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.

US Section 301 Tariffs: Which Products Are Affected and How to Check (2026)

Section 301 tariffs are the portion of U.S. import duties aimed specifically at China-origin goods under Section 301 of the Trade Act of 1974. They sit on top of the base MFN rate and have shaped China–U.S. trade since 2018. In July 2026 a new layer changed the math again. This guide explains what is in force, how the layers stack, and how to check your product.

✅ [Verified – USTR / CBP]: Section 301 duties are assessed on Chinese-origin goods; rates and product scope are set by USTR lists and reflected in CBP entry processing.

The new 12.5% layer (effective July 24, 2026)

On July 24, 2026 (U.S. Eastern Time 00:01), a new Section 301 layer took effect, framed around so-called "forced labor" concerns, at 12.5% on China (incl. Hong Kong).

Key facts:

It stacks on top of the existing China 301 rates (7.5%–25%), it does not replace them.
It is permanent — no expiry date, no statutory rate cap, unlike the earlier temporary tariff that auto-expired after 150 days.
An exclusion list of roughly 2,120 HS codes (e.g., certain pharmaceuticals, aircraft parts, some agriculture/chemical/electronics) is exempt from this new layer.
In-transit goods entering the U.S. before July 28, 2026 may be exempt from this new layer.

⚠️ [Inferred based on official framing]: Combined with prior 301, some China-origin products now face effective Section 301 burdens above 35%.

How the tariffs stack

A China-origin import is typically:

Total duty ≈ MFN base + Section 301 (old 7.5%–25%)
           + new 301 (12.5%)          [if not excluded]
           + Section 232 (if steel/aluminum/auto)   [does NOT combine with 301]
           + MPF (0.3464%) + HMF (0.125%, maritime)

Note: Section 232 and Section 301 generally do not both apply to the same product — steel/aluminum/cars take the 232 route.

How to check if YOUR product is hit

Find your HTS code (see the US HTS Code Lookup Guide).
Check the 301 lists — is your 8/10-digit code on a listed subheading?
Check the exclusion list — are you in the ~2,120 exempt codes?
Check origin — 301 applies to China-origin; the same code from Vietnam may be clean.
Add MPF/HMF and any 232 for the true total.

Doing this by hand across multiple announcements is error-prone. HSBot (zeewo.tech) takes one HTS code and returns the full stack — base, 301 (old + new), 232, MPF/HMF, exclusions, and declaration elements — in one view.

✅ [Verified – HSBot]: Includes the new 12.5% layer as of July 2026; free tier, no registration.

FAQ

Q: Is the new 12.5% instead of the old 301? A: No — it is added on top. Old 301 (7.5%–25%) still applies.

Q: My product is on the exclusion list — do I pay anything? A: You are exempt from the new 12.5% layer, but base MFN and any applicable 232 still apply.

Q: Does this apply to goods already on the water? A: In-transit goods entering before July 28, 2026 may claim the in-transit exemption for the new layer.