What is CSRD? Complete Guide for European Businesses

The Corporate Sustainability Reporting Directive (CSRD) represents one of the most significant shifts in corporate sustainability regulation globally. If your European business operates above certain size thresholds, CSRD compliance is no longer optional - it's a legal requirement. This comprehensive guide explains what CSRD is, who must comply, what you need to report, and how to prepare.

What is the CSRD and why does it matter?

Understanding the Corporate Sustainability Reporting Directive

The CSRD is an EU directive that mandates large European companies to disclose detailed information about their sustainability performance, environmental impact, and governance practices. Adopted in December 2022, it replaces and significantly expands the scope of the Non-Financial Reporting Directive (NFRD), which previously applied to a narrower set of organizations.

Unlike its predecessor, the CSRD introduces a mandatory, standardized approach to sustainability reporting. Companies must report using the European Sustainability Reporting Standards (ESRS) - a unified framework that ensures comparability and transparency across the EU.

Why CSRD matters for your business

Regulatory compliance is only part of the story. CSRD compliance demonstrates your commitment to sustainability stakeholders, improves access to capital, and positions your organization ahead of competitors. Financial institutions increasingly use CSRD data to assess lending risk and investment opportunities.

The directive also creates accountability. Non-compliance can result in significant penalties, public reputation damage, and exclusion from tenders or government contracts.

CSRD Timeline and Compliance Deadlines

Understanding the phased implementation

CSRD has a staggered implementation schedule that affects different company categories across different years:

Large Public Interest Entities (PIEs) - 2024 onwards:

• Companies already subject to NFRD must report on fiscal year 2024 starting in 2025
• This includes large listed companies and large financial institutions

Large Companies - 2025 onwards:

• Large non-listed companies (250+ employees, EUR 50M+ turnover, or EUR 25M+ assets) report on fiscal year 2025 starting in 2026

Listed SMEs and unlisted companies - 2026 onwards:

• Listed small and medium-sized enterprises can comply from 2026 (reporting on 2025)
• A temporary exemption exists until 2028 for certain listed SMEs

For detailed information on these timelines and how they apply to your organization, see our guide to the CSRD Timeline.

Assurance requirements

The directive mandates independent assurance of reported data. In the first years, this begins at limited assurance. Progression to reasonable assurance (higher quality verification) occurs in subsequent years, typically 2028 onwards depending on company size.

What Must You Report Under CSRD?

The European Sustainability Reporting Standards (ESRS)

The CSRD requires reporting using ESRS standards - a comprehensive framework covering environmental, social, and governance (ESG) topics. Understanding these standards is critical for building your compliance roadmap.

Environmental Standards (E):

• E1: Climate Change - Greenhouse gas emissions (Scope 1, 2, and 3), climate transition plans, and climate scenario analysis
• E2: Pollution - Air, water, and soil pollution impacts
• E3: Water and Marine Resources - Water consumption and marine ecosystem impacts
• E4: Biodiversity and Ecosystems - Land use and biodiversity protection measures
• E5: Resource Use and Circular Economy - Waste management and circular economy transition

Social Standards (S):

• S1: Own Workforce - Employment practices, diversity, training, health and safety, and remuneration
• S2: Workers in the Value Chain - Labor practices of suppliers and contractors
• S3: Affected Communities - Community impacts and stakeholder engagement
• S4: Consumers and End-Users - Data privacy, product safety, and consumer rights

Governance Standards (G):

• G1: Business Conduct - Anti-corruption, tax governance, and ethical business practices
• G2: Board Diversity - Gender, age, and background diversity in governance structures

The concept of double materiality

CSRD introduces "double materiality" - a dual assessment framework that sets it apart from traditional ESG reporting.

• Financial materiality: Which sustainability issues could impact your business financially
• Impact materiality: Which issues your business impacts materially on people and the environment

You must assess both dimensions and report on issues that are material under either lens. This ensures comprehensive coverage of your true sustainability footprint, not just business-relevant issues.

Who Must Comply with CSRD?

