HS codes and HTS codes are closely related, but they are not interchangeable for every customs purpose. The Harmonized System (HS) provides the international product-classification framework through the six-digit level. The Harmonized Tariff Schedule of the United States (HTSUS) builds on that framework with additional U.S.-specific tariff and statistical subdivisions used when merchandise is imported into the United States.
For U.S. importers, the practical takeaway is simple: a supplier’s HS code can be useful starting information, but it may not be the complete classification needed for a U.S. customs entry. The actual merchandise, its materials, function, use, and technical characteristics still need to support the U.S. classification.
| Quick answer: HS code vs. HTS code
An HS code identifies goods within the internationally harmonized classification system. An HTSUS classification applies that framework to U.S. imports and extends it into U.S.-specific tariff and statistical categories. The first six digits are based on the international HS; the additional U.S. digits provide more detailed national classification. |
HS Code vs. HTS Code at a Glance
The easiest way to understand the difference is to look at what each system is designed to do.
| Feature | HS Code | HTS Code / HTSUS |
|---|---|---|
| System | Harmonized System | Harmonized Tariff Schedule of the United States |
| Scope | International framework | United States tariff and statistical schedule |
| Core standardized level | Six-digit HS subheading | Builds on the six-digit HS structure |
| Additional detail | Countries may extend the HS beyond six digits | Includes U.S. 8-digit tariff lines and 10-digit statistical reporting categories |
| Primary use | International product classification and trade statistics | U.S. tariff treatment and import reporting |
| Enough for a U.S. entry? | Not usually as the complete U.S. classification | The applicable U.S. classification must be determined at the required HTSUS level |
Important: “HS = 6 digits and HTS = 10 digits” is a useful shorthand, but it is not the full story. The U.S. schedule also contains 8-digit tariff-rate lines, with further 10-digit statistical reporting detail.
What Is an HS Code?
The World Customs Organization (WCO) developed the Harmonized Commodity Description and Coding System, commonly called the Harmonized System or HS. It provides a standardized international structure for classifying traded goods and is used by more than 200 countries and economies as a basis for customs tariffs and trade statistics.
How the Six-Digit HS Structure Works
At the international HS level, the code becomes more specific as digits are added:
- First 2 digits: chapter
- First 4 digits: heading
- First 6 digits: subheading
Those six digits create the internationally harmonized foundation. They tell customs authorities what general product category the merchandise belongs to, but individual countries can create further subdivisions after the six-digit level.
Are HS Codes the Same in Every Country?
The six-digit HS foundation is internationally harmonized, but the full tariff number is not necessarily identical from country to country. A U.S. importer, Canadian importer, and European importer may begin from the same six-digit HS subheading while using different country-specific digits after that point.
That is why a foreign supplier’s full 8-, 10-, or longer-digit tariff number should not automatically be treated as the U.S. HTSUS classification.
What Is an HTS Code?
The Harmonized Tariff Schedule of the United States (HTSUS) is the U.S. tariff and statistical classification schedule for imported merchandise. The U.S. International Trade Commission maintains and publishes the HTS, while U.S. Customs and Border Protection administers and interprets the tariff for import entries.
CBP’s HTS guidance explains that the HTS is based on the international Harmonized System and provides the tariff rates and statistical categories that apply to merchandise imported into the United States.
Why Does the United States Add More Digits?
The international six-digit structure is broad enough to create a common global language for merchandise, but U.S. tariff administration often needs more detail. The additional U.S. subdivisions distinguish products for purposes such as tariff-rate treatment, statistical reporting, trade-program administration, quotas, and other U.S.-specific provisions.
What Do the 8-Digit and 10-Digit Levels Mean?
A useful way to think about the U.S. structure is:
- 6 digits: international HS subheading.
- 8 digits: U.S.-specific tariff or rate-line subdivision.
- 10 digits: additional U.S. statistical reporting detail.
For an importer, this distinction matters because the six-digit code a vendor provides may point in the right direction while still leaving the U.S. tariff line unresolved.
What Is the Difference Between an HS Code and an HTS Code?
The difference between an HS code and an HTS code is primarily scope and level of detail. The HS is the international classification framework. The HTSUS is the U.S. schedule built on that framework for U.S. tariff and statistical purposes.
| Illustrative code structure
1234 -> HS heading |
This is also why searches for “HTS vs HS code” often produce conflicting answers. Some explanations use “HS code” loosely to mean any tariff classification number. For U.S. imports, it is better to distinguish the internationally harmonized six-digit level from the U.S.-specific HTSUS classification used for entry and reporting.
