HS / HTS Codes

4 minutes read

An HTS code is one of the most important classification tools in U.S. importing. It helps determine how imported products are identified for customs purposes and which duty treatment may apply.

HTS code definition

An HTS code is a U.S. import classification code used under the Harmonized Tariff Schedule to identify imported goods and determine applicable tariff treatment. In simple terms, an HTS code tells customs what a product is for import classification purposes. It helps support duty assessment, reporting, and compliance when goods enter the United States.

What does HTS code mean?

HTS stands for Harmonized Tariff Schedule. In the U.S., an HTS code is the number used to classify imported products under that schedule.

Businesses often use the terms HTS code, HTS number, and tariff code in similar ways. In practice, the HTS code is the import classification number used to describe the product and link it to the correct tariff treatment.

How an HTS code works

An HTS code works by classifying a product based on what it is, what it is made of, and sometimes how it is used or presented when imported. The correct classification matters because tariff rates, reporting rules, and certain import requirements can depend on that code.

The product is identified: customs looks at the item’s material, function, and condition as imported.
The correct tariff provision is selected: the product is matched to the most appropriate HTS classification.
Duties and reporting follow that classification: the code helps determine tariff treatment and import reporting details.

HTS code vs HS code: what is the difference?

The difference between an HTS code and an HS code is mainly about level of detail. The first 6 digits are based on the international Harmonized System. In the U.S., additional digits are used to create the fuller import classification used under the Harmonized Tariff Schedule.

In simple terms, the HS code is the international base structure, while the HTS code is the U.S. import version used for more detailed tariff classification.

Anatomy of an HTS code

Importers often describe an HTS code as a 10-digit U.S. import classification number. The number becomes more specific as you move from left to right.

First 2 digits: chapter
First 4 digits: heading
First 6 digits: internationally harmonized subheading
8-digit level: U.S. tariff classification detail
10-digit level: U.S. statistical reporting detail

Why HTS codes matter for importers

HTS codes matter because incorrect classification can affect duties, entry accuracy, compliance risk, and shipment timing. A product entered under the wrong code may trigger incorrect duty treatment or create questions during customs review.

Helps determine duty treatment
Supports accurate customs entry filing
Improves import compliance
Helps avoid classification-related delays or disputes
Supports better landed-cost planning

For businesses importing across multiple categories, Dedola’s global logistics services can help connect freight execution with classification, customs, and documentation support.

How to find the right HTS code

Finding the right HTS code starts with understanding the product in detail. Material, intended function, product form, and condition at the time of import can all affect classification.

Because tariff classification can be technical, many importers work with customs specialists when the product is complex, highly regulated, or duty-sensitive. In some cases, classification strategy also affects broader sourcing and landed-cost decisions within the supply chain.

That is why many companies pair classification work with broader supply chain planning rather than treating customs as a separate step.

HTS code vs Schedule B

HTS codes are mainly associated with U.S. imports, while Schedule B numbers are used for U.S. exports. They share the same first 6 digits in many cases because both are tied to the global Harmonized System structure, but they are not identical systems at the full 10-digit level.

Common HTS code terms importers should know

HTS: Harmonized Tariff Schedule.
HS: Harmonized System, the global product-classification framework.
Tariff Classification: the process of determining the correct code for imported goods.
Duty Rate: the tariff treatment that may apply under the classification.
Statistical Suffix: the last part of the U.S. 10-digit import reporting number.

HTS code FAQ

What is an HTS code in simple terms?

An HTS code is the U.S. import classification number used to identify goods for tariff and customs purposes.

What does HTS stand for?

HTS stands for Harmonized Tariff Schedule.

What is the difference between an HTS code and an HS code?

The HS code is the international 6-digit base system, while the HTS code is the more detailed U.S. import classification used under the Harmonized Tariff Schedule.