What is a Customs Declaration (CN23) and how to complete it?

How to complete a CN23 Customs Declaration
CN23 Customs Declaration, picture by Jesse Ramirez

What is a CN23?

A Customs Declaration (CN23) is a customs document, used during international trade activities when goods are being transported overseas. It contains information about:
• The nature of the goods (including a detailed description and value)
• The country of origin.
• The Customs tariff number (if known)

Do You Need A Certificate of Origin too?

In some rare cases, because of the CN23 containing the “country of origin” of the goods you are sending overseas, you may need to ask your buyer (or the ultimate receiver of your goods/consignment) if they need a Certificate of Origin, which basically identifies the country where the goods/consignment originated.  You buyer may need it to authenticate that the goods you’re sending genuinely come from the country you’ve stated.  Don’t just presume and get a Certificate of Origin (C/O), first ask your buyer if they need it and only then go to the trouble and expense of getting a C/O.

When is a CN23 Customs Declaration used?

If your goods are being transported outside of the EU and have a value over £270 you must attach a signed and dated CN23. The document informs Customs of the contents of your consignment and helps them to check for banned or restricted items.

Why do I need a CN23 Customs Declaration?

You MUST have a Customs Declaration to send goods outside of the EU. If a declaration is not provided OR is completed incorrectly it can lead to delays or even seizure of the goods by Customs.

Where can I get a CN23?

You can get a CMR template from:
– Any Post Office branch
– Or download A free CN23 template here:   CN23 template

How do I complete a CN23?


Combined Trading Platform (CTP)

CTP Makes Trading Nationally and Internationally Simple