Navigating the transition from CHIEF to CDS can be complex. We’ve answered the most common questions from UK exporters to help you stay compliant.
Is CHIEF still available for export declarations?
No. As of February 2026, HMRC has fully decommissioned the CHIEF system. All new export declarations must now be submitted through the Customs Declaration Service (CDS). If you have not migrated your processes yet, you will be unable to legally move goods out of the UK.
What is the biggest difference between a CHIEF "Box" and a CDS "Data Element"?
While CHIEF used "Boxes" that often combined multiple pieces of information, CDS uses 65 specific Data Elements (DE) for exports. These are grouped into 8 categories (e.g., Parties, Valuation, Transport). This means CDS requires more granular data, but it also allows for better automation and fewer manual queries from HMRC.
Do I still need an EORI number?
Yes. You must have a GB EORI number to export from Great Britain. Additionally, you must specifically register your EORI for the Customs Declaration Service through your Government Gateway account to allow software like FastFreight to communicate with HMRC on your behalf.
Who is legally responsible if a declaration is wrong?
The trader (the exporter) bears the legal responsibility for the accuracy of the declaration, even if a freight forwarder or agent submits it for you. This is why using a system like FastFreight is beneficial—it allows you to retain control and visibility over your own data.
Can I use CDS for temporary exports (e.g., goods for repair or exhibition)?
Yes. CDS handles all types of exports, including Temporary Admission and Outward Processing. These require specific "Procedure Codes" (DE 1/10) and "Additional Procedure Codes" (DE 1/11). FastFreight helps you select the correct codes to ensure you don’t pay unnecessary duties when the goods return to the UK.
How do I handle "Safety and Security" (EXS) declarations?
For most exports, the Safety and Security data is now combined into your standard CDS declaration (Declaration Category B1). You no longer need to file a separate Exit Summary Declaration (EXS) in most standard scenarios, as the required data elements are integrated into the main filing.
