Start with the HTS code, not only a product phrase
The Harmonized Tariff Schedule is the U.S. tariff schedule for imported merchandise. The international HS structure supplies the shared 4- and 6-digit product categories, then the United States subdivides them into 8-digit rate lines and 10-digit statistical reporting numbers. A product phrase such as "bag" or "footwear" is only a starting point; material, use, construction, and composition decide which legal heading and subheading should be reviewed.
Read the duty column before adding overlays
The HTS row gives the base duty treatment, including the Column 1 General rate, any listed special-program rate, and the Column 2 rate where applicable. That base row is not the whole landed-cost answer. Tariff Sentinel keeps three dimensions separate for each watched code: the official HTS base row, the country or trade-program overlay to review, and the date the source was checked. This avoids collapsing a current HTS rate, a China-origin review note, and a source-freshness warning into one overconfident number.
Add country of origin and program overlays
Country of origin can change the review path even when the HTS code stays the same. China-origin goods may require a Section 301 Chapter 99 check, steel and aluminum goods may require a Section 232 review, preference programs such as USMCA require rules-of-origin support, and AD/CVD orders can depend on product scope, country, producer, and exporter facts. Treat questions like "duty from China" as a duty-stack review, not as a simple country multiplier.
Watch the effective date and source freshness
A tariff notice can change treatment on a specific entry date, and an exclusion or review window can make the answer different for two shipments with the same HTS code. Saved-code alerts are useful because a code that looked safe last month can become expensive before the next shipment. The practical workflow is to save the code, keep the country and supplier facts with it, and re-check the official source text whenever the alert says a program or source page changed.
FAQ
What is an HTS code?
An HTS code is the U.S. import classification code used to organize merchandise, assign tariff rates, and collect import statistics. The first 4 and 6 digits follow the international HS structure, while the United States adds 8-digit rate lines and 10-digit statistical reporting numbers. The code should be selected from the legal HTS text, not guessed from a product nickname.
Is an HS code the same as an HTS code?
No. HS and HTS codes overlap at the first six digits because both use the international Harmonized System, but U.S. import entries use HTS numbers with U.S.-specific 8- and 10-digit detail. Export Schedule B numbers can also share the first six digits but differ at the U.S. statistical level.
How do I find the HTS code for a product?
Start with the product's material, use, construction, and composition, then search the current USITC HTS and read the heading, subheading, notes, and duty columns. Compare likely candidates rather than stopping at the first keyword match. For a filing decision, confirm the classification with a licensed customs broker, trade counsel, or CBP ruling.
Why can duty from China differ from the same HTS code from another country?
The base HTS duty may be the same, but country-origin programs can add or remove duty layers. A China-origin shipment may need Section 301 review, while a Mexico-origin shipment may need USMCA eligibility documentation, and another country may raise AD/CVD scope questions. Always pair the HTS code with origin, supplier facts, and entry date.
Does an import-duty calculator include AD/CVD automatically?
It should not treat AD/CVD as an automatic percentage from the HTS code alone. AD/CVD scope is usually controlled by the order text, product description, country, and producer/exporter facts. A calculator can flag possible risk and link official sources, but final coverage and cash-deposit treatment need source and broker review.
Can this replace a customs broker?
No. It provides source-linked estimates and monitoring, not binding customs advice.
Why do rates differ by country?
Country of origin can trigger trade-remedy overlays or preference programs. Eligibility depends on rules and documents.
Sources verified for this guide
- USITC: About the Harmonized Tariff Schedule (retrieved Jun 4, 2026)
- USITC: Harmonized Tariff Information (retrieved Jun 4, 2026)
- USITC FAQ: Are export Schedule B numbers the same as import HTS numbers? (retrieved Jun 4, 2026)
- USTR: China Section 301 tariff actions and exclusion process (retrieved Jun 4, 2026)
- CBP: Trade Remedies (retrieved Jun 4, 2026)
- Commerce ACCESS — AD/CVD case records and scope filings (retrieved Jun 4, 2026)
Last verified: Jun 22, 2026. The program rules, review windows, Chapter 99 references, and monitoring caveats above were checked against the cited official sources on that date. Always confirm the controlling source text for your specific code and entry date before filing or sourcing decisions.
Use this guide with a saved code
The safest workflow is to pair the concept in this guide with a concrete HTS code, country of origin, supplier facts, and planned entry date. That keeps the discussion anchored in official source text instead of generic tariff commentary.
When a saved-code alert fires, use the guide to decide which question to ask first: whether the HTS code is still appropriate, whether a trade-remedy overlay applies, whether an exclusion or preference program changes treatment, or whether the issue needs broker review before filing.