About TariffMath
What We Provide
TariffMath is a free service that provides U.S. import duty information for businesses and individuals. We make it easy to find accurate tariff rates for products imported into the United States from countries around the world.
Our database includes up-to-date information on:
- Base tariff rates from the Harmonized Tariff Schedule (HTS)
- Section 301 additional duties on certain products
- Free Trade Agreement (FTA) preferential rates
- Special program duty rates (like GSP, AGOA, etc.)
- Select Chapter 99 temporary duty modifications, such as Liberation Day Tariffs from April 2025. We will seek to continually update our database with the latest information as it's announced.
How It Works
Our service takes the complex U.S. Harmonized Tariff Schedule and makes it accessible through a simple search interface:
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Enter an HTS code or product description
Search for products using HTS codes (e.g., 8471.30.01) or enter keywords to find relevant classifications.
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Select the country of origin
Choose the country where your imports are manufactured or produced.
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Get comprehensive duty information
View the applicable base duty rate, any additional duties, and the combined rate you'll pay at U.S. Customs.
Important Disclaimer
The information provided by TariffMath is for reference purposes only and should not be used as a substitute for professional customs advice. While we strive to keep all information accurate and up-to-date, we make no representations or warranties regarding the completeness, accuracy, reliability, or availability of the information.
Tariff classifications and duty rates can be complex and are subject to interpretation by customs authorities. Users are advised to consult with a licensed customs broker or trade attorney for official guidance on tariff classifications and duty rates.