The National Competent Authorities (NCAs) of each EU Member State oversee access to the CBAM Transitional Registry,
enabling reporting entities to submit their CBAM reports.
However, importers cannot register by themselves. Registration must be done through the National Competent Authority (NCA) of the country where your company is located 

Simple steps:
1. Contact the NCA in your EU country
2. Request registration for the CBAM Registry
3. Wait for approval, then log in to the system
4. Submit your CBAM quarterly reports directly in the system

🔗 Check the list of NCAs for each EU country here:
https://taxation-customs.ec.europa.eu/document/download/5595ce5b-9fd2-42f6-9908-ed6325338ffa_en?filename=231030%20CBAM%20-%20NCAs%20provisional%20list.pdf