3815.19.00.00
Other
Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: Supported catalysts
Duty rates
Column 1 (General / MFN)
Free
Column 2 (Non-NTR)
25%
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.90.08
35%
Articles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Applies to origin: RU, BY
Effective from April 5, 2025
9903.03.01
The duty provided in the applicable subheading + 10%
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.02
The duty provided in the applicable subheading
Articles the product of any country that (1) were loaded onto a vessel at the port of loading and in transit on the final mode of transit prior to entry into the United States, before 12:01 a.m. eastern standard time on February 24, 2026; and (2) are entered for consumption, or withdrawn from warehouse for consumption, before 12:01 a.m. eastern standard time on February 28, 2026
Effective from February 24, 2026 through July 24, 2026
9903.03.03
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.04
The duty provided in the applicable subheading
Articles the product of any country, as provided for in subdivision (aa)(iii) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.05
The duty provided in the applicable subheading
Articles of civil aircraft (all aircraft other than military aircraft); their engines, parts and components; their other parts, components and subassemblies; and ground flight simulators and their parts and components of any country, provided for in subdivision (aa)(iv) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.06
The duty provided in the applicable subheading
Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Effective from February 24, 2026 through July 24, 2026
9903.03.07
The duty provided in the applicable subheading
Articles the product of Canada, as provided for in subdivision (aa)(vi) of U.S. note 2 to this subchapter
Applies to origin: CA
Effective from February 24, 2026 through July 24, 2026
9903.03.08
The duty provided in the applicable subheading
Articles the product of Mexico, as provided for in subdivision (aa)(vii) of U.S. note 2 to this subchapter
Applies to origin: MX
Effective from February 24, 2026 through July 24, 2026
9903.03.09
The duty provided in the applicable subheading
Articles of textiles or apparel the product of Costa Rica, the Dominican Republic, El Salvador, Guatemala, Honduras or Nicaragua, as provided for in subdivision (aa)(viii) of U.S. note 2 to this subchapter
Applies to origin: CR, SV, GT, HN, NI, DO
Effective from February 24, 2026 through July 24, 2026
9903.03.10
The duty provided in the applicable subheading
Articles that are donations, by persons subject to the jurisdiction of the United States, such as food, clothing and medicine, intended to be used to relieve human suffering
Effective from February 24, 2026 through July 24, 2026
9903.03.11
The duty provided in the applicable subheading
Articles that are informational materials, including but not limited to publications, films, posters, phonograph records, photographs, microfilms, microfiche, tapes, compact disks, CD ROMs, artworks and news wire feeds
Applies to origin: IL
Effective from February 24, 2026 through July 24, 2026
9903.88.03
LIST_1
The duty provided in the applicable subheading + 25%
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Applies to origin: CN
Effective from August 23, 2018
9903.88.69
LIST_4
0% (exclusion from Section 301)
Effective with respect to entries on or after June 15, 2024 and through November 9, 2026, articles the product of China, as provided for in U.S. note 20(vvv) to this subchapter, each covered by an exclusion granted by the U.S. Trade Representative
Applies to origin: CN
Effective from September 1, 2019 through November 9, 2026
Related CBP rulings
The tariff classification of cationic photoinitiators from Mexico
Additional information was provided via email on January 4, 2021. The two products under consideration are identified as CPI-6976 (also referred to as UVI-6976) and CPI-6992 ( also referred to as UVI 6992). They are cationic photoinitiators
Mattresses; USMCA; De Minimis
The merchandise at issue a king-size foam mattress with a quilted cover, identified as “US Comfort Grande Refresh - KG.” The mattress cover is made of a rayon and polyester blend and utilizes a zippered opening to cover the mattress core. T
United States-Korea Free Trade Agreement (“UKFTA”); 2-Hydroxyethyl Methacrylate (2HEMA); Self-Produced Materials
Kowa imported the subject merchandise, 2HEMA, on January 7, 2018 from Korea. The port denied Kowa’s UKFTA preferential claim due to lack of raw material receipts and factory production records. The entry was liquidated on April 20, 2018. Ac
The tariff classification and country of origin of Spray Dried Copper Zeolite Catalysts from various countries; Article 509.
The tariff classification and country of origin of Spray Dried Copper Zeolite Catalysts from various countries; Article 509.
The tariff classification of LESA 74070 and LESA 74071 from Canada or Mexico
Your inquiry was submitted to the U.S. Customs and Border Protection laboratory for analysis. Additional information was provided via email on September 21 and 22, 2018. The analysis is now complete. The products under consideration are BET
The country of origin of birch-faced, parica plywood panels
The country of origin of birch-faced, parica plywood panels
The tariff classification of “NC-25” from Japan Correction to Ruling Number N281144
” You have indicated that the product at issue is a polymerization initiator, intended to be used in the manufacture of automotive paints and coatings. Your submission describes the chemical composition as: CAS number 2638-94-0: 4, 4’-Azobi
The tariff classification of “NC-25” from Japan
” You have indicated that the product at issue is a polymerization initiator, intended to be used in the manufacture of automotive paints and coatings. Your submission describes the chemical composition as: CAS number 2638-94-0: 4, 4’-Azobi
The tariff classification of “Mn-OCTOATE 8%” from Japan.Correction to Ruling Number N280253
” You have indicated that the product at issue is a chemical additive, intended to be used in the manufacture of automotive paints. You provided additional information via e-mail, which indicates that “Mn-OCTOATE 8%” is a reaction accelerat
The tariff classification of “12% Zr-OCTOATE” from Japan.Correction to Ruling Number N280275
” You have indicated that the product at issue is a chemical additive, intended to be used in the manufacture of automotive paints. You provided additional information via e-mail, which indicates that “12% Zr-OCTOATE” is a reaction accelera
The tariff classification of “Mn-OCTOATE 8%” from Japan
” You have indicated that the product at issue is a chemical additive, intended to be used in the manufacture of automotive paints. You provided additional information via e-mail, which indicates that “Mn-OCTOATE 8%” is a reaction accelerat
The tariff classification of “12% Zr-OCTOATE” from Japan
” You have indicated that the product at issue is a chemical additive, intended to be used in the manufacture of automotive paints. You provided additional information via e-mail, which indicates that “12% Zr-OCTOATE” is a reaction accelera
Other codes in heading 3815
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 3815.19.00.00 from each major US trading partner.
Need to defend this classification?
TariffLens generates GRI reasoning, cites the right CBP rulings, and builds the audit trail you need for reasonable care.
Book a demo →