A Foreign Trade Zone (FTZ) is a secure area inside the United States that, for customs purposes, is treated as if it sits outside U.S. commerce. Goods can enter an FTZ, be stored, repackaged, assembled, or re-exported without the importer paying duty until (and unless) the merchandise leaves the zone for U.S. consumption. For a Miami importer moving freight through PortMiami or Port Everglades, that timing difference can free up significant working capital.
How a Foreign Trade Zone works
FTZs are authorized by the U.S. Foreign-Trade Zones Board and supervised by U.S. Customs and Border Protection (CBP). When a container is admitted into a zone, the duty clock effectively pauses. The importer files entry and pays duties only when goods are withdrawn into U.S. commerce. If the goods are exported directly from the zone, no U.S. duty is owed at all.
South Florida is a natural fit for FTZ activity because so much cargo arriving at PortMiami is destined for re-export to Latin America and the Caribbean. Miami-Dade County operates FTZ No. 281, and other zones cover Broward and Palm Beach. A 3PL with bonded, zone-eligible space can hold your freight inside that framework.
The main benefits of using an FTZ
Duty deferral
You pay duty when goods leave the zone, not when they arrive. Inventory that sits for weeks or months isn’t tying up cash in prepaid duties.
Duty elimination on re-exports
Goods that come in and go back out to another country never enter U.S. commerce, so no U.S. import duty applies. This is the single biggest reason Miami’s re-export economy leans on zones.
Inverted tariff relief
If a finished product carries a lower duty rate than its imported components, an FTZ may let you pay the lower finished-goods rate after assembly inside the zone.
Weekly entry savings
Instead of filing (and paying the merchandise processing fee on) every shipment, qualifying zone users can file a single weekly entry, reducing brokerage and MPF costs.
FTZ vs. a bonded warehouse
Both defer duty, but they are not the same tool. A customs bonded warehouse generally allows storage and limited manipulation for up to five years, with duty due on withdrawal. An FTZ allows broader activity — manufacturing, assembly, inspection, kitting — has no strict time limit, and offers the weekly-entry and inverted-tariff advantages a bonded warehouse does not. Many South Florida importers use bonded storage for straightforward hold-and-release flows and an FTZ when value-added work or heavy re-export volume is involved.
Is an FTZ right for your freight?
Zones tend to pay off when you import in high volume, hold inventory before sale, re-export a meaningful share of what you bring in, or do light manufacturing and assembly. For a small importer with fast turns and few re-exports, the administrative overhead may outweigh the savings. The practical move is to model your annual duty spend and storage profile before committing.
Go Freight pairs zone-eligible, CBP-supervised storage with asset-based drayage so your container moves from the terminal into compliant space without a hand-off to an outside trucker. Because we run our own trucks and chassis pool, we control the gate move, the transload, and the warehouse under one roof. See how our AI-powered warehousing connects to the port.
Frequently asked questions
Do I still pay duty on goods in a Foreign Trade Zone?
Not while they remain in the zone. Duty is assessed only when merchandise is withdrawn into U.S. commerce. If the goods are re-exported, no U.S. import duty is owed.
How long can goods stay in an FTZ?
There is no statutory time limit. Merchandise can remain in a zone indefinitely, which is a key difference from a bonded warehouse’s typical five-year cap.
Can I do manufacturing or assembly inside an FTZ?
Yes, with proper authorization. Production activity must be approved by the FTZ Board, but once approved, assembly, kitting, and light manufacturing are permitted — one of the zone’s biggest advantages over bonded storage.
Move and store smarter through PortMiami
Whether you need zone-eligible storage, bonded space, or straight drayage-to-warehouse, Go Freight handles it asset-based, with no double brokering. Request a quote or call (786) 445-0150 to map the right setup for your freight.