CSRD double materiality assessment – practical

A Kraków-based manufacturing company with 600 employees receives a request from its German parent: complete a double materiality assessment before the next board meeting. The finance team has never heard the term. The sustainability manager has a spreadsheet but no legal framework. The deadline is eight weeks away.

Double materiality assessment is the analytical process required under the Corporate Sustainability Reporting Directive (CSRD) by which a company identifies sustainability topics that are material either because they affect the company's financial performance or because the company's activities impact people and the environment. Polish companies subject to CSRD must complete this assessment before preparing their first sustainability report. Failure to conduct a documented, auditable assessment precludes a company from producing a compliant report and exposes its directors to personal liability under Polish corporate legislation.

This guide walks through the full procedure step by step – from scoping the value chain to presenting findings to the supervisory board. It covers timelines, cost benchmarks, the three most common mistakes, and scenarios for manufacturing, IT, and foreign-investor situations. Each section opens with a direct answer so readers can navigate to what they need.

What is double materiality and who must comply in Poland?

Double materiality has two dimensions. The first – impact materiality – asks whether the company causes significant effects on people or the environment. The second – financial materiality – asks whether sustainability factors create risks or opportunities that affect the company's financial position. Both dimensions must be assessed independently, then combined. A topic can be material on one dimension, both, or neither.

In Poland, CSRD has been transposed through amendments to the ustawa o rachunkowości (Accounting Act) and related legislation. The National Court Register (KRS) records whether a company meets the size thresholds that trigger reporting obligations. Large public-interest entities with more than 500 employees were the first wave, reporting from 2025 on financial year 2024. Large companies exceeding two of three thresholds – 250 employees, EUR 25m balance sheet, EUR 50m net turnover – report from 2026 on financial year 2025. Listed small and medium enterprises follow from 2027.

The Polish Financial Supervision Authority (KNF) oversees compliance for listed entities. The Financial Reporting Council equivalent functions are distributed across the Polish Agency for Enterprise Development (PARP) for SME guidance and statutory auditors accredited under the Polish Chamber of Statutory Auditors (PIBR). Companies must understand which body will review their sustainability statement before choosing their assessment methodology.

One point that confuses many boards: the double materiality assessment is not a one-off exercise. It must be reviewed whenever the company's business model, value chain, or operating context changes materially. Building a repeatable process from the outset saves significant cost in subsequent reporting cycles.

How should a company structure the step-by-step assessment process?

The assessment follows six sequential steps. Each step produces a documented output that feeds the next. Skipping a step does not save time – it creates gaps that auditors will flag, requiring rework that costs more than the original step.

Step 1 – Define scope and value chain. Map all activities from raw-material sourcing through operations to end-of-life. Include upstream suppliers and downstream customers where the company has significant influence. For a Polish manufacturer with suppliers in Asia and customers across the European Union, this mapping typically takes three to four weeks and produces a visual value-chain diagram.

Step 2 – Identify a longlist of sustainability topics. Use the European Sustainability Reporting Standards (ESRS) topic list as the starting point. The longlist covers environment (climate, water, biodiversity, circular economy), social (own workforce, value-chain workers, affected communities, consumers), and governance. Companies should add sector-specific topics from their industry associations.

Step 3 – Stakeholder engagement. Polish corporate legislation does not prescribe a specific engagement format, but ESRS requires that the views of affected stakeholders inform the assessment. Engagement typically takes four to six weeks. Interviews, surveys, and workshop formats are all acceptable. Document the methodology and the responses.

Step 4 – Score impact materiality. For each topic, assess severity (scale, scope, irremediability) and likelihood of negative impacts, and the scale of positive impacts. Use a consistent scoring matrix. The threshold for materiality should be defined before scoring begins – not after, which would introduce bias.

Step 5 – Score financial materiality. Assess the likelihood and magnitude of financial effects from each sustainability topic over short (one year), medium (two to five years), and long (beyond five years) time horizons. Draw on the company's enterprise risk register and connect to existing risk-management processes.

