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) and Section 232 (steel and aluminum) — may apply on top of the base rate. The temporary Section 122 global surcharge (Proclamation 11012) expired by operation of law on July 24, 2026 and is owed only on entries filed before that date.

What are Section 301 tariffs?

Section 301 tariffs are additional duties imposed on Chinese goods under the Trade Act of 1974. The currently registered range is 7.5% to 100%, depending on the product category and effective date, and applies on top of the standard MFN duty rate. Confirm the result and its source for the specific HTS code before filing.

What are Section 232 tariffs?

Section 232 tariffs are national-security duties imposed under the Trade Expansion Act of 1962. As of 2026-08-17, registered coverage includes steel, aluminum, copper, wood products, and automobiles and parts, with rates, quotas, and caps that vary by product and origin. Confirm the current result for the specific HTS code before filing.

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.

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) and Section 232 (steel and aluminum) — may apply on top of the base rate. The temporary Section 122 global surcharge (Proclamation 11012) expired by operation of law on July 24, 2026 and is owed only on entries filed before that date.

What are Section 301 tariffs?

Section 301 tariffs are additional duties imposed on Chinese goods under the Trade Act of 1974. The currently registered range is 7.5% to 100%, depending on the product category and effective date, and applies on top of the standard MFN duty rate. Confirm the result and its source for the specific HTS code before filing.

What are Section 232 tariffs?

Section 232 tariffs are national-security duties imposed under the Trade Expansion Act of 1962. As of 2026-08-17, registered coverage includes steel, aluminum, copper, wood products, and automobiles and parts, with rates, quotas, and caps that vary by product and origin. Confirm the current result for the specific HTS code before filing.

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.

Best HTS code lookup

Best HTS Code Lookup Tools

Compare HTS code lookup tools for product classification, tariff-rate checks, CROSS ruling research, and broker workflows.

Checked October 8, 2026Published by US Tariff Rates, one of the products compared

Look up an HTS code API options

How this comparison was made

This page compares HTS code lookup tools on what each documents: description search, access to the legal tariff text, ruling research and the duty consequence of a code. Each statement about another tool links the page it was read from.

Every statement about another product restates that product's own public page as read on October 8, 2026, and links it. Where a vendor does not publish a fact, the table says so.
Statements about US Tariff Rates come from its published plans and API documentation, linked the same way.
Limits: we did not buy or test the paid tiers of other products; prices and features change after the check date; we publish US Tariff Rates, so weigh our own row accordingly.

What each option is compared on

Searches product descriptions and HTS numbers.

Keeps the user close to official HTS language and chapter notes.

Shows duty consequences after the code is selected.

Supports ruling research when a classification is ambiguous.

Side-by-side facts

As published by each product on October 8, 2026. Each cell links the page it was read from.

Product	Published price	Free access	API	US duty layers stated	Coverage
US Tariff Rates US import tariff lookup, landed-cost calculator and REST API for HTS codes. Each duty program is returned as its own layer rather than one combined rate.	Free $0.00; Pro $49.00 a month or $399.00 a year; Team $199.00 a month or $1,590.00 a year; Enterprise quoted. source	Free plan: 50 API requests a month, 10 rows per bulk lookup, 5 watchlist alerts. source	Public REST documentation and an OpenAPI 3.1 file. Hosted MCP server at mcp.ustariffrates.com, authenticated with the same API key. source	Lookup responses return a rate_stack of per-program duty layers (for example, base_mfn, section_122, section_232 and section_301), plus total_additional_pct and total_estimated. source	US imports only (US HTS). source
USITC HTS search and HTS REST API The official online Harmonized Tariff Schedule, maintained by the USITC Office of Tariff Affairs and Trade Agreements.	No fee stated; search and API answered without login or key. source	Public, no account. source	REST API at hts.usitc.gov/reststop answered without a key: /search returns JSON; /exportList returns JSON or CSV. source	Publishes Chapter 99 headings (for example 9903.88.15) as separate HTS entries; does not compute a combined duty for a product. source	US only. source
CBP CROSS Searchable database of published CBP rulings.	No fee stated; public search without login. source	Public, no account. source	No published API documentation. source	Not applicable: searches ruling text; no duty calculation. source	US only; published rulings. source
Gaia Dynamics AI tools for HTS classification and tariff calculation for customs brokers and importers.	Billed yearly: Free $0; Starter $99 a month; Pro $379 a month; Advanced $1,399 a month; Enterprise custom. Credit-based. source	Free plan (30 credits a year) and a 14-day trial without a card. source	API documentation is granted on request. source	States trade remedy duties under Sections 201, 232 and 301; Chapter 99 not named. source	No country count stated; HS lookup is for goods imported into the United States. source

