What Is the CSRD? EU Sustainability Reporting Requirement for Companies

The climate crisis, social inequality, and corporate transparency are now at the center of business life. Across the world, investors, consumers, and public authorities expect companies to be accountable not only financially, but also in environmental, social, and governance (ESG) areas.

To support this transformation, the European Union introduced a new regulation: the Corporate Sustainability Reporting Directive (CSRD). The CSRD aims to standardize how companies measure, manage, and report their sustainability performance. As a result, companies should provide sustainability information that is transparent, comparable, and reliable.

In this post, we explain the CSRD—what it is, why sustainability reporting has become a priority, and what companies should do to prepare.

CSRD at a Glance: What Does It Require?

CSRD is designed to ensure that sustainability reporting becomes:

more consistent: reporting requirements are standardized
more comprehensive: companies report a broader range of sustainability topics
more usable: the information becomes comparable across companies
more credible: reporting must be verifiable and subject to assurance

Rather than treating sustainability reporting as a “separate activity,” CSRD integrates it into corporate governance and reporting processes.

Why CSRD Matters for Companies

CSRD is important because it affects:

access to capital and investor relations
customer trust and market competitiveness
regulatory compliance and risk management
supply chain relationships and data requests

Even if your company is not directly within the initial CSRD scope, you may still be impacted indirectly if you supply products or services to companies that must report under CSRD.

Scope and Reporting Timeline

CSRD extends sustainability reporting to more companies over time. The timeline depends on company type and reporting requirements. In general, the directive rolls out in phases and gradually increases coverage—eventually reaching a large number of organizations across the EU market.

Because the requirements build over time, preparation should start early: you need time to collect data, build internal processes, and establish governance for reporting quality.

Which Standards Are Used? ESRS

CSRD reporting relies on ESRS (European Sustainability Reporting Standards). ESRS defines what companies must report and how they should structure the information.

ESRS also supports “double materiality,” meaning companies consider not only how sustainability issues affect the business, but also how the business affects people and the environment.

What Should Companies Do to Prepare?

To be ready for CSRD, companies typically need to:

Assess material topics (environmental and social impacts and business risks)
Build data collection processes across functions and supply chain partners
Establish governance for reporting (ownership, controls, audit trails)
Define targets and action plans for improvements
Develop assurance-ready documentation so that reporting can be verified

In practice, preparation often requires a combination of strategy, operations, and technology—especially for data-heavy areas like emissions accounting.

Summary

CSRD is a major step toward standardized and credible sustainability reporting in the EU. For companies, it is not just a compliance requirement—it is an opportunity to strengthen governance, improve transparency, and manage ESG risks with better data.

If you want support with CSRD readiness—including emissions accounting, documentation, and ESRS-aligned reporting—get in touch with us at 3pmetrics.