How is the US import duty on my product calculated?

Duty combines the base HTS rate (general column) with any applicable Chapter 99 additional duties (Section 301, IEEPA, reciprocal tariffs). Duty uses the latest USITC HTS export and is reconciled against Federal Register notices. CBP makes the binding determination at entry.

Does Duty evaluate antidumping (AD) or countervailing (CVD) duties?

Not by default. AD/CVD and product-specific exclusions require case-by-case review. Duty surfaces Chapter 99 and standard column rates; AD/CVD must be evaluated separately.

Where does the tariff data come from?

Base rates and HTS descriptions come from the USITC Harmonized Tariff Schedule (HTS) export. Policy changes and Section 301/IEEPA actions come from the Federal Register. Every computed rate can be traced back to its source record.

Can I compare origins like Vietnam, Mexico, India against China?

Yes. The compare view evaluates the same HS code against a configurable list (default: CN, VN, MX, IN, TH, ID, KR, JP, HK, DE, TW, MY, BD, CA), applying each country-specific Chapter 99 overlay.

§ US IMPORT DUTY · CANDIDATES FIRST 2026HTSRev6 · Apr 26, 2026

How much duty do I pay into the US?

Describe your product, enter unit value and quantity — Duty shows HTS candidates and estimates the landing duty for the currently selected classification.

Updated Apr 24, 2026 (2026HTSRev6) · USITC HTS + Federal Register

TRY

§ DUTY · CANDIDATE Selected from 1 search candidates · USITC data

WEAK MATCH — review below · 1.00

SELECTED HTS CANDIDATE

3815.90.20.00

Of mercury or of molybdenum

Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: · Other: · Of mercury or of molybdenum

CLASSIFICATION CONFIDENCE

Assumptions

The selected result assumes the material and construction match the HTS path.
The selected HTS row is a residual "Other" provision and needs fact review.

Questions to confirm

What is the finished article and how is it used?
What is the dominant outer material and construction?

SELECTED CANDIDATE ESTIMATE $2,780 · 27.8%

PER UNIT $2,780.00

On 1 units of 3815.90.20.00 from CN

Estimated duty by origin

COUNTRYBASE§301IEEPADUTY OWED

China · current 2.8% 25% 0% $2,780

Japan · best 2.8% 0% 0% $280

Germany 2.8% 0% 0% $280

Canada 2.8% 0% 0% $280

South Korea 2.8% 0% 0% $280

GB 2.8% 0% 0% $280

Switching CN → JP saves $2,500 on this $10,000 shipment.

Candidate match basis

3815.90.20.00

Of mercury or of molybdenum

Match strength · 1.00