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Advanced Trade Finance & Special Customs Procedures

Tariff Engineering

Also known as: Tariff Classification Planning

Tariff engineering is the lawful practice of designing, manufacturing, or finishing a product so that it falls, at the time of importation, within a tariff classification that carries a lower duty rate, taking advantage of how the tariff schedule distinguishes goods by their condition as imported. Because duty depends on the article's characteristics when it crosses the border, legitimate changes to composition, form, or degree of assembly can reduce the applicable rate. The practice is legal when the product genuinely is what it is classified as and is not disguised or artificially altered solely to deceive, and it requires careful analysis of the schedule and supporting rulings.

The JFS takeLicensed customs broker · Filer 82G

Designing a product so that it classifies into a lower-duty provision. Entirely lawful — the courts have upheld it for over a century — provided the article as imported genuinely is what the classification describes. The line is condition as imported: engineering the goods is legitimate, and altering them after entry to reverse the change is not.

Where it matters for compliance

  • Classification is determined by the condition of the article as imported.
  • Finishing goods after entry is ordinary commerce. What fails is a condition that exists only for the tariff — a feature fitted to be removed, never intended for use. That is artifice, and the courts have said so.
  • A binding ruling is the responsible way to confirm the analysis before committing to production.

Related terms

Tariff ClassificationTariff classification is the disciplined process of assigning an imported product its correct code within the Harmonized System and the national tariff schedule, following the legally binding General Rules of Interpretation, the section and chapter notes, and, where helpful, the explanatory notes and prior rulings.Binding RulingA binding ruling is an official written determination issued by a customs authority, at a trader's request and before importation, that settles how a specific product will be classified, valued, or treated for origin purposes.Landed CostLanded cost is the complete, all-in cost of getting a product from the supplier to the buyer's door, combining the price of the goods with international freight, insurance, customs duties, trade-remedy duties, brokerage, port and handling charges, inland transport, and applicable taxes and fees.

Reviewed by a licensed customs broker. Definitions are general information, not legal or customs advice for a particular shipment. Duty rates, tariff programs and agency requirements change frequently.