Research-grade reference tool. NOT legal advice. Verify HS codes at hts.usitc.gov and screen suppliers against the live OFAC SDN + DHS UFLPA Entity List before filing or purchasing. Tariff rates change with same-day effective dates; this is a dated snapshot.  ·  Static, offline, no network calls (CSP connect-src 'none'). Engine mirrors the Python decision engine (1,247 passing tests). Data snapshot 2026-06-29.