If you import goods into the United States, you've probably come across the term HTS code. It stands for Harmonized Tariff Schedule code, and it's one of the most important numbers in international trade. This guide explains everything you need to know.
What Is an HTS Code?
An HTS code is a 10-digit number assigned to every product that enters the United States. The code tells U.S. Customs and Border Protection (CBP) exactly what the product is, which determines:
- The duty rate (the percentage tax you pay on the product's value)
- Whether the product qualifies for special trade programs like free trade agreements
- Any import restrictions, quotas, or licensing requirements that apply
- Statistical tracking by the U.S. government
How Are HTS Codes Structured?
HTS codes follow a specific structure. All 10 digits are meaningful:
- Digits 1–2: Chapter (broad category, e.g., Chapter 03 = Fish & Seafood)
- Digits 3–4: Heading (narrower group within the chapter)
- Digits 5–6: Subheading (further detail — this is the international HS level)
- Digits 7–8: U.S. tariff rate line
- Digits 9–10: Statistical suffix (used for reporting, not always relevant to duty)
Who Manages HTS Codes?
The U.S. International Trade Commission (USITC) publishes and maintains the official Harmonized Tariff Schedule of the United States. It is updated several times per year, with the current version being the 2026 Revision 5. The full schedule is public domain and freely available.
Why Does the Right HTS Code Matter?
Using the wrong HTS code — even accidentally — can lead to serious consequences:
- Overpaying or underpaying duties
- Delays at the border
- Fines and penalties from CBP
- Missing out on duty-free treatment under a free trade agreement
When in doubt, consult a licensed customs broker or request a binding ruling from CBP before filing.
How Do I Find an HTS Code?
You can search for HTS codes right here on LookupHTS by typing a plain-English description of your product. You can also browse all 98 chapters of the schedule or use the duty calculator to estimate what you'll owe.