HS codes for China imports: how to find the right code and use it

What an HS code actually is

The Harmonized System is an international classification framework maintained by the World Customs Organization and used by over 200 countries. Every tradeable product maps to a 6-digit HS code. Countries then extend it with extra digits for their national tariff schedules.

In the US, the full code is 10 digits and is called the HTS (Harmonized Tariff Schedule) number. Reading one from left to right:

• First 2 digits: the chapter. Chapter 61 is knitted or crocheted clothing, chapter 84 is machinery, chapter 85 is electrical equipment.
• Digits 3 and 4: the heading, a more specific product category within the chapter.
• Digits 5 and 6: the subheading. These first 6 digits are the international HS code, the same in China and the US.
• Digits 7 and 8: the US tariff line, which carries the duty rate.
• Digits 9 and 10: a statistical suffix. It does not change the duty rate, but it must be on the entry.

The duty rate, any additional tariffs on goods from China, and any trade preference are all tied to the HTS number, not to a product description. Two items that look similar can have different codes and very different duty rates.

How to find your HTS code, step by step

The authoritative source is the USITC Harmonized Tariff Schedule at hts.usitc.gov. It is free and updated whenever the schedule changes.

• Search by keyword (for example 'ceramic mug') or browse by chapter. Start from what the product is made of and what it does: the schedule is organized by material (textiles, metals, plastics) and by function (machinery, electrical equipment).
• Read the section and chapter notes, not just the heading text. The notes are legally binding definitions, and a product that sounds like it fits a heading may be excluded by a note.
• Pick the most specific subheading that accurately describes the goods. The schedule runs from general to specific, and a vague high-level code is a misclassification flag.
• Read the 'General' column. That is the normal (MFN) duty rate that applies to goods from China.
• Check whether the code carries additional duties for Chinese-origin goods, such as Section 301. These are listed in chapter 99 of the schedule and referenced from the tariff line.
• Note the full 10-digit code including the statistical suffix.

If you are unsure between two codes, compare the duty rates for both and the additional duties for China. The difference can be significant, which is exactly why the choice has to be defensible rather than the cheaper one. Searching CBP's rulings database (CROSS, at rulings.cbp.gov) for rulings on similar products is one of the best free ways to see how CBP itself has classified comparable goods.

Common misclassification traps

Misclassification is the most common customs problem for small importers. It is almost always unintentional, but customs still bills the difference.

• Using a supplier-suggested code without verifying it. Chinese suppliers often put an HS code on the commercial invoice. It follows the same 6-digit international base, but the Chinese export code and the US import code can differ past the sixth digit.
• Using a 6-digit HS code instead of the full 10-digit HTS number. A 6-digit code is not valid for a US entry.
• Choosing a code by product name rather than by material, construction, or function. Some headings classify by what a product is made of, others by what it does: a plastic bucket and a plastic storage box can sit in different codes.
• Missing a chapter note that excludes your product. A heading can look right while a note at the start of the chapter rules your product out.
• Guessing on composite goods. A product made of several materials, or a set of different items, is classified by the component that gives it its essential character, or by specific rules for sets. This is where most classification disputes arise.
• Reusing a code from a prior shipment without checking whether it changed. The schedule is revised periodically.

What happens if the HTS code is wrong

CBP can review entries after the fact and liquidate them at the correct rate. The consequences of a wrong code:

• Back duties: if your goods were entered at a lower rate than the correct one, you owe the difference plus interest.
• Penalties: under 19 U.S.C. 1592, penalties for inaccurate entries scale with culpability, from negligence to gross negligence to fraud. Deliberately using a lower-duty code is treated far more severely than an honest mistake, and a voluntary prior disclosure before CBP finds the error reduces the exposure.
• Holds: if a shipment is flagged for a classification review, it stays at the port until the question is resolved, and storage charges run while you wait.
• Knock-on problems: some codes carry marking, permit, or partner agency requirements (FDA, CPSC, FCC). A wrong code can mean the goods were not prepared for the rules that actually apply.

Overpaying is a quieter cost. A code with a higher rate than the correct one costs you money on every entry until someone notices, and refunds require a protest or post-summary correction within the deadlines.

Confirming your code before you ship

For a one-off or first shipment, a licensed customs broker can review your product, invoice, and intended use and confirm the code. That is the faster and more common path for small importers, and it is normally part of the service when you use a full-service forwarder.

For a product you import regularly, a binding ruling from CBP gives you certainty. You describe the product in detail, CBP classifies it, and the ruling binds CBP for future entries of that product. Requests are free and filed online through CBP's rulings program. A binding ruling is worth requesting when:

• The product could plausibly fit more than one code and the duty rates differ significantly.
• The product is composite, multi-function, or made of unusual materials.
• Order volumes are large enough that a small rate difference adds up.
• You want certainty before committing to a large sourcing order.

A ruling takes weeks rather than days, so it suits ongoing programs better than an urgent first shipment. Either way, confirm before the goods ship, not after they arrive. A hold at the port is far more expensive than getting the code right in advance. Once you have the code, the landed cost guide shows how the duty fits into the full cost of an order.