US HTS Search & Stacked Tariff Finder
Calculate base MFN duty plus Section 301 (China) and Section 232 (Steel/Alu) tariffs.
Authority: USTR / USITC
Instrument: USTR-2026-0265 (Forced Labor Action)
Important Caveats
- Section 301 and 232 tariffs are additive to the base MFN rate.
- Stacking logic applied per CSMS #18-000409 and 19 CFR § 141.61.
Accuracy is verified against official sources but is provided for guidance only. Consult a licensed customs broker or legal counsel for binding classifications.
Indicative calculation for planning only. Verify against the applicable USTR / USITC notification in force on your shipment date before filing or contracting.
Section 301/232 Regulatory Notice
Calculations include current Section 301 (China) and Section 232 (Steel/Aluminum) tariffs. Please consult current USTR and CBP Federal Register notices for the latest enforcement actions and specific Chapter 99 exclusion rules.
Laptops, tablets, weighing not more than 10 kg
Change Log
- Section 232 steel and aluminium rows corrected to 50%, the rate in force since 4 June 2025 (Presidential Proclamation of 3 June 2025). UK-origin goods remain at 25%; check origin before relying on the figure.
- Integrated Section 301 Forced Labor Action (Notice USTR-2026-0265/0266).
- Imposed new 10% to 12.5% Section 301 duties across 60+ economies to combat forced labor imports.
- Established specific exemptions and netting rules for economies with Reciprocal Trade Agreements (ART).
- Updated Chapter 99 (9903.05.20 - 9903.05.57) to include stacking logic for new global forced labor tariffs.
- Synchronized smartphones, EVs, and semiconductor rates with the latest Presidentially directed actions.
- Updated base MFN rates for over 100 chapters based on USITC 2026 R15 schedule.
- Synchronized Section 301 China tariffs with latest USTR exclusions and extensions.
- Validated Section 232 Steel/Aluminum stacking logic for Chapter 72 and 73 items.
Data Validation Status
All HTS codes and rates in this tool are cross-validated against the official USITC 2026 R15 database. Stacked tariff logic (Section 301/232) is verified per CSMS #18-000409. Last integrity check: 2026-08-10.
Coverage check: PASS - no duplicate, malformed, or out-of-range entries.
How the composite US duty rate stacks
| Layer | Legal basis | Applies to | Where to verify |
|---|---|---|---|
| 1. General (Column 1) rate | HTSUS Chapters 1 to 97 | Every import, unless a free trade agreement or preference programme applies | USITC HTS |
| 2. Section 301 additional duty | Trade Act of 1974, USTR actions | Products of China on the USTR lists, by HTS code | USTR notices; HTS Chapter 99, subchapter III |
| 3. Section 232 additional duty | Trade Expansion Act of 1962, presidential proclamations | Steel, aluminium and other covered products and derivatives, by HTS code | Proclamations; HTS Chapter 99, subchapter III; CBP guidance |
| 4. Other Chapter 99 duties | Other orders in force, for example Section 122 surcharges (IEEPA tariffs ended Feb 2026) | Depends on the order, often by country of origin | HTS Chapter 99; CBP CSMS messages |
| 5. Antidumping / countervailing duty | Tariff Act of 1930, Commerce and USITC orders | Specific product, country and often manufacturer, deposit rate per case | Commerce ADCVD case pages; CBP ACE |
| Fees (not duties): MPF, HMF | 19 CFR 24.23 and 24.24 | MPF on most formal entries; HMF on ocean shipments | CBP user fee notices |
Each duty percentage is normally applied to the customs value (transaction value, which for the US excludes international freight and insurance) and the layers are added together. Additional duty rates change often; this tool's rate table was last checked 2026-08-10. Confirm every layer against the current HTS revision and CBP guidance before entry.
Numerical Example: Worked import example: lithium-ion EV batteries from China
Rates are taken from this tool's rate table for illustration, not a ruling. Add any other Chapter 99 duty in force for the origin, then MPF (ad valorem with a minimum and maximum, set each CBP fiscal year) and, for ocean freight, HMF at 0.125% of value. Check the current HTS and CBP notices before entry.
Frequently asked questions
What is the US HTS?
The Harmonized Tariff Schedule of the United States (HTS) is the official 10-digit classification code used for all goods imported into the USA. The first 6 digits match the international HS; digits 7-8 identify the US statistical suffix; digits 9-10 are used for trade remedies and statistical purposes.
What is a Section 301 tariff?
Section 301 tariffs are additional US import duties imposed on goods from China under the Trade Act of 1974. They range from 7.5% to 100% depending on the HTS chapter and product list. They stack on top of the standard MFN duty rate and any antidumping/countervailing duties.
What is the US Section 232 tariff?
Section 232 tariffs are US national-security duties on steel, aluminium and other covered goods, set by presidential proclamation. Since 4 June 2025 steel and aluminium and their listed derivatives carry 50% (UK-origin goods 25%). Rates and product coverage change by proclamation, so check the current HTS Chapter 99 headings and CBP guidance before relying on a figure. They combine with the General duty rate and any Section 301 charges.
How do US import duties stack?
Start with the General (Column 1) rate for the 10-digit HTS code, then add each additional duty that applies to the product and origin: Section 301, Section 232, any other Chapter 99 duty, and any antidumping or countervailing duty order. Each percentage is normally applied to the customs value. MPF and HMF are user fees added on top, not duties.