EU importers preparing their first annual Carbon Border Adjustment Mechanism (CBAM) declaration must connect customs records, imported quantities and eligible emissions information from the installations that produced the goods. The process requires more than collecting supplier reports: each emissions figure must correspond to the relevant products and volumes included in the declaration.
For 2026 imports, the first annual declaration is due on 30 September 2027. Under the Commission’s implementation timetable, the first verification reports are expected to be issued from January 2027, giving importers an intervening period to identify and resolve inconsistencies between supplier information and their own records.
Matching imported goods to production installations
The reconciliation process should begin with the importer’s customs records, identifying covered goods, quantities, classifications, origin and the responsible declarant. Each relevant import must then be linked to the producing installation and the applicable emissions information, including where purchases are made through distributors or other intermediaries rather than directly from manufacturers.
Exceptions require separate investigation. These can include missing installation identifiers, producers reporting different emissions figures for multiple goods, preliminary reports subsequently replaced by corrected final versions, and uncertainty over the relevant production period for material held in a trader’s inventory.
Such discrepancies should not be resolved by averaging figures simply to complete the reconciliation. Importers need to establish which data applies to each relevant product and quantity under the applicable methodology.
Document control and certificate calculations
Importers must also guard against duplicate records when the same verification report arrives through several channels, including supplier emails, advisers and registry systems. Each document should have a controlled identity in the importer’s records and be linked to the relevant imports. Receiving multiple copies of one report does not establish that multiple installations have been verified.
Finance teams need to distinguish between confirmed verified emissions values, estimates used for budgeting and applicable default values when assessing potential certificate requirements. Management forecasts may include alternative scenarios, but the formal declaration must follow the prescribed methodology and use eligible information. Calculation files should make the distinction between forecasting assumptions and declaration inputs explicit.
The verification of a producer’s emissions report does not automatically establish that the importer’s entire customs ledger has been reconciled. The verification engagement concerns the operator’s emissions report and its defined scope. The declarant therefore needs to determine who is responsible for linking the verified information to imported goods and who approves the resulting certificate calculation.
Internal controls and record retention
A documented review involving customs, carbon-reporting and finance personnel can establish accountability for unresolved exceptions and changes from previous forecasts. A shared register and clearly assigned responsibilities can provide a common basis for review without requiring several disconnected reporting systems.
Importers should also arrange continued access to supporting documentation after filing. Verification reports and other declaration records must remain available for the applicable retention period. If access to supplier or adviser records expires immediately after submission, responding to a subsequent review by EU authorities may become more difficult.
Contracts with suppliers and service providers should address continued access when an adviser changes or a commercial relationship ends. The arrangements should ensure that the declarant can retrieve the evidence supporting its submission for the required period.
For Southeast European exporters, maintaining a clear register of production installations, report versions and shipment links can help EU customers integrate supplier information into their compliance systems. Providing these details early can reduce the need for repeated clarification requests as importers reconcile their records ahead of the filing deadline.
