DutyDeskDutyDeskU.S. tariff desk · HTSUS Rev.21 · updated 2026-10-26
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Data: HTSUS Rev.21 · 2026-10-25.12PrivacyAI-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.

U.S. import duty lookup

Enter a 10-digit HTS line, the country of origin and the entry date to see the base rate, 301 / 232 / 201 / 338 additional duties, AD/CVD deposits, PGA flags and other requirements, with a confirmed total and a maximum.

Don't know the U.S. import tariff code? Classify a product →

The entry date decides which measures apply; earliest 2026-09-15

Entry claims (optional)
MPF and HMF amounts need the entered value and the transport mode.
Examples:Vacuum flasks / ChinaCotton T-shirts / Viet NamEV lithium batteries / KoreaAluminum profiles / MalaysiaPassenger car / JapanSteel plate / CanadaWhisky / CanadaCoffee / BrazilQuartz countertops / China
3911.90.4500
Other
Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms: › Other: › Other: › Containing monomer units which are aromatic or modified aromatic, or which are obtained, derived or manufactured in whole or in part therefrom: › Thermosetting:
Origin
CN · China
Entry date
2026-10-26
Unit
kg
Column 1 general
5.8%
Special
Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 2
15.4¢/kg + 45%
SPI
—
HTS revision
2026 Rev.21
Print page
1699
Confirmed ad valorem total
43.3%
Column 1 general rate 5.8% + additional 37.5%
Maximum (conditional + AD/CVD deposits)
204.91%
AD/CVD deposits +161.61% · floor 30.8% if exemptions apply
AD/CVD cases
1
AD 161.61%(Same investigation)
How this was calculated
The maximum exposure includes AD/CVD cash deposits AD 161.61% (A570200). AD and CVD from the same investigation are added together. The all-others rate is shown; the actual rate follows the exporter or producer and each order's scope, and deposits are not final duties.

What to verify next

2Checks derived from this result; each item restates a measure, case or regulatory hit shown below.
  1. 1.AD/CVDAD/CVD: confirm whether the producer / exporter has its own rate and whether the goods fall within the scope of "A570200" (cases A570200)↗
  2. 2.RegulatoryTSCA import certification + PFAS 8(a)(7): File a positive TSCA certification (complies with all TSCA rules / orders) or a negative certification (pesticides / food / drugs / cosmeti…↗

Base rate

Column 1 / Column 2 / SPI5.8%
Column 1 General (MFN)Applies
5.8%
Basis: HTSUS 2026 Rev.21 chapters 1–97Verification: VERIFIED

Section 301 forced labor

1+12.5%
Section 301 forced-labor tariff (12.5%)9903.05.31Applies
+12.5%

China: Column 1 rate + 12.5% additional

  • Pharmaceutical applications: exempt (9903.05.89)
Pharmaceutical use → 0% · 9903.05.89
Basis: HTSUS Ch.99 U.S. note 52; 91 FR 47318Effective: 2026-07-24CSMS / source: CSMS #69326983Verification: VERIFIED

Section 301 China

1+25%
China 301 List 2 (9903.88.02)9903.88.02Applies
+25%

8-digit subheading 3911.90.45 is on L2

Basis: HTSUS Ch.99 note 20Effective: 2018-08-23Verification: VERIFIED

AD/CVD

1
AD/CVD: 1 order in placeConditional
—

Cash deposits follow the company-specific rate (ACE case module). Coverage depends on each order's scope. The table below lists case numbers, status and the all-others rate. The all-others deposit rate is counted in the maximum exposure, not in the confirmed total.

Basis: ACE REF-202/207/208 (2026-09-11); FR noticesVerification: VERIFIED (case existence) / check scope and rates case by case
CaseTypeProductStatusAll-others rateDeposit statusDetermination
Same investigation: A570200 · AD 161.61% counted in the maximum
A570200
Matched on 3911.90.4500
AD
Methylene Diphenyl Diisocyanate
New orderChina-wide entity 161.61%
ACE -000: 161.61%
Deposits in effect
Order: 91 FR 38393
ACE rate eff. 2026-05-28

PGA filing flags

0 flagsExpandCollapse

No ACE PGA flag on this line (requirements without a flag, such as FCC, DOE, SIMA and marking, still apply).

Fees

MPF 0.3464% · HMF 0.125%ExpandCollapse

no entered value: rates and limits only

MPF 0.3464% (min $34.58 / max $670.86)—
HMF 0.125% (ocean only)not ocean

Period 2026-10-01 – 2027-09-30 · 91 FR 48398 (2026-07-31, Doc. 2026-15530, FY2027)

Other import requirements

1

Supply chain / forced labor (UFLPA · WRO · CAATSA)

Chinese origin: the UFLPA presumption is triggered through the supply chain (Xinjiang inputs / Entity List), not by country of origin; the origins with the most CBP denials are MY / VN / TH.

