A Foreign-Trade Zone (FTZ) is a site in the United States that, for customs purposes, is treated as outside US commerce. Foreign and domestic merchandise can be moved into the zone — stored, manipulated, assembled or manufactured — without formal entry and without paying duties until the goods leave the zone into US consumption. If they are exported instead, no US duty is ever paid.

What FTZ status provides

  • Duty deferral: no duty until goods enter US commerce; duty is not owed on re-exported goods.
  • Inverted tariff relief: for manufactured goods, the importer can pay duty at the rate of the finished product rather than the imported components — decisive when component duty exceeds finished-product duty.
  • No duty on waste and scrap: materials consumed or scrapped in zone processing never enter the duty base.
  • Logistics flexibility: zone status supports just-in-time operations and indefinite storage of duty-suspended goods.

The framework is set by the Foreign-Trade Zones Act, with the customs side administered by CBP — CBP must activate the zone before merchandise is admitted, and its role, described in CBP's introduction to Foreign-Trade Zones, covers admission, handling and removal of merchandise.

How goods enter a zone

Admission is a formal, documented procedure: merchandise is admitted on CBP Form 214 (Application for Foreign Trade Zone Admission and/or Status Designation), with a status designation that fixes how the goods will be treated. The receiving, recording and reconciliation requirements are detailed in 19 CFR Part 146, which governs admission, manipulation and manufacture in the zone, and transfer back into customs territory. Inventory control and recordkeeping systems are the operational core: the zone operator must be able to trace merchandise from admission to disposition on demand.

Choosing the right structure

FTZs sit alongside bonded warehouses and other duty-deferral regimes, and the comparison matters commercially:

  • A bonded warehouse stores duty-suspended goods but manufacturing is restricted; an FTZ permits manufacturing with the inverted-tariff option.
  • FTZ status requires activation, an inventory system CBP approves, and ongoing compliance overhead — worth it for manufacturing and high-volume deferral, less so for occasional storage.

Compliance discipline

  • Status designations are binding: privileged foreign status locks in the duty rate at admission; choosing the right status at admission is a tax decision.
  • Weekly entry: FTZ operators can file a single weekly entry for goods moving to consumption, reducing entry-level cost dramatically.
  • Records face audit: annual summaries and spot checks mean the inventory system must reconcile to CBP's satisfaction continuously.

For importers with recurring volume, the FTZ decision is an arithmetic exercise: deferral cash-flow benefit plus inverted-tariff savings against activation and compliance cost. For manufacturers importing high-duty components, it is frequently the single largest legal duty reduction available in the US system.