USTariffRates

Duty stack evidence

Tariff Rate API

Retrieve tariff-rate stacks for HTS codes, including MFN duty, current surcharge programs, trade-remedy flags, and source provenance where available.

Get API keyAPI reference
GET/api/v1/lookup
curl "https://ustariffrates.com/api/v1/lookup?code=7304.19.10&country=china" \
  -H "X-Api-Key: YOUR_API_KEY"

Common uses

  • Power duty-rate checks in quoting, ERP, TMS, or landed-cost systems.
  • Compare base tariff rates with additional tariff programs.
  • Support audit workflows with structured tariff evidence and source context.

Response fields

base_dutytotal_additionaltotal_estimatedwarningssection_301_china_listsection_232_label

Data and source context

US Tariff Rates combines HTS schedule data with tariff program and trade-remedy context. Some endpoints expose source and provenance fields directly; historical replay is supported where the current data set has effective-date coverage, with fuller archive coverage planned for audit and refund workflows.

Frequently Asked Questions