Understanding and using IROs: The key to materiality assessment (CSRD)
Find out how companies can identify and assess IROs (Impacts, Risks & Opportunities) in accordance with CSRD.
- IROs (Impacts, Risks and Opportunities) are the core of the double materiality assessment under CSRD.
- Impacts describe how your company affects people and the environment. Risks and opportunities describe how sustainability issues affect your company.
- Every IRO must be categorized and scored on scale, scope, reversibility, and probability.
- Assigning IROs to ESRS topics determines which data points you need to report.
- Excel templates, AI prompts, and specialized software make IRO identification and evaluation practical and audit-ready.
With the introduction of the Corporate Sustainability Reporting Directive (CSRD), companies must disclose not only their financial performance but also their environmental, social and governance (ESG) impacts in detail. A central element of this reporting is the double materiality assessment. At the heart of that assessment are IROs: Impacts, Risks and Opportunities.
What does IRO stand for?
The abbreviation IRO stands for "Impacts, Risks and Opportunities." It was introduced by the European Sustainability Reporting Standards (ESRS). These terms describe the key aspects a company must take into account regarding sustainability. It covers both the potential negative effects a company has on people and the environment, and the opportunities and risks that arise for the company itself.
What are IROs in the CSRD context?
IROs are central concepts in sustainability reporting. They form the basis for materiality assessment under ESRS and help companies identify and systematically assess their material sustainability issues.
1. Impacts
Impacts refer to the positive or negative effects a company exerts on people and the environment through its business activities, products or services. These effects can be immediate, long-term, direct or indirect. Under CSRD, companies must record, evaluate and report both negative and positive impacts.
The activities of the upstream and downstream value chain must also be taken into account, not just the company's own operations.
An example of a negative impact is pollution from industrial waste. A positive impact could be the creation of high-quality jobs in disadvantaged regions.
2. Risks
Risks include potential negative financial, legal, environmental or social consequences a company could face due to sustainability issues. These risks can arise from the company's own business practices, from changes in legislation, or from market conditions. They can also come from the practices of the upstream and downstream value chain.
Risks for the company can often be derived from negative impacts. Connecting risk management with the CSRD materiality assessment makes sense: risks from the risk register should flow into the materiality assessment, and material risks from the analysis should feed back into risk management.
A classic example is a transition risk from stricter environmental regulations, resulting in higher compliance costs.
3. Opportunities
Opportunities describe the positive potential a company can realize through proactive sustainability measures or through environmental changes. These can include financial benefits and reputational gains. Opportunities can often be derived from the positive impacts a company identifies.
For example, a company that invests early in renewable energy could reduce operating costs, strengthen its market position, and attract customers who value sustainable products and services.
Double materiality and IROs
The identification and evaluation of IROs follows the principle of double materiality. This principle distinguishes between two perspectives:
- Impact materiality (inside-out): How does the company impact the environment and society? This includes both negative and positive effects, such as reducing CO2 emissions through more efficient production.
- Financial materiality (outside-in): How do sustainability issues affect the company's financial performance? For example, climate change could raise insurance premiums or disrupt the supply chain.
By carefully analyzing impacts, risks and opportunities, companies can not only improve their reporting but also develop targeted strategies and drive sustainable development for long-term success.
This Excel template guides you step-by-step through the double materiality assessment and automatically generates your materiality matrix. It handles IRO categorization and scoring so you can focus on the content.
What is the difference between IROs and topics or sub-topics?
ESRS requires companies to systematically assign their IROs to the sustainability topics defined in the standards. These topics include climate change, biodiversity, the company's workforce and corporate governance. The full list of topics and sub-topics can be found in ESRS AR 16.
Each sub-topic can contain several impacts, opportunities and risks. Each IRO must be considered and evaluated separately.
How does an IRO assessment work?
IRO categorization
Each IRO is categorized across five dimensions:
| Dimension | What to determine |
|---|---|
| Materiality type | Is it impact materiality or financial materiality? |
| Direction | Does it have a positive or negative impact, or is it a financial opportunity or risk? |
| Status (impact materiality only) | Is the impact actual or potential? |
| Value chain position | Does it concern own activities, or the upstream or downstream value chain? |
| Time horizon | Short term (under 1 year), medium term (1-5 years), or long term (over 5 years)? |
IRO scoring
Once categorized, each IRO is scored on the following aspects:
- Scale - How severe or significant is the effect?
- Scope - How many people or how large an area does it affect?
- Reversibility - Can the impact be undone?
- Probability - How likely is the impact, risk, or opportunity to occur?
The specific aspects to assess depend on the categorization of the IRO. Our materiality assessment Excel template handles this for you: it shows which aspects to assess for each IRO and automatically calculates the materiality score.
The rationale behind each IRO score should be documented so that it is clear internally and to the auditor during the CSRD audit.
What are examples of IROs?
Impacts, opportunities and risks should be clear, differentiated, comprehensible and assessable. The following examples are taken from the DNK's "IROs" guidelines:
| Type | ESRS topic | Example |
|---|---|---|
| Financial risk | E1 Climate change - climate protection | Extreme weather (heat, heavy rain) forces shortened or changed working hours, disrupting operations. |
| Financial risk | E1 Climate change - adaptation | Stricter regulatory requirements due to climate policy raise compliance costs (transition risk). |
| Potential negative impact | E4 Biodiversity and ecosystems | Raw material extraction and land sealing can weaken or destroy ecosystems. |
| Actual positive impact | E3 Water and marine resources | Using service water and rainwater reduces the draw on fresh water resources. |
Measures established to reduce a negative impact are not themselves positive impacts. Keep these separate in your assessment.
Practical tools for identifying and evaluating IROs
Several tools can make the IRO process more efficient and auditable:
- Materiality Master - Software that specializes in double materiality assessment, guiding users step-by-step through IRO identification and evaluation with AI support.
- Materiality assessment Excel template - A practical template for categorizing and scoring IROs, with automatic materiality score calculation.
- AI prompts for materiality analysis - Helpful prompts to identify impacts, risks and opportunities for your company.
- AI prompt for IRO longlist - An AI prompt that asks targeted questions and generates a comprehensive IRO longlist for your company.
- DNK IRO guidance - The German Sustainability Code provides practical guidance on describing, identifying and formulating IROs.
Frequently asked questions about IROs and materiality assessment
What does IRO stand for in CSRD?
IRO stands for "Impacts, Risks and Opportunities." These three elements form the basis for the double materiality assessment under the European Sustainability Reporting Standards (ESRS). Every CSRD-obligated company must identify, categorize, score, and report on its material IROs.
What is the difference between impact materiality and financial materiality in IROs?
Impact materiality (inside-out) looks at how your company affects the environment and society. Financial materiality (outside-in) looks at how sustainability issues affect your company's financial performance. Both perspectives must be covered in the double materiality assessment. An IRO can be relevant under one or both perspectives.
How do you score an IRO?
Each IRO is scored on scale, scope, reversibility, and probability. The exact combination depends on the IRO type: actual impacts are assessed differently from potential impacts or financial risks. The individual scores are combined into an overall materiality score, which determines whether the topic is material and requires reporting.
What tools are available to help with IRO identification?
The most practical options are specialized software like Materiality Master, our materiality assessment Excel template, and AI prompts tailored to the materiality process. The DNK also provides free IRO guidance documents. Whichever tool you use, make sure it produces documented, auditable results.
