You can try to find your HTS code using the Harmonized Tariff Schedule.
Your supplier may have provided you with the HTS Code, but if you don’t know the HTS Code of your product, you can try to determine the HTS Code using the HTS Search bar (shown below) or Flexport's HS Code Lookup Tool.
Be aware that the many rules and exclusions make correct classification difficult. For example, you may sell a kitchen knife and search “knife” and find section 8211:
However, if your knife has a ceramic blade, it won’t be classified under section 8211, because Chapter 82 Note 1 excludes blades made of ceramic.
Your product would actually be classified under Chapter 69: Ceramic Products:
Read more about product classification in the United States International Trade Commission's FAQs.
Correctly identifying your product’s HTS Code on your own can be tricky, but your customs broker may help correctly classify your product. U.S. Customs and Border Protection will make the final determination of what the correct rate of duty is, but as the importer you are ultimately responsible for ensuring that your products are correctly classified.
With the correct HTS Code, you can estimate the customs duties you will need to pay upon importing.