US Import Duty Calculator
Estimate the duty on a shipment from what importers paid on the same product from the same country in the latest month the US Census Bureau has published (the 10-digit line when there is enough trade, else the 6-digit subheading), including Section 301 and 232 duties that were paid. Past imports, not the exact duty your shipment will owe. Takes about 15–35 seconds.
GET /v1/hts/{code} returns its base rate from the schedule, free with an API key; POST /v1/classify returns the code plus what importers paid (Census). Additional Chapter 99 duties (Section 301, 232 and others) are not computed by the API; for Section 301 status, check USITC's China Tariffs list at hts.usitc.gov. See the developer guide.
Try these examples
How the estimate is made
The calculator classifies your product, takes the Census figure for duty collected divided by dutiable value on imports from your country in the latest month Census has published (about two months behind), and multiplies your shipment value by it. That figure is for the 10-digit line when each of the last 3 months had at least $100,000 of dutiable trade in it, else for the 6-digit subheading. When Census has no recent month it uses the 12-month 6-digit average, and when Census has no usable figure, the schedule's MFN rate. The rows above the total are the rates paid on the entries under each Census rate provision that month; they are not added together.
| Reflected in the estimate | Not included |
|---|---|
| MFN duty actually paid on past imports | AD/CVD duties (product & company specific) |
| Section 301, Section 232 and other Chapter 99 duties actually paid | Merchandise Processing Fee (MPF) |
| Entries dutiable at a preferential rate (duty-free entries are not in the figure) | Harbor Maintenance Fee (HMF) |
| Split by Census rate provision | Customs broker fees |
| Shipping & insurance | |
| Whether your own shipment qualifies for an FTA, and tariff changes since the Census months |
How duties stack
US import duties aren't a single rate. They stack from multiple authorities. A product with a "Free" MFN rate can actually cost 25-50% in duties when imported from China. See the full explanation with examples.