Arizona is the third largest state in imports to Mexico. Since 1994 trade with Mexico has created 8300 jobs in Arizona, mostly in Tucson. An ad valorem rate is based on a percentage of the imported good's value. A rate based on the weight, volume, or unit quantity is a specific rate. Compound rates include a specific amount of money in addition to the ad valorem rate.
Most countries primarily use the ad valorem rate.
The Harmonized Tariff System Classification is a standardized numerical method of classifying traded products. The identifying number assigned to each product is used by customs officials around the world to determine the duties taxes and regulations of that product. Schedule B numbers can be obtained on the U.S. Customs website . This system reduces the processing time it takes to obtain a permit. It also provides for the de-regulation of procedures on products subject to permit requirements.