Question 1

How are US import duties calculated?

Accepted Answer

US import duties are calculated based on the product's HTS (Harmonized Tariff Schedule) classification code and the country of origin. The base ad-valorem duty rate is applied to the customs value, then additional tariffs may apply — such as Section 301 tariffs on Chinese goods and Section 232 tariffs on steel and aluminum. Trade program exemptions like USMCA, GSP, and CAFTA-DR can reduce or eliminate duties for qualifying goods.

Question 2

What are Section 301 tariffs?

Accepted Answer

Section 301 tariffs are additional duties imposed on goods imported from China, ranging from 7.5% to 100% depending on the product category. These tariffs are applied on top of the standard HTS duty rate and were enacted to address unfair trade practices. The HTS Hero duty calculator automatically includes applicable Section 301 tariffs in its calculations.

Question 3

Is this US tariff calculator free?

Accepted Answer

Yes, the HTS Hero duty and tariff calculator is completely free. Enter any HTS code and select a country of origin to see the full duty breakdown including base rates, Section 122 / 301 / 232 tariffs, and trade program savings — no sign-up required.

Question 4

How do I find the tariff rate for imports from a specific country?

Accepted Answer

Enter the product's HTS code in the calculator, then select the country of origin from the dropdown. The calculator will show the applicable duty rate for that specific country, including any additional tariffs (like Section 301 for China) or preferential rates (like USMCA for Mexico and Canada). Different countries may qualify for different trade programs that reduce or eliminate duties.

US Import Duty Simulator