EU importers preparing their first annual Carbon Border Adjustment Mechanism (CBAM) declaration are required to connect customs records, imported quantities and eligible emissions information from the installations that produced the goods. The process goes beyond collecting supplier reports, because each emissions figure must match 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, leaving an intervening period to identify and resolve inconsistencies between supplier information and importers’ own records.
Linking covered imports to producing installations
The reconciliation process should start with the importer’s customs records, including identification of covered goods, quantities, classifications, origin and the responsible declarant. Each relevant import then needs to be linked to the producing installation and the applicable emissions information.
This linkage also applies when purchases are made through distributors or other intermediaries rather than directly from manufacturers. Importers must ensure that emissions data corresponds to the products and volumes declared, based on the applicable methodology.
Exceptions require separate investigation rather than automatic reconciliation. Examples include missing installation identifiers, producers reporting different emissions figures for multiple goods, preliminary reports later replaced by corrected final versions, and uncertainty about the relevant production period for material held in a trader’s inventory.
Discrepancies should not be resolved by averaging figures to complete the reconciliation. Importers need to determine which data applies to each relevant product and quantity under the methodology used for the declaration.
Managing verification documents and certificate inputs
Importers must also prevent duplicate records when the same verification report reaches them through multiple channels. These channels can include 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 are expected 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 clearly separate forecasting assumptions from declaration inputs. The verification of a producer’s emissions report does not automatically confirm that an importer’s entire customs ledger has been reconciled.
Assigning responsibility and maintaining audit-ready records
The verification engagement concerns the operator’s emissions report and its defined scope. The declarant therefore needs to determine who is responsible for linking verified information to imported goods and who approves the resulting certificate calculation.
A documented review involving customs, carbon-reporting and finance personnel can establish accountability for unresolved exceptions and changes from previous forecasts. A shared register with clearly assigned responsibilities can support review without relying on multiple 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, since loss of access to supplier or adviser records immediately after submission may complicate responses to subsequent reviews by EU authorities.
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 evidence supporting its submission for the required period.
Implications for Southeast European exporters supplying EU customers
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 repeated clarification requests as importers reconcile their records ahead of the filing deadline.