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 25, 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.

TRY

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

WEAK MATCH — review below · 1.00

SELECTED HTS CANDIDATE

8511.10.00.00

Spark plugs

Electrical ignition or starting equipment of a kind used for spark-ignition or compression-ignition internal combustion engines (for example, ignition magnetos, magneto-dynamos, ignition coils, spark plugs and glow plugs, starter motors); generators (for example, dynamos, alternators) and cut-outs of a kind used in conjunction with such engines; parts thereof: · Spark plugs

CLASSIFICATION CONFIDENCE

Assumptions

The selected result assumes the material and construction match the HTS path.

Questions to confirm

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

SELECTED CANDIDATE ESTIMATE $2,750 · 27.5%

PER UNIT $2,750.00

On 1 units of 8511.10.00.00 from CN

Estimated duty by origin

COUNTRYBASE§301IEEPADUTY OWED

China · current 2.5% 25% 0% $2,750

Mexico · best 2.5% 0% 0% $250

Vietnam 2.5% 0% 0% $250

Taiwan 2.5% 0% 0% $250

Malaysia 2.5% 0% 0% $250

Thailand 2.5% 0% 0% $250

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

Candidate match basis

8511.10.00.00

Spark plugs

Match strength · 1.00

How much duty do I pay into the US?

RECENT QUERIES

Estimated duty by origin