Further details on CDS will be published once it is on general release, accessible and proven to be stable enough to cope with the transition from CHIEF.

CDS Exports (published 25/08/2023)

We will be conducting tests on the new CDS export system over the coming months with the intention of transitioning full as soon as possible.   HMRC have advised that the transition will be phased in through to their new deadline of March 2024 so we expect a dual running of CHIEF and CDS between November 2023 & March 2024.  It’s our intention to transition all clients to CDS exports as soon as possible once available.

Phased approach to CDS export migration announced – GOV.UK (


CDS Imports transition is now fully complete

Please contact us directly regarding transition to CDS, below are some publications by HMRC and our trade body BIFA to make the transition from CHIEF to CDS seamless.


CDS Overview – Preparing to move to Customs Declaration Service

CDS Data Requirements Form



CDS – The CHIEF Replacement Service

Important Update 04/08/2021 – HMRC have now announced that CHIEF will be withdrawn in two stages – 

30th September 2022 – The ability to make import declarations on CHIEF will end.

31st March 2023 – The ability to make export declarations on CHIEF and the National Export System (NES) will end

Update from BIFA 14/02/2020

BIFA have published the following documents (Please note this is not a guidebook)

Guidance on the Customs Declaration Service

Additional Data Requirements for CDS

Additional Data Requirements Guidance (to be read in conjunction with above form)


Here are some other links which may assist :

What is CDS and why is it replacing CHIEF?

UK Trade Tariff Volume 3 (CDS Imports)