Not in a UFLPA priority sector, and no WRO or Finding applies to this origin. The UFLPA presumption still applies through the supply chain (Xinjiang content or listed entities).

Requirements without an ACE flag

TSCA import certification + PFAS 8(a)(7)EPA/CBPConditional
at-entry

File a positive TSCA certification (complies with all TSCA rules / orders) or a negative certification (pesticides / food / drugs / cosmetics / nuclear material) in ACE when importing chemical substances or mixtures. The EP7 flag is advisory only and the certification is the importer's responsibility. Finished articles are generally exempt unless a specific rule applies. PFAS: one-time reporting of PFAS and PFAS-containing articles imported since 2011.

2025–26: The PFAS reporting window is postponed to 2027-01-31 or 60 days after the final rule (2026-04-13); the 2025-11 proposal to exempt imported articles and ≤0.1% content is not final

Basis: 15 U.S.C. 2612; 19 CFR 12.118–.127; 40 CFR 707/705Scope: 39 (Determined by product attributes (the HTS code is only a hint))Exemptions: Articles are exempt unless a specific rule appliesCSMS / source: EPA TSCA import page; FR 2026-04-13Verification: H
General requirements (all goods) (4)
  • Country-of-origin marking (CBP, 19 U.S.C. 1304; 19 CFR 134): Mark the country of origin legibly and permanently in English before release. J-list articles (§134.33) may be marked on the container. Special methods (§134.43: knives, scissors, surgical / scientific instruments, pliers and vacuum bottles must be die-stamped, etched or engraved). Pipe 7304–7307, gas cylinders 7311 and manhole covers 7325 under 1304(c)–(e). Watches and clocks per chapter 91 additional U.S. note 4. Hong Kong goods marked "China" (EO 13936; the origin code stays HK). eCFR 19 CFR 134; CBP HK FAQ
  • Wood packaging material (ISPM 15) (APHIS/CBP, 7 CFR 319.40-3): Wood pallets / crates for all goods must be heat-treated or fumigated and bear the IPPC mark; otherwise immediate re-export and penalties eCFR 7 CFR 319.40-3
  • Importer Security Filing (10+2) (CBP, 19 CFR 149): File the 10 data elements 24 hours before vessel loading (5 elements for FROB / IE / T&E); violations: $5,000 liquidated damages per shipment eCFR 19 CFR 149
  • FTC Made in USA Labeling Rule (FTC, 16 CFR 323): Unqualified "Made in USA" claims only when all or virtually all of the product is made in the U.S.; civil penalties FTC rule; EO 14392
Stacking rules that apply here 11ExpandCollapse
ABRelationRuleBasis
FL301BASEstackAdditive to Column 1; EU/TW net-of-MFN to 10%, JP/KR/CH to 12.5%HTSUS Rev.21 note 52(a), 52(k)
FL301CN301stackStacks with China 301note 52(a)
FL301ADCVDstackAD/CVD continue to applynote 52(a)
FL301FTAnotePreference claims do not exempt, except USMCA duty-free (9903.05.93/.94) and CAFTA-DR textiles (9903.05.95)note 52(a), (g)–(i)
FL301CH98noteChapter 98 exempt except 9802.00.40/.50/.60 (value of repairs) and 9802.00.80 (value less U.S. content)note 52(a)
CN301BASEstackAdditive to Column 1note 20(a)/(c)/(e)/(g)/(r); note 31(a)
CN301ADCVDstackAD/CVD continuenote 20 / 31
CN301FTAnotePreference claims do not exemptnote 20 / note 31(a)
CN301CH98noteChapter 98 exempt except 9802.00.40/.50/.60/.80note 20 paragraphs / note 31(a)
CN301CN301noteFour-year-review products removed from note 20 lists (no double 25%); chassis and STS cranes stack with maritime 301 from 2026-11-10Rev.21 note 20 / 31 comparison; note 31(k)/(l)
ADCVDBASEstackCash deposits (company-specific) in addition to all Chapter 99 duties; not drawback-eligible19 CFR 351; the relevant notes
Composition of the totalExpandCollapse
Column 1 general rate 5.8%5.8%
Section 301 forced-labor tariff (12.5%) Applies+12.5%
China 301 List 2 (9903.88.02) Applies+25%
AD deposit (A570200, all-others) Conditional+161.61%
Floor 30.8%: Section 301 forced-labor tariff (12.5%): Pharmaceutical useif they hold

Data sources and disclaimer

HTSUS 2026 Rev.21 · 2026-10-25.12ExpandCollapse

Data sources

Tariff
HTSUS 2026 Rev.21
Data version
2026-10-25.12
AD/CVD
ACE case module + ITA dashboard

Disclaimer

Compiled from the HTSUS, the Federal Register, CBP CSMS messages and ACE reports as a classification and compliance reference, not legal advice; file according to current CBP/ACE guidance.