The Corporate Sustainability Reporting Directive is turning IT from an occasional data source into an accountable one. Here is what actually changes, why 2027 matters, and where to start.

For most of its existence, corporate sustainability reporting has been a finance and legal exercise, with IT called in occasionally to pull a spreadsheet together. The Corporate Sustainability Reporting Directive (CSRD) is ending that arrangement. As European enterprises move through 2026 and 2027, CSRD IT compliance is becoming a distinct operational requirement in its own right, and IT departments that have not yet been asked for emissions data, hardware inventories or cloud energy figures should expect that request soon.

This article sets out what has actually changed under the CSRD, why 2027 is a pivotal year regardless of which reporting wave an organisation sits in, and what IT departments specifically need to put in place to meet the directive’s requirements without scrambling at the last minute.

The CSRD came into force in January 2023 and applies in phases based on company size and listing status. Large companies already reporting under the previous Non-Financial Reporting Directive filed their first CSRD reports in 2025, and the largest EU undertakings began reporting in 2026 on their 2025 financial year.

The picture became more complicated in late 2025, when the EU’s Omnibus simplification package revised the directive’s scope and thresholds. Under the revised rules, Wave 1 companies continue reporting through the 2026 and 2027 cycles under transitional “quick fix” provisions, while many mid-sized companies that were originally due to report from 2025 or 2026 have been pushed to 2028, reporting on 2027 financial year data. Listed small and medium-sized enterprises have been removed from mandatory scope entirely, though they may still report voluntarily.

Three things converge in 2027 that make it a meaningful year for IT departments, even outside the companies with a mandatory filing due:

None of this means every company files a mandatory report in 2027. It means the infrastructure for producing an audit-ready report — the data collection habits, the documentation, the internal ownership — needs to already be working by the time a company’s wave arrives. Building that infrastructure is an IT-led exercise.

The CSRD requires disclosure against the European Sustainability Reporting Standards (ESRS), and the climate standard, ESRS E1, requires companies to report on Scope 1, Scope 2 and Scope 3 greenhouse gas emissions. For a great many organisations, particularly those with limited manufacturing or logistics footprints, IT is one of the largest sources of Scope 3 emissions: cloud services, hardware manufacturing and its supply chain, data centre energy consumption and end-of-life device disposal.

The scale of the ICT sector’s footprint is not trivial. A 2023 peer-reviewed review of lifecycle assessments by Bieser, Hintemann, Hilty and Beucker, published in Environmental Impact Assessment Review, put the ICT sector’s share of global greenhouse gas emissions at between 1.5 and 4 percent — a range comparable to global aviation — with device manufacturing accounting for a major share of that figure.

This creates a practical problem that finance teams cannot solve on their own. A finance function can compile a sustainability report, but it cannot generate accurate data on cloud provider carbon intensity by region, laptop refresh cycles, server utilisation rates or e-waste disposal volumes. That data sits with IT, and under CSRD it needs to be collected, documented and defensible, not estimated once a year under deadline pressure.

Meeting the disclosure requirements that touch IT infrastructure generally comes down to four areas of work.

None of this sits comfortably within IT alone. It requires ongoing coordination with sustainability, finance and procurement functions, and increasingly a named owner within IT who is accountable for the data rather than treating it as a side task.

Organisations that are not yet in mandatory CSRD scope still benefit from starting this work early, since retrofitting data collection after the fact is considerably harder than building it in from the outset. A reasonable starting sequence looks like this:

One risk in this process is worth naming directly. Under pressure to produce a positive-looking sustainability narrative, it is tempting to report the most favourable metrics available and leave the less flattering ones out. CSRD’s assurance requirements make this a genuine risk rather than a reputational nuance: disclosed figures need to reconcile to the underlying operational data, and an auditor testing that reconciliation will find the gaps. IT departments are often the ones holding the underlying data, which puts them in a position to keep the reporting honest even when the pressure to shade it runs the other way.

CSRD IT compliance is not a single filing to prepare for. It is a shift in how IT departments are expected to hold and account for their own operational data, on a timeline that is now largely set by EU regulation rather than internal priorities. 2027 will not be the year every European enterprise submits a mandatory report, but it is shaping up to be the year the underlying data infrastructure stops being optional.