Double materiality is the concept that traps most companies. Both directions, both angles, both audiences.
Runs on your public disclosures. Nothing from you.
You are the CFO or Group Sustainability Head at an Indian company with an EU subsidiary or an EU parent above the CSRD threshold. Your EU parent must file CSRD next year. Your Indian entity is inside the group boundary.
The Corporate Sustainability Reporting Directive (CSRD, EU Directive 2022/2464) requires large EU undertakings and listed SMEs to disclose sustainability information under the European Sustainability Reporting Standards (ESRS). Non-EU parent companies with more than EUR 150M in EU turnover and one significant EU subsidiary or branch are also caught, from FY 2028 onward. CSRD reports go inside the management report, filed with the EU in a machine-readable XBRL taxonomy, and get limited assurance moving to reasonable assurance.
CSRD applies phased: large public-interest entities file for FY 2024 in 2025, large undertakings meeting two of three tests (250 staff, EUR 50M turnover, EUR 25M assets) file for FY 2025 in 2026, listed SMEs file for FY 2026 in 2027, and non-EU parents from FY 2028.
The reporting standard is ESRS, twelve topical standards covering climate (E1), pollution (E2), water (E3), biodiversity (E4), circular economy (E5), workforce (S1 to S4), governance (G1), plus two cross-cutting standards.
The double materiality assessment is the entry gate. A topic is material if it affects the company (financial materiality) or if the company affects people or the environment (impact materiality). Both directions must be assessed and documented.
The EU Omnibus package in early 2025 relaxed some thresholds and delayed some dates, but did not change the direction. FY 2025 data collection is happening now, for the 2026 filing. Indian entities inside EU groups get the data request today.
Three failure modes we see on every CSRD scan.
The company assesses financial materiality only. The impact side stays blank. ESRS 2 requires both. The filing is incomplete.
A Scope 3 number without a documented value-chain map does not satisfy E1. The auditor asks for the map. It does not exist.
Board oversight of climate written as generic paragraphs. ESRS G1 asks for named committees, cadences, and decisions. Generic answers get flagged.
Carbon-OS runs the double-materiality assessment with a documented workflow: stakeholders consulted, impacts scored, evidence attached.
Suppliers, customers, use-phase, end-of-life are all mapped as first-class objects. Scope 3 categories tie back to the map.
Every disclosure is tagged to the ESRS datapoint. The XBRL export is generated from the tags.
Only if you have an EU subsidiary above the threshold, or an EU parent that consolidates you, or you sell more than EUR 150M into the EU with an EU footprint. Otherwise, you are asked to provide data upward, not to file directly.
FY 2028, with first filings in 2029. That gives non-EU groups four cycles to prepare from today.
CSRD is disclosure. The Corporate Sustainability Due Diligence Directive (CSDDD) is action: due diligence obligations on the value chain. Separate directives, related audiences.
A topic is material if it affects the company financially, or if the company affects people or the environment. ESRS requires you to assess and disclose both directions for every topic.
Yes. CSRD reports must be filed in the European Single Electronic Format (ESEF), an XBRL taxonomy that tags every ESRS datapoint. It is not optional.