HS Codes Explained: How to Classify Your Products for Import
The Harmonized System (HS) is an international framework for classifying traded products. Every product imported into the US must be assigned an HS code, and that code determines how much duty you pay.
How HS Codes Are Structured
An HS code is a hierarchical number. The first 6 digits are internationally standardized. The US adds 4 more digits for a 10-digit HTS (Harmonized Tariff Schedule) code.
Example: 3926.90.99.96
39 — Chapter: Plastics and articles thereof
3926 — Heading: Other articles of plastics
3926.90 — Subheading: Other
3926.90.99 — US tariff line: Other (specific)
3926.90.99.96 — Statistical suffix
Why Getting the Right Code Matters
The difference between two similar-sounding codes can mean 0% vs. 25% duty. For example, a stainless steel water bottle might fall under a code with 0% duty if classified as a vacuum flask, or 7.2% if classified as a general steel container.
Using the wrong HS code can also lead to customs penalties, shipment delays, and forced reclassification — all of which cost time and money.
How to Find Your Product's HS Code
- USITC HTS Search: The official database at hts.usitc.gov lets you search by keyword.
- Ask your supplier: Experienced suppliers usually know the HS code for their products.
- Customs broker: A licensed broker can classify products for you (typically $50-100 per classification).
- AI classification: Tools like LC Pilot use AI to suggest the correct code from a plain English product description.
Find Your HS Code Instantly
Type a product description and our AI suggests the right HS code, then pulls the official duty rate automatically.
Tips for Accurate Classification
- Material matters most. HS codes are primarily organized by what the product is made of, not what it is used for.
- Function matters second. If material alone does not narrow it down, the product's primary function determines the heading.
- Be specific. General descriptions lead to general codes with potentially higher rates. Specific descriptions lead to specific codes that may qualify for lower rates.
- Check Section 301 lists. Even with the right HS code, Section 301 tariffs add 7.5-100% on thousands of Chinese product categories.