Customs declaration forms

You need to fill out a customs declaration form for all parcels, International Courier letters and International Express letters you mail overseas.

Choose from 3 options to fill out your form.

Complete the correct customs form

Check which customs form you need to complete for your international parcel or letter.

Forms
Delivery service Forms to complete

International Courier

Parcels up to 20kg

Letters up to 500g

Forms to complete

CN23 customs form

Available at participating outlets (PDF 832kB)

International Express

Parcels up to 5kg

Letters up to 500g

Forms to complete

CN23 customs form

International Standard

Parcels up to 5kg

Forms to complete

CN23 customs form

International Economy Air

Parcels up to 2kg
Letters - not required

Forms to complete

CN22 or CN23 customs form

International Economy Sea Mail

Parcels from 2kg to 20kg

Forms to complete

CN23 customs form

International Post Registered

Forms to complete

Not required

Size and weight guidelines

Check our guide to confirm if your item is a parcel, small letter, large letter or greeting card/postcard. If your letter is larger than our maximum size and weight, it will be considered a parcel and require a customs form.

Guide to completing your customs declaration

Providing clear and accurate information on your International shipment helps your items clear destination customs. Without this information, your shipment may be held up or returned to you, resulting in unnecessary delays and a poor delivery experience for the recipient of your items.

Check out the video below to learn how to prepare an online declaration.

Important information for international shipping

1 MyPost Business savings bands are based on your spend on products and services over specific periods using your MyPost Business account, with certain exceptions. Savings are calculated on standard postage rates (PDF 642kB), and apply to MyPost Business products, with certain exceptions. For more information, read the MyPost Business Postage Rates Guide (PDF) for the spend requirements of each savings band and for a full list of MyPost Business products, including the lists of exceptions. ​