Get the HTS code wrong, and duty, customs clearance and compliance all go wrong with it. Master the four-step method "from product to code" and you can look it up accurately yourself.
What problem this rule solves
The HTS code is the "ID number" US Customs assigns to every category of goods.
Customs declaration, duty calculation, Section 301 determination, anti-dumping determination — all start with the code.
Fill in the wrong code, and at best you pay back duty; at worst your cargo is held for a Customs Exam.
So the first thing to do is not compare prices — it is to look up the code accurately.
What an HTS code looks like
HTS stands for Harmonized Tariff Schedule, the US Harmonized Tariff Schedule.
| Digits | Meaning | Notes |
|---|---|---|
| First 6 digits | International HS code | Identical across all countries |
| Digits 7–8 | US subdivision | US-specific subheadings |
| Digits 9–10 | Statistical detail | Declaration uses 10 digits |
The first 6 digits are universal; only the full 10 digits are the US standard.
The four-step method from product to code
Step one: describe the product clearly — material, use, working principle, whether it contains batteries.
Step two: determine the chapter — find the Chapter by use or material.
Step three: work down level by level — Chapter → heading (4 digits) → subheading (6 digits) → US subdivision (8/10 digits).
Step four: verify — read the full description of that code in the tariff schedule and check it against the product point by point.
Why the same product can have several candidate codes
Classification looks at the "essential character", not the name.
For combined materials, such as wood-and-metal furniture, look at the material that gives the essential character.
For multi-function products, classify by the primary use.
For two codes you are unsure about, the duty rates and compliance requirements may be completely different.
How to verify it yourself (official channels)
US Customs official HTS tariff schedule: hts.usitc.gov, searchable by keyword or code.
USITC (US International Trade Commission) publishes the HTS and its revisions.
The CBP (US Customs and Border Protection) website has the CROSS classification ruling database.
If you cannot find it, you can apply for a Binding Ruling.
Pitfalls sellers easily fall into
Writing only the product name without material or use — the code will inevitably be off.
Searching with an industry nickname — you will not find the correct code.
Using one code all the way through — the product changed but the code did not.
Hearing others say "everyone declares this number" and not checking the description yourself.
Documents you need to prepare
Product specification sheet: material, use, model.
Purchase contract or cost invoice.
Product photos, including internal structure.
Historical customs declaration records (if any).
Certification documents required for special categories.
How to verify once you have the code
Use the full description of that code in the tariff schedule and check it against the product point by point.
Check CROSS for rulings on similar products.
If the code clearly does not match the actual goods, better to look it up again than to force it.
Two common misconceptions
Misconception one: the longer the code, the more accurate. Declarations use 10 digits, but if the first 6 are wrong, everything after is wrong.
Misconception two: one code never changes. If the product's material or function changes, the code must be looked up again.
