Double materiality assessment: a practical guide for Dutch SMEs

Most Dutch SMEs approach ESG reporting the same way: pick a framework, start collecting data, and figure out what to report as you go. The double materiality assessment is the step they skip, and it’s the one that determines whether everything else is worth doing.

Here’s the problem that creates. A logistics company in Noord-Holland spends three months tracking biodiversity metrics because a guide said they were important under CSRD. A professional services firm in Amsterdam builds an elaborate water-consumption reporting system for a business that uses roughly as much water as a small apartment building. Neither company did a materiality assessment first. Both were collecting data nobody would ever ask for.

The double materiality assessment is how you avoid that. It’s a structured analysis that tells you exactly which sustainability topics are relevant to your specific business, and which ones you can legitimately ignore. Done properly, it cuts your ESG reporting workload in half. Done wrong, or skipped entirely, it means you are either over-reporting on things that don’t matter or under-reporting on things that do.

This guide explains the concept, the simplifications that made it significantly more practical, and a six-step process that most Dutch SMEs can complete in two to four weeks without external help.

For a current picture of what is and isn’t legally enforced for Dutch businesses, the current ESG compliance obligations in the Netherlands guide covers the specifics.

What double materiality actually means

The term sounds technical. The concept is straightforward.

“Materiality” in reporting means relevance: an issue is material if it’s significant enough to be disclosed. Double materiality applies this test from two different directions simultaneously.

• Impact materiality (inside-out): How does your business affect the world? This covers the effects of your operations on people, communities, and the environment; emissions from your production processes; labour conditions in your supply chain; water use in water-stressed areas; and waste generated at your facilities. Impact materiality looks outward from your business.

  
  

• Financial materiality (outside-in): How does the world affect your business? This covers the sustainability-related risks and opportunities that could affect your revenue, costs, access to finance, and long-term viability, rising carbon prices, regulatory changes, extreme weather disrupting your supply chain, and reputational risks from poor social practices. Financial materiality looks inward at your business.

A sustainability topic passes the double materiality test if it’s significant from either perspective, impact materiality, financial materiality, or both. If it passes, you report on it. If it fails both tests for your specific business, you can legitimately exclude it.

This is not a subjective exercise. EFRAG’s guidance under ESRS 1 sets specific criteria for determining materiality, including thresholds for severity, scale, scope, likelihood, and remediability. The full methodology is documented in EFRAG’s materiality assessment implementation guidance, published May 2024. But applying those criteria to your business requires judgment, which is why the assessment can’t be automated or copied from a competitor’s report.

Why it’s the most important step in ESG reporting, and the most skipped

The double materiality assessment is the foundation of CSRD reporting. Every disclosure requirement, every data point, every metric in your sustainability report flows from the topics you determined to be material. If your assessment is wrong, your entire report is built on the wrong foundation.

And yet it’s the step most SMEs either skip or rush through. There are understandable reasons for this. The original ESRS guidance was genuinely complex. Early implementations were process-heavy and documentation-intensive. Some consulting firms turned it into a six-month project when it didn’t need to be.

That changed significantly in 2025. EFRAG published revised ESRS exposure drafts on July 31, 2025, that considerably simplified the double materiality assessment process, moving away from a checklist-heavy, bottom-up approach toward a more strategic, top-down analysis. The revised drafts removed 61% of mandatory data points compared to the original ESRS standards. A formal delegated act adopting the simplified ESRS is expected by mid-2026.

For Dutch SMEs doing a double materiality assessment today, the 2025 simplifications are the framework to follow, not the original 2023 ESRS. Most online guides still describe the old, more complex process.

What are IROs? Understanding the building blocks

Before working through the assessment steps, you need to understand IROs, because the whole process is built around identifying and scoring them.

IRO stands for Impacts, Risks, and Opportunities.

• Impacts are sustainability-related effects your business has on people and the environment, both actual (happening now) and potential (could happen in future). They can be positive or negative. An impact might be: the CO₂ your delivery fleet emits, the labour conditions at your Tier 2 supplier in Vietnam, or the local employment your business creates in a rural area.

• Risks are sustainability-related financial threats to your business. Regulatory risk (new carbon pricing affecting your margins), physical risk (flooding disrupting your distribution centre), and transition risk (customers shifting to lower-carbon alternatives) are all ESG risks with financial materiality.

