Finance & Investment

Why Finance Teams Are Taking the Lead on Sustainability Disclosure

Among larger organizations in assurance-heavy jurisdictions, the CFO has become a central figure in sustainability disclosure in a way that would have seemed unlikely five years ago. The shift is not organizational politics. It is the direct result of regulations that have changed what reporting structurally requires, and by extension, who is best positioned to build it.

By Krutika Sharma | Published 2 weeks ago | About a 7 minute read

Image: Photo by Yibei Geng on Unsplash

Three Regulations That Changed the Architecture

For most of the past two decades, sustainability reporting was a narrative exercise. Teams gathered data, wrote annual reports, and published them as stand-alone documents. The verification standard was low; the audience was broad. Three regulations have since altered the underlying requirements in ways that matter for how organizations are structured.

The CSRD (revised by the EU's Omnibus package in February 2026) now applies to organizations with more than 1,000 employees and €450 million in annual turnover, requiring mandatory limited assurance, documented data lineage, board sign-off, and reporting under simplified ESRS.
The ESEF extends iXBRL tagging to sustainability disclosures, making reports machine-readable and taxonomy-mapped.
The ISSB's IFRS S1 and S2 standards bring sustainability risks and opportunities into investor-focused reporting, requiring climate risk to be discussed alongside capital allocation decisions.

Taken together, these three requirements describe a reporting function that needs audit-ready workflows, version-controlled data, and systems capable of withstanding external scrutiny. That is a finance capability. It is also, increasingly, a cross-functional one: IT, legal, procurement, and operations all have a role in building the underlying data architecture.

The Infrastructure Gap and What It Looks Like in Practice

The challenge facing most organizations is not that sustainability data is absent. Most companies in scope for CSRD or ISSB have been collecting metrics for years. The problem is that much of that data was built for voluntary disclosure, not for external verification. According to recent CSRD research, 83% of companies report that collecting accurate CSRD data is significantly challenging, and 29% indicate they feel unprepared for ESG audits.

A practical illustration: a sustainability team may calculate Scope 2 emissions accurately, using the correct methodology and current conversion factors. But if those figures cannot be traced to metered source data, if there is no version control on the inputs, and if no formal approval workflow exists, the number may still fail an assurance review. Not because it is wrong. Because it cannot be proven to be right. That is the gap that needs closing, and closing it requires the kind of process discipline that finance functions have spent decades building.

A 2024 Verdantix global survey found 73% of sustainability leaders now view the CFO as among the most influential figures in funding and governing ESG strategies. Protiviti’s 2025 Finance Trends Survey found ESG moved from 14th to 9th in CFO priorities in a single year, the largest upward shift of any category tracked. Among organizations preparing for CSRD-grade assurance, this is not a theoretical trend. Finance teams are actively taking ownership of the reporting architecture.

How Leading Organizations Are Responding

The organizations managing this transition most effectively are not simply reassigning tasks. They are redesigning how the two functions relate. A 2024 study by Kearney and We Don’t Have Time, covering 500 CFOs across sectors and geographies, found over 90% of CFOs at companies with integrated sustainability strategies expect revenue to grow as a result. Integration is not just a compliance response. It carries commercial logic.

Three approaches characterize organizations making real progress:

Shared data ownership. Emissions figures, energy data, and social indicators are being brought into the same governance frameworks as financial data. Finance brings accountability structures. Sustainability brings the subject matter knowledge to define what gets measured and why. Neither function can do the other's job.
Joint reporting oversight from the outset. Rather than sustainability producing a report and asking finance to validate it at the end, leading organizations build cross-functional ownership from the beginning of the cycle. Research on aligning finance and sustainability teams consistently shows that late-stage validation produces weaker disclosure than early joint ownership.
Systems built for verification, not just collection. Spreadsheet-based processes are being replaced by platforms that produce a documented, traceable, auditable output. Organizations that have made this investment typically find the assurance process more manageable, because the work is done before the auditor arrives.

It is worth being honest about how this transition feels from the inside. It is rarely smooth. Ownership disputes, incompatible systems, and differing views on what data matters are common. Finance teams can lack ESG subject matter knowledge. Sustainability teams can feel displaced from processes they built. ERP systems were not designed with sustainability metrics in mind. The organizations making this work are doing so iteratively.

What This Means for Sustainability Teams

Sustainability teams built corporate ESG disclosure from the ground up, often without meaningful organizational support, against significant internal resistance, and well before regulation mandated any of it. The function created the metrics, the frameworks, the stakeholder relationships, and the reporting culture that now underpins a significant portion of corporate accountability. That foundation matters.

The shift described in this article is not a correction of that work. It is what maturation looks like. As external requirements have become more technically demanding, the operational side of disclosure production has grown into a function that finance is better equipped to run. That does not diminish what sustainability built. It frees the function from work that was never its natural territory.

The CSO's most valuable contribution is not configuring taxonomy mappings or defending data methodology in front of auditors. It is setting direction: which commitments the organization makes, how it engages its value chain, where it chooses to go beyond what regulation requires. In the organizations doing this well, finance produces the auditable record of what is happening; sustainability determines what should be happening. Linking executive compensation to sustainability performance reflects exactly this division, where finance verifies the metrics and sustainability sets the ambition.

That said, the risks of an over-financialized approach to sustainability disclosure deserve acknowledgment. When assurance and quantification become the primary lens, there is a real tendency for measurable metrics to crowd out material issues that resist numerical treatment. Social risks, ecosystem dependencies, and long-term resilience questions do not always fit neatly into the formats that audit processes prefer. Finance-led disclosure that optimizes for verification at the expense of relevance would be a poor outcome. Subject matter expertise is not optional. It is the check on that risk.

Practical Starting Points

For teams working through this now, three questions tend to surface the most important gaps:

Who owns each data point? Map every required metric to a named owner, validator, and sign-off. Ambiguous ownership is consistently where errors accumulate across a reporting cycle.
Can each figure be traced to its source? If not, build that traceability before the next assurance cycle. This is a systems and process investment, not just a data quality problem.
Have finance and sustainability agreed on a shared operating model before reporting season starts? Governance questions resolved under deadline pressure tend to produce fragile answers. Agreement in advance is the simplest improvement most organizations can make.

The Direction of Travel

At some point in the near future, asking whether a sustainability disclosure meets financial reporting standards will seem like an odd question, because the underlying systems will be the same. This convergence is already visible in organizations at the leading edge of this transition. Their sustainability verification processes sit inside their enterprise oversight architecture. Their ESG data flows through the same systems as their financial statements. Their reports are reviewed by the same audit committee that reviews their accounts.

For these organizations, sustainability reporting has not become more burdensome. It has become more defensible. And in a market where the gap between disclosed commitments and verified outcomes is under growing scrutiny, defensibility is starting to look like a strategic advantage.

The CFO's growing role in this is not a side effect of regulation. It is what happens when disclosure is taken seriously enough to be built properly. The question for most organizations is not whether this convergence is coming. It is whether they are building for it now or waiting until they have to.