Customs Form
1. The envelope contains only documents
No Form Needed
2. The envelope contains goods (i.e., Dutiable Contents)
2.1. The content value is less than or equal to $400
PS Form 2976, Customs - CN 22 - Sender's Declaration (online form)
2.2. The content value is greater than $400
Items over $400 are not allowed to be mailed using this service. The item must be mailed using Global Express Guaranteed service, Priority Mail Express International service, or Priority Mail International service (other than Flat Rate Envelopes or Small Flat Rate Priced Boxes). Please choose another mailing service.
See 123.63 for additional information concerning "documents".
The surface area of the address side of the item to be mailed must be large enough to contain completely the applicable customs form, postage, and any applicable markings, endorsements, and extra service labels.