CSRD vs CSDDD reporting vs due diligence

CSRD scope is built through the Accounting Directive categories amended by CSRD, including large undertakings, parent undertakings of large groups, listed SMEs other than micro-undertakings, and certain third-country undertakings. Exact application depends on company type, group status, listing status, exemptions, and national implementation.

CSDDD Article 2 uses its own thresholds. The core EU-company threshold is more than 1,000 employees and more than EUR 450 million net worldwide turnover; it also has group, third-country, and franchising or licensing tests.

Run two scope memos. A company can be in CSRD but outside CSDDD, in CSDDD but using CSRD reporting to satisfy part of CSDDD communication, or in both with different legal triggers.

CSRD is about public sustainability reporting. It amends the Accounting Directive so covered undertakings report sustainability information needed to understand their impacts and how sustainability matters affect them.

CSDDD is about company conduct. It requires in-scope companies to run risk-based human rights and environmental due diligence across their own operations, subsidiaries, and chains of activities.

Do not treat a CSRD disclosure as proof that CSDDD due diligence has been performed. A report can describe due diligence, but CSDDD asks whether the underlying due diligence actions happened.

CSRD work is a reporting workstream: double materiality assessment, ESRS disclosure mapping, value chain information, policies, actions, metrics, targets, narrative controls, management-report integration, assurance preparation, and digital tagging readiness.

CSDDD work is a due diligence workstream: integrate due diligence into policies and risk management, identify and assess adverse impacts, prioritise where needed, prevent or mitigate potential impacts, end or minimise actual impacts, remediate, engage stakeholders, maintain complaints and notification channels, monitor, and communicate.

The same sustainability team may support both regimes, but the deliverables differ: CSRD produces an assured sustainability statement; CSDDD produces operating controls and evidence that adverse impacts were addressed.

CSRD uses double materiality under ESRS: impact materiality and financial materiality are considered in their own right, and material impacts, risks, and opportunities drive what is disclosed.

CSDDD uses adverse-impact due diligence: companies assess actual and potential adverse human rights and environmental impacts and, where not all impacts can be addressed at once, prioritise by severity and likelihood.

A CSRD double materiality assessment can inform CSDDD risk identification, but it should not replace the CSDDD adverse-impact analysis, prioritisation, prevention, corrective action, remediation, and monitoring records.

CSRD evidence should support reported ESRS disclosures: materiality method and approvals, data-point inventory, source systems, estimates and value chain limitations, policies and actions, metrics and targets, consolidation decisions, management-report text, assurance requests, and digital-tagging decisions.

CSDDD evidence should support conduct: due diligence policy, adverse-impact assessments, prioritisation rationale, prevention and corrective action plans, contractual assurances and verification, SME support, stakeholder engagement, complaints handling, remediation, monitoring results, annual statements, and climate transition-plan implementation.

Reuse underlying supplier or impact evidence only when the fact, perimeter, owner, time period, and source requirement match. Otherwise keep the CSRD reporting file and CSDDD due diligence file separate.

CSRD timing depends on company category and later amendments. The grounding includes Commission material describing application dates and a 2025 simplification proposal, so teams should confirm the current national implementation before fixing a reporting date.

CSDDD timing also depends on Article 37 and later amendment activity. The grounding includes a Commission proposal to postpone the transposition deadline and first application wave, so do not rely on old CSDDD dates without checking the enacted status.

This comparison should not be used as a deadline calendar. Use it to identify which timing source must be checked for each company cohort before assigning work.

CSRD is tied to assurance of sustainability reporting. The audit framework includes assurance files, assurance reports, standards, independence rules, quality assurance, investigations, and sanctions through Member State implementation.

CSDDD is supervised by national authorities. It provides for information requests, investigations, orders, penalties, public statements, publication of penalty decisions, and civil liability where the Directive's conditions are met.

The review audience differs. For CSRD, prepare for assurance over reported sustainability information. For CSDDD, prepare for supervisory review and possible civil-liability scrutiny of due diligence conduct.

CSRD disclosures can include due diligence policies, adverse-impact information, value chain impacts, climate transition plans, and sustainability targets where material under ESRS.

CSDDD Article 16 says the annual CSDDD statement requirement does not apply to companies already subject to sustainability reporting under Articles 19a, 29a, or 40a of the Accounting Directive, including certain exempted companies.

The strongest integration point is communication, not scope. CSRD reporting may satisfy the CSDDD annual-statement channel for covered reporters, but it does not remove the CSDDD duty to perform due diligence.

ESRS value chain information can cover activities, resources, and relationships from conception to delivery, consumption, and end of life, including upstream and downstream actors where material.

CSDDD uses the defined concept of chain of activities. It covers upstream business-partner activities related to production or service provision and specified downstream distribution, transport, and storage activities carried out for or on behalf of the company.

Do not assume the two perimeter terms are identical. Keep a crosswalk showing which suppliers, distributors, logistics partners, products, services, and geographies are covered by each regime.