Changes to the European Union Emissions Trading System (EU ETS) are emerging as a source of financial and regulatory uncertainty for companies subject to the Carbon Border Adjustment Mechanism (CBAM). While importers meet CBAM obligations at the customs and declaration level, their cost exposure is linked to how the EU carbon market functions. The EU ETS sets the reference price for CBAM certificates, and its free-allocation rules affect the calculation of residual emissions liability for covered imports.
Developments in either the reference pricing or the free-allocation framework can change the overall cost of CBAM compliance. This means that EU ETS policy shifts can affect importers even when they are not directly purchasing allowances for their own operations. The interaction between the two regimes creates both market-linked and methodology-linked exposure for covered goods.
European Commission proposal targets EU ETS parameters affecting CBAM
On 17 July 2026, the European Commission proposed a targeted revision of the EU ETS. The proposal covers industrial competitiveness, free allocation, CBAM and the Market Stability Reserve (MSR). The legislative process is expected to introduce uncertainty for importers assessing future carbon costs.
Allowance-market changes could influence expected EUA prices. At the same time, adjustments to free-allocation arrangements could affect the quantity of emissions that feed into CBAM obligations. Together, these elements create multiple pathways through which EU ETS reform can alter importer costs.
Allowance supply changes can move EUA-linked CBAM certificate prices
The first transmission channel runs through EU emissions allowance prices. Changes that affect expected availability and scarcity can shift the forward carbon-price curve. A tighter emissions cap or a faster reduction in allowance availability could increase EUA values.
In contrast, weaker industrial demand or additional allowance supply could put downward pressure on prices. Because CBAM certificate prices are linked to EU ETS auction prices, expectations about future allowance-market conditions can influence anticipated compliance expenditure. This connection requires companies importing covered goods to track EU ETS developments even if they do not buy allowances directly.
Free-allocation adjustments change how residual emissions liability is calculated
The second transmission channel concerns how CBAM interacts with free allocation for EU industrial producers. The CBAM framework was designed to be phased in alongside a progressive reduction of free allowances allocated to covered sectors under the EU ETS. As a result, an importer’s effective certificate obligation cannot be derived by simply multiplying total embedded emissions by an expected EUA price.
The applicable free-allocation adjustment and benchmark methodology also determine the emissions quantity used to set the CBAM obligation. This creates a regulatory exposure that is separate from movements in carbon prices. Even if expected EUA prices remain unchanged, changes to how residual emissions are calculated for CBAM purposes could alter an importer’s financial liability.
Treasury hedging manages carbon-price risk but not legislative changes
The split between price exposure and regulatory exposure has implications for corporate treasury policies. Companies can use EUA futures, options and swaps, along with staged purchasing strategies, to manage expected movements in carbon prices. However, these tools cannot fully protect importers from legislative changes that alter the quantity of emissions covered by their CBAM obligation.
This creates basis risk between hedged financial positions and the underlying regulatory liability. Treasury departments therefore need to distinguish market risk from policy risk when setting hedge ratios and exposure limits. Regulatory uncertainty may require contractual change-in-law provisions and periodic reassessment of hedge parameters.
Companies may also need to avoid hedging volumes that exceed what is appropriate before the applicable regulatory calculation and certificate requirements are sufficiently established. The timing of those requirements affects how well hedges align with eventual CBAM obligations.
Banks and traders assess combined market and legislative credit risks
The same distinction applies to banks and commodity traders assessing creditworthiness for companies importing CBAM-covered goods. A borrower may have hedged expected EUA price exposure while still being exposed to changes in the methodology used to calculate its CBAM liability. In such cases, an assessment focused only on carbon-price hedging could underestimate remaining exposure.
Credit analysis needs to combine EUA price stress tests with regulatory scenarios covering potential changes to free allocation, allowance supply and the CBAM calculation itself. For lenders and commodity financiers, carbon exposure therefore includes both a market-price component and a legislative component.
Treating those elements as a single financial risk could leave material changes in future compliance costs outside the assessment framework.