Step 6 – Consolidate and validate. Combine both dimensions into a materiality matrix. Present findings to the supervisory board or audit committee for approval. The approved matrix becomes the basis for selecting which ESRS disclosure requirements apply to the company's sustainability statement.

What are the most common mistakes that invalidate an assessment?

Three mistakes account for the majority of assessments that fail audit scrutiny. Each is avoidable with proper process design, but each is also surprisingly common – even among companies that engaged external consultants.

Mistake 1 – Circular threshold-setting. A company decides which topics it wants to report on, then sets materiality thresholds that produce exactly those results. Auditors trained under ISAE 3000 (the assurance standard applied to sustainability statements) are specifically instructed to test whether thresholds were set before or after scoring. If thresholds were set after, the assessment is invalid. We reversed a regulatory comment on this point for a logistics client in Małopolska (spring 2026), demonstrating through version-controlled documentation that thresholds were locked before any topic was scored.

Mistake 2 – Truncated value chain. Many companies assess only their own operations and ignore upstream suppliers or downstream product use. ESRS explicitly requires the value chain to be included. A Polish food manufacturer that excludes agricultural suppliers from its assessment will have an incomplete picture of water and land-use impacts – topics almost certain to be material for that sector.

Mistake 3 – Absent stakeholder documentation. Conducting stakeholder engagement but failing to document it is equivalent to not conducting it. Auditors require evidence: interview records, survey responses, attendance lists, and a summary of how stakeholder input influenced the final materiality conclusions. Without this evidence, the assessment cannot receive limited assurance – which Polish law will require for all large companies.

A manufacturing client in the Silesia region (autumn 2025) discovered this problem six weeks before its reporting deadline. We reconstructed the engagement documentation from email records and supplementary interviews, enabling the statutory auditor to issue a clean limited-assurance opinion. The episode cost the client approximately PLN 180,000 in additional professional fees – entirely avoidable.

For companies building their compliance programme for German subsidiaries operating in Poland, integrating double materiality into the broader compliance framework from the outset prevents exactly these last-minute crises.

How do timelines and costs differ across business scenarios?

Three scenarios illustrate the practical variation in time and cost. Each involves a different business model and a different set of complications. Understanding the scenario closest to your situation lets you calibrate resources before the project begins.

Scenario A – Polish manufacturer (600 employees, complex supply chain). Total elapsed time: 16 to 20 weeks. Internal resource requirement: 0.5 FTE project manager plus functional input from finance, operations, procurement, and HR. External advisory fees: PLN 120,000 to PLN 220,000 depending on value-chain complexity and whether a specialist data platform is used. The main time driver is supply-chain mapping. Companies that have already conducted ISO 14001 or ISO 26000 assessments can reduce elapsed time by four to six weeks by reusing existing data.

Scenario B – Polish IT services company (300 employees, limited physical supply chain). Total elapsed time: 10 to 14 weeks. External advisory fees: PLN 60,000 to PLN 110,000. The main complexity is own-workforce social topics and data privacy, which intersect with obligations under the General Data Protection Regulation (GDPR). Governance topics – particularly anti-corruption, whistleblower compliance, and AML procedures – tend to score higher for IT companies than for manufacturers, because of client contract requirements.

Scenario C – Foreign investor establishing a Polish subsidiary. Total elapsed time: 12 to 16 weeks, often running in parallel with the parent company's group-level assessment. The subsidiary may be able to use the parent's materiality matrix as a starting point, but Polish-specific regulatory context – including obligations under Polish labour law and sector-specific environmental permits – must be layered in. For UK-headquartered groups, our guide on compliance programme design for UK subsidiaries in Poland addresses the interaction between CSRD and UK sustainability disclosure requirements.

Across all three scenarios, the single largest cost driver is data collection. Companies that invest in a data-governance infrastructure before starting the assessment recover that investment within the first reporting cycle through reduced external advisory time.

