CSRD Reporting Obligation 2025: CFO Guide & Steps

08.10.2025

5 min read

TL;DR

Starting in January 2025, large capital-market-oriented companies must comply with the EU’s Corporate Sustainability Reporting Directive (CSRD); all large limited liability companies follow in 2026.
The European Sustainability Reporting Standards (ESRS) comprise over 1,100 data points – a scale that is unmanageable without digitalisation.
The double materiality assessment lies at the heart of the CSRD: companies must evaluate both their impacts on the environment and the financial risks arising from sustainability issues.
CFOs must treat ESG data with the same rigour as financial data – including external audit.
Treating the CSRD as a mere compliance exercise means missing a strategic opportunity: access to cheaper financing and stronger stakeholder relationships.

The CSRD is the most comprehensive sustainability reporting framework ever introduced in Europe. For CFOs, it signals a fundamental shift: ESG data are now an integral part of the management report – audited, standardised, and comparable.

This is no longer greenwashing. The CSRD compels companies to measure and report their sustainability performance with the same discipline they apply to financial performance. For CFOs who have not yet prepared, time is running short.

Who is affected – and when

The Corporate Sustainability Reporting Directive (CSRD) is being rolled out in phases. Starting with the 2024 financial year, large capital-market-oriented companies with more than 500 employees must publish sustainability reports. From 2025, all large limited liability companies fall under the directive – defined as meeting at least two of the following three criteria: more than 250 employees, annual turnover exceeding €50 million, or total assets exceeding €25 million. From 2026, listed SMEs are also included.

In Germany, this affects an estimated 15,000 companies – roughly ten times as many as under the previous EU CSR Directive. Indirect impact is even broader: suppliers and service providers to CSRD-reporting companies are effectively drawn in through supply-chain due diligence requirements.

The 1,100-Data-Point Challenge

The European Sustainability Reporting Standards (ESRS) define twelve standards across three categories: environmental (E1-E5), social (S1-S4), and governance (G1). Together, these yield over 1,100 potential data points.

Not all must be reported – the double materiality assessment filters which standards are relevant. Yet even after filtering, typical industrial companies report on 400 to 600 data points. That volume of data collection simply cannot be managed using Excel spreadsheets and manual processes.

The consequence: CFOs need an ESG data infrastructure that captures, validates, and aggregates sustainability data as systematically as their ERP systems handle financial data. This is an IT investment that must be made now – not when the first reporting cycle begins.

Double Materiality: Understanding the Core Concept

The double materiality assessment is the methodological foundation of the CSRD – and its most significant conceptual challenge.

Impact Materiality: What effects does the company have on the environment and society? This includes emissions, water consumption, working conditions in the supply chain, and biodiversity impacts.

Financial Materiality: Which sustainability-related risks and opportunities affect the company’s financial performance? These include physical climate-related risks, regulatory compliance costs, reputational risks, and market opportunities arising from sustainable products.

A topic must be reported if it is material under at least one of these two perspectives. In practice, this means most companies must report on climate change (E1), their own workforce (S1), and corporate governance (G1) – regardless of sector.

From Compliance to Strategic Opportunity

Most CFOs view the CSRD (Corporate Sustainability Reporting Directive) as a regulatory burden. That’s understandable – but short-sighted. Companies that strategically leverage their CSRD data gain advantages on three levels:

Financing: The EU Taxonomy links sustainable activities to more favourable financing terms. Banks and investors are increasingly using CSRD data in credit decisions. Strong ESG performance lowers cost of capital – measurably.

Value chain: Companies that master their own sustainability data become preferred partners for large enterprises subject to CSRD reporting obligations. This delivers a tangible competitive edge in B2B business.

Risk management: The CSRD mandates a systematic analysis of risks that remain invisible in traditional financial reports. Climate-related risks, supply chain dependencies, and social risks become quantifiable – and thus manageable.

Frequently Asked Questions

Does my company need to publish a CSRD report?

Yes – if your company meets at least two of the following three criteria: more than 250 employees, annual revenue exceeding €50 million, or total assets exceeding €25 million – starting with the financial year 2025. Listed SMEs must comply from 2026 onward. Even companies not directly subject to the EU’s Corporate Sustainability Reporting Directive (CSRD) should prepare proactively, as customers and banks increasingly demand ESG data.

What does CSRD implementation cost?

For mid-sized companies, typical first-year costs range from €150,000 to €500,000 – including software, consulting services, and internal resource allocation. From year two onward, expenses decline to ongoing operational levels. Costs vary significantly depending on supply chain complexity and the maturity of existing data infrastructure.

Who audits the CSRD report?

The CSRD report forms part of the management report and is audited by the statutory auditor. Initially, “limited assurance” applies; “reasonable assurance” is expected in the medium term. The Big Four accounting firms – and specialized audit providers – are rapidly scaling up their ESG assurance capabilities.

Can we conduct the double materiality assessment ourselves?

In principle, yes – but the methodology is complex and documentation requirements are stringent. Most companies engage external experts for the initial assessment and gradually build internal expertise for subsequent years. The European Financial Reporting Advisory Group (EFRAG) has published detailed guidance documents.

What happens if a company breaches CSRD requirements?

Enforcement and penalties are implemented at national level. In Germany, violations may trigger administrative fines, penalty payments, or – in extreme cases – entries in the Transparency Register. Equally consequential are indirect repercussions: banks may tighten credit terms, and major customers may exclude non-compliant suppliers from tender processes.

Image source: Unsplash / Markus Spiske