Tariff reference
US import duty & tariff, by HTS code
If you import goods into the US, every product has a Harmonized Tariff Schedule (HTS) code that sets the duty — the import tax — you owe. Those rates move: new schedule revisions, Section 301/232/122 surcharges, new exclusions. This is a free, always-current reference, plus an alert when a code you care about changes.
Look up any code below for its current base (MFN) rate, the Section 301/232/122 surcharges that apply, and what changed recently — maintained continuously from the official USITC source, which most lookups let go stale.
7208.10.15.00— Flat-rolled steel — Section 2328541.10.00— Diodes & semiconductors2825.20.00.00— Lithium oxide & hydroxide6109.10.00.12— Cotton T-shirts0101.21.00.10— Live horses
Not sure of your code? Search free at /hts/search/preview?q=<keyword>, or browse every chapter via the sitemap.
Get free change alerts See recent changes
For developers & AI agents
Every tool here is also a JSON API your code — or your AI agent — can call. Free endpoints need no key. Paid endpoints are pay-per-call over x402 (USDC on Base): an agent pays a fraction of a cent per request, with no account, login, or subscription.
| Endpoint | Returns | Price |
|---|---|---|
/duty?code=&origin=&value= | Full landed-cost duty stack (base + 301/232/122 + MPF/HMF) | $0.05 |
/hts/lookup?code= | Normalized rate line for a code | $0.03 |
/hts/search?q= | Find HTS codes by keyword | $0.02 |
/changes | Machine-readable change feed | $0.02 |
/duty/preview · /changes/by-code?codes= · /health | Free tiers & status | free |
Machine-readable service description for agents: /llms.txt. Lookup pages embed schema.org JSON-LD; paid responses follow the standard x402 402-challenge flow.