CSRD Compliance Made Easy: How to Prepare Your Business for Reporting

Key Takeaways

• Over 50,000 companies affected, including around 10,000 non-EU firms
  
• Requires reporting on both how ESG impacts the business and how the business impacts ESG
  
• Scope 3 emissions reporting is mandatory across the value chain
  
• ESG data must be verified by independent third-party auditors
  
• All reports must be submitted in a machine-readable iXBRL format
  
• Proposed delays push large company reports to 2028 and SME reports to 2029
  

The Corporate Sustainability Reporting Directive (CSRD) aims to drastically improve transparency, accountability, and trust in corporate sustainability practices. The CSRD requires companies to integrate detailed, externally verified sustainability disclosures with their financial reports. But the road to compliance is complex, and navigating it can seem overwhelming.

Does your company report under the NFRD (Non-Financial Reporting Directive) or are you new to sustainability reporting? Either way, this guide will equip you with the knowledge you need to succeed.

What is the CSRD?

The CSRD is an EU regulation that significantly broadens and strengthens corporate sustainability reporting. The directive mandates companies to report on Environmental, Social, and Governance (ESG) issues. On top of that, it requires this data to be externally verified. The overarching goal of the CSRD is to create a unified picture of how companies are impacting and being impacted by ESG factors.

The CSRD replaces the Non-Financial Reporting Directive (NFRD), but it goes much further by:

• Expanding the scope of companies required to report
• Introducing double materiality reporting (how a company affects and is affected by ESG factors),
• Mandating audits of sustainability data, and
• Requiring companies to present information in digital, machine-readable formats for better accessibility and transparency.
  

Who is Mandated by the CSRD?

The CSRD impacts thousands of companies, both within the EU and outside. While EU-listed companies are automatically in scope, the regulation extends to non-EU companies if they have significant operations in the EU. Companies must meet two out of three of the following criteria:

• 250+ employees
• €50 million+ in turnover
• €25 million+ in assets
  

In addition, the CSRD compliance checklist applies to EU parent companies of large groups, large non-EU companies listed on an EU market, and SMEs (Small and Medium Enterprises) listed on EU markets, which will be phased in by 2029.

For companies meeting these thresholds, compliance is mandatory, and failing to comply could lead to significant penalties, including fines or even legal actions in some jurisdictions.

CSRD Compliance Requirements: What You Need to Know

The CSRD’s requirements are more detailed than previous reporting directives. Here are the core elements your business needs to focus on:

1. Double Materiality: Understanding What to Disclose

One of the most important aspects of the CSRD is double materiality. Companies are required to disclose:

• How they impact society and the environment (outside-in),
• How environmental and social issues affect the business (inside-out).
  

This ensures that your sustainability disclosures cover the full range of ESG impacts, both on the company and on the world around it. For example, a company must report not just on its carbon emissions but also on the risks posed by climate change, such as supply chain disruptions or changing regulations.

To meet this requirement:

• Conduct a double materiality assessment to evaluate which ESG issues are most relevant to your operations and strategy.
• Use frameworks like GRI (Global Reporting Initiative) or TCFD (Task Force on Climate-related Financial Disclosures) to guide this assessment.
  

2. Retrospective and Forward-Looking Reporting

Under the CSRD, companies must provide both retrospective and forward-looking disclosures:

• Retrospective disclosures involve providing quantitative data on your company’s ESG impact, such as energy use, waste reduction, emissions reductions, and diversity efforts over the past year(s).
• Forward-looking disclosures involve setting targets for improvement in these areas. This can include setting emission reduction goals, outlining strategies for managing climate risk, and explaining how your business will adapt to the changing regulatory and environmental landscape.
  

This requires you to:

• Measure current ESG impacts and set targets for future performance.
• Clearly explain how your sustainability strategy aligns with these goals and the broader business strategy.
  

3. Climate-Related Disclosures

The CSRD has strict requirements for climate-related disclosures, particularly in relation to Scope 3 emissions. These are emissions that occur outside your direct operations, across the entire value chain, such as:

• Emissions from suppliers,
• Emissions from the transportation of goods,
• Emissions from the use of products sold.
  

