Goods arrive and are admitted to the zone on the admission document, with no duty paid and no formal entry filed. They can sit, be picked and packed, be labelled, and within a production authority, be manufactured. Duty attaches on entry for consumption, when goods leave the zone into US commerce. Goods exported from the zone never pay US duty at all, and goods destroyed under supervision avoid it too. For a seller whose stock might sell domestically, export, or not sell, that timing is real money.
Weekly entry then reduces the filing burden of the domestic side. Instead of an entry, and a processing fee, per shipment out of the zone, the zone user files one estimated weekly entry, then the actual entry summary for the week. High volume shippers feel this in two places: brokerage lines and the per entry fee cap, which a single weekly entry hits once.
On admission, foreign status merchandise must be elected as privileged foreign status, which locks classification and duty rate at admission, or non privileged, which lets the rate follow the article as it enters commerce. That election is the core FTZ strategy call: a manufacturer wants the finished good's lower rate where one exists, an inverted tariff, while a distributor of finished goods may gain nothing from the choice and everything from the cash flow timing and the weekly fee saving.
The election is hard to unwind and it interacts with Section 232 and 301 duties in ways that changed as those programmes evolved. Model it with your broker and zone operator on your actual codes and rates, stacked, before admission. An FTZ does not erase trade remedy duties by magic, and assuming it does is the most expensive sentence in this niche.
CBP lets goods sit outside entry because the zone can account for every unit: admissions, manipulations, production, shipments, and destruction, all reconciled in an inventory system the zone operator stands behind. Annual reconciliation and spot checks are routine. A business whose warehouse records are approximate will fail here, and the failure is not a fine first. It is loss of the procedure the saving depends on.
Weigh that honestly against the benefit. A low volume importer with simple goods may save less in fees and duty timing than the zone's operator fees and systems cost. FTZ economics reward volume, duty rate spread, and export share. Run your own numbers: entries per week, average duty, export percentage. The mechanism is public. The answer is arithmetic.
The operator files the weekly estimate before the week's shipments move, then the entry summary with actual quantities and values after the week closes, paying duty and fees on that summary. Discipline about cut offs matters: a shipment that misses the week belongs to the next filing, and sloppy cut offs produce the reconciliation gaps auditors love. Treat the zone boundary in your warehouse system as a real border, because legally it is one.
Confirm current status with a licensed customs broker and a zone operator before committing. Activation, production authority, and the treatment of trade remedy duties all need advice on your facts, not a summary.
No. It defers duty until goods enter US commerce, avoids it on exports and supervised destruction, and in manufacturing cases can apply the finished article's rate where that is lower. Domestic sales still pay duty, once, at entry.
It is permission for a zone user to file one entry covering a full week of shipments into US commerce instead of an entry per shipment, which cuts brokerage work and caps the per entry processing fee once per week.
Low volume importers with low duty rates and no export share usually find operator fees and inventory control costs exceed the deferral and fee savings. The honest test is your own entry count and duty spend.
They can benefit from deferral, weekly entry, and export relief, but trade remedy duties generally still apply on entry for consumption. Do not model a zone as a way to make 301 or 232 duties disappear.