Free trade zones and bonded warehouses explained
How FTZs work, who uses them, and the difference between a free zone, a bonded warehouse, and a special economic zone. Worked examples from Jebel Ali, Shannon, Colón, and US FTZs.
title: "Free trade zones and bonded warehouses explained" description: "How FTZs work, who uses them, and the difference between a free zone, a bonded warehouse, and a special economic zone. Worked examples from Jebel Ali, Shannon, Colón, and US FTZs." category: "commercial-importing" estimatedReadMinutes: 9 lastUpdated: "2026-05-13"
Free Trade Zones (FTZs), free zones, special economic zones (SEZs), and bonded warehouses are tools to defer or eliminate customs duty + VAT on goods that move through them. Each has slightly different mechanics — but the common theme is: goods inside the zone are not yet "imported" for customs purposes, so duty and tax obligations are suspended.
The four flavours
1. Free Trade Zone (FTZ). Goods enter the zone duty-free + tax-free. Inside the zone, they can be stored, manipulated (cleaned, sorted, repackaged), and re-exported without triggering customs entry. Examples: Jebel Ali Free Zone (JAFZA) in Dubai, Colón Free Zone, US Foreign-Trade Zones program (260+ locations).
2. Special Economic Zone (SEZ). Like an FTZ but with deeper tax incentives — corporate income-tax holidays (5-15 years), exemption from withholding tax, simplified labour laws, sector-specific concessions. Examples: Shanghai Pilot FTZ, PEZA zones, India SEZ Act 2005 zones.
3. Bonded warehouse. A customs-licensed facility where imported goods can be stored without paying duty for up to 5 years (typical limit; varies by jurisdiction). Goods leave bond on either: (a) duty paid + released to local market, or (b) re-export duty-free. Used for: wine + spirits storage, luxury-watch inventory, aircraft-spare-parts logistics.
4. Manufacturing zones / processing zones. Specialised SEZs where the zone permits value-added manufacturing — assembly, finishing, labelling — with the resulting product re-exported under preferential tariff treatment.
Worked example: US Foreign-Trade Zone
A US company imports plastic resin pellets from Saudi Arabia (HS 3902.10), normally subject to 6.5% duty. They want to mould the resin into car parts and re-export 70% to Mexico under USMCA preferential tariff.
Without FTZ: pay 6.5% on resin → mould parts → file refund claim on re-exported portion (slow + costly).
With FTZ: receive resin into US FTZ duty-free. Mould parts inside the zone. The 30% staying in US clears with duty on the finished classification (which may be lower than resin's 6.5% under "inverted-duty" rules). The 70% re-exported never paid duty in the first place. Cash-flow benefit + lower effective duty.
Worked example: Jebel Ali (JAFZA)
A Hong Kong electronics distributor wants to sell into the Middle East + Africa. Setting up a Dubai entity in JAFZA gets them:
- 100% foreign ownership (vs. mainland UAE 49% / 51% local-partner rule for many sectors).
- 0% corporate tax for 50 years (now subject to new UAE Corporate Tax rules — JAFZA renegotiating).
- Goods enter zone duty-free; sales into UAE mainland trigger 5% customs + 5% VAT; sales to other GCC/MENA destinations stay duty-free.
This is why JAFZA hosts 9,000+ companies — including major Chinese electronics, US automotive parts, and European pharmaceutical distributors.
Worked example: Shannon Free Zone (Ireland)
The world's first free zone (1959). Originally built to support transatlantic-flight passenger trade through Shannon Airport. Today: 12.5% corporate tax (vs. UK / Western Europe averaging 19-30%) + EU-Single-Market access + English-speaking workforce + skilled aviation cluster. Major occupants: GE Aviation, Intel, Boston Scientific.
When you should use an FTZ
- Significant inventory holding (over USD 1M).
- Substantial re-export percentage (typically 30%+ re-exported).
- Manufacturing with imported inputs.
- Storage of high-tax goods (alcohol, tobacco, perfume).
- Strategic position between supply origin + customer.
When you should NOT use an FTZ
- Low volumes / short-stay inventory: filing complexity outweighs duty savings.
- Direct-to-consumer e-commerce with high turnover: standard de-minimis (Section 321 / IOSS) is simpler.
- Goods consumed at destination: no re-export, no FTZ benefit.
Documentation
FTZ filings typically use CBP Form 214 (US) or destination-equivalent. The zone operator handles most paperwork; the importer signs as principal.
For a directory of FTZs by country, see /ftz.