• Opportunities include sustainability-related financial upsides, access to green finance at preferential rates, new markets opened by your sustainable product line, cost savings from energy-efficiency investments, or a competitive advantage from strong ESG credentials in procurement processes.

Every material topic in your sustainability report needs at least one identified IRO defined in ESRS 1 General Requirements. Your assessment process is essentially a structured method for identifying all the IROs relevant to your business, scoring their significance, and deciding which ones cross the materiality threshold.

What the 2025 ESRS simplification means in practice

This is the part that most guides written before August 2025 are missing.

The original double materiality assessment required companies to conduct exhaustive bottom-up assessments of all sustainability topics listed in ESRS 1, often leading to what EFRAG’s own stakeholder feedback described as “boilerplate” analyses that were heavy on process and light on strategic insight.

The 2025 revised ESRS exposure drafts introduced three practical changes that significantly reduce the workload:

1. The top-down approach is now accepted

Companies can now, based on their business model, directly determine whether certain topics are clearly material or clearly non-material, without first conducting a detailed IRO assessment for every topic. A manufacturing company doesn’t need to spend two weeks analysing whether water consumption is material; it obviously is. A digital services company doesn’t need to assess biodiversity impacts at operational sites exhaustively; they almost certainly don’t have any.

This single change eliminates the most time-consuming part of the original process for most SMEs.

2. Existing processes count

If your business already involves affected stakeholders through due diligence processes, supplier audits, employee consultations, and community engagement, those insights can directly inform your materiality assessment without requiring a separate engagement process.

3. Evidence requirements are more flexible

The revised standards clarify that qualitative information from stakeholders and management judgment is valid evidence for materiality conclusions, not just quantitative metrics. For topics where hard data doesn’t exist, well-documented reasoning is sufficient.

The key point: if you have been avoiding the double materiality assessment because it seemed too complex, the 2025 version is substantially more manageable. The core concept, two-dimensional materiality testing, hasn’t changed. The process to implement it has.

Double materiality vs single materiality: the difference that matters

Many Dutch businesses are familiar with single materiality from GRI-based sustainability reporting or from financial reporting standards. The difference is important.

	Single materiality (financial)	Single materiality (impact)	Double materiality
What it asks	How do ESG issues affect the company?	How does the company affect the world?	Both questions simultaneously
Primary audience	Investors and lenders	NGOs, communities, employees	Investors, lenders, and wider stakeholders
Used in	IFRS S1/S2, TCFD	GRI	CSRD/ESRS, VSME
Direction	Outside-in only	Inside-out only	Both directions
Result	Financial risk register	Impact disclosure	Combined material topics list

The critical practical implication: a topic can be material under double materiality even if it has no direct financial impact on your business. Suppose your operations have a significant negative impact on local communities, even if that impact doesn’t currently affect your revenue. It has an impact material and should be disclosed.

This is the aspect of double materiality that most SMEs find surprising. They expect the assessment to focus on what affects them. It equally focuses on what they affect.

If you have over 1,000 employees and are subject to mandatory CSRD reporting, the full process is covered in the CSRD requirements guide.

How the double materiality assessment relates to VSME

If you qualify for the VSME standard (under 1,000 employees after the March 2026 Omnibus), you are not formally required to conduct a double materiality assessment. VSME uses an “if applicable” approach; you report on topics relevant to your business without a mandated formal assessment process.

But here’s why you should do a lightweight version anyway, even as a VSME reporter:

The “if applicable” approach still requires you to have thought through which topics apply and which don’t. Without any kind of structured materiality thinking, your disclosure decisions are arbitrary. If a stakeholder or bank asks why you didn’t disclose on a particular topic, “we didn’t think it applied” is a weaker answer than “we assessed it against our operations and determined it was not material because [reason].”

A lightweight double-materiality assessment, two to three hours with your leadership team, and a simple spreadsheet document give you the reasoning behind your VSME disclosure choices. It also ensures you are not collecting data for topics that genuinely don’t matter to your business while missing ones that do.

For VSME reporters, think of this as a “materiality assessment light” rather than the full CSRD-mandated process. The concepts are the same; the documentation requirements are much lower.

For more on the VSME standard and its reporting modules, read the full VSME standard guide for Dutch SMEs.

