It depends on each part: its tariff code, its material and whether it qualifies under USMCA. Before you pay for your order, the customs and duties step shows you an estimate of what customs will charge on delivery.
Parts made in Mexico that qualify as originating under USMCA can enter the United States without the general duty. That is why every shipment to the United States leaves with its USMCA certification of origin.
Some steel, aluminum and certain automotive parts pay additional duties even if they qualify under USMCA. If your part is one of them, the estimate already includes them.
Prototypes can be treated differently. For U.S. customs, a prototype is a part imported only for development, testing or evaluation, in limited quantities and not for sale or for incorporation into a product that will be sold. These parts may qualify to enter duty-free, and your importer claims it at entry.
To ship to the United States we ask for each part's tariff code, the 10-digit HTS code customs uses to classify it. If you do not know it, we suggest options from the official tariff schedule, and we review the classification of every part before shipping.
The final amount is determined by customs when it reviews your shipment. If you have questions about the classification of your parts, consult your customs broker.
