The Corporate Sustainability Reporting Directive (CSRD) represents the most significant overhaul of sustainability reporting in European history. As the second wave of compliance deadlines approaches, thousands of companies are scrambling to understand what is required of them, and how to get there. This guide covers everything you need to know.
What Is CSRD?
The CSRD is a European Union directive that mandates detailed sustainability reporting for a broad range of companies operating within the EU. It replaces the earlier Non-Financial Reporting Directive (NFRD) and dramatically expands both the scope of companies covered and the depth of disclosure required.
At its core, the CSRD requires companies to report on environmental, social, and governance (ESG) matters using the European Sustainability Reporting Standards (ESRS). These reports must be included in the company's management report and are subject to independent assurance, bringing sustainability disclosures closer to the rigour expected of financial reporting.
CSRD is not just a reporting exercise. It is a fundamental shift in how companies measure, manage, and communicate their impact on people and planet.
Who Needs to Comply?
The CSRD applies in phases, and each wave brings a new cohort of companies into scope:
- January 2024 (reporting in 2025): Companies already subject to the NFRD, typically large public-interest entities with more than 500 employees.
- January 2025 (reporting in 2026): All other large companies meeting at least two of three criteria: more than 250 employees, more than EUR 50 million in net turnover, or more than EUR 25 million in total assets.
- January 2026 (reporting in 2027): Listed SMEs, small and non-complex credit institutions, and captive insurance undertakings. These entities have the option to defer for two additional years.
- January 2028 (reporting in 2029): Non-EU companies with significant EU operations generating more than EUR 150 million in the EU, with at least one subsidiary or branch in the EU.
If your organisation falls into any of these categories, you are either already required to report or will be soon. Even if you are not yet in scope, investor pressure and supply chain requirements from larger customers may make early adoption a strategic advantage.
Understanding the ESRS Standards
The European Sustainability Reporting Standards form the backbone of CSRD reporting. The first set of standards, adopted in July 2023, includes 12 standards divided into three categories:
Cross-cutting standards
- ESRS 1 (General Requirements): Defines the architecture and principles of sustainability reporting, including the concept of double materiality.
- ESRS 2 (General Disclosures): Mandates core disclosures that apply to all companies regardless of materiality assessment outcomes.
Environmental standards
- ESRS E1 (Climate Change): Covers greenhouse gas emissions across Scope 1, 2, and 3, as well as transition plans and climate targets.
- ESRS E2 (Pollution): Addresses air, water, and soil pollution.
- ESRS E3 (Water and Marine Resources): Covers water consumption and marine ecosystem impacts.
- ESRS E4 (Biodiversity and Ecosystems): Focuses on impacts and dependencies on biodiversity.
- ESRS E5 (Resource Use and Circular Economy): Addresses material flows and waste management.
Social and governance standards
- ESRS S1-S4: Cover own workforce, workers in the value chain, affected communities, and consumers/end-users respectively.
- ESRS G1 (Business Conduct): Addresses corporate culture, anti-corruption, and lobbying activities.
For most organisations focused on carbon accounting, ESRS E1 (Climate Change) will be the primary standard requiring detailed emissions data. However, the cross-cutting requirements of ESRS 1 and ESRS 2 are mandatory for all reporting entities.
Key Deadlines for 2026
If you are in the second wave of CSRD compliance, the timeline is tight:
- Now: Complete your double materiality assessment and identify which ESRS topics are material to your organisation.
- Q1 2026: Finalise data collection processes for the 2025 reporting year. Ensure Scope 1, 2, and 3 emissions data is complete and auditable.
- Q2 2026: Begin drafting your sustainability statement according to ESRS requirements.
- Q3 2026: Engage your limited assurance provider for review. Address any data gaps or quality issues.
- Q4 2026: Publish your sustainability report as part of your annual management report in the European Single Electronic Format (XHTML with iXBRL tags).
Double Materiality: The Foundation
One of the most distinctive features of CSRD is the concept of double materiality. Unlike traditional financial materiality, which asks "what ESG issues affect the company's value?", double materiality also asks the reverse: "what impact does the company have on the environment and society?"
A robust double materiality assessment typically involves:
- Mapping your value chain to identify potential impacts and dependencies.
- Engaging stakeholders, including employees, suppliers, customers, and communities.
- Assessing both the financial risks and opportunities related to sustainability topics and the company's actual impacts on people and planet.
- Documenting your methodology and conclusions to support assurance processes.
The outcome determines which ESRS topics require full disclosure. While ESRS 2 (General Disclosures) is always mandatory, the topical standards (E1 through G1) only require reporting on matters that are deemed material through this assessment.
How to Prepare: A Practical Roadmap
Compliance with CSRD is not something that can be achieved overnight. Here is a practical framework for getting your organisation ready:
1. Assemble your team
CSRD compliance requires collaboration across sustainability, finance, legal, operations, and IT. Appoint a project lead and establish a cross-functional steering committee with clear accountability.
2. Conduct a gap analysis
Map your current reporting capabilities against ESRS requirements. Identify where you already have data, where gaps exist, and where processes need to be created or strengthened.
3. Invest in data infrastructure
CSRD demands granular, auditable data. Manual spreadsheets will not survive assurance scrutiny. A dedicated carbon accounting platform can automate data collection, ensure consistency, and maintain the audit trail that assurers require.
4. Tackle Scope 3 early
Scope 3 emissions are typically the largest and most complex part of a company's carbon footprint. Start supplier engagement and data collection processes now, as building the necessary supplier relationships takes time.
5. Engage assurance early
Do not wait until your report is complete to engage with your assurance provider. Early dialogue helps identify potential issues and gives you time to address them. The first year requires limited assurance; reasonable assurance will follow in subsequent years.
The organisations that treat CSRD as a strategic opportunity rather than a compliance burden will be the ones that gain competitive advantage from the process.
How Noissime Can Help
Noissime's Carbon Intelligence Platform is designed to make CSRD compliance systematic and efficient. With built-in ESRS E1 alignment, automated Scope 1, 2, and 3 tracking, supplier data collection automation, and audit-ready reporting, Noissime takes the complexity out of compliance.
Our compliance dashboard tracks your progress against each framework requirement in real time, highlighting gaps and surfacing the next best actions to move towards full compliance. Combined with AI-powered document intelligence and natural language data input, Noissime reduces the manual burden of carbon accounting by up to 80%.
Whether you are in the first wave of reporting or preparing for future compliance, building strong data foundations now will pay dividends for years to come.