About DutyDesk
One desk for U.S. import duties: classify first, then compute the duty stack, with the compliance lists alongside.
A U.S. import classification tool built for Chinese-speaking users. You describe a product; it works through the Harmonized Tariff Schedule heading by heading, applies the General Rules of Interpretation and returns candidate lines with reasoning, plus flags for Section 301 / 232 / 201 and AD/CVD measures.
Tariff text comes from the USITC's official HTSUS release and is refreshed with each official revision. Candidates can only be chosen from real tariff lines; the model cannot invent a number.
Three sections
- HS classification: describe a product and get the 10-digit line with its GRI basis and similar rulings.
- Duty lookup: code + origin + entry date, itemising the base rate, 301 / 232 / 201 / 338, AD/CVD, PGA and other requirements.
- Resources: UFLPA / WRO lists, requirements, official portals and data sources.
Data version
- HTSUS
- Rev.21 · 2026-10-18.12
- Statistical lines
- 20,242
- Data version
- 2026-10-18.12 · HTSUS 2026 Rev.21
- Models
- anthropic: claude-haiku-5-5 → claude-sonnet-5-5
Data modules and versions
13| ID | Module | Verified | Rows | Source |
|---|---|---|---|---|
| base-rates | Base rates (Column 1 General / Special / Column 2, SPI eligibility) | 2026-10-12 | 20,242 | HTSUS 2026 Rev.21 |
| country-measures | Country-of-origin measures | 2026-10-01 | 244 | Rev.21 Ch.99 notes 29/30/50/51 print edition; Federal Register texts; Canada 338 September changes: 91 FR 58311–58346 + White House annex text layer + CSMS #69851916; import-exclusion implementation CSMS #70050970 / #70050117 (2026-09-28) |
| sec232 | Section 232 | 2026-10-01 | 1,882 | Rev.21 Ch.99 notes 16/33/37/38/39/40/43; Proc. 11021/11032/11045/10908/10925/10984/10976/11000/11002/11020/11055/11052; 91 FR 60360 (pharmaceutical technical corrections, 2026-09-29); 91 FR 60505 (polysilicon anti-stockpiling temporary final rule) |
| sec301-china | Section 301 China | 2026-10-12 | 10,942 | Rev.21 Ch.99 notes 20 / 31; USTR FR notices |
| sec301-forced-labor | Section 301 forced-labor tariffs | 2026-09-20 | 60 | 91 FR 47318 Annex; Rev.21 Ch.99 note 52 |
| sec201 | Section 201 safeguards | 2026-09-20 | 36 | Rev.21 Ch.99 notes 17 / 18 / 32 / 41; FR proclamations |
| adcvd | AD/CVD orders and investigations | 2026-10-12 | 1,352 | ACE REF-202/207/208 (exported 2026-10-12); ITA ADCVD Proceedings (2026-10-12); FR notices (through 2026-10-12) |
| pga | PGA HTS flags | 2026-10-01 | 10,046 | ACE REF-001/002/003 (exported 2026-10-01); CBP Agency Tariff Code Reference Guide 2026-03-04 |
| uflpa-wro | UFLPA entity list, priority sectors, WROs & Findings | 2026-10-01 | 228 | 91 FR 48913; FLETF 2024/2025 Strategy Updates; CBP CSMS (WROs through #70061795, 2026-09-29); CBP Pub. 5560-0526 (2026-06-09) appendices A/E/F transcribed; CBP Pub. 5344-0126 (dashboard guide) |
| trq | Tariff-rate quota marking | 2026-09-20 | 631 | HTSUS Rev.21 chapter additional U.S. notes (in-quota line text parsed); chapter 99 subchapter IV 9904; CBP Quota Bulletins |
| fees | IRS excise taxes on imports | 2026-09-16 | 106 | 26 U.S.C. 5001 / 5041 / 5051 / 5701 / 4051 / 4071 / 4081 / 4161 / 4181 / 4661 / 4671 / 4681; 26 CFR 48 / 52; 27 CFR 27 / 41; TTB current rates page; CBP CATAIR App. B (class codes) |
| cn-hs | China Customs 10-digit commodity names (linked by HS-6) | 2026-09-16 | 12,030 | 2026-01-01 edition; HS 6-digit codes match HTSUS chapters 1–97 100% |
| regulatory | Non-flag import requirements + PGA knowledge + SIMA/AIM license lists | 2026-10-01 | 92 | Primary texts from eCFR / FR / FCC / EPA / CPSC / APHIS / NMFS etc. (see module README); FCC Covered List item by item (Public Notice / R&O texts); polysilicon anti-stockpiling restriction 91 FR 60505 + CSMS 69994928 |
AI-generated suggestion based on HTSUS text, not legal advice. Final classification rests with CBP rulings or licensed advice; the importer of record is responsible for the entry.