How do U.S. import tariffs work for SMB importers?

U.S. import tariff cost starts with the HTS classification, then adds country- and program-specific treatment such as Section 301, Section 232, preference programs, or AD/CVD risk. The correct answer depends on product facts, origin, entry date, and official source updates.

Source: USITC / Federal Register / CBP source registryRefreshed May 8, 2026Official source Spotted an error?

Start with the HTS code

The Harmonized Tariff Schedule describes imported goods and assigns duty columns. A product description alone is not enough; material, use, construction, and composition all matter.

Add country and program overlays

China-origin goods can face Section 301 overlays. Steel and aluminum programs can involve Section 232. Preference programs such as USMCA require rules-of-origin eligibility.

Watch the effective date

A tariff notice can change treatment on a specific date. Saved-code alerts are useful because a code that looked safe last month can become expensive before the next shipment.

FAQ

Can this replace a customs broker?

No. It provides source-linked estimates and monitoring, not binding customs advice.

Why do rates differ by country?

Country of origin can trigger trade-remedy overlays or preference programs. Eligibility depends on rules and documents.