CSRD Limited Assurance for FY2025: What Fashion Brands Must Be Able to Show

Limited assurance is a data test, not a copy‑edit

Under the Corporate Sustainability Reporting Directive (EU) 2022/2464, the term “limited assurance” means that an external auditor will verify the existence and reliability of the data behind a sustainability report, rather than merely reviewing the narrative for consistency. The auditor’s checklist focuses on the underlying datasets—transaction‑level emissions, supplier contracts, workforce records—because limited assurance is a statistical test of data quality. For CFOs and sustainability controllers, this translates into a need for traceable, digitised records that can be sampled and cross‑checked without extensive manual justification.

Who is in Wave 2 and when FY2025 files

Wave 2 captures companies that meet at least two of the three thresholds set by the CSRD: more than 250 employees, a balance‑sheet total exceeding €25 million, or net turnover above €50 million. Fashion brands that fall into this category will produce their first CSRD‑compliant report for fiscal year 2025, with the mandatory filing deadline in 2026. The reporting year therefore aligns with the financial year that ends in 2025, but the public filing occurs the following calendar year.

What double materiality pulls into the pack

CSRD requires reporting on both financial materiality (how sustainability issues affect the company’s value) and impact materiality (how the company’s activities affect the environment and society). The European Sustainability Reporting Standards (ESRS) enforce this double‑materiality approach. ESRS 1 and ESRS 2 are mandatory for all entities, while topic‑specific standards—E1 to E5 (environment), S1 to S4 (social), and G1 (governance)—apply according to the materiality assessment. For fashion brands, the double‑materiality lens typically flags supply‑chain emissions and labour conditions as high‑risk areas.

Why Scope 3 and S2 dominate fashion files

In the fashion sector, the majority of greenhouse‑gas emissions are indirect, falling under Scope 3 of the GHG Protocol. These emissions arise from raw‑material extraction, textile production, transport, and end‑of‑life handling. Because Scope 3 can represent more than 80 % of a brand’s total carbon footprint, it is almost always material under the impact dimension.

Socially, ESRS S2 addresses “workers in the value chain.” Fashion supply chains are global and labour‑intensive, making S2 a material topic for both impact and financial reasons—non‑compliance can trigger regulatory fines, brand‑reputation damage, and disrupted sourcing.

Product‑level records auditors can actually sample

Limited assurance demands that auditors be able to select a representative sample of data points and trace them back to source documents. For fashion brands, the most audit‑ready records include:

• Material composition per SKU: Bill‑of‑materials (BOM) files that list fibres, blends, and percentages for each product.
• Supplier‑level CO₂ data: Verified emissions factors supplied by Tier‑1 or Tier‑2 manufacturers, linked to purchase orders.
• Sourcing origin: Certificates or customs declarations that confirm country‑of‑origin and any sustainability certifications (e.g., GOTS, FSC).
• Worker‑rights documentation: Audits, contracts, or third‑party verification reports that cover wages, working hours, and health‑and‑safety compliance for each supplier.

When these records are stored in a structured, queryable format, auditors can request a random subset—say, 5 % of the SKU portfolio—to validate the completeness and accuracy of the disclosed Scope 3 emissions and S2 metrics.

How KadmilOS fits in

KadmilOS provides a single, EU‑compliant platform that automates the collection, validation, and reporting of the data points listed above. By integrating directly with ERP, procurement, and product‑information systems, KadmilOS creates a live data lake that maps each SKU to its material composition, supplier emissions, and workforce‑rights records. The built‑in audit‑ready export function generates the exact tables and supporting documentation auditors request for limited assurance, reducing manual sampling time from weeks to days.

Beyond data aggregation, KadmilOS embeds the double‑materiality assessment framework required by ESRS 1 and ESRS 2. Users can flag high‑impact topics, run scenario analyses on Scope 3 emissions, and produce the mandatory disclosures for ESRS E1‑E5, S1‑S4, and G1. The platform also logs every data change, creating a tamper‑evident trail that satisfies the auditor’s demand for traceability.

For CFOs, the financial‑materiality side is covered through KPI dashboards that link sustainability performance to cost drivers, risk exposure, and capital‑allocation decisions. For sustainability controllers, KadmilOS offers a granular view of product‑level impacts, enabling proactive remediation before the 2026 filing deadline.

Preparing for FY2025 limited assurance is a matter of turning scattered spreadsheets into a single source of truth that auditors can test. With KadmilOS, fashion brands can meet the CSRD’s double‑materiality requirements, demonstrate reliable Scope 3 and S2 data, and protect their bottom line.

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