MPF
Merchandise Processing Fee: a US customs fee of 0.3464% on most formal entries, with minimum and maximum caps.
The Merchandise Processing Fee (MPF) is charged by US Customs and Border Protection on most formal entries (goods valued over $2,500). The rate is 0.3464% of the customs value, with a minimum of $31.67 and a maximum of $614.35 per entry. MPF applies regardless of the tariff rate and is separate from duty. Goods entering under certain free trade agreements (like USMCA) may be exempt from MPF.