Harmonized Tariff Schedule
Also: HTS · HTSUS · tariff schedule
The official US list of every imported product and its duty rate, maintained by the US International Trade Commission and used by CBP to assess duty.
Definition
The Harmonized Tariff Schedule of the United States (HTSUS) is the master reference for US import duty. It runs from raw materials to finished goods across 99 chapters, each product on a 10-digit line with its rate.
It has two rate columns: Column 1 (general and special) for normal-trade-relations partners, and the higher Column 2 for a small set of countries without NTR status. Additional tariffs like Section 301 and 232 live in Chapter 99 and cross-reference back to your product's line.
Worked example
To find a laptop's US treatment you read heading 8471 in Chapter 84, drop to the 10-digit line, read the Column 1 general rate, then check Chapter 99 for any additional duties by origin.
Related codes & tools
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Sources
Definitions are informational, not customs rulings. Confirm rates against the schedule of record and see our methodology & disclaimer.