Import Regulations, Trade Intermediaries, and Services
All goods imported into the United States are subject to duty or duty free entry, depending on their classification under the applicable tariff schedule and their country of origin. For dutiable products, three different methods are used to levy tariffs:
1. Ad valorem duty: The duty levied is a percentage of the value of the imported product. It is the type of duty most often applied. An example would be a 2 percent ad valorem on imports of leather shoes. The duty obligation is proportional to the value of the dutiable cargo and bears no relation to the quantity imported.