Company size thresholds

CSRD applies to:

• Large PIEs (already covered by NFRD): Large listed companies and large financial institutions
• Large non-listed companies: Organizations exceeding at least two of three criteria:
  • 250+ employees
  • EUR 50 million net turnover
  • EUR 25 million total assets
• Listed SMEs: Small and medium enterprises listed on regulated EU markets (with temporary exemptions available)

Non-EU companies with EU operations

A critical expansion: non-EU companies with significant EU turnover (EUR 150+ million) must also comply if they have a subsidiary or branch subject to CSRD. This extends the directive's reach globally.

How Greenio Helps European Businesses Meet CSRD Requirements

Streamlined carbon and sustainability accounting

Greenio's platform automates the complex process of collecting, calculating, and reporting sustainability data across the ESRS framework. Rather than managing spreadsheets and manual data validation, our system consolidates your environmental and social metrics in a centralized, auditable location.

Our platform supports the full scope of CSRD reporting requirements, including:

• Accurate Scope 1, 2, and 3 greenhouse gas emissions calculation
• Double materiality assessment workflows
• ESRS standard mapping and data organization
• Assurance-ready documentation and audit trails
• Multi-country compliance (supporting GHG Protocol in India, CCTS in Canada, SECR in the UK, and beyond)

Country-specific guidance and support

Different European countries have nuanced implementation approaches. Greenio provides localized guidance for your specific market:

• Carbon accounting in Germany - navigating German sustainability expectations
• Carbon accounting in France - understanding France's stringent climate requirements
• Carbon accounting in Italy - aligning with Italian ESG standards

This ensures your reporting reflects both EU-wide CSRD requirements and country-specific best practices.

CSRD FAQs

What is the difference between NFRD and CSRD?

The NFRD (Non-Financial Reporting Directive) applied to approximately 11,700 EU companies and required disclosure of non-financial information. The CSRD dramatically expands this scope to around 50,000 companies and introduces mandatory standardized reporting using ESRS. CSRD also introduces double materiality, independent assurance requirements, and digital reporting formats.

How do I assess materiality for CSRD compliance?

Double materiality assessment involves two steps: (1) identify all sustainability issues relevant to your industry and business model, (2) evaluate financial materiality (could this impact our business?) and impact materiality (do we have significant impact on this issue?). Document this through stakeholder engagement, peer benchmarking, and senior management review. Issues material under either lens require reporting.

Is CSRD mandatory for SMEs?

CSRD is mandatory for listed SMEs (small and medium enterprises on EU regulated markets) from 2026, though exemptions apply until 2028 for certain categories. Unlisted SMEs are not directly subject to CSRD. However, if an unlisted SME is owned by a large parent company subject to CSRD, the parent may need to consolidate the subsidiary's data in group-level reporting.

When should we start preparing for CSRD?

Immediately. Even if your first reporting deadline is 2026 or later, you should begin now. Early preparation allows time for data system improvements, staff training, assurance provider selection, and policy development. Companies reporting in 2025 (fiscal year 2024) are already in active compliance mode. Starting early positions you to meet deadlines confidently and identify opportunities for continuous improvement.

What happens if we don't comply with CSRD?

Non-compliance can result in significant penalties, legal liability, reputational damage, and exclusion from government tenders and contracts. Additionally, financial institutions may view non-compliance as a governance risk affecting lending decisions. Compliance is not optional - it's a legal obligation with material business consequences.

Conclusion

The CSRD represents a fundamental transformation in how European businesses measure, manage, and report sustainability performance. With phased implementation beginning in 2024 and extending through 2026, compliance timelines are already in motion.

Success requires more than checking a compliance box. It demands robust data systems, skilled teams, and ongoing commitment to accuracy and transparency. Whether you're a large PIE reporting in 2025 or a listed SME preparing for 2026, now is the time to invest in your CSRD infrastructure.

Greenio simplifies this journey by automating data collection, standardizing calculations, and ensuring your reporting meets ESRS requirements across the EU. Start your CSRD compliance assessment today and build the sustainability foundation your stakeholders expect.