Classification is a legal decision · Ten digits for US entry
HTSUS — the US tariff line
The US Harmonized Tariff Schedule adds statistical digits to the HS and carries the duty rates and special measures.
Key facts
| Maintainer | US International Trade Commission |
|---|---|
| Length | Ten digits, with the first six aligned to the HS |
| Rate columns | General, special and column 2 rates |
| Chapter 99 | Temporary measures such as additional duties and quotas |
| Rulings | CBP publishes classification rulings through CROSS |
| Binding ruling | An importer can request a ruling for a specific product |
| Official source | USITC HTS and CBP CROSS |
Chapter 99 can override the headline rate
A product can look duty-free in its normal chapter and still face an additional duty under chapter 99. The entry system applies the measures in force on the entry date. Check both the product line and the current chapter 99 measures.
Tariff exclusions and effective dates change. A note from last quarter is not evidence of the rate today.
Use CROSS when the answer is not obvious
CBP's CROSS database contains published rulings on specific products. A similar ruling is persuasive, but it is not automatically binding on a different product. For a high-value or repeated import, request a ruling that names your product.
Keep the ruling with the entry file and make sure the invoice description matches the ruling's scope.
Frequently asked questions
Is the HTSUS code the same as the HS code?
The first six digits match the HS. The HTSUS adds four digits for US duty and statistical purposes and may be affected by chapter 99 measures.
Is a CROSS ruling binding on my product?
Only the ruling issued for your product and facts is binding. A similar ruling on another product is persuasive but not a guarantee.
Ask a compliance question
Free first answer by email. Tell us the destination, the product and the channel — we will point you to the rule and the official source. No obligation, no sales sequence.