Foreign Trade Zone (FTZ)

A Foreign Trade Zone (FTZ) is a designated area within the United States where goods can be imported, stored, handled, manufactured, or reconfigured without being subject to formal customs entry procedures or duty payment until the goods leave the zone and enter U.S. commerce. Think of it as a legally defined pocket of “not quite imported yet” territory sitting inside U.S. borders. The goods are physically in the United States, but for customs and duty purposes, they have not officially entered the country.

How FTZs Work

When goods enter an FTZ, they are “admitted” rather than “entered.” No duties or taxes are assessed at admission. The goods can sit in the zone indefinitely without triggering duty obligations. Duties are only assessed when the goods are “entered” into U.S. commerce, meaning they leave the zone and are consumed domestically. If the goods are re-exported (shipped to another country without entering U.S. commerce), no duties are ever paid.

There are approximately 195 FTZ projects authorized in the United States, with over 400 active subzones. They are located at or near ports of entry and operate under the supervision of U.S. Customs and Border Protection (CBP). The Foreign-Trade Zones Board (a joint function of the Department of Commerce and the Treasury Department) grants FTZ status.

Duty Deferral

The most straightforward FTZ benefit is duty deferral. An importer can bring goods into a zone, store them for months, and only pay duties when the goods are shipped to a domestic customer. This improves cash flow. Instead of paying $50,000 in duties when a container arrives at the port, the importer defers that payment until the goods actually sell. For companies carrying large import inventories, the working capital savings can be substantial.

Duty Elimination on Re-Exports

Goods that enter an FTZ and are later exported to another country never incur U.S. duties. A distribution center in an FTZ might receive electronics from China, hold them in inventory, and ship some units to Canada and some to domestic U.S. customers. Only the units entering U.S. commerce owe duties. The units going to Canada are re-exported duty-free. Without the FTZ, the importer would pay duties on the full container at entry and then apply for a duty drawback refund on the re-exported portion, a process that takes months.

Inverted Tariff Benefits

Manufacturers in FTZs benefit from inverted tariffs. If the duty rate on a finished product is lower than the duty rate on its components, the manufacturer can import components into the FTZ, assemble them into the finished product, and then enter the finished product into U.S. commerce at the lower finished-goods duty rate. For example, a company assembling electronic devices might import circuit boards at a 4% duty rate and plastic housings at a 6% rate. If the assembled device carries a 2% duty rate, the manufacturer saves by electing the finished-goods rate at the time of entry.

FTZ Usage Costs

Operating within an FTZ involves costs beyond the standard warehousing. There are activation fees ($5,000 to $25,000 depending on the zone), annual fees ($1,000 to $10,000), and compliance costs related to the additional recordkeeping and inventory control requirements that CBP mandates for FTZ operators. The zone operator must maintain a detailed inventory system that tracks every item admitted to and withdrawn from the zone, with regular reconciliation against CBP records.

FTZs and FBA Sellers

Most FBA sellers do not use FTZs directly because the administrative overhead and cost only make sense at higher import volumes. Sellers importing $500,000 or more per year in dutiable goods, particularly those with re-export activity or inverted tariff opportunities, should evaluate FTZ benefits with their customs broker. For sellers at that volume level, the duty deferral and cash flow improvement can offset the FTZ operating costs several times over. Some prep centers near major ports operate within or adjacent to FTZ facilities, allowing importers to combine FTZ duty benefits with prep and fulfillment services in a single location.