Tracking Scope 3 emissions can be challenging, as it involves data from third parties- suppliers, distributors, and other partners. 

To comply:

• Work closely with your supply chain partners to gather relevant data on indirect emissions.
• Implement software tools to track and report emissions from all stages of your value chain.
  

4. External Assurance and Digital Tagging

For the first time, the CSRD requires all sustainability disclosures to undergo external assurance. This means that the information you report on environmental, social, and governance (ESG) performance must be verified by an independent third party, typically an external auditor or specialized sustainability consultant.

Who Are the External Auditors?

The external auditors who conduct the assurance process must be qualified professionals with experience in sustainability CSRD reporting and ESG audits. These auditors will review the sustainability data that you have collected to ensure that it is:

• Accurate: The data must reflect your actual sustainability performance, without errors or omissions.
  
• Complete: The data must cover all the necessary topics as required by the CSRD, including Scope 3 emissions, energy usage, workforce diversity, and other relevant ESG metrics.
  
• Reliable: The data must be sourced, calculated, and reported in a way that can withstand scrutiny and be verified by an independent party.
  

When Should You Engage External Auditors?

It is recommended to engage external auditors early in your reporting cycle, ideally during the data collection and preparation phases. This early engagement allows auditors to provide feedback on the data collection process, identify any potential issues, and help you correct them before the final audit. Bringing auditors into the process early also helps ensure that any gaps in data are addressed before they become larger issues.

The external audit process will culminate in an official CSRD report that verifies whether your company’s sustainability disclosures are in compliance with the CSRD. This assurance report will be part of the publicly disclosed sustainability report and will be critical for demonstrating your company’s transparency and commitment to meeting CSRD standards.

Digital Tagging: Making Data Accessible and Machine-Readable

Alongside external assurance, the CSRD mandates digital tagging for all sustainability disclosures. The aim of this requirement is to ensure that the data presented is machine-readable, meaning it can be easily accessed and analyzed by regulators, investors, and other stakeholders.

What Is Digital Tagging?

Digital tagging involves embedding structured data tags within your sustainability reports, making the information readable by both humans and machines. These tags are typically based on standardized taxonomies, such as XBRL (eXtensible Business Reporting Language), which is widely used for financial and non-financial reporting.

Why Is Digital Tagging Important?

1. Data Accessibility: Digital tagging ensures that stakeholders can easily access and analyze your sustainability data. It makes the data more transparent and helps investors, regulators, and analysts quickly extract insights.
   
2. Consistency: The use of a standardized taxonomy (such as iXBRL) ensures consistency across reports, making it easier to compare sustainability performance across companies and sectors.
   
3. Automation and Efficiency: By presenting data in a machine-readable format, digital tagging simplifies the process of data extraction, reducing manual effort and minimizing errors.
   

How to Implement Digital Tagging?

To comply with the CSRD’s digital tagging requirement, your company will need to:

• Select an appropriate taxonomy: The CSRD requires the use of iXBRL (Inline XBRL) format for digital tagging. This format combines human-readable HTML with machine-readable XBRL tags, allowing data to be accessed by both people and systems.

• Tag data consistently: Ensure that all relevant sustainability metrics (like Scope 3 emissions, water usage, waste management, and social impact) are tagged according to taxonomic standards. This may involve mapping your internal data to the ESRS (European Sustainability Reporting Standards) taxonomy.

• Validate the tagged data: To ensure compliance, it’s important to validate the tagged data against the iXBRL specifications, ensuring that the formatting, tagging, and categorization meet CSRD standards.
  

The Challenges of CSRD Disclosure

1. Data Collection and Accuracy

The CSRD requires a vast amount of data from various teams, all of which must be accurate and verifiable. One of the biggest challenges is gathering reliable data on Scope 3 emissions, which are often the most difficult to track because they depend on third parties.

• Companies must set up systems to collect accurate ESG data from across their operations and value chain, which can be resource-intensive.
• Implement systems that can manage, monitor, and report this data consistently.
  

