HTSUS Decision Support by IEEPA Duty Refunds

HTSUS Decision Support is a research tool for Licensed Customs Brokers, customs entry writers, and trade-compliance students working classifications under the Harmonized Tariff Schedule of the United States. WHAT IT DOES Highlight a product description on any web page (or paste it into the popup), press Cmd/Ctrl+Shift+H, and the extension returns: • A proposed 10-digit HTS classification with the legal justification • The General Rule of Interpretation that drove it (GRI 1, 3(b), etc.) • Live USITC tariff data for the heading, fetched directly from hts.usitc.gov • Direct CBP CROSS rulings link for each subheading • A "Potential Flags" section calling out anti-dumping, countervailing duty, FDA/USDA touch points, and country-of-origin sensitivities PRO FEATURE: IEEPA CHAPTER 99 SURTAX CHECK Single biggest source of duty-rate surprise in 2025–2026 entries is the IEEPA Chapter 99 layer — reciprocal, border/fentanyl, Brazil EO, and Russia-oil (India) surcharges that stack on top of the General Rate. Pro users pick a country of origin and the extension returns every active 9903.01.xx and 9903.02.xx provision that applies, including: • Effective and termination dates so you can run point-in-time queries for refund/protest work • Exemption flags worth evaluating (USMCA, donations, informational materials, Section 232 carve-outs, in-transit windows) • A combined estimate of additional ad valorem duty • All 168 entries from the current NCBFAA-distributed Chapter 99 master list PRICING • Free: 5 hosted lookups per day, no API key required (relay rolling out) • BYOK Free: paste your own Anthropic API key, unlimited lookups, image and PDF attachments • Pro: $49 one-time license — adds the IEEPA surtax check, Markdown export, and unlimited everything WHAT IT IS NOT This is a decision-support tool, not a substitute for a Licensed Customs Broker. Per 19 USC § 1641 final classification on a CBP entry must be made by a licensed broker. The extension is intentionally designed to surface citations, GRI reasoning, and verification steps so the broker can audit the suggestion before it goes on a 7501. PRIVACY Your Anthropic API key is stored in chrome.storage.local on your machine and transmitted only to api.anthropic.com over HTTPS. USITC lookups go directly to hts.usitc.gov. We do not operate an analytics or telemetry pipeline. Full policy at the URL listed below. REQUIREMENTS • An Anthropic API key (console.anthropic.com) for unlimited use, or wait for the hosted-free relay • Chrome 127 or newer (for chrome.action.openPopup support on the keyboard shortcut) SUPPORT Issues, feature requests, and bug reports: github.com/smackfunyc/htsusext/issues