Know the duty
before it’s owed.
Enter an HTS code, country of origin, and customs value to get an instant estimate of Column 1 duty, Section 301 and 232 tariffs, and MPF & HMF fees. Free, no login, built by Stable Software’s trade-engineering team.
Every line of the duty, in one number.
The calculator assembles the landed-duty picture the way a broker would: base rate, trade-remedy tariffs, and federal user fees, from an HTS code, a country of origin, and an entry date.
Duty by HTS + origin
Enter a 10-digit HTS code and country of origin to get the general Column 1 rate, the special rate when you claim an FTA, or the Column 2 rate for non-NTR origins.
Section 301 & 232 add-ons
Layers China Section 301 list tariffs, the Section 301 forced-labor duties by origin, and a Section 232 steel and aluminum estimate on top of the base rate, each line cited to its source.
MPF & HMF fees
Adds the Merchandise Processing Fee at 0.3464% (with its per-entry minimum and maximum) and the 0.125% Harbor Maintenance Fee on ocean shipments.
Preferential-rate aware
Offers a preference claim when the origin is a free-trade partner, applies the special rate, and drops MPF for qualifying programs.
Landed cost here means customs value plus duties and fees, excluding freight and insurance. Anti-dumping and countervailing (AD/CVD) duties are not included.
A genuinely useful tool, not a gated demo.
We built the estimator because importers and brokers ask the same question every day: what will this cost to bring in? So we made the answer free, and open to anyone.
Built by trade engineers
The estimator runs on live USITC tariff data and the Chapter 99 rules our team maintains, with every line cited to its legal source.
Free and open, no login
No account, no trial, no paywall. Open the calculator, run as many HTS codes as you like, and share the link with your team.
A window into the platform
It is the front door to Stable Software’s paid automation: duty drawback, reconciliation, entry audit, and denied party screening for teams doing this at entry-line scale.
Questions about tariff and landed cost calculations
How do I calculate landed cost for an import?
Start with the customs value, then add the duty at the HTS rate for the country of origin, any Chapter 99 tariffs such as Section 301 or Section 232, the Merchandise Processing Fee (MPF) and, for ocean shipments, the Harbor Maintenance Fee (HMF). Stable Software's free calculator does this from an HTS code, country of origin, customs value and entry date. It leaves out freight and insurance, so add those separately if your landed cost includes them.
How can I automate tariff and landed cost exposure calculations?
Single lookups in the Stable Software tariff calculator are free and need no login. For a whole product list, the bulk spreadsheet tool in a free Stable Software account prices every line the same way, with each line cited to its legal source.
Does the calculator include Section 301 and Section 232 tariffs?
Yes. It adds the China Section 301 list tariffs, the Section 301 forced-labor duties that apply by country of origin, and a conservative Section 232 steel and aluminum estimate for HTS chapters 72, 73 and 76 that is flagged for you to verify. Every line cites its legal source.
Are anti-dumping and countervailing duties included?
No. Anti-dumping and countervailing (AD/CVD) duty rates depend on the specific producer and exporter, so the calculator does not compute them. Check the AD/CVD case for your product before you rely on the estimate.
Is the tariff calculator free?
Yes. Single lookups are free and need no login, and pricing a whole spreadsheet of products needs only a free Stable Software account. Rate alerts, exports and saved scenarios ask for an email address.