Free tool
Import Duty Calculator
Enter an HS code and origin to get the real US duty rate — base rate plus Section 301, 232 and 2025–26 tariffs — and the estimated duty on your shipment.
Rate → duty in one step
Enter the HTS code, origin and value; get the base rate and the estimated duty on the shipment, figures in mono.
The full tariff stack
See Section 301, 232 and reciprocal tariffs stacking on top of the base rate, each with its own cited source.
Never a fabricated rate
Rates come from the sourced dataset. Specific/compound or unverified rates are flagged, not invented.
How it works
Base rate plus everything that stacks on top
Every import starts from the HTS code's general (Column 1) rate — the Most-Favoured-Nation rate that applies to normal trade-relations partners. The real cost, though, is what stacks on top: Section 301 duties on China-origin goods, Section 232 on steel and aluminum, and the 2026 Section 122 10% baseline. This calculator resolves the code + origin against the sourced measures dataset and shows each layer with its citation.
Need the code first? Use the HS code finder. Want freight, insurance and CBP fees too? Continue to the landed cost calculator.
Questions
Import duty & tariffs, answered
Duty is the customs (transaction) value multiplied by the ad-valorem rate for the goods' HTS code. On top of the base Column 1 rate, additional tariffs — Section 301 (China), Section 232 (steel/aluminum) and 2025–26 IEEPA actions — can stack. This tool shows the base rate, each stacking measure with its source, and the estimated duty.
Get warned when a tariff on your codes moves
Save the codes and lanes you import and PortRobin alerts you the moment a rate changes — free to start.