Every US duty rate, with its official citation.

DutyCite returns the duty an importer will owe on a product: base (MFN/FTA) duty, Section 232, Section 301 (China lists, Brazil, and the 2026 forced-labor action), Section 338, and the MPF and HMF fees. Every line cites its legal source and effective date. Built for e-commerce, sourcing and logistics agents.

Free duty calculator

Free: 5 calculations per day. Entries from today; US dollars only.

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Updated for November 2026: IEEPA tariffs no longer collected (since Feb 24, 2026), Section 122 surcharge expired Jul 24, 2026, Section 301 forced-labor duties on 60 economies in force from Jul 24, 2026, FY2027 MPF limits ($34.58–$670.86) from Oct 1, 2026.

Try it

curl -s https://dutycite.com/v1/duty \
  -H "Authorization: Bearer $DUTYCITE_KEY" -H "content-type: application/json" \
  -d '{"hts":"6109.10.00.12","origin":"VN","customs_value":20000,"mode":"ocean"}'
Free lookups

Search and look up any of the ~30,000 HTSUS lines with base rates. No key needed.

$0.02 per duty calculation

Prepaid packs from $5.90 (incl. processing fee). No subscription. Bulk lines $0.01.

MCP server

Add https://dutycite.com/mcp to Claude, Cursor or any MCP client: hts_search, hts_lookup, calculate_duty.

Sources on every line

Federal Register, USTR, CBP CSMS and HTS Chapter 99 citations with effective dates. Unverifiable items are flagged, never guessed.