How it works
From an ordinary HTS line to the additional tariff
USTR identifies products subject to the China Section 301 actions by eight- or ten-digit HTS subheading. In the current HTS, affected ordinary tariff lines can carry a note pointing to a Chapter 99 heading such as 9903.88.03 or 9903.91.06.
- Confirm classification. Enter the most specific US HTS code available.
- Confirm origin. Section 301 coverage in this beta requires China as the country of origin.
- Resolve the reference. The engine checks the selected line and its parent headings for explicit Chapter 99 references.
- Apply a verified rate. A percentage is added only when that reference has an explicit ad valorem formula in the same official schedule.
Conservative automation
What the calculator includes
Only explicit plus-percentage formulas attached to a China-origin measure are calculable.
The additional percentage is applied to the entered customs value and shown separately from the general duty.
An exclusion may require an exact ten-digit reporting number and a matching product description. It is never assumed from the code alone.
Section 122, separate Section 301 actions, AD/CVD and other Chapter 99 measures remain outside this release.
Exclusion check
Why a “possible exclusion” is not a zero rate
Current exclusions under headings 9903.88.69 and 9903.88.70 run through November 9, 2026, but their legal scope depends on the product descriptions in the Chapter 99 notes. The engine therefore calculates the supported Section 301 amount before exclusions and flags the exclusion for professional review.
Frequently asked questions
Section 301 lookup questions
Can I search with an HS code?
Use the US HTS number, ideally ten digits. A six-digit international HS code is usually not specific enough for a US duty decision.
Does shipping from another country avoid Section 301?
No. Country of origin is based on where the good originates under customs rules, not simply the country from which it is shipped.