Foreign trade zones and bonded warehouses both let you bring goods into the country without paying duty on arrival. They are not interchangeable. The differences that matter are time limits, whether you can manufacture, and which date sets your duty rate — and one major FTZ advantage has been substantially closed by recent tariff actions.
General information, not legal advice, and US-specific. The tariff position changed several times in 2026 — verify current rules with CBP or a licensed broker before making a facility decision. Checked against the statutes, 19 CFR and 15 CFR in August 2026.
Side by side
| Bonded warehouse | Foreign trade zone | |
|---|---|---|
| Time limit | 5 years from date of importation | No statutory limit |
| Manufacturing | Only in a Class 6 warehouse, and solely for export | Yes — but only with prior FTZ Board authorisation |
| Duty rate set on | Date of withdrawal for consumption | Depends on the status elected |
| Duty on re-export | None | None |
| Merchandise processing fee | Per entry | Weekly entry — one filing per week |
The rate-date difference is the one to understand
Goods in a bonded warehouse are dutiable at the rates in effect when you withdraw them for consumption. If tariffs rise while your goods sit in the warehouse, you pay the higher rate. That is a genuine exposure in a volatile tariff environment, and it is the opposite of what many people assume.
In an FTZ, you elect a status on admission:
- Privileged foreign (PF) — classification and rate are fixed as at the date you elect it. This election is irrevocable; you cannot change your mind later, even if the goods are manufactured into something else.
- Non-privileged foreign (NPF) — the goods are classified as they leave the zone, in their finished condition.
The inverted tariff benefit, and why it mostly no longer applies
The classic reason to manufacture in an FTZ is the inverted tariff: when a finished product carries a lower duty rate than the components going into it, electing NPF lets you enter the finished article at its lower rate. You also do not pay duty on the labour, overhead or profit added inside the zone.
That benefit still exists in principle. In practice it has been closed for most tariffed goods, because every major recent tariff action compels privileged foreign admission — Section 301 on Chinese goods, the Section 232 actions on metals, vehicles and vehicle parts, anti-dumping and countervailing duty orders, and — most sweepingly — a Section 301 action effective 24 July 2026 covering 60 economies, which is far broader in country coverage than the China lists and is still largely absent from published commentary. Once admission is mandatorily PF, and PF is irrevocable, the NPF route that produces the inverted-tariff saving is permanently unavailable for those goods.
Worse for planning purposes: the proclamations expressly override the PF rate lock, providing that goods already admitted under privileged foreign status still attract the new duty on entry for consumption. The common advice to "admit goods to a zone before a tariff takes effect to lock in today''s rate" did not work for these actions.
What an FTZ genuinely still delivers
- Duty elimination on re-export. Goods that enter the zone and leave the country never attract duty. This is the strongest and most reliable benefit.
- Duty elimination on destruction. Scrap, defects and expired stock destroyed in the zone are not dutiable.
- Cash-flow deferral. Duty is paid on withdrawal into US commerce, not on arrival.
- Weekly entry. One entry per week instead of one per shipment, which reduces merchandise processing fees for high-frequency importers — though the saving is bounded, since the fee is capped per entry.
- No time pressure, unlike a bonded warehouse''s five-year limit.
Where a bonded warehouse still fits
Bonded warehousing is lighter to set up and does not require FTZ Board authorisation. It suits straightforward deferral: goods arriving before you need them, cash flow smoothing, and holding stock you may re-export.
The manufacturing restriction is the sharp limit. A Class 6 bonded warehouse may manufacture only for export — it cannot manufacture for US consumption. If your plan involves processing goods and selling them domestically, a bonded warehouse cannot do it and an FTZ can, subject to Board approval.
Choosing between them
- Re-exporting most of what you import? Either works; an FTZ scales better and has no clock.
- Manufacturing for the US market? FTZ, with Board authorisation. A bonded warehouse cannot.
- Just smoothing cash flow on goods you will sell domestically? A bonded warehouse is simpler — but remember the rate is set at withdrawal.
- Betting on the inverted tariff? Check first whether your goods face mandatory privileged foreign admission. For most currently tariffed products, that route is closed.
- High shipment frequency? Weigh FTZ weekly entry against your actual per-entry fees.
Deferral is one of three duty strategies and they combine: preferential origin reduces duty at entry, drawback refunds it afterwards, and zones and warehouses defer or eliminate it. Model all three against your actual flows before committing to a facility.
Find customs brokers and forwarders with zone experience, or post a request.
