Imported goods do not always owe duty on arrival. A bonded warehouse holds them under customs supervision with payment deferred until they enter commerce, which changes when cash leaves an importer's account.
Duty attaches at withdrawal, not arrival
Goods entered into a bonded facility are legally imported but not yet entered for consumption, and duty becomes payable when they are withdrawn for domestic sale.
Storage periods are limited by regulation, and goods may remain for a defined maximum before they must be withdrawn, exported or destroyed.
The facility operator posts a bond guaranteeing the government's revenue interest, which is the arrangement that gives the warehouse its name.
The benefit is timing rather than amount
Deferring duty does not reduce it. The same amount is owed, but later, which frees working capital during the interval.
For importers holding large seasonal inventory, that interval can span months and covers goods that have not yet generated any revenue.
The calculation is straightforward: warehouse costs are weighed against the cost of financing duty payments earlier than sales require.
Re-export avoids the duty entirely
Goods withdrawn for export from a bonded warehouse never enter domestic commerce, so no import duty is assessed on them.
This makes bonded storage useful for distribution hubs serving multiple countries, where the final destination is not known at the time of shipment.
It also supports consolidation, allowing shipments from several origins to be combined and redirected without duty consequences at the intermediate stop.
Permitted operations are limited inside the bond
Regulations restrict what may be done to goods in a bonded warehouse, generally permitting activities that preserve or repackage without changing the article itself.
Manufacturing that transforms goods is handled under separate programs, including foreign trade zones, which operate under different rules and offer different treatment.
Zones and warehouses are frequently confused, but their permitted activities, duty treatment and administrative requirements differ substantially.
Recordkeeping is the operator's core obligation
Customs supervision means every unit entering and leaving must be accounted for, with inventory systems subject to audit.
Discrepancies create liability under the bond, so operators run controls that are considerably tighter than ordinary commercial warehousing.
Because the rules governing eligibility, storage periods and permitted operations vary by country and change over time, importers rely on current customs guidance rather than general descriptions.