US HTS Code Finder

# HTSUS Code Finder & Classification Guide: 10-Digit US Tariff Structure

Accurate product classification under the Harmonized Tariff Schedule of the United States (HTSUS) is the single most critical compliance task for US importers. Maintained by the United States International Trade Commission (USITC) and enforced by U.S. Customs and Border Protection (CBP), a 10-digit HTSUS code determines your statutory Most-Favored-Nation (MFN) tariff rate, eligibility for Free Trade Agreements (USMCA, KORUS), and exposure to Section 301, 232, or Anti-Dumping duties. Using our tool-focused guide, importers can master the 10-digit structure, navigate General Rules of Interpretation (GRI), and prevent costly CBP misclassification penalties.

Deconstructing the 10-Digit HTSUS Structure

Every HTSUS code consists of 10 digits broken into five distinct legal levels:

1. Chapter (Digits 1–2): International WCO standard defining broad industry category (e.g. Chapter 84 = Nuclear Reactors, Boilers, Machinery).
2. Heading (Digits 3–4): International WCO standard defining specific product group (e.g. 8471 = Automatic Data Processing Machines / Laptops).
3. Subheading (Digits 5–6): International WCO standard defining technical sub-type (e.g. 8471.30 = Portable Automatic Data Processing Machines weighing ≤ 10 kg).
4. Legal Rate Line (Digits 7–8): US-Specific Legal Line establishing the statutory tariff rate in Column 1 of the HTSUS schedule.
5. Statistical Suffix (Digits 9–10): US Census Bureau Suffix used strictly for trade tracking and statistical data collection.

General Rules of Interpretation (GRI) & Classification Hierarchy

When classifying complex, composite, or multi-component products, CBP enforces six sequential General Rules of Interpretation (GRI 1 through GRI 6):

• GRI 1 (Terms of Headings): Classification is determined legally by the literal terms of the headings and relative section or chapter notes.
• GRI 2 (Incomplete & Mixtures): Incomplete or unfinished articles having the essential character of the complete article are classified as finished articles.
• GRI 3 (Composite Goods & Essential Character): When goods are classifiable under two or more headings, classify by: (a) Specific Description, (b) Essential Character, or (c) Heading occurring last in numerical order.
• GRI 4 (Most Akin): Goods which cannot be classified by GRI 1–3 are classified under the heading appropriate to goods to which they are most akin.
• GRI 5 (Cases & Containers): Specially shaped packaging (e.g. camera cases, musical instrument boxes) presented with the article are classified with the article.

Common Misclassification Risks & CBP Penalties

Importers are legally responsible for exercising "Reasonable Care" under 19 U.S.C. § 1484 when declaring 10-digit HTSUS codes on CBP Form 7501:

| Misclassification Risk | Financial & Legal Consequence | CBP Enforcement Mechanism |

|---|---|---|

| Negligent Classification | Civil penalties up to 200% of duty short-paid or 20% of entered value | CBP Form 28 (Request for Information) |

| Gross Negligence / Fraud | Confiscation of goods + penalties up to 100% of entered value | CBP Form 29 (Notice of Action) |

| Section 301 Evasion | Retroactive 25% tariff assessment + statutory interest | Focused Assessment Audit / 19 U.S.C. § 1592 |

How to Search HTSUS Codes in Our Tool

To find and verify your product's 10-digit HTSUS code:

1. Type your product name, technical material, or end-use into our HTSUS Lookup Search Bar.
2. Drill down through Chapter, Heading, Subheading, and 10-digit Statistical Suffix lines.
3. Review the Column 1 General Duty Rate (MFN rate) and Special Duty Rate (USMCA/KORUS preferential rates).
4. Check active Section 301 / 232 Trade Remedy Flags assigned to that specific HTSUS line.
5. Cross-reference your search results against official CBP CROSS Binding Rulings.

Frequently Asked Questions

What is the difference between an HTS Code and an HSN Code?

The first 6 digits (Chapter, Heading, Subheading) are standardized globally by the WCO under the Harmonized System (HS). The 7th through 10th digits are country-specific: the US uses 10-digit HTSUS codes, while India uses 8-digit HSN codes.

What is the CROSS database and how does it help classification?

CROSS (Customs Rulings Online Search System) is CBP's searchable database containing thousands of legally binding classification decisions issued to importers.

What is Column 2 in the HTSUS schedule?

Column 2 rates are steep statutory tariffs (often 35% to 110%) applied strictly to imports originating in embargoed or non-MFN countries (such as Cuba, North Korea, and Russia).

Can I change my HTSUS code after submitting CBP Form 7501?

Yes. Importers can file a Post-Summary Correction (PSC) within 300 days of entry, or file a formal Protest under 19 U.S.C. § 1514 within 180 days of liquidation.

What is an ISF 10+2 filing and does it require the HTSUS code?

Importers Security Filing (ISF 10+2) must be submitted to CBP 24 hours prior to ocean cargo loading at foreign ports. It requires declaring 6-digit HTSUS subheadings for all line items.

Step-by-Step Guide: Using Our HTSUS Calculator Tool

To accurately classify commercial cargo and calculate border duty exposure:

1. Input your product's Technical Description, Raw Material Composition, or Known 6-Digit HS Code.
2. Review suggested 10-digit HTSUS statistical line items.
3. Verify GRI classification logic: check whether the item is a unfinished article (GRI 2a), composite good (GRI 3b essential character), or set put up for retail sale.
4. Review active Trade Remedy Flags: the tool automatically displays active Section 301 China lists (7.5% or 25%), Section 232 metal surcharges (25% or 50%), and active Anti-Dumping Duty (ADD) case numbers.
5. Export your official HTSUS Classification Worksheet to support Reasonable Care requirements during CBP audits.

Legal Principles of Essential Character (GRI 3b)

When classifying composite goods, multi-material kits, or retail sets under HTSUS:

• Essential Character Determination: CBP examines bulk, weight, quantity, value, or the role of a component material in relation to the use of the goods.
• Example Case Study: A plastic tool kit containing a steel hammer, plastic case, and rubber grips is classified based on the steel hammer as the component giving the set its essential character under Heading 8205.