Foreign Trade Zones: How FTZs Can Reduce Your Import Costs

What Are Foreign Trade Zones?

Foreign Trade Zones (FTZs) are designated areas within the United States that are legally considered outside the customs territory of the US for duty-payment purposes. Established under the Foreign Trade Zones Act of 1934 and regulated by the Foreign-Trade Zones Board (a joint operation of the Department of Commerce and CBP), FTZs allow importers to bring foreign merchandise into the zone without immediately paying customs duties, federal excise taxes, or state and local ad valorem taxes on the goods.

There are currently over 190 general-purpose FTZ projects in the United States, with more than 400 active subzones. These zones are located near every major port of entry and serve industries ranging from automotive manufacturing and electronics assembly to petroleum refining and pharmaceutical distribution. Despite their widespread availability, many small and mid-size importers fail to take advantage of FTZs simply because they do not understand how the program works or whether it applies to their operations.

Types of Foreign Trade Zones

FTZs come in two main flavors: general-purpose zones and subzones. A general-purpose zone is a multi-use site typically located near a port, airport, or major transportation hub. Multiple companies can operate within a general-purpose zone, sharing the infrastructure and administrative oversight. These zones are ideal for warehousing, distribution, and light assembly operations. A subzone, by contrast, is a single-use site established at a specific company's manufacturing or processing facility. Subzones are granted when a company's operations cannot feasibly be located within an existing general-purpose zone. Major manufacturers like BMW, Toyota, and Samsung operate subzones across the US for large-scale production.

Key Financial Benefits of FTZ Operations

• Duty deferral: Customs duties are not owed until goods leave the zone and enter US commerce. If goods are stored for months before sale, the cash-flow benefit is substantial — your capital stays in your business instead of sitting with CBP.
• Duty elimination on exports: If imported goods are subsequently re-exported from the FTZ, no US customs duties are ever paid. This is a major advantage for companies that import components, assemble products, and ship finished goods to foreign markets.
• Inverted tariff relief: When the duty rate on a finished product is lower than the duty rate on its imported components, FTZ manufacturing allows you to pay the lower finished-goods rate. For example, if you import components at 8% duty and the assembled product carries a 3% rate, you save 5% by electing the finished-goods classification.
• Weekly entry: Instead of filing a separate customs entry for every shipment, FTZ operators can file a single weekly entry covering all goods that entered US commerce during that week. This dramatically reduces brokerage fees, entry processing costs, and administrative burden.
• No duty on waste and scrap: If imported materials are damaged, destroyed, or scrapped within the zone, no duty is owed on those materials. In manufacturing environments with significant material loss, this benefit alone can justify FTZ operations.
• State and local tax benefits: Many states exempt FTZ inventory from ad valorem (property) taxes on foreign goods stored in the zone. Depending on your inventory levels and state tax rates, this can represent savings of hundreds of thousands of dollars annually.

Is an FTZ Right for Your Business?

FTZ operations make the most financial sense when one or more of the following conditions apply: you import large volumes of goods that sit in inventory before entering US commerce; you manufacture or assemble products using imported components with higher duty rates than the finished product; a significant portion of your imported goods are re-exported; you face high ad valorem taxes on stored inventory in your state; or you file a high volume of individual customs entries and would benefit from weekly consolidated entry.

As a general rule of thumb, companies that import at least $5 million annually in dutiable goods should conduct an FTZ cost-benefit analysis. The annual cost of maintaining FTZ status — including zone operator fees, CBP oversight costs, and compliance administration — typically ranges from $50,000 to $200,000 depending on the complexity of operations. If your potential duty savings exceed these costs by a comfortable margin, an FTZ is worth pursuing.

How to Apply for FTZ Status

The application process depends on whether you are seeking to use an existing general-purpose zone or establish a new subzone. For a general-purpose zone, you apply directly to the zone's grantee (typically a port authority, economic development agency, or similar entity) to become an activated user. The grantee handles the relationship with CBP and the FTZ Board. For a subzone, you must submit an application through the local grantee to the Foreign-Trade Zones Board, which reviews the application and makes a determination — a process that typically takes 10 to 12 months.

1. Identify the nearest general-purpose FTZ using the FTZ Board's online locator.
2. Contact the grantee to discuss your operational needs and activation requirements.
3. Prepare a cost-benefit analysis demonstrating the financial justification for FTZ operations.
4. Apply for activation (general-purpose) or subzone designation through the grantee.
5. Establish FTZ compliance procedures including inventory control, zone security, and CBP reporting.
6. Complete CBP activation inspection and begin zone operations.

FTZ Interaction with Other Duty Programs

FTZs interact with other trade preference programs in important ways. Goods eligible for preferential duty treatment under USMCA, GSP, or other free trade agreements can still claim those preferences when admitted to an FTZ. However, FTZ benefits cannot be combined with drawback — you must choose one or the other for a given transaction. Section 301 and Section 232 tariffs apply to goods entering US commerce from an FTZ, but the duty deferral benefit still applies, and inverted tariff relief can sometimes offset a portion of these additional duties.

“Foreign Trade Zones remain one of the most underutilized tools in the US trade policy toolkit. Companies that take the time to understand and implement FTZ operations consistently find that the savings far exceed the administrative investment.”

— National Association of Foreign-Trade Zones