When goods pass through a middleman before reaching the importer, duty is usually charged on the price the importer paid. A valid first sale structure lets duty rest on the earlier factory price instead. This guide explains the conditions that make it hold up.
Three things must be true and documented. The goods must be clearly destined for the importing country at the time of the first sale. The first sale must be a genuine sale between independent parties, at arm's length. And the importer must be able to produce the paper trail: factory invoices, middleman invoices, and payment records that reconcile with each other and with the entries.
The structure collapses when the middleman is a fiction. If the supposed seller never takes title, never bears risk, and functions as a pure agent, customs will treat the arrangement as one sale and value accordingly. Real first sale structures have real middlemen performing real functions, which is why the saving survives audits while paper structures do not.
The saving equals the duty rate applied to the middleman's markup, on every entry, for as long as the structure runs. On high duty categories with meaningful markups, that compounds into one of the largest legitimate duty reductions available. It costs nothing per shipment once established, which is why established importers treat it as infrastructure rather than a project.
The same structure can interact with other rules. Transfer pricing, income tax treatment, and the customs value in the exporting country all touch the same invoices. Importers should build first sale with tax advisers in the room, so a customs saving does not create an income tax problem wearing different clothes.
Documentation discipline is the programme. Purchase orders referencing the right parties, factory invoices issued to the middleman, payment flows matching invoices, and shipping documents consistent with the story must all agree, per shipment, every time. A single sloppy season of paperwork gives an auditor the thread to pull.
Importer teams need training as much as templates. The person who asks the factory to invoice the importer directly for convenience, or who nets payments across parties, can quietly invalidate entries they never knew depended on the structure. A short internal note explaining what must never change is cheap insurance.
The importer claims the lower value, so the importer carries the proof. Customs can request the full first sale file for sampled entries years later, under normal recordkeeping horizons. Keeping a per shipment first sale packet, assembled at entry time rather than reconstructed later, is the practice that separates calm audits from expensive ones.
Where the facts are borderline, a ruling or specialist opinion before claiming is money well spent. First sale is a well established principle, not a loophole, and importers who document it as carefully as they document classification have little to fear from scrutiny.
Keep reading: Bonded warehouses: deferring duty until goods actually sell, Are freight and insurance added to customs value on imports?, and How does duty free treatment for American goods returned actually work? cover the nearby cases in this series.
Where a factory sells goods to a middleman who resells them to the importer, and the legal conditions are met and documented, customs duty can be assessed on the factory to middleman price instead of the higher middleman to importer price.
A middleman who never truly buys and resells, goods not clearly destined for the importing country at the first sale, pricing that is not at arm's length, or a paper trail where invoices, payments, and entries do not reconcile. The importer carries the burden of proving each element.
The duty rate applied to the middleman's markup, repeated on every shipment. On high duty goods with a substantial markup, it is among the largest lawful duty savings available, and it recurs automatically once the structure is in place.
A per shipment packet: factory invoice to the middleman, middleman invoice to the importer, matching payment records, purchase orders, and shipping documents, retained for the normal five year customs recordkeeping period.