Yes. Article 25 of the CBAM Regulation provides that “customs authorities shall not allow the importation of goods by any other person than an authorised CBAM declarant”.

Source: EC’s Questions and Answers on CBAM 

CBAM Regulation

• CBAM Regulation

• EU to support energy-intensive sectors with temporary decarbonization fund propos
• Why is the EU putting in place a Carbon Border Adjustment Mechanism?
• What is the current stage of implementation of CBAM?
• How does the CBAM work?
• How does CBAM interact with the EU Emissions Trading System (ETS)?