The six-step double materiality assessment process for Dutch SMEs

This process reflects the 2025 simplified ESRS approach. It is designed for an SME with no dedicated sustainability function and uses only internal resources.

Time required: two to four weeks, depending on business complexity.

People required: leadership (CEO/director), finance, operations, HR, and one person to coordinate.

Output: a prioritised list of material ESG topics that determines your reporting scope

Step 1: Map your business context (days 1–3)

Before you can assess materiality, you need a clear picture of what your business actually does and where its sustainability touchpoints are.

Document the following:

• Your core business activities and how they generate revenue

• Your value chain - who your key suppliers are, what they produce or provide, and where they operate geographically

• Your customer base - who buys from you, what sectors they are in, and whether any are subject to CSRD reporting obligations themselves

• Your operational footprint - locations, facilities, company vehicles, energy sources, headcount

If any of your operational sites draw on local water sources, use the free WRI Aqueduct water risk tool to check whether you are in a water-stressed area, which directly affects whether water becomes a material topic in Step 3.

This isn’t a full sustainability audit. It’s a structured description of how your business interacts with the environment and society. A 15-employee professional services firm in The Hague has a very different footprint than a 200-employee food manufacturer in Noord-Brabant. Your context determines which topics are even worth assessing.

Step 2: Build your longlist of sustainability topics (days 3–5)

Using the ESRS topic list as your starting point, create a longlist of all sustainability matters that could potentially be relevant to your business. The ESRS cover ten topic areas:

Environmental:

• Climate change (mitigation, adaptation, energy)

• Pollution (air, water, soil, living organisms)

• Water and marine resources

• Biodiversity and ecosystems

• Resource use and circular economy

Social:

• Own workforce (conditions, rights, health and safety)

• Workers in the value chain

• Affected communities

• Consumers and end-users

Governance:

• Business conduct (anti-corruption, anti-competitive behaviour, lobbying, payment practices)

Don’t try to score these yet. At this stage, you are just asking: “Could this topic possibly be relevant to our business?” If in doubt, include it. You will narrow it down in the next step.

For a Dutch SME in professional services, your longlist will probably be 8–12 topics. For a manufacturer or logistics company, it could be 20+.

Step 3: Apply the top-down filter (days 5–7)

This is where the 2025 simplification pays off. Using your business context from Step 1, go through your longlist and apply a direct top-down assessment to each topic:

Clearly material: Topics that are obviously significant for your business, either because your operations clearly cause significant impacts, or because your business is clearly financially exposed. Don’t spend time scoring these; mark them material and move on.

Clearly not material: Topics that are obviously irrelevant to your business model, operations, and value chain. A digital consultancy doesn’t need to conduct a detailed analysis of biodiversity impacts at operational sites. Document your reasoning briefly (“no operational sites with significant land use”) and exclude the topic.

Requires further analysis: Topics that aren’t obviously material or immaterial. These are the topics you will score in Step 4.

The top-down filter should eliminate roughly half your longlist immediately. Everything that’s clearly material or clearly immaterial doesn’t need detailed IRO scoring. Only the uncertain topics get the full treatment.

Step 4: Score your uncertain topics using the IRO framework (days 7–12)

For each topic that requires further analysis, identify the specific IROs and what the actual impacts, risks, and opportunities this topic creates for your business are.

For impact materiality, score each IRO on:

• Scale: How severe is the impact? (1 = minor, 5 = severe)

• Scope: How many people or how much environment is affected? (1 = very limited, 5 = widespread)

• Remediability: How reversible is the impact? (1 = easily remediated, 5 = irreversible)

• Likelihood: How probable is the impact occurring? (1 = very unlikely, 5 = already occurring)

For financial materiality, score each IRO on:

• Magnitude: How significant is the financial effect? (1 = minor, 5 = severe)

• Likelihood: How probable is the financial effect? (1 = very unlikely, 5 = highly likely)

• Time horizon: Short (under 1 year), medium (1–5 years), or long-term (over 5 years)

Use a simple 1–5 scoring scale. You don’t need sophisticated software. An Excel spreadsheet with one row per IRO and columns for each scoring criterion works for most SMEs.

Set a threshold, for example, a combined score of 12 or above out of 20 for impact materiality, and 7 or above out of 10 for financial materiality. Any IRO scoring above your threshold is material—any topic with at least one material IRO gets included in your reporting scope.