Can I Use My Supplier’s HS Code for a U.S. Import?
You can use a supplier-provided HS code as supporting information, but you should not assume it is the complete or final U.S. classification.
An overseas supplier may provide:
- A six-digit HS code.
- An 8- or 10-digit tariff code from the supplier’s own country.
- A classification previously used for similar merchandise.
All of that can help the importer and customs broker begin the classification review. But the U.S. classification still needs to fit the actual merchandise and the current U.S. tariff schedule.
Why a Foreign 8- or 10-Digit Code May Not Match the U.S. Code
Digits beyond the internationally harmonized six-digit level can be country-specific. If a supplier sends a 10-digit tariff code used in another market, the first six digits may align with the HS framework while the remaining digits follow that country’s national tariff structure, not the U.S. HTSUS.
For a stronger customs document package, Hawthorne Global’s customs clearance documents checklist explains the product and shipment details commercial importers should provide before cargo arrives.
Why the Correct HTS Classification Matters
HTS classification is more than a number on a commercial invoice. The classification can affect the tariff treatment and reporting framework applied to a product and can interact with other customs or agency requirements.
Depending on the merchandise and transaction, classification can influence:
- The applicable duty rate.
- Additional tariff provisions or trade remedies.
- Quota treatment where applicable.
- Eligibility for certain tariff programs.
- Statistical reporting.
- Documentation and entry requirements.
- Questions involving Partner Government Agencies or regulated merchandise.
A classification error can therefore create more than a duty-calculation problem. It can lead to questions during entry review, corrections, delays, additional documentation work, or compliance exposure.
Common HS and HTS Classification Mistakes
Many classification problems begin with a reasonable shortcut that gets treated as a final answer. Common mistakes include:
- Treating “HS code” and “HTS code” as completely interchangeable.
- Using only six digits when a complete U.S. classification is required.
- Copying a foreign supplier’s full tariff number into U.S. customs documentation.
- Classifying a product from its marketing name instead of its actual characteristics.
- Using vague descriptions such as “parts,” “equipment,” or “accessories.”
- Ignoring the product’s material, composition, function, or intended use.
- Reusing an old classification after the product design or material changes.
- Assuming a competitor’s code automatically applies to your product.
- Searching tariff descriptions without reviewing relevant section notes, chapter notes, or classification rules.
- Relying on an outdated HTS version instead of the current schedule.
The current U.S. HTS is revised during the year, so importers should verify that they are reviewing the schedule in effect for the transaction rather than an old saved tariff table.
What Information Is Needed to Determine an HTS Classification?
Correct classification starts with facts about the merchandise. A product name alone is often not enough.
Depending on the product, useful information can include:
- Exact product name and model or SKU.
- Materials or composition.
- Principal function and intended use.
- How the product works.
- Physical characteristics.
- Technical specifications.
- Manufacturing information where relevant.
- Ingredient or component breakdown where relevant.
- Product literature, catalog pages, photographs, or drawings.
- Country of origin.
- Prior classifications or rulings for the same merchandise.
Why “Industrial Parts” Is Usually Not Enough
Imagine a commercial invoice that describes the merchandise only as “industrial parts.” That description may be accurate in a general business sense, but it does not tell the customs team what the part is made from, what machine it belongs to, what it does, or whether its design gives it a more specific tariff treatment.
A broker may need the material, function, machine application, drawings, dimensions, technical sheet, model number, or other facts before a classification can be supported. The more technical the product, the more important it is to collect that information before the entry is being prepared under time pressure.
|
Preparing a new commercial import? Hawthorne Global can help review the customs information needed for entry preparation, including HTS classification and verification. Learn about Hawthorne Global Customs Brokerage. |
Who Is Responsible for the Classification?
Using a customs broker does not make product information optional. The importer still needs to provide accurate facts about the merchandise and should understand the basis for the classification used on the entry.
A licensed customs broker can help by reviewing product information, researching the HTSUS, evaluating possible provisions, preparing the customs entry, identifying documentation gaps, and flagging questions that may require additional analysis or formal guidance.
The strongest process is collaborative: the importer supplies accurate technical and commercial facts, and the broker applies customs expertise to the entry and classification review.
What If the Correct HTS Classification Is Unclear?
Not every classification question has an obvious answer from a keyword search. When more than one provision seems plausible, use authoritative resources and resolve the question before the shipment is creating operational pressure.
1. Check the Current HTSUS
Start with the current Harmonized Tariff Schedule. Review the relevant heading language, subheadings, section notes, chapter notes, and other applicable tariff provisions rather than choosing the first search result that resembles the product name.
