The Harmonized Tariff Schedule of the United States (HTSUS) classifies goods imported into the U.S. and sets the tariff categories and rates used for them. To find a likely code, describe the product precisely, search the current schedule, and read the relevant legal notes and classification rules—not just the search result. The U.S. International Trade Commission (USITC) publishes the schedule, but only U.S. Customs and Border Protection (CBP) can issue a legally binding classification ruling.
What the HTS does—and what a code tells you
The HTS is the U.S. tariff schedule for imported merchandise. It is built on the international Harmonized System (HS), which gives countries a shared structure for describing traded goods. The U.S. schedule uses that structure and adds national detail for import duties and statistical reporting. The USITC’s current HTS provides the schedule and its revisions.
An HTS number identifies a provision for classifying a product; it is not a product-name lookup or a guarantee of the total duties owed on a particular shipment. Classification depends on the good’s characteristics and the legal text. The final duty treatment can also depend on country of origin, eligibility for a special trade program, additional Chapter 99 provisions, and measures that are not fully contained in the HTS, such as antidumping or countervailing duties and embargoes.
How to read the digits in a U.S. HTS number
The digits move from internationally harmonized categories to U.S.-specific detail. The first six digits are the international HS nomenclature; the U.S. schedule continues beyond them.
| Digits | What they identify | Scope |
|---|---|---|
| 1–2 | Chapter | Part of the international HS structure |
| 1–4 | Heading | Internationally harmonized heading |
| 1–6 | Subheading | Internationally harmonized subheading |
| 1–8 | U.S. tariff line | U.S. detail that includes the applicable duty-rate line |
| 1–10 | Statistical reporting category | U.S. import reporting detail |
These levels are not interchangeable: the first six digits align internationally, while the U.S. eight- and ten-digit extensions serve U.S. purposes. A longer code does not automatically mean a higher duty rate.
HTS and Schedule B are not the same number
The HTS is for U.S. imports; Schedule B is used for U.S. exports and is administered by the Census Bureau. Their first six digits align through the global HS system, but their U.S. eight- and ten-digit categories can differ. Do not use a full Schedule B export number as though it were a U.S. import HTS number. The USITC explains the distinction in its HTS and Schedule B guidance.
How to research a likely classification
- Write down the product facts. Record what the item is and does, what it is made of or contains, how it is made, and whether it is a set, composite good, part, or accessory. These details can point to different provisions even when products share an everyday name.
- Open the current U.S. schedule. Use the USITC HTS site and check the revision date. The schedule is revised, so an old printout or saved code may no longer reflect the current text.
- Search several terms, then inspect candidate provisions. Try common names, technical terms, materials, and functions. Search is a way to find leads, not proof that a provision applies: the schedule is a legal classification system, not an index of every consumer phrase.
- Start with the heading and apply the rules. Read the heading language, relevant section and chapter notes, and the General Rules of Interpretation and Additional U.S. Rules of Interpretation. Work down through subordinate categories to the most specific provision supported by the product facts. The USITC classification guidance describes this approach.
- Check the search tool’s limits. USITC cautions that results may be shown in numerical order rather than ranked by fit, and a search may miss a provision expressed in technical language. For example, “phone charger” may return no match even though a relevant provision uses wording such as “static converters for telecommunication devices.” Read the warning to users of HTS Search rather than treating the first result—or no result—as decisive.
- Look for relevant CBP rulings. Search CBP’s CROSS rulings database for products with closely matching facts. A ruling can help explain how CBP applied the schedule, but its conclusion rests on the described merchandise and circumstances; it does not automatically classify a different product.
- Resolve material uncertainty before relying on the code. An import specialist may offer informal assistance. If a binding answer is needed, follow CBP’s process for requesting a ruling. A broker can also help with classification or entry work, but the scope of the engagement matters.
- Review the full duty picture for the shipment. After identifying a likely classification, check the applicable country-of-origin treatment, any qualifying preferential program, relevant Chapter 99 provisions, and additional measures. The general rate in a tariff line may not capture every duty or restriction affecting an import.
Who maintains the schedule and who makes binding decisions?
The USITC publishes and maintains the HTS. CBP interprets and enforces it for imports and is the agency authorized to issue legally binding rulings or advice on import classification. A result from the USITC search tool is advisory; it does not certify a code or guarantee the final duty for an individual shipment. The USITC summarizes the division of responsibility in its classification guidance.
Importers remain responsible for knowing applicable CBP requirements and ensuring that their imports comply. A customs broker may provide useful expertise, but hiring one is not legally required. The USITC states in its importing FAQ: “There is no legal requirement for you to hire a customs broker to clear your goods.”
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Choose the right kind of help
| Option | Useful when | What it does not provide |
|---|---|---|
| Self-research in the current HTS | You want to understand candidate provisions and the legal structure. | A search or self-assessment is not a binding determination. |
| Prior CBP CROSS ruling | A prior case closely matches your product’s materials, function, and other relevant facts. | Another product’s ruling does not automatically decide your product’s classification. |
| Informal import-specialist assistance | You need help identifying a path or agency contact. | Informal advice is not binding. |
| CBP binding ruling | You need an authoritative determination for the facts presented. | It applies to the facts and request addressed; provide accurate, complete product information. |
| Licensed customs broker | You want professional support with classification, entry filing, or import procedures. | A broker is optional, and the service scope should be confirmed; the importer retains responsibility. |
When considering a broker, ask about experience with the relevant product or industry and confirm whether the work includes classification, entry filing, or both. The USITC’s broker guidance is a starting point for understanding that option.
Quick Recap
What to verify before using a code
- Confirm that you are using the current HTS revision, not an outdated print edition or saved page.
- Make sure the product description matches the provision’s legal wording and any relevant notes—not merely a similar search term.
- Distinguish the general duty rate from the treatment that applies to the product’s origin and any qualifying program.
- Check for applicable Chapter 99 provisions and other measures that may affect the shipment but are not fully represented by the HTS line.
- Keep the facts used for classification and any relevant ruling or professional advice with your import records.
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