Your thresholds are your own; EFRAG doesn’t prescribe them. But you do need to document what thresholds you used and why. Your auditor or assurance provider will want to see this.

Step 5: Engage stakeholders to validate your findings (days 12–16)

Stakeholder engagement is required under CSRD and recommended for VSME. But it doesn’t need to be an elaborate multi-month process.

For most Dutch SMEs, a proportionate stakeholder engagement means:

Internal stakeholders: present your draft list of material topics to department heads and ask whether anything significant is missing from their perspective. Finance sees regulatory risk differently from operations. HR sees workforce topics differently from procurement.

External stakeholders: this is where most SMEs get intimidated, but it doesn’t require hiring a consultancy to run focus groups. Practical options include:

• A five-question survey sent to your top 10 customers

• A conversation with two or three key suppliers about which sustainability topics they are being asked about

• A review of what your industry association publishes about sector ESG priorities

• A check of what your bank has flagged in any sustainability due diligence correspondence

The goal is to verify that your internal assessment hasn’t missed something significant that external parties would flag. It’s a validation step, not a primary research exercise.

If you already conduct supplier audits or employee engagement surveys, the insights from those processes count as stakeholder engagement for your DMA; you don’t need a separate process.

Step 6: Document and finalise your material topics list (days 16–20)

Your output from Steps 1–5 is a list of material ESG topics for your business. This becomes the foundation of your sustainability report; you only need to collect data and disclose against material topics.

Your documentation should record:

• The methodology you used (top-down filter + IRO scoring)

• Which topics did you assess, and what was the outcome for each

• The scoring criteria and thresholds you applied

• Which stakeholders did you engage with, and how

• The final list of material topics with a brief justification for each inclusion and exclusion

This doesn’t need to be a 50-page document. A clear 5–10 page summary with your scoring spreadsheet attached is sufficient for most SMEs and provides adequate documentation for limited assurance purposes.

One Dutch example worth studying: Philips conducted one of the first large-scale double-materiality assessments in the Netherlands on its approach. Their public annual report shows how the multi-stakeholder process was structured and how material topics were identified and prioritised across a complex value chain. For an SME, the scope is narrower, but the logic is identical.

Once your material topics list is final, the next step is building your data collection process around it. Read how to collect ESG data once you know your material topics for the practical follow-through.

The materiality matrix: useful tool or compliance decoration?

Most double materiality guides include a materiality matrix, a two-axis chart plotting topics by their impact materiality score (one axis) and financial materiality score (the other), with material topics appearing in the top-right quadrant.

The matrix is a useful communication tool. It presents the output of your assessment in a format that stakeholders, auditors, and lenders can read quickly. It makes your reasoning visible.

It is not, however, the assessment itself. The assessment is the thinking you did in Steps 1–6. The matrix is just a way of presenting the results. Some SMEs spend more time formatting their matrix than doing the underlying analysis. That’s backwards.

Build the matrix after you have done the work. Don’t let it drive the work.

Common mistakes Dutch SMEs make in their materiality assessment

Copying from a competitor’s report. Your material topics reflect your specific business model, value chain, and operational footprint. A Dutch food manufacturer and a Dutch IT consultancy might share an industry classification but have almost no material topics in common. A copied assessment is also easily challenged by auditors.

Doing it once and forgetting it. Material topics change as your business changes, new product lines, new markets, new suppliers, and new regulations. EFRAG guidance requires annual review and update. In practice, a full reassessment every 3 years, with an annual light review, is the norm for most SMEs.

Treating it as purely a compliance exercise. The double materiality assessment is also a risk management tool. The financial materiality dimension of your assessment is essentially an ESG risk register. Companies that treat it strategically, using it to inform procurement decisions, investment priorities, and supplier selection, get more value from it than companies that treat it as a box to tick.

Excluding positive impacts. The 2025 ESRS amendments explicitly clarified that positive impacts on people and the environment are subject to materiality assessment, too, provided they are material. If your business genuinely creates significant positive environmental or social value, that’s part of your disclosure, not just your marketing.

Underestimating value chain scope. CSRD and ESRS require you to consider impacts and risks across your upstream and downstream value chain, not just within your own operations. For SMEs with complex or geographically dispersed supply chains, this is the most challenging part of the assessment. Start with your highest-spend suppliers and highest-risk geographies and work outward from there.

