Tariff Simulator: Compare U.S. Duty by Country and Date

Tariff simulator

A tariff simulator runs what-if scenarios on import duty: the same product from different countries, entered on different dates, or with and without a trade agreement claim. It answers questions like “what would we save sourcing from Vietnam instead of China?” or “what did this entry owe before the last tariff change?”

Enter an HTS code and up to three origins. Each scenario opens in Trade Terminal with the full line-by-line result, using the schedule in force on its entry date.

Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.

Ready-made scenarios

Reshoring from China to Vietnam

Lithium-ion batteries (other than EV packs or storage systems), $50,000 by ocean. HTS 8507.60.00.90.

China, Mexico or India for furniture

Wooden bedroom furniture, $30,000. HTS 9403.50.90.80.

Apparel: China vs. Bangladesh vs. Honduras

Cotton T-shirts, $25,000. HTS 6109.10.00.12.

What you can change in a scenario

Country of origin: changes which Chapter 99 tariffs apply and which trade agreements are available.
Entry date: changes the revision of the schedule, back to 2020, including tariffs that started or ended.
Value and mode: drive ad valorem duties, the MPF floor and cap, and whether the Harbor Maintenance Fee applies.
Claims: free trade agreement rates, Section 301 exclusions, metal-content and end-use provisions, ticked on or off.

Using simulations for sourcing decisions

Duty is often the biggest variable between two otherwise similar suppliers. A simulation shows the difference per shipment and per unit, so you can weigh it against price, lead time and freight. Keep in mind that tariffs change: check the current schedule before committing, and rerun the scenario on the expected entry date.

For a single shipment, the duty calculator is quicker. For the method behind the numbers, read how to estimate import duty.

Frequently asked questions

Can I compare tariffs for different countries of origin?

Yes. Enter one HTS code and up to three countries. Each scenario shows the base duty, the Chapter 99 tariffs that apply to that origin, any trade agreement rate you can claim, and the fees.

Can I see what a tariff was on a past date?

Yes. Pick any entry date back to 2020 and the simulator uses the revision of the Harmonized Tariff Schedule in force on that date, including the Chapter 99 provisions active then. This is useful for refund claims, post-summary corrections and audit checks.

Does changing the country of origin on paper change the tariff?

No. Origin is where the goods were last substantially transformed. Routing goods through another country without substantial transformation does not change their origin, and misdeclaring origin is a customs violation.