CSRD: An Overview
The Corporate Sustainability Reporting Directive (CSRD)replaces the Non‑Financial Reporting Directive (NFRD) to require more expansive, detailed, and auditor‑assured sustainability disclosures. Under CSRD, companies must report under the European Sustainability Reporting Standards (ESRS) and include sustainability information within their annual management reports - not separately. CSRD expands scope, mandates third‑party assurance, and codifies stronger transparency measures for environmental, social, and governance impacts.
Key Elements & Requirements
Double Materiality & Material Topics
CSRD’s core concept is double materiality - companies must assess both:
1. The impacts their activities have on the environment and society, and
2. The financial effects of ESG factors on the company’s performance. This dual lens determines which sustainability topics are material. Reporting must cover the company’s operations and upstream/downstream value chains.
ESRS & Disclosures
Reporting is structured around ESRS topical standards (e.g. climate, biodiversity, social, governance). UK Companies must disclose according to core, topical, and sectoral standards, with narrative, qualitative, and quantitative metrics.
Timing & Scope
CSRD applies to large EU companies, listed companies including SMEs, and non‑EU companies with significant presence in the EU. The first reporting under CSRD begins for financial years starting on or after 1 January 2024 (reports published 2025).
Assurance & Audit
CSRD introduces mandatory limited assurance for sustainability information. Over time, more rigorous forms of assurance (e.g. reasonable assurance) may be required. This means your CSRD audit /auditing practices must evolve in tandem with your data systems and assurance readiness.
Jurisdictional Adoption & UK Context
While ISSB standards are designed as a global baseline, individual countries - including the UK - may adopt or adapt them within national regulation frameworks. In the UK, companies preparing to comply with upcoming ESG and sustainability regulation will need to align with ISSB’s expectations and often map them to UK/EU rules (e.g. CSRD).
Nossa Data’s ISSB Reporting Solution
Accreditation & Template Support
Nossa Data is accredited to support ISSB (IFRS S1 & S2) within its ESG platform. Companies can access prebuilt ISSB sustainability templates and generate disclosures ready for inclusion in general-purpose financial reports.
Interoperability + Cross‑Framework Mapping
Our solution helps companies map ISSB requirements alongside other ESG frameworks such as CDP, ESRS (CSRD), GRI, SASB and TCFD - enabling coherent, multi-framework sustainability reporting.
Time-saving & Guidance
Leverage AI-enabled gap analysis, indicator-level guidance, and collaborative workflows to speed up ISSB reporting maturity. Outputs are IFRS-approved, helping your company adhere strictly to ISSB regulations.
Nossa Data’s CSRD Reporting Solution
Gap Analysis & Framework Alignment
We help companies conduct a gap analysis to align existing ESG/sustainability programmes with CSRD requirements. Through our platform, users can embed guidance, questions aligned to ESRS, and prepare disclosures aligned with CSRD standards.
End‑to‑end CSRD Data Management
Nossa Data offers a unified
CSRD reporting solution: from data collection and controls, materiality assessments, to assurance readiness and output generation.
Interoperability & Cross‑Framework Mapping
Our platform enables you to map CSRD disclosures alongside ISSB, CDP, and EcoVadis consistently. You can generate coherent outputs for both sustainability and investor audiences. For example, you can map your CSRD and ISSB disclosures side by side via our
ISS Breporting software integration.
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