2. Interdepartmental Collaboration

CSRD compliance requires close collaboration between departments, particularly finance and sustainability teams. These teams will need to share data, ensure consistency in categorizing information, and collaborate on drafting reports that align with CSRD requirements.

• Finance and sustainability teams will need to integrate their data and insights more seamlessly. This means breaking down silos and improving communication and collaboration.
  

3. Ensuring External Assurance and Audit Compliance

All sustainability data must be externally audited, which means companies need to set up comprehensive data validation and assurance processes. This includes working with auditors early in the process to ensure that your data collection methods and reporting are aligned with CSRD standards.

4. Digital Reporting and Tagging

The CSRD mandates digital reporting and machine-readable formats. Companies need to adopt reporting software that supports digital tagging of sustainability data to ensure compliance. This can require a significant investment in technology and systems.

CSRD Compliance Timeline

In February 2025, the European Commission introduced the “Omnibus Simplification Package,” which includes the “Stop-the-Clock” Directive. This package proposes to delay the application of certain CSRD reporting requirements.

• Wave 2 (Large companies): Reporting would start in 2028 instead of 2026.
• Wave 3 (Listed SMEs): Reporting would start in 2029 instead of 2027.
  

These changes aim to reduce the regulatory burden on businesses and provide more time for compliance. However, these proposals must be adopted by the European Parliament and the Council before they become law.

Sustainability Reporting with Centraleyes

With Centraleyes, you can easily align your ESG reporting with broader international standards, conduct materiality assessments, and track progress toward sustainability goals. Whether you’re reporting on Scope 3 emissions, supply chain risks, or climate-related disclosures, Centraleyes helps you organize, verify, and monitor data efficiently, ensuring that your sustainability disclosures are accurate, traceable, and ready for external audits.

CSRD compliance is more than a regulatory hurdle- it’s an opportunity to enhance transparency, build trust with investors, and demonstrate your commitment to sustainable practices. With Centraleyes as your partner, you can streamline your ESG reporting, foster collaboration between teams, and confidently meet the challenges of the CSRD while focusing on what matters most: driving long-term value for your organization.

FAQs

1. Does CSRD apply to non-EU companies with no legal entity in the EU?

Yes. If a non-EU company generates over €150 million in annual turnover in the EU and has at least one branch or subsidiary in the EU, it will be required to publish a CSRD-aligned sustainability report at the group level- even if the parent company is outside the EU.

2. What’s the difference between ESRS and CSRD?

CSRD is the regulation. ESRS (European Sustainability Reporting Standards) are the detailed rules that companies must follow to comply with CSRD. Think of CSRD as the law and ESRS as the rulebook.

3. What happens if my company is already reporting under GRI, SASB, or TCFD?

These frameworks can help, but they won’t make you fully compliant. You’ll still need to map your disclosures to the ESRS, which includes EU-specific requirements not covered in global frameworks.

4. What level of assurance is required: limited or reasonable?

Initially, CSRD only requires limited assurance (review-level). However, the EU plans to phase in reasonable assurance (audit-level) in later years, which will demand higher scrutiny and stronger data governance.

5. Is outsourcing CSRD reporting allowed?

Yes, companies can outsource aspects of the reporting process (like data gathering or digital tagging), but the responsibility for compliance remains with the company’s governing body.

6. What are the language requirements for CSRD reports?

Reports must be published in the official language of the EU member state where the company is headquartered. Some countries may require an additional English version for cross-border access.

7. How often must companies update their materiality assessments?

While CSRD doesn’t prescribe an exact frequency, best practice suggests revisiting your materiality assessment annually- or whenever there are significant shifts in business model, geography, or stakeholder pressure.

8. How should companies disclose data limitations or gaps?

CSRD allows for transparent disclosures of data limitations, estimates, or unavailable figures, provided they are clearly justified, and plans for closing those gaps should be included.

9. Will CSRD increase liability risks for directors and boards?

Yes. Board members must sign off on CSRD disclosures; inaccuracies or omissions could result in legal or regulatory consequences, depending on national enforcement.