How long does a double materiality assessment take?

Honest answer: It depends on your business complexity, not on how carefully you read the guidelines.

Business type	Realistic timeframe	What drives the variation
Under 10 employees, services sector, simple supply chain	1–2 weeks	Limited value chain scope, few operational impacts
10–50 employees, mixed sector	2–4 weeks	Some supply chain complexity, more stakeholder groups
50–250 employees, manufacturing or logistics	4–8 weeks	Complex value chain, multiple operational sites, more IROs to score
250–1,000 employees, multi-sector or international	8–16 weeks	Multiple business units, an international supply chain, and formal stakeholder engagement are required.

The biggest time variable is stakeholder engagement. If you already have structured processes for talking to suppliers and employees about sustainability, you can complete engagement in days. If you are starting from scratch, it takes longer.

Don’t let the upper end of these ranges discourage you from starting. A completed assessment that took four weeks and has some rough edges is more useful and more defensible than a perfect assessment you haven’t started yet.

FAQ: Double materiality assessment

What is a double materiality assessment in simple terms?

It's a structured way of deciding what to include in your sustainability report. It asks two questions about every possible ESG topic: Does this topic affect our business financially? Does our business affect people or the environment through this topic? If the answer to either question is yes and the impact is significant, the topic is material, and you report on it. If the answer to both questions is no, you can exclude it. The assessment is what separates a focused, relevant sustainability report from one that either covers everything indiscriminately or misses what actually matters.

Is a double materiality assessment mandatory for Dutch SMEs?

It depends on your size. Companies above the CSRD thresholds, over 1,000 employees, after the Omnibus Directive entered into force on March 18, 2026, are required to conduct a formal double materiality assessment. SMEs below those thresholds using the VSME standard are not formally required to run the full process. However, even VSME reporters need to think through which disclosures apply to their business, and a lightweight materiality assessment is the most defensible way to document those decisions.

How long does a double materiality assessment take for a small business?

For a service-sector SME with under 10 employees and a straightforward supply chain, two weeks is realistic. For a manufacturer or logistics company with a more complex operational footprint, four to eight weeks is more accurate. The single biggest time driver is stakeholder engagement. If you already have structured conversations with suppliers and employees, you can complete this part quickly. If you are starting from scratch, build in more time.

What is the difference between impact materiality and financial materiality?

Impact materiality asks how your business affects the world, the emissions you generate, the labour conditions in your supply chain, and the waste from your facilities. Financial materiality asks how the world affects your business, how rising carbon prices affect your margins, how new environmental regulations create compliance costs, and how reputational risks from poor supply chain practices affect customer retention. A topic can be material from one direction, the other, or both. CSRD and ESRS require you to test both.

What are IROs and why do they matter?

IRO stands for Impacts, Risks, and Opportunities. They are the specific sustainability-related effects, positive and negative, that you identify for each material topic in your assessment. Identifying IROs is the core analytical work of the double materiality assessment. For each ESG topic you are assessing, you identify what actual or potential impacts your business has, what risks those create financially, and what opportunities they open. You then score those IROs to determine whether the topic as a whole crosses your materiality threshold. The IROs from your assessment serve as the basis for your ESRS disclosures under IRO-1 and IRO-2.

Do I need a consultant to run a double materiality assessment?

No, though it helps to have someone coordinate the process. The analytical work requires people who understand your business, not people who understand ESRS. Your CEO, CFO, and operations lead, together, have more relevant knowledge for a double-materiality assessment than a sustainability consultant who doesn't know your sector. What a consultant can add is process structure, familiarity with how assessors and auditors evaluate materiality decisions, and the ability to challenge conclusions. If your budget is limited, use the EFRAG implementation guidance and this process as your framework, and consider one day of external review before you finalise your conclusions.

How often should we update our materiality assessment?

EFRAG guidance requires an annual review, not necessarily a full reassessment, but a documented check to see whether anything significant has changed. In practice: conduct a full reassessment when your business model changes significantly (new product lines, new markets, acquisitions, major changes to your supply chain), and do a lighter annual review otherwise. The annual review should ask: Have any new ESG topics emerged in our sector? Have any topics we previously excluded become more significant? Have our stakeholders’ priorities shifted? An hour with your leadership team once a year, documented in a brief update to your original assessment, is sufficient for most SMEs.