Options by job

US Tariff Rates HTS code lookup

Use when: You have a product description and need candidate HTS codes with their duty layers.

Search HTS codes

Documented

Searches HTS codes by plain-English product description.
Shows base duty and each additional duty program for the selected code.
The same lookup is available through the calculator, bulk lookup, API and watchlist.

Limits

Complex product decisions should be checked against official notes and rulings.
Not a binding classification ruling; only CBP issues those.
AD/CVD results (risk_layers) are screening context with the underlying orders, not entry liability. source

USITC HTS search

Use when: You need the official HTS language, headings and chapter notes.

Open source

Documented

Official tariff schedule maintained by the USITC.
Headings, subheadings, chapter notes, duty text and a documented REST API.

Limits

Search is by keyword or number; it does not suggest codes from a product description.
Does not combine classification, landed cost, and alerts.
The search site renders in the browser with JavaScript. source

CBP CROSS

Use when: You need prior CBP classification rulings for similar products.

Open source

Documented

Searches published CBP ruling letters.
Shows how Customs analyzed similar merchandise.

Limits

Rulings are fact-specific and may not apply to a different product configuration.
Not a tariff calculator or current-rate modeling tool.
Covers published rulings only. source

Gaia Dynamics

Use when: You are evaluating AI-assisted HTS classification with a free plan or trial.

Open source

Documented

Published price tiers and a free plan.
States Section 201, 232 and 301 trade remedy duties.

Limits

API documentation is granted on request.

Broker classification review

Use when: The product is ambiguous, regulated, or carries high duty.

Documented

Adds professional judgment around General Rules of Interpretation and product facts.
Precedes binding ruling requests or high-value imports.

Limits

Usually slower and more expensive than self-serve lookup for early screening.

Official sources to verify

Use these primary sources when a tariff decision needs legal, operational, or audit review.

USITC Harmonized Tariff Schedule search CBP CROSS rulings search CBP rulings and legal decisions

FAQ

What is the best HTS code lookup tool?

Use the tool that matches the question. US Tariff Rates searches by product description and shows the duty layers of each code. USITC HTS is the official tariff schedule text. CBP CROSS searches prior classification rulings.

Is an HTS lookup different from an HS code lookup?

Yes. HS codes are the international six-digit base. HTS codes are the US ten-digit classification used for US import duty, statistical reporting, and many special tariff measures.

Should I search CROSS before choosing an HTS code?

For common products, an HTS search may be enough to screen the likely code. For ambiguous or high-value products, CROSS rulings can reveal how CBP has treated similar merchandise.

Related guides and tools

Tariff classification guide CBP rulings search Best import duty calculators

Best HTS Code Lookup Tools

How this comparison was made

What each option is compared on

Side-by-side facts

Options by job

US Tariff Rates HTS code lookup

Documented

Limits

USITC HTS search

Documented

Limits

CBP CROSS

Documented

Limits

Gaia Dynamics

Documented

Limits

Broker classification review

Documented

Limits

Official sources to verify

FAQ

What is the best HTS code lookup tool?

Is an HTS lookup different from an HS code lookup?

Should I search CROSS before choosing an HTS code?

HTS lookup tools FAQ

Frequently asked questions

HTS lookup tools FAQ

Frequently asked questions