material topics, often assessed through the magnitude, likelihood, and scope of a matter. These criteria are matters of judgment and generally differ between the financial and impact perspectives.

Common questions

Answers to the questions practitioners most commonly ask about Sustainability Materiality.

Is sustainability materiality the same as financial materiality used in traditional accounting and audit?
Not necessarily. The two concepts overlap but are not interchangeable, and the relationship depends on which framework or regime applies. Traditional financial materiality generally concerns information that could influence the economic decisions of investors and other users of financial statements. Sustainability materiality is often framed more broadly. Under certain frameworks a distinction is drawn between financial materiality (how sustainability matters affect the entity's value, sometimes called an outward-in or enterprise-value lens) and impact materiality (how the entity affects people and the environment, an inward-out lens). Some regimes combine both into a so-called double materiality assessment, while others focus primarily on matters relevant to enterprise value. Because the boundaries differ by framework, jurisdiction, and reporting obligation, professionals should confirm which definition governs a given disclosure rather than assuming equivalence with accounting materiality. This entry is educational and not legal, audit, or accounting advice.
Does conducting a sustainability materiality assessment mean a company is legally required to report on every topic it identifies?
Not automatically. Whether a disclosure obligation is binding depends on the applicable regime, and requirements vary by jurisdiction, sector, and entity type. In some jurisdictions certain sustainability reporting is a legal or listing requirement for in-scope entities; in others, reporting rests on voluntary frameworks, codes, or best practice. A materiality assessment is generally a process to help identify and prioritise topics, but it does not by itself determine the legal status of any resulting disclosure. Identifying a topic as material typically informs what an entity chooses or is required to report and how, but the source of any obligation is the applicable law, regulation, or standard, not the assessment itself. Entities should confirm their specific obligations, which may depend on facts and professional judgment.
Who within the organisation should own the sustainability materiality assessment, and what is the board's role?
Ownership and oversight are typically distinct. In many organisations, management is responsible for designing and conducting the assessment, gathering data, engaging stakeholders, and proposing the resulting priorities, while the board or a relevant committee generally provides oversight and may review or approve the outcome and its use in disclosure. The specific allocation depends on the entity's governance structure, delegated authorities, and any applicable requirements. Assurance functions, where engaged, may separately provide independent evaluation of the process or resulting disclosures rather than performing the assessment themselves. Entities should map roles against their own committee charters and delegation frameworks; there is no single universally mandated allocation.
How should an organisation approach stakeholder engagement as part of a materiality assessment?
Approaches vary by framework and by the entity's circumstances. Many methodologies contemplate identifying relevant stakeholder groups and gathering their views to help assess which topics are significant, particularly where an impact materiality lens is used. The depth, formality, and range of engagement generally depend on the framework applied, the entity's size and sector, and the resources available. Some frameworks emphasise structured engagement while others allow more flexibility. Entities should document how stakeholders were identified and how their input was considered so the process can be explained and, where relevant, reviewed. The appropriate design is a matter of judgment and should align with any applicable reporting standard.
How often should a sustainability materiality assessment be refreshed?
There is no single universally mandated frequency; practice and any applicable requirements vary. Many organisations revisit their assessment periodically and also when significant changes occur, such as shifts in the business, operating environment, regulatory expectations, or stakeholder concerns. Some reporting frameworks or regimes may specify or imply expectations about timing or triggers for reassessment, so entities should confirm what their applicable standards require. As a general matter, an assessment that is not periodically reviewed risks becoming outdated. The appropriate cadence depends on the entity's facts and professional judgment.
How does a materiality assessment connect to an organisation's enterprise risk management and control processes?
The two are related but serve different purposes and should not be conflated. A sustainability materiality assessment generally helps prioritise topics for reporting and, in some designs, informs strategy. Enterprise risk management is a broader function concerned with identifying, assessing, and responding to risks to objectives. Where sustainability topics represent risks to the entity, they may feed into or align with the risk management process, and some entities integrate the two to promote consistency. However, materiality for disclosure and risk significance for management are assessed against different criteria and may not always coincide. Where these processes are integrated, entities typically remain careful to preserve the distinct roles of management ownership, board oversight, and any independent assurance. The specific integration is a matter of design and judgment.

Common misconceptions

Sustainability materiality is the same as the materiality concept used in financial statement audits.
While related in spirit, sustainability materiality is generally broader and, under certain frameworks, encompasses impacts on people and the environment that may not be quantifiable in financial terms. The financial-audit notion focuses on what could influence the economic decisions of financial statement users, whereas impact materiality considers a wider audience. Whether and how they overlap depends on the applicable framework.
Double materiality is a universal legal requirement that all entities must apply.
Double materiality features in certain jurisdictions' reporting regimes, but it is not universally mandatory. Some frameworks are investor-focused and emphasize financial materiality only. Whether an entity must apply a double-materiality approach depends on jurisdiction, sector, listing status, and entity type, and this remains a matter to confirm against the specific rules that apply.
The materiality assessment is a one-time exercise owned by the sustainability team alone.
A materiality assessment is typically expected to be revisited periodically as conditions change, and its governance generally involves management for execution and the board or a relevant committee for oversight. Accountability for the assessment's integrity does not rest with a single function in isolation; the allocation of responsibilities depends on the entity's governance structure.

Best practices

Clarify at the outset which materiality lens or lenses apply, financial, impact, or both, based on the specific frameworks and legal requirements relevant to your jurisdiction, sector, and entity type, and document that scoping decision.
Define and document the thresholds and criteria used to prioritize topics separately for the financial and impact perspectives, since a matter may be significant under one lens but not the other.
Establish a structured, evidence-based process for stakeholder engagement that identifies both those who affect and those affected by the entity, and retain records supporting how their input informed the assessment.
Clearly assign roles: have management own the execution of the assessment and its methodology, while the board or a designated committee provides oversight and challenge, avoiding conflation of operational and oversight duties.
Revisit the materiality assessment on a defined cadence and upon significant changes in the entity's operations, environment, or regulatory landscape, rather than treating it as a static, one-time output.
Confirm conclusions against the precise provisions of the applicable frameworks and regulations, and treat internal analysis as informational rather than a substitute for legal, audit, or compliance advice.