One financial consideration that boards often overlook: the double materiality assessment feeds directly into the enterprise risk register. If conducted properly, it can reduce the cost of separate ESG risk assessments and insurance reviews. Companies facing financial stress should also consider whether sustainability-related risks identified in the assessment affect their restructuring options – a point addressed in our analysis of preventive restructuring instruments available in Poland.

To discuss a specific timeline and cost structure for your company's assessment, contact info@kordeckipartners.com. Our team will map your situation against the relevant ESRS requirements and identify where existing compliance infrastructure can reduce duplication.

What should a company prepare before starting the assessment?

Preparation determines whether the assessment runs smoothly or stalls at each step. Companies that arrive at the first project meeting without the following materials typically lose two to four weeks reconstructing information that should have been readily available.

A current legal entity map showing all subsidiaries, branches, and significant joint ventures within the consolidation perimeter
An existing enterprise risk register or equivalent risk documentation, even if not yet integrated with sustainability topics
A value-chain description covering at minimum tier-one suppliers and the primary channels through which products or services reach end users
A list of current sustainability-related commitments – certifications, supplier codes of conduct, environmental permits, and social compliance audits
A stakeholder map identifying key internal and external groups whose interests are affected by the company's activities

Companies that have already implemented an internal whistleblower channel under the Polish Whistleblower Protection Act will find that the channel doubles as a stakeholder input mechanism for the materiality assessment – a useful efficiency that many compliance teams have not yet recognised.

The supervisory board should receive a briefing before the assessment begins, not only at the end. Early board engagement reduces the risk of late-stage objections to materiality conclusions and ensures that the assessment reflects the company's actual strategic priorities rather than a consultant's generic template.

Frequently asked questions

Q: Does a Polish company that is part of a foreign group need to conduct its own double materiality assessment, or can it rely on the group assessment?

A: A Polish subsidiary that is included in a group sustainability report prepared under CSRD may be exempt from preparing a separate report, provided the group report covers the subsidiary and is prepared in accordance with ESRS. However, the group-level assessment must reflect Polish-specific risks and impacts. If the group assessment does not adequately capture local supply-chain conditions, labour-law obligations, or environmental permit requirements, the Polish entity may still need to supplement the group assessment with a local-level analysis. The exemption does not eliminate the need for documentation – it shifts the documentation obligation to the group level.

Q: How long does the double materiality assessment typically take for a mid-sized Polish company, and what does it cost?

A: For a mid-sized Polish company with 250 to 500 employees and a moderately complex supply chain, the assessment typically takes 12 to 18 weeks from project kick-off to board approval. External advisory fees range from PLN 80,000 to PLN 180,000, depending on value-chain complexity, the depth of stakeholder engagement required, and whether the company has existing ESG data infrastructure. Companies that have already completed ISO 14001 certification or conducted prior ESG reporting can often reduce both elapsed time and cost by 20 to 30 percent through data reuse.

Q: Is it a misconception that only environmental topics will be material for most Polish companies?

A: Yes – this is one of the most persistent misconceptions in ESG reporting practice. Social topics, particularly own-workforce conditions and value-chain labour standards, are frequently among the highest-scoring material topics for Polish companies across all sectors. Governance topics – including anti-corruption, AML procedures, and whistleblower compliance – also score highly for companies operating in regulated industries or with significant public-sector contracts. The double materiality framework does not privilege environmental topics; it requires an equal and independent assessment of all ESRS topic areas. Companies that pre-screen their assessment to focus only on environmental topics risk producing an incomplete and non-compliant sustainability statement.

KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to ESG compliance, CSRD implementation, and sustainability reporting. We work with Polish entrepreneurs, foreign investors, and in-house legal teams navigating the full lifecycle of sustainability obligations – from double materiality assessment through to statutory auditor engagement. To discuss your situation, contact info@kordeckipartners.com.