HS (Harmonized System) code is an internationally standardized product classification system developed by the World Customs Organization (WCO), adopted by over 200 countries. It consists of 6 digits globally, with countries extending to 10 digits (e.g., US HTS 10-digit, UK Commodity Code 10-digit, China HS 10-digit).

How accurate is AI HS code classification?

HSBot is built on official customs policy and real customs data. For common products, classification accuracy exceeds 95%. AI results are for reference only—actual declarations should be verified with customs authorities. Combining product details (material, usage, composition) improves accuracy.

What countries does HSBot support?

HSBot currently supports US HTS codes and UK tariff codes (import classification) and China HS codes (export classification), covering the most common China-US and China-UK trade scenarios. More countries including EU, Japan, Vietnam, and Mexico are coming soon.

How many free queries do I get per day?

Free users can make 20 classification queries per day. The quota resets at 00:00 Beijing time daily. Contact us for enterprise plans with higher limits and API access.

What is Section 232 tariff?

Section 232 tariff is an additional US import duty on steel, aluminum, and copper products based on national security grounds. HSBot automatically calculates applicable Section 232 rates based on HS code prefixes and exporting country.

What is Section 301 tariff?

Section 301 tariff is an additional US import duty on certain products from China, in response to trade practices. HSBot automatically identifies applicable Section 301 rates and checks for tariff exclusions.

Why the Same Product Gets Different HS Codes (and How to Pick the Right One)

A common frustration: send the same product to three freight forwarders and get three different HS codes — and three different duty quotes. This is not random. This guide explains why it happens, what part is legitimate, and how to pick the code you can defend.

✅ [Verified – WCO]: The HS is a 6-digit international standard administered by the World Customs Organization; over 200 countries use it, covering ~98% of world trade.

First 6 digits are global; the last 4 are where they diverge

Digits 1–6: Identical in every country. A wooden chair is in the 9401.6x family everywhere.
Digits 7–10: Country-specific subheadings and the attached duty rate. The U.S. 10-digit breakout differs from China's 10-digit breakout.

So "different codes" often means: the same 6-digit class, different country subheading — or, more expensively, different origin treatment (China vs. Vietnam changes the whole 301 math).

Why even the first 6 digits can vary

Classification follows the General Rules of Interpretation (GRI):

GRI 1: Class by heading text and legal notes.
GRI 3: For composite goods, classify by principal function / essential character.

Real examples: - A bluetooth earphone with a power bank → 8517 (communication equipment) by principal function, not 8506 (batteries). - Wooden frame + fabric seat → 9401.61; metal frame + padded → could be 9401.71. - Composite-material products sit in a gray zone where experience and available info drive the answer.

⚠️ [Inferred]: Variation is highest for composite, multi-function, and new-technology products — exactly where duty differences are largest.

What is legitimate vs. what is a mistake

Situation	Legitimate?
Different country subheadings (6 digits same)	Yes — expected
Different origin → different 301 treatment	Yes — correct
Same product, different 6-digit class	Usually a mistake or ambiguity
Code chosen to minimize duty beyond facts	Non-compliant risk

How to raise your confidence

State declaration elements clearly: material composition (to 0.1%), function, use, construction.
Check the tariff's legal notes for your chapter — they are binding.
Request a binding ruling (CBP Binding Ruling, or China 预归类决定书) for high-value or ambiguous products — it gives a defensible answer.
Keep a classification record (SKU → description → elements → code) so future shipments stay consistent.

Transparent classification beats a bare code

The risk is not just "wrong code" — it is getting a code with no stated basis, so you cannot tell if it is stable. HSBot (zeewo.tech) returns, with each code: the classification basis (e.g., "solid wood frame · household seating · non-reclining → 9401.61"), boundary hints (when it would shift to another code), and a confidence level — so when you take it to a forwarder you can reconcile, not guess.

✅ [Verified – HSBot]: Returns basis + boundaries + confidence; free tier, no registration.

FAQ

Q: Can I just use my marketplace category? A: No — it is not a legal classification and won't hold up at customs.

Q: Who is liable for the code? A: The importer/filer is responsible for correct classification on the entry.

Q: When should I get a binding ruling? A: For high-value, sensitive, or genuinely ambiguous products where a misclassification would be costly.