Exemptions

A customs form is not required on the following categories of mailpieces:

1. Nondutiable First–Class Mail International items that weigh less than 16 ounces.
2. Nondutiable First–Class Mail International items that weigh 16 ounces or more when they are tendered by a “known mailer.” A “known mailer” is a Postal Service business customer who tenders volume mailings through a business mail entry unit (BMEU) or other bulk mail acceptance location, completes a statement of mailing at the time of entry, pays postage through an advance deposit account, and utilizes a permit imprint as an indication of postage payment. International Surface Air Lift (ISAL) and International Priority Airmail (IPA) customers and federal, state, and local government entities are considered to be “known mailers” for this purpose.
3. Express Mail International shipments (to certain destination countries) that weigh less than 16 ounces and that contain documents, business papers, or commercial papers.

See IMM 123 and the Individual Country Listings for additional details, or consult your local Post Office.