IFRS and Carbon Credits: the moment climate claims became accounting questions

Carbon credits used to sit on the edge of finance—something sustainability teams discussed, while finance teams focused on cash, debt, and margins. That separation is fading fast. Globally, carbon credits and carbon allowances now shape procurement decisions, trading activity, transition plans, and how investors judge credibility. The bigger shift is that carbon is no longer only “an environmental story.” It is becoming a measurement story, a disclosure story, and in many cases, a profit-and-loss story.

This change is happening while IFRS Accounting Standards still do not have one dedicated, single “carbon credits standard.” The IASB has been researching pollutant pricing mechanisms (which can include the use of carbon credits/allowances) and, as of its January 2025 discussions, deferred the decision on whether to add a full standard-setting project to its work plan until a future agenda consultation.  That’s why you still see different accounting outcomes across industries and jurisdictions, even among companies that all report under IFRS.

The first distinction that matters: carbon credits vs carbon allowances

In global markets, people often say “carbon credits” as a catch-all, but finance teams need to separate two big categories.

Carbon allowances are typically created by compliance schemes (cap-and-trade or emissions trading systems), where entities surrender allowances to cover emissions. Carbon credits often refer to units issued by carbon crediting programmes representing reductions or removals, commonly used in voluntary markets or in meeting certain targets.

That distinction matters because business purpose drives accounting outcomes, and purpose varies widely between a manufacturer trying to meet an internal target and a trading desk running carbon positions.

Why IFRS treatment still varies in practice

Because there is no single IFRS standard that says “this is exactly how you account for carbon credits/allowances,” companies build policies using existing standards and disclose judgements clearly. European regulators have explicitly observed multiple accounting approaches in practice and are pushing for better transparency and decision-useful disclosure rather than prescribing one method.

What usually drives classification is the business model.

If an entity holds credits/allowances mainly to use/retire them (for compliance or to meet a stated emissions plan), they are often treated as non-monetary rights and may be assessed under IAS 38 (intangible assets), depending on facts and the rights’ characteristics.

If an entity holds them for trading as part of ordinary activities, practice often points toward IAS 2 (inventory), because the economic substance is closer to a commodity position that will be sold. ESMA’s statement on carbon allowances highlights the common approaches and the IFRS standards that issuers typically apply in this space.

If contracts are structured in ways that behave like financial instruments or derivatives (for example, forward contracts with features that meet IFRS 9 requirements), then IFRS 9 and fair value measurement questions can come into play.

What the IFRS Interpretations Committee has clarified recently

A key recent development is not a new “carbon credit standard,” but a reminder of discipline in how entities think about climate-related accounting.

In its discussion captured in the March 2025 IFRIC Update, the IFRS Interpretations Committee noted that the IASB has ongoing research on pollutant pricing mechanisms, some of which include carbon credits, and therefore the Committee did not separately decide the accounting for acquisitions of carbon credits as part of that submission.

The takeaway for global preparers is straightforward: you cannot assume there will be a quick interpretive “one answer” for carbon credits across all fact patterns. You build an accounting policy anchored in your purpose for holding them, apply IFRS principles consistently, and explain your judgements clearly.

The second global shift: disclosure standards are now forcing “credibility” into the report

Even where accounting classification remains judgement-heavy, disclosure expectations are tightening quickly because climate disclosures are becoming standardized and investor-facing.

IFRS S2 requires entities with net emissions targets to disclose planned use of carbon credits, and it pushes companies to explain factors that help users understand the credibility and integrity of those credits.  This is important because it moves carbon credits from a marketing claim into something that must be explained in a way capital markets can evaluate.

This disclosure pressure is also scaling globally because more jurisdictions are moving toward ISSB-aligned sustainability reporting. An IFRS Foundation adoption-status deck (September 2025) noted 37 jurisdictions had already decided to use, or were taking steps to introduce, ISSB Standards into legal or regulatory frameworks, representing large shares of global GDP, market capitalisation, and emissions.

So even if your current accounting policy is stable, your reporting burden is rising: investors will compare your carbon credit story to your cash flows, your risk narrative, and your financial statement assumptions.

The “connectivity” problem: where many global reports still break

A common weakness in real-world reporting is when sustainability disclosures sound confident, but the financial statements look unaware.

Regulators are increasingly focused on “connectivity”—the idea that climate-related assumptions used in impairment testing, provisions, fair values, useful lives, and forecasts should not contradict the story told in narrative climate sections. ESMA’s carbon allowances statement explicitly calls for improved transparency and decision usefulness, and it highlights the need for consistency and connection across the annual report.

In plain terms: if a company says carbon prices will rise materially, or it plans to rely heavily on carbon credits, users will expect to see those assumptions reflected in financial modelling, risk disclosures, and potentially valuations.

What global CFOs and auditors are now watching closely

At global scale, the financial risks around carbon credits are not only about price. They’re also about integrity and control.

If a credit is later challenged (methodology risk), double-counted (registry risk), or becomes unusable for the stated purpose (policy or buyer acceptance risk), then the economic value changes. That becomes a question of measurement, impairment, and disclosure discipline, not only “sustainability reputation.”

This is why the best global reporting is moving toward tighter governance: strong documentation of the business purpose for holding credits, strong internal controls over registries and counterparties, consistent valuation methodologies, and disclosures that match what the numbers imply.

The executive point

Globally, carbon credits are entering the same world as foreign exchange, commodities, and complex procurement—where intent, structure, and controls decide the accounting, and where disclosure expectations are now hardening around credibility.

IFRS has not yet delivered a single “carbon credits rulebook,” and the IASB’s pollutant pricing mechanisms work remains a research area with decisions deferred.  But markets are not waiting. With IFRS S2 pushing planned-use and integrity disclosures into the mainstream, carbon credits are becoming something investors will price—and question—with the same seriousness as any other asset, inventory position, or risk exposure.