Customs Single Window/CERTEX


The Customs Single Window (SW)/CERTEX is designed to provide a more efficient release of certain goods at the European Union (EU) border. This is achieved by the sharing of data electronically between government agencies.

In Ireland, the relevant government agencies are:

  • Revenue
  • the Department of Agriculture, Food and the Marine (DAFM)
  • the Health Service Executive (HSE)
  • and
  • the Environmental Protection Agency (EPA). 

The Customs SW/CERTEX is in operation in Ireland since 2015. The latest phase of the SW was implemented in October 2022. This phase introduced stricter application of business rules on import declarations.


Ireland is now preparing for the next phase of the SW. The next phase of the SW will be implemented on 11 January 2023.

Who is affected by the next phase?

Those businesses who import goods that require any of the following certificates: 

  • Common Health Entry Document (CHED)
  • Certificate of Inspection for Organic Conformity (COI). 

What will change under the SW and when? 

The next phase on the 11 January 2023 will introduce electronic validation for all CHED and COI certificates declared on an import declaration. If a declarant attempts to submit a customs declaration with an invalid certificate number from this date for any CHED or COI, the declaration will be rejected.   

A further phase is scheduled to go live in February 2023. This will involve matching of the following data declared on the customs import declaration, and the related CHED/COI:

  • Certificate reference number
  • CN code (up to the first 8 digits)
  • Net mass or supplementary units. 

Further details on how the system will work is available in Customs Single Window/CERTEX.

What does your business need to do?

Your business needs to take steps to ensure that the data on the customs import declaration matches exactly what is on the relevant CHED/COI. This will require communication between the party completing the customs declaration and the party completing the relevant CHED/COI.  A data mismatch may cause a significant delay in the clearance of your goods. 


This page will be updated with additional information as we approach the implementation date for each phase of the SW.   

Further information

If you have specific questions, you can contact any of the following emails with ‘Single Window/CERTEX’ included in the subject line: