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Chapter 77

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Guide to the Harmonized Tariff Schedule (HTS)

What is the HTS?

The Harmonized Tariff Schedule (HTS) is a 10-digit classification system used by the United States to determine tariff rates and statistical categories for imported goods. It's based on the international Harmonized System (HS) but includes additional US-specific classifications.

HTS Structure

First 6 Digits (HS Code)

International standard used by most countries

0104.20
Chapter Heading Subheading
Last 4 Digits (US Specific)

US-specific classifications and statistical suffixes

0104.20.00.00
HS Code + US Classification

Understanding Rate Columns

Column 1 - General

Normal Trade Relations (NTR/MFN) rates for most countries

Column 1 - Special

Preferential rates for Free Trade Agreements (USMCA, etc.)

Column 2

Higher rates for non-MFN countries (Cuba, North Korea)

General Rules of Interpretation

1. Classify by the most specific description that applies
2. If incomplete/unfinished, classify as if complete
3. Mixtures are classified by the component that gives them their essential character
4. Accessories and spare parts are classified with the main article

Additional Resources

Official USITC HTS Learning Guide Official HTS Online Database CBP Ruling Database