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Policy Intelligence

U.S. Import Tariff Calculator

Gateway continuously monitors official U.S. trade actions and implements changes as they are published.

Policy changes are reflected in the Tariff Simulator within 24–48 hours where applicable.

Last policy action: Jan 4, 2026

Monitoring: Federal Register, White House, USTR, USITC

Reviewed by Gateway: Feb 3, 2026
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U.S. Import Tariff Calculator

See exactly why your China tariff is 25%, 35%, or 45% — line by line

USITC 2026

Duty Analysis

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Estimated Tariff Exposure

$0.00

Enter product, value & country to estimate

Import Cost Breakdown

Base Duty
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Section 301
China only
Section 232
Steel/Aluminum only
FTA Savings
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Effective Duty RateEnter details
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USITC-Verified·2026 Rates

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Enter HTS code and value above to see country-by-country tariff exposure

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Map shows policy-level risk tiers. Calculate a tariff above to see actual duty exposure by country.

Data Sources & Methodology

Authoritative data, updated daily, verified against official government sources

USITC HTS Database

Official Harmonized Tariff Schedule maintained by the U.S. International Trade Commission. Base duty rates for 30,000+ product classifications.

hts.usitc.gov

Federal Register

Official daily publication for Presidential proclamations, executive orders, and agency rules. Source for Section 301, 232, and IEEPA tariff actions.

federalregister.gov

USTR Section 301

Office of the U.S. Trade Representative. Authoritative source for China tariff lists, exclusions, and trade remedy actions under Section 301.

ustr.gov
30,000+
HTS Codes Indexed
Live
Policy Updates
Gateway
AI Intelligence
200+
Countries Covered

How We Calculate Tariffs

Data Pipeline

  • Base duty rates sourced directly from USITC Harmonized Tariff Schedule (General rates of duty, Column 1)
  • Section 301 China tariffs mapped to Lists 1-4A per USTR proclamations and Federal Register notices
  • Section 232 steel/aluminum duties applied per Chapter 99 subheadings (9903.80.xx)
  • IEEPA/Reciprocal tariffs tracked via Presidential proclamations and Executive Orders

Real-Time Policy Intelligence

  • Automated Federal Register monitoring for tariff-related actions from USTR, BIS, CBP, and ITC
  • Gateway intelligence extracts affected HTS chapters, countries, effective dates, and duty rates
  • Human review and approval before policy changes are reflected in calculations
  • Changelog published with citations to official source documents

Official Data Sources

U.S. International Trade CommissionOffice of the U.S. Trade RepresentativeU.S. Customs and Border ProtectionU.S. Department of CommerceNational Archives and Records Administration

Disclaimer: This calculator provides duty estimates for planning purposes only. Actual duties may vary based on CBP classification rulings, valuation adjustments, AD/CVD orders, and other factors. Gateway Lines is not a licensed customs broker. Please always seek guidance and advice from a licensed customs broker for official determinations.

Data last synchronized: February 2026·Policy intelligence reviewed by Gateway trade compliance team

Frequently Asked Questions

Common questions about US import tariffs and duties

What do I get with a free Gateway account?

Gateway accounts unlock unlimited tariff searches, saved HTS codes, exportable duty reports, country comparison tools, AI-powered tariff explanations, and real-time rate change alerts. All features are completely free for importers.

What is Section 301 tariff?

Section 301 tariffs are additional duties on Chinese imports under the Trade Act of 1974, ranging from 7.5% to 25% depending on the product list (Lists 1-4A). Gateway shows exactly which list your product is on.

What is Section 232 tariff?

Section 232 tariffs are national security duties on steel and aluminum imports. Rates are set by presidential proclamation and apply to most countries. Gateway displays the current rate for your specific product and origin country.

How do I find my HTS code?

Use Gateway's intelligent search to describe your product in plain English. Our AI matches your description to the correct HTS classification from our database of 30,000+ codes validated against USITC HTS 2026.

Is the tariff calculator free?

Yes, Gateway Tariff Calculator is completely free. Search HTS codes, calculate Section 301 and IEEPA tariffs, compare sourcing countries, and get AI-powered explanations at no cost.

How accurate is this calculator?

Gateway pulls rates directly from USITC HTS 2026 database and updates weekly. Our Chapter 99 coverage includes Section 301, Section 232, and IEEPA tariffs with official source citations.