How to Classify Products Under HTS 2026

Every product imported into the United States needs a Harmonized Tariff Schedule (HTS) code. Getting it right determines how much duty you pay, whether your shipment clears customs smoothly, and whether you comply with trade regulations. Getting it wrong can mean penalties, delays, and overpaid duties. This guide walks you through the classification process for 2026.

What Is the Harmonized Tariff Schedule?

The Harmonized Tariff Schedule of the United States (HTSUS) is the official reference for classifying imported goods. Maintained by the U.S. International Trade Commission (USITC), it assigns a numeric code to every product category. That code determines the applicable duty rate, any trade program eligibility, and whether additional tariffs (like Section 301 or IEEPA) apply.

The HTS is based on the international Harmonized System (HS) maintained by the World Customs Organization. The first six digits are standardized globally, meaning 8471.30 refers to laptops whether you are importing into the US, EU, or Japan. The remaining digits are country-specific and determine your exact duty rate.

How HTS Codes Are Structured

An HTS code can be up to 10 digits long. Each level adds specificity:

When performing an HTS code lookup, you typically start at the 4-digit heading level and work your way down. The key is identifying the correct chapter first (the first two digits), then narrowing within that chapter.

Step-by-Step Classification Process

The USITC provides General Rules of Interpretation (GRI) that govern how to classify products. Here is the practical process:

Common Classification Mistakes

Even experienced importers make these errors:

• 1.Classifying by use instead of composition. The HTS generally classifies by what a product is, not what it is for. A plastic phone case is classified under plastics (Chapter 39), not telecom equipment (Chapter 85).
• 2.Ignoring chapter notes. Chapter and section notes override heading descriptions. Skipping them is the most common source of misclassification.
• 3.Relying on supplier-provided codes. Your customs broker or supplier may use a different country’s tariff schedule. The first 6 digits may match, but the US-specific digits (and duty rates) will differ.
• 4.Not checking for tariff updates. HTS codes change. The 2026 schedule includes significant revisions, especially around electronics and industrial components.
• 5.Overlooking sets and kits. Products sold as sets (like a toolkit or skincare kit) have special classification rules under GRI 3(b) based on “essential character.”

How AI Can Help with HTS Classification

Manual classification is time-consuming and error-prone. A single misclassification can result in overpaid duties, CBP penalties, or shipment holds. AI-powered tools can accelerate the process by cross-referencing product descriptions against the full HTS schedule, CBP ruling history, and current tariff overlays.

Moya uses AI agents trained on over 130,000 CBP rulings to classify products. Rather than just matching keywords, it analyzes product composition, function, and material to apply GRI rules the way a customs specialist would. It then checks Section 301, Section 232, and IEEPA tariff exposure automatically, showing tariff impact signals and caveats.

The key advantage of AI-assisted classification is consistency. Human classifiers may interpret the same product differently depending on experience. An AI system applies the same logic every time and provides an evidence chain showing exactly which rulings and notes informed the decision.

Key 2026 Changes You Need to Know

The 2026 tariff landscape has shifted significantly. Here are the changes that affect the most importers:

Section 301 Tariff Increases

Section 301 tariffs on Chinese-origin goods have been restructured. List 1 and List 2 products remain at 25%. List 3 was raised from 10% to 25% in prior years and remains there. List 4A covers a broad range of consumer goods at rates between 7.5% and 25%. Products like semiconductors, electric vehicles, batteries, solar cells, and critical minerals face additional targeted increases.

IEEPA Tariffs

The International Emergency Economic Powers Act (IEEPA) has been invoked to impose additional tariffs on goods from specific countries. These tariffs are separate from and cumulative with Section 301 and Section 232 duties. IEEPA tariffs can change rapidly based on executive action, making current-source review essential.

Section 232 Steel and Aluminum

Section 232 tariffs on steel (25%) and aluminum (10%) continue to apply. Derivative products (downstream articles made from steel or aluminum) are also covered. Country exclusions and product exclusions change periodically, so checking current status is critical for each shipment.

Exclusion Expirations

Many previously granted tariff exclusions have expired or are set to expire in 2026. If you have been relying on an exclusion to reduce your duty rate, verify that it is still active. The Federal Register publishes exclusion extensions and terminations, but tracking them manually across multiple USTR notices is difficult.