FTZ basics

What is a Foreign-Trade Zone?

A Foreign-Trade Zone is a designated area inside the United States that customs treats, for duty purposes, as if it were outside the United States.

That one sentence carries the entire program. When goods arrive in an FTZ, no customs duties are owed — not yet. Duties are only paid if and when the goods leave the zone and enter U.S. commerce. Until then, they can be stored, inspected, repackaged, assembled, or manufactured into something else entirely.

The program was created by Congress in 1934 and is run by the Foreign-Trade Zones Board within the U.S. Department of Commerce. It is not a loophole and not a gray area — it is one of the oldest trade programs in the country, used today by some of the largest manufacturers and distributors in America.

Why companies use zones

Each of these has its own page with worked math — see all four benefits.

Duty deferral. You pay duties when goods leave the zone, not when they arrive. For a company importing steadily, that is a permanent improvement in cash flow — money that would sit with customs stays working in the business.

Duty reduction (the inverted tariff). If you manufacture in a zone, you can choose to pay the duty rate of the finished product instead of the rates on its imported parts. When parts are taxed higher than the finished good — common in automotive, electronics, and machinery — that choice saves real money on every unit.

Duty elimination on exports. Goods that enter a zone and are later exported never enter U.S. commerce, so no duty is ever paid on them. The same is true for goods that are scrapped, damaged, or destroyed in the zone.

Weekly entry. Instead of filing a customs entry for every shipment, zone users can file one entry per week. For high-volume importers, the savings on processing fees alone can justify the program.

Who the program is for

If your company imports goods and pays meaningful duties — as an importer, a distributor, a manufacturer using foreign parts, or an e-commerce operation handling returns — the program is worth a look. It is not only for giants: zones host operations from single-warehouse distributors to the largest auto plants in the country.

Not sure whether it applies to you? The Fit Assessment is nine questions and takes about 90 seconds. It gives you a straight answer, including an honest no, and points you at the zone that covers your county. No email required to see your result. Take the Fit Assessment →

There are zones covering counties in all 50 states. The first step is always the same: find the zone whose service area covers your location and talk to its administrator. Find your FTZ →

What a zone is not

A zone is not a way to avoid U.S. law — goods in zones remain under Customs and Border Protection oversight. It is not a bonded warehouse, which limits storage time and doesn’t allow manufacturing. And it is not automatic: using a zone means working with your local grantee and CBP to activate your site or space, a process that takes real planning. The companies that benefit most treat it as an operations decision, not a paperwork trick.

This page is general education, not customs, legal, or financial advice. Talk to your zone’s administrator and a licensed customs professional about your specific situation.