Companies importing CBAM-covered products into the European Union during 2026 will need to finance their associated carbon liabilities in the following year, when certificate purchases begin and the first annual surrender deadline arrives. The gap between the import period and the payment schedule creates a working-capital requirement that businesses must account for before their final emissions obligations are established.
CBAM certificates become available for purchase from February 2027, while the first annual declaration and corresponding certificate surrender are due by 30 September 2027. Although the emissions relate to goods imported throughout 2026, the cash requirement will arise later, potentially after those products have already been sold or processed.
Carbon liabilities can outlast the underlying transactions
The timing is particularly relevant for businesses handling large volumes on narrow margins. A metals trader may buy thousands of tonnes under short payment terms and resell the material well before its CBAM obligation is finalised. A cement importer may have received payment from a distributor while still waiting for the producing plant to provide verified emissions information.
In both cases, the carbon expense remains linked to the earlier imports even though the certificate payment falls into a later financial period. Importers therefore need to consider the future liability when pricing transactions and planning liquidity, rather than treating it as a cost arising only at the annual compliance deadline.
The calculation also requires more than applying an EUA price to imported tonnage. The final requirement depends on embedded emissions, adjustments reflecting EU free allocation and any eligible deductions for carbon prices paid abroad. These variables can differ across products and installations, particularly where an importer sources from multiple suppliers.
A transaction-level ledger should record each consignment, import quarter, relevant benchmark, calculation methodology and verification status. This allows provisional carbon accruals to be updated as supplier evidence becomes available and the expected certificate requirement changes.
Scenario modelling identifies potential funding gaps
Treasury teams can estimate their exposure using three emissions scenarios: verified actual emissions close to the applicable benchmark, a higher-emissions outcome and a default-value scenario where sufficient evidence is unavailable.
Each case can then be assessed against a suitable range of ETS-linked prices and the applicable CBAM calculation rules. The resulting estimates indicate the potential funding requirement and show which missing supplier records contribute most to uncertainty.
A single carbon-cost percentage applied across an entire corporate group is unlikely to reflect differences between products, installations and suppliers. The funding model needs to capture those variations rather than rely on one general estimate.
Monthly cash forecasts should incorporate the expected certificate requirement well before the September 2027 deadline. A rolling model can organise shipments by import quarter, supplier, estimated embedded emissions and the quality of available verification evidence, producing low and high funding estimates.
Management can compare these projected requirements with revolving credit availability and possible customer prepayments. The model must also accommodate changes in the expected liability: pending plant verification may alter the emissions volume, while an eligible foreign carbon-price deduction may reduce the net amount due.
Trade-finance banks will need shipment-level carbon information
The same records can support lenders reviewing the liquidity of importing businesses. This is particularly relevant for fast-turnover traders, where gross profit may be modest relative to the value and volume of imported metals.
Banks providing trade finance will need to distinguish the customs value of goods from the separate cash outlay associated with CBAM certificates. Revolving facilities may require additional headroom to cover the timing gap between imports and certificate purchases.
Borrower covenants may also need to reflect differences between when carbon expenses arise, when inventory is sold and when certificates must be purchased. Importers could respond by seeking carbon-cost deposits from customers or renegotiating payment terms with exporters that control access to production and emissions data.
These financing arrangements make the quality and timing of supplier information commercially significant. Delayed emissions documentation can affect not only the final certificate calculation but also the importer’s ability to forecast and secure the necessary funds.
Verification and customs controls affect the final exposure
Funding arrangements need to be supported by operational compliance procedures. Buyers require authorised-declarant status where applicable, accurate customs classifications, access to the CBAM registry and an established process for collecting installation-level emissions information.
Independent verification of actual emissions can take time and may involve site visits and documentary reviews. If a supplier does not provide the required evidence within the relevant timeframe, the importer may need to plan around default values or other permitted fallback arrangements instead of assuming that lower reported emissions will be accepted.
The quality of emissions records therefore has a direct bearing on the reliability of the financial forecast. Companies need to track verification progress alongside shipment and payment information so that unresolved data gaps are reflected in their funding estimates.
The first annual declaration and surrender deadline on 30 September 2027 will cover the carbon exposure associated with imports made during 2026. By then, importers will need to reconcile the goods already traded with their verified emissions information and the certificates required under the mechanism.
