An HTS (Harmonized Tariff Schedule) code is a 10-digit classification number used by US Customs and Border Protection to identify imported goods and determine applicable duty rates. The first 6 digits are standardized internationally under the Harmonized System, while the last 4 digits are specific to the United States.

How are US tariff rates determined?

US tariff rates are set by Congress and administered by CBP. The base MFN (Most Favored Nation) rate applies to most trading partners. Additional special tariffs — such as Section 301 (China), Section 232 (steel and aluminum), and Section 122 (temporary global surcharge, 10–15% per Proclamation 11012) — may apply on top of the base rate. Note that Section 122 does not stack with Section 232: goods already subject to §232 actions are excluded from the §122 surcharge.

What are Section 301 tariffs?

Section 301 tariffs are additional duties imposed on Chinese goods under the Trade Act of 1974, in response to unfair trade practices. They range from 7.5% to 100% depending on the product category and apply on top of the standard MFN duty rate. Four separate lists cover approximately $370 billion of annual imports.

How do I find the tariff rate for my product?

Use the search bar on this site to describe your product in plain English — our AI identifies the correct HTS code and shows all applicable duty rates including base MFN, Section 301, Section 232, and any other overlays. You can also browse by HTS chapter or product category.

What is a landed cost?

Landed cost is the total cost of importing a product to its destination, including the product price (FOB), ocean or air freight, insurance, US Customs duties, Merchandise Processing Fee (MPF), Harbor Maintenance Fee (HMF), and any other applicable surcharges. It represents the true cost of an imported good before domestic distribution.

US Tariff Rates on Imports from Mexico

Mexico-origin imports split sharply by USMCA compliance: goods that meet the agreement's rules of origin enter at 0% MFN with no Section 122 surcharge, while non-USMCA-compliant goods carry a 25% IEEPA-derived surtax (10% on certain energy / potash) on top of any other applicable duty.

Last reviewed May 4, 2026 · Live rate updates tracked on /pulse.

Current rates

USMCA-compliant goods

USMCA (PL 116-113)

Most consumer goods, autos meeting RVC + LVC, agricultural products meeting origin rules.

0% MFN

Non-USMCA general

EO 14195 / IEEPA · effective Feb 4, 2025

Surtax on goods not qualifying under USMCA; stacks on top of MFN where MFN > 0.

25%

Non-USMCA energy / potash carve-out

EO 14195 (modified) · effective Feb 4, 2025

10%

Last verified and sources

Last verified: May 4, 2026

Rates and trade context on this page are checked against official tariff, customs, trade-policy, and import-data sources. Use the calculator for an item-specific duty stack before making entry, quote, or purchase decisions.

USITC HTS

Harmonized Tariff Schedule classifications and base duty rates.

Federal Register

Presidential proclamations, trade-remedy notices, and rule changes.

CBP

Customs entry, fee, ruling, and enforcement guidance.

USTR

Section 301 and trade-policy program source material.

Census trade data

US import value and origin-country trade data.

USMCA qualification — what actually matters

USMCA preference is not automatic by country of origin. Your goods need to meet the agreement's specific rules of origin: regional value content (RVC) for tariff-shifted manufactures, transformation tests for certain products, and labor value content (LVC) for autos.

If your supplier provides a USMCA Certification of Origin and the product genuinely qualifies, the import enters at 0% MFN with no IEEPA surtax. If the certification is absent or the product fails its origin rule, the IEEPA 25% (or 10% on covered energy) attaches.

Auto LVC: 40–45% of vehicle value must be made by workers earning ≥ $16/hour.
Steel/aluminum content rules: 70% of an OEM's purchases must be North American.
RVC thresholds vary by HTS chapter — check the agreement Annex 4-B.

Common audit gotchas

Brokers frequently file Mexico-origin entries claiming USMCA without the supplier-side certification on file. CBP audits look for the signed certification — if the importer can't produce it, the IEEPA surtax is owed retroactively with interest.

Audit your Mexico entries

If you've imported from Mexico in the last 12 months, our /audit endpoint will replay each line against the USMCA rule set + IEEPA surtax and flag any line where the declared duty doesn't match what the rate stack actually requires. Useful before a CBP CF-28 lands.

Worked example — Auto part from Mexico — USMCA-compliant

Auto part HTS 8708.99.81.80, $5,000 customs value, USMCA Certification of Origin on file with valid LVC documentation.

Base MFN(0%)— USMCA preference

$0.00

IEEPA surtax(0%)— USMCA-compliant exemption

$0.00

MPF— 0.3464%

$17.32

HMF— 0.125% ocean only

$6.25

Total landed$23.57

Run this calculation against current rates with our landed cost calculator or audit a full 7501 with /v1/audit/entry.

FTA Checker — does my product qualify?

Audit your entries

Pulse — 24h FR ingestion SLO

Audit your entries against these rates

POST a 7501-shaped entry to /v1/audit/entry and get a line-by-line diff between your declared duty and what the current rate stack says you owe — including FR-cited provenance for every overlay applied. $0.05 per entry, Team and Enterprise.

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