How are US import duties from Mexico calculated?

Start with the base MFN rate for the HTS code, then stack the trade-remedy tariffs that apply to Mexico. From Mexico, USMCA-qualifying goods may be duty-free with a valid claim; otherwise the base rate and reciprocal baseline apply, plus Section 232 on metals. The calculator does the stacking for your exact code and value.

Is there a free-trade agreement with Mexico?

Yes — USMCA. Qualifying goods can enter duty-free with a valid origin claim and documentation.

Mexico import duties

Mexico is a USMCA partner, so qualifying goods can enter at preferential rates — but only with a valid USMCA claim and origin documentation. Where USMCA does not apply, the base MFN rate and the reciprocal baseline can apply, and Section 232 reaches Mexican steel, aluminum and copper articles.

USMCA preferenceReciprocal baselineSection 232 (metals)