Foreign-Trade Zones: Duty Benefits and How to Apply

A foreign-trade zone (FTZ) is a secure area inside the United States that is legally treated as outside U.S. customs territory, so duties on goods admitted there are deferred, reduced, or eliminated until — and unless — the goods enter U.S. commerce. For an importer with high duty bills or large inventories, an FTZ can free up cash and cut costs. The catch is that getting and running one involves two federal agencies and a real compliance burden.

What a Foreign-Trade Zone Is

FTZs were created by the Foreign-Trade Zones Act of 1934 (19 U.S.C. §§ 81a–81u) to keep U.S. plants competitive with overseas production. Goods can be admitted to a zone, stored, handled, assembled, or manufactured, and then either exported or entered into U.S. commerce. Because the zone sits outside customs territory for duty purposes, the duty clock does not start when goods arrive — it starts only if and when the goods leave the zone for domestic consumption.

A common misconception is that CBP “grants” foreign-trade zones. It does not. Two agencies share the work, and keeping their roles straight matters when you apply.

Who Approves a Zone — Commerce vs. CBP

Zone status and operations are controlled by different bodies:

In other words, the FTZ Board authorizes a zone, but a site approved for zone status cannot be used until CBP activates it. The two regulatory frameworks — 15 CFR Part 400 for the Board and 19 CFR Part 146 for CBP — operate together, and an FTZ user has to satisfy both.

The Duty Benefits

The value of an FTZ comes from how it changes the timing and amount of duty:

• Duty deferral. No duties or excise taxes are paid on foreign merchandise until it leaves the zone for U.S. consumption. Goods that are re-exported never incur U.S. duty at all.
• Inverted-tariff relief. When production in the zone turns higher-duty components into a lower-duty finished product, the operator may elect to pay the duty rate of the finished product rather than the components — only available with FTZ Board production authority.
• No duty on waste, scrap, and yield loss. Duty is generally owed only on merchandise that actually enters U.S. commerce, so material lost in production is not dutiable.
• Weekly entry. Instead of filing a customs entry per shipment, a zone user can file one entry per week, which can substantially cut merchandise processing fees (MPF) for high-volume importers.
• Cash-flow and inventory flexibility. Goods can be held indefinitely, inspected, relabeled, repackaged, or destroyed in the zone without first clearing customs.

These benefits stack differently for every business, so the threshold question is always whether the savings outweigh the setup and compliance cost.

Types of FTZ Authority

Not every FTZ request is the same. The main categories are:

• General-purpose zones — multi-use sites, often at or near a port, available to multiple companies for warehousing and distribution.
• Subzones — a single company’s facility (often a factory) brought under an existing zone’s grant when general-purpose space will not work.
• Production authority — separate FTZ Board approval required before any manufacturing or substantial transformation can occur in a zone; this is what unlocks inverted-tariff relief.

Most modern applications run through the Alternative Site Framework (ASF), which lets a zone grantee designate “magnet” and “usage-driven” sites more quickly than the older site-by-site process.

How the Process Works

Establishing FTZ operations is a sequence, not a single filing:

1. Run the numbers first. Model your duty profile, re-export volume, and entry frequency to confirm the savings justify the cost. This is the step companies most often skip — and regret.
2. Apply to the FTZ Board for the zone, subzone, or production authority you need, with the supporting economic and operational information the Board requires under 15 CFR Part 400.
3. Get the site activated by CBP. After the Board grants status, CBP must activate the site before any goods are admitted, which includes approving the operator’s procedures and security.
4. Operate under both regimes. Admit goods on a CBP Form 214, maintain an FTZ inventory control and recordkeeping system, file the required entries, and submit the annual report to the FTZ Board.

Compliance Obligations

An active FTZ is a regulated operation. Operators must maintain an inventory control and recordkeeping system that tracks every item admitted and removed, reconcile inventory, file the FTZ Board’s annual report, and stand ready for CBP inspections and audits. Recordkeeping failures are the most common source of FTZ problems, because the duty benefits depend entirely on being able to prove what happened to each good in the zone. A bonded warehouse, by contrast, offers narrower duty deferral with a lighter footprint — see our guide to bonded warehouse applications to CBP and importing under bonded warehousing to compare.

Frequently Asked Questions

Does an FTZ eliminate duties entirely? Only for goods that are re-exported, destroyed, or lost in production. Goods that enter U.S. commerce still owe duty — the FTZ defers it and can lower the rate, but it does not erase it for domestic sales.

Who actually approves my zone — Commerce or CBP? Both, in sequence. The Foreign-Trade Zones Board (under the Commerce Department) grants zone status; CBP then activates the site and supervises operations. You need approval from each.

Can I manufacture in a foreign-trade zone? Yes, but only with separate production authority from the FTZ Board. That authority is also what allows inverted-tariff relief on the finished product.

Is an FTZ worth it for a small importer? It depends on duty volume, re-export share, and entry frequency. The compliance cost is real, so smaller importers should model the savings before applying — and consider whether a bonded warehouse covers their needs first.

Weighing a foreign-trade zone against other duty-management tools? Reidel Law Firm prepares flat-fee import/export compliance memos and advises importers on customs strategy with direct attorney access. Get an import compliance memo →