Tariff Calculator (2026): Free U.S. Import Tariffs

Q: Which tariffs does the calculator include?

Base duty from the HTS, Section 232 tariffs, Section 301 tariffs, Section 201 safeguard tariffs and other Chapter 99 provisions, free trade agreement claims such as USMCA, the Merchandise Processing Fee and the Harbor Maintenance Fee. Antidumping and countervailing duty cases are flagged but not added to the total, because their rates depend on the producer.

Tariff calculator

A tariff calculator works out the import duties owed on goods entering the United States. Enter the product's HTS code, country of origin, customs value and entry date. This one returns the base duty plus every additional tariff in Chapter 99 of the Harmonized Tariff Schedule, each with the legal provision that imposes it.

It is free, needs no account, and uses the live U.S. International Trade Commission schedule.

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

What the tariff calculator includes

Base duty: the general (MFN) rate from the 8-digit HTS subheading, whether it is a percentage, a specific rate (such as cents per kilogram) or a compound rate.
Section 232: tariffs on steel, aluminum and other products named in Section 232 proclamations, including content-based duties where only the metal portion is dutiable.
Section 301: tariffs on products of China, by list and by product, including exclusions you can claim.
Section 201: safeguard tariffs, including tariff-rate quotas.
Free trade agreement claims: USMCA and other programs, applied only when you tick the claim, never assumed.
Fees: the Merchandise Processing Fee (0.3464%, $34.58 minimum and $670.86 maximum in FY2027) and the Harbor Maintenance Fee (0.125%, ocean only).

Why tariffs stack, and why the order matters

Most calculators add up percentages. U.S. tariffs don't always add. The Chapter 99 notes decide which programs stack, which override others, and which apply only to part of the value. A product can owe Section 301 and Section 232 duties at the same time, while a single article takes only one Section 232 heading. Some provisions replace the base rate instead of adding to it.

Trade Terminal applies those notes as written and shows each line with its Chapter 99 heading, so you can check the logic rather than trust a single total.

Why the entry date changes the answer

Tariffs are set by the revision of the schedule in force on the date of entry, not the date you placed the order. Rates have changed many times since 2020, sometimes with only days of notice. Pick any entry date back to 2020 and the calculator uses that revision, which makes it useful for refund claims and post-summary corrections as well as planning.

Built for brokers, useful for importers

The calculator was built for licensed customs brokers, so it shows the working: each duty line, its basis and its rate. Importers use it to price landed cost before booking freight; brokers use it to check a classification's exposure before an entry is filed. The Broker Box adds quota fill, partner government agency flags and active AD/CVD cases for the same code.

Need to compare countries or dates? Use the tariff simulator. Looking for a code? Browse the HTS.

Frequently asked questions

How do I calculate tariffs on an import to the United States?

Find the product's 10-digit HTS code, then apply the general (MFN) duty rate to the customs value. Add any Chapter 99 tariffs that apply to that code, origin and entry date, such as Section 301 on Chinese goods or Section 232 on steel and aluminum. Subtract any free trade agreement claim, then add the Merchandise Processing Fee and, for ocean freight, the Harbor Maintenance Fee. The step-by-step guide walks through an example.

Is this tariff calculator free?

Yes. The Trade Terminal tariff calculator is free to use and does not require an account.

Which tariffs does the calculator include?

Base duty from the HTS, Section 232, Section 301 and Section 201 tariffs and other Chapter 99 provisions, free trade agreement claims such as USMCA, the Merchandise Processing Fee and the Harbor Maintenance Fee. Antidumping and countervailing duty (AD/CVD) cases are flagged but not added to the total, because their rates depend on the producer and exporter.

How current are the tariff rates?

The schedule is checked against the USITC every day and new revisions are installed automatically. Each estimate uses the revision in force on the entry date you choose, back to 2020.

Is a tariff calculator result a binding ruling?

No. It is an estimate for planning. Duties are determined by U.S. Customs and Border Protection at entry. For certainty on classification, request a binding ruling from CBP or ask a licensed customs broker.