KPMG flags EU sustainability reporting changes, urges companies to act

EU sustainability reporting is becoming a cross-functional workload

EU sustainability reporting is no longer just a matter of polished ESG narratives. The latest changes are pushing the work into finance, audit, advisory, controls and cross-border compliance, which means KPMG teams are now dealing with reporting scope, data readiness, assurance and governance at the same time.

That matters inside a firm like KPMG because the pressure lands on the same people already managing busy season, client deadlines and promotion-cycle expectations. The practical question is no longer whether a client has an ESG story to tell. It is whether the company can prove, collect and control the data behind that story under changing EU rules.

What Brussels changed, and why it matters

The European Commission opened feedback on revised European Sustainability Reporting Standards on 6 May 2026 and kept the consultation open until 3 June 2026. The draft voluntary standard is based on EFRAG’s 2024 voluntary SME standard, and the Commission added a value-chain cap that limits what in-scope companies can ask from partners with 1,000 employees or fewer.

That simplification effort sits inside the wider Omnibus package, which the Commission says is meant to make sustainability reporting more efficient and less burdensome. In practical terms, the policy shift could reduce reporting load for some companies, while forcing others to rebuild their reporting architecture, materiality work and internal controls.

The Commission also said it would adopt the two delegated acts as soon as possible after the consultation closed. That is a signal to companies and advisers alike: this is not a wait-and-see moment. The rules are moving, and the implementation clock is still running.

The scope shift changes the workload, not just the rulebook

The biggest readiness gap is not in corporate messaging. It is in the operational detail that sits underneath it. KPMG’s guidance warns companies not to freeze their programs while they wait for policy certainty, and instead to start assessing how the new thresholds affect sustainability strategy and reporting processes.

That advice lands differently depending on where a company sits. Some firms may drop out of scope entirely, while others will still need to rethink data architecture, governance, reporting boundaries and materiality assessments. For KPMG teams, that means less time spent polishing broad sustainability statements and more time on the unglamorous work of defining systems, controls and evidence trails.

The Commission said its Omnibus proposal would remove around 80% of companies from the scope of the Corporate Sustainability Reporting Directive. It also said companies due to report in 2026 and 2027 would have reporting postponed until 2028. Even with that relief, the transition is staged, and Member States still have to transpose the postponement into national law by year-end.

For U.S. companies with European operations, that creates a familiar but frustrating dynamic: the strategy cannot wait for perfect clarity. Teams still need to monitor Member State transposition, map the scoping thresholds to the business and decide whether their current reporting processes can survive another round of rule changes.

Why this is an audit and assurance story, not just an ESG story

This is where the work stops being a sustainability communications exercise and starts looking like a serious assurance problem. The Committee of European Auditing Oversight Bodies said the revised ESRS may affect assurance engagements and warned that some proposed changes could create challenges for consistent implementation.

That concern should resonate with KPMG auditors and assurance professionals, because consistency is what gives reported information value. If companies interpret the revised standards differently across jurisdictions, or if the value-chain cap changes what data can be requested from suppliers and smaller partners, the downstream assurance work becomes harder and more judgment-heavy.

KPMG has also said the accelerated revision timeline created implementation challenges because some new or revised concepts lacked sufficient definition and guidance. In plain terms, clients are being asked to move quickly through a rule set that is still settling. That tends to generate more questions, more review cycles and more rework, especially when audit teams are asked to sign off on controls that were designed for an earlier version of the framework.

How the simplification process got here

The current round of changes did not appear overnight. EFRAG published simplified ESRS exposure drafts on 31 July 2025 after a 60-day public consultation, after being asked in 2025 by Commissioner Maria Luís Albuquerque to deliver technical advice on how to simplify the standards by November 2025.

That timeline helps explain why KPMG is treating the issue as a moving target rather than a one-off policy update. EFRAG’s simplification work continued through late 2025, and the Commission’s own 6 May 2026 consultation shows that Brussels is still trying to tune the balance between transparency and burden reduction.

The broader message is that sustainability reporting is maturing into a regime with the same structural complexity as financial reporting. It has drafts, consultations, delegated acts, transposition deadlines and assurance implications. For professionals inside KPMG, that means the work is increasingly about translating regulatory movement into client actions before the first reporting cycle under the new rules locks in bad habits.

Why ISSB alignment is becoming the next battleground

KPMG’s response also points to a bigger strategic issue: the need for closer alignment with the International Sustainability Standards Board. The firm said the focus should shift toward working with the ISSB to achieve fully aligned standards, a position that reflects a broader push for interoperability across reporting regimes.

That matters because fragmented standards are expensive. Clients do not want to build one reporting model for Europe, another for global capital markets and a third for internal risk management. The more the EU rules can line up with ISSB-style reporting, the less duplication companies face, and the easier it becomes for audit and advisory teams to design systems that can hold up across borders.

For KPMG staff, this is also a demand signal. The firms that can explain what changed, what stayed the same and what still needs to be built will be the ones clients lean on most heavily. The advisory opportunity is immediate, but the assurance work is likely to follow as companies move from interpretation to implementation.

The practical takeaway for clients and practitioners

The lesson in Brussels is simple: do not pause the program and hope the policy landscape settles itself. Companies need to use the current transition window to test scoping, stress data collection, review controls and decide how the revised thresholds change their reporting strategy.

For KPMG teams, that means ESG work is becoming more technical, more cross-functional and more deadline-driven. The firms that treat it as a controls and compliance issue, not just a sustainability narrative, will be better positioned to help clients avoid rework, reduce risk and keep pace with a rulebook that is still being rewritten.