2. Search CBP Rulings
CBP’s Customs Rulings Online Search System (CROSS) contains published rulings that can help researchers understand how CBP has classified specific merchandise. A ruling for another product is not automatically your classification, but it can provide useful reasoning and terminology for similar goods.
3. Consider a Binding Ruling When Appropriate
For material or genuinely uncertain classification questions, CBP’s Binding Ruling Program allows importers and other interested parties to request a pre-entry decision. CBP notes that tariff classifications issued through the program are binding, although duty rates themselves can change.
When Should Importers Review HTS Classification?
Whenever possible, review classification before the shipment departs – not after the cargo is waiting for release.
A classification review is especially useful:
- Before importing a new product.
- When material, composition, design, or function changes.
- When a supplier changes the product or manufacturing process.
- When a previously used classification is unsupported or questionable.
- Before launching a high-volume import program.
- When tariff provisions or relevant trade measures change.
- Before relying on the classification for landed-cost planning.
For ocean shipments moving through Houston, Hawthorne Global’s Port of Houston customs clearance checklist reinforces the same operational principle: resolve classification and other customs questions before the container is already at the terminal.
HS vs. HTS Classification Checklist for U.S. Importers
Before sending classification data to your customs broker, use this checklist:
- Identify the product precisely.
- Gather current technical specifications.
- Confirm material or composition.
- Confirm intended function and use.
- Review the supplier’s HS or tariff information.
- Separate the six-digit international HS level from country-specific extensions.
- Review the current U.S. HTSUS.
- Read the relevant heading, subheading, and notes.
- Verify the complete U.S. classification needed for the entry.
- Check current tariff treatment and any relevant additional provisions.
- Use consistent, specific product descriptions across customs documents.
- Give the broker the product facts early enough to resolve questions before entry preparation.
- Seek additional guidance when the classification is genuinely uncertain.
How Hawthorne Global Helps Commercial Importers With Classification
For commercial importers, classification is one part of a larger customs process. The code used on the entry needs to fit the merchandise, while the commercial invoice, importer information, origin, value, bond status, pre-arrival filings, and any Partner Government Agency requirements also need to align with the shipment.
Hawthorne Global’s commercial customs brokerage team supports importers with HTS classification and verification, customs entry preparation, Importer Security Filing (ISF), customs bonds, and coordination for regulated commercial cargo.
Getting the customs team involved before a new product moves can help identify missing specifications, unsupported supplier codes, or open classification questions while there is still time to resolve them.
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Importing a new product into the United States? Do not wait until entry preparation to discover that the supplier’s tariff code is incomplete for U.S. classification. Request a Commercial Customs Quote from Hawthorne Global. |
Frequently Asked Questions
What is the difference between an HS code and an HTS code?
An HS code identifies merchandise within the international Harmonized System through the six-digit level. The U.S. HTSUS builds on that structure with additional U.S.-specific tariff and statistical subdivisions used for imports into the United States.
Is an HS code the same as an HTS code?
They are related, but not exactly the same. The HTSUS is based on the international HS, so the first six digits come from the HS framework. The U.S. schedule then adds national tariff and statistical detail.
How many digits are in an HS code?
The internationally harmonized HS subheading is six digits. Countries can extend the classification beyond six digits for their own tariff and statistical purposes.
Why does an HTS code have more digits than an HS code?
The United States adds national subdivisions to distinguish products more precisely for tariff and statistical reporting. The U.S. schedule includes 8-digit tariff lines and 10-digit statistical reporting categories.
Can I use my supplier’s HS code for a U.S. import?
Use it as supporting information, not automatically as the final U.S. classification. A supplier’s six-digit HS code may be a useful starting point, while a longer foreign tariff code may contain country-specific digits that do not match the U.S. HTSUS.
Are HS codes the same in every country?
The six-digit international HS foundation is harmonized. Digits added after the six-digit level can differ because each country may create national tariff or statistical subdivisions.
Does an HTS code determine the import duty?
The HTSUS classification is a key part of determining tariff treatment, but the amount ultimately owed can also depend on factors such as origin, trade programs, additional tariff provisions, and the facts of the transaction.
Who is responsible for determining an HTS classification?
The importer is responsible for the accuracy of the import information used for entry. A licensed customs broker can help research, review, and apply the appropriate HTSUS classification based on accurate product information supplied by the importer.
General information notice: This article is for general educational purposes and is not legal advice or a binding tariff determination. Product classification depends on the specific merchandise and current law, regulations, tariff provisions, and agency guidance.
