CHAPTER 23 · LEGAL NOTES
Chapter 23
The 43 legal notes below govern classification under Chapter 23. They are part of the official Harmonized Tariff Schedule and are cited verbatim in CBP rulings.
As of June 9, 2026
Chapter notes
Note 1
Chapter Note 1: Heading 2309 includes products of a kind used in animal feeding, not elsewhere specified or included, obtained by processing vegetable or animal materials to such an extent that they have lost the essential characteristics of the original material, other than vegetable waste, vegetable residues and byproducts of such processing.
Additional U.S. notes
Note 0
Additional U.S. Note 0: 45¢/kg1/ 1 Unit Rates of Duty of Quantity Article Description Stat. Suffix Heading/ Subheading 1 2 General Special Oilcake and other solid residues, whether or not ground or in the form of pellets, resulting from the extraction of peanut
Note 1
Additional U.S. Note 1: The term "mixed feeds and mixed-feed ingredients" in subheading 2309.90.10 embraces products of heading 2309 which are admixtures of grains (or products, including byproducts, obtained in milling grains) with molasses, oilcake, oil-cake meal or feedstuffs, and which consist of not less than 6 percent by weight of grain or grain products.
Note 2
Additional U.S. Note 2: The aggregate quantity of animal feed containing milk or milk derivatives entered under subheadings 2309.90.24 and 2309.90.44 in any calendar year shall not exceed 7,399,700 kilograms (articles the product of Mexico shall not be permitted or included in the aforementioned quantitative limitation and no such articles shall be classifiable therein). Of the quantitative limitations provided for in this note, the countries listed below shall have access to not less than the quantities specified below: Quantity (kg) Ireland 5,470,323 United Kingdom 83,914 New Zealand 1,782,618 Australia 56,699 Unit Rates of Duty of Quantity Article Description Stat. Suffix Heading/ Subheading 1 2 General Special Flours, meals and pellets, of meat or meat offal, of fish or of crustaceans, molluscs or other aquatic invertebrates, unfit for human consumption; greaves (cracklings): 2301 Flours, meals and pellets, of meat or meat offal; greaves
Note 6
Additional U.S. Note 6: 4%2/ 1 Unit Rates of Duty of Quantity Article Description Stat. Suffix Heading/ Subheading 1 2 General Special 2309 Preparations of a kind used in animal feeding:
Subheading notes
Note 1
Subheading Note 1: For the purposes of subheading 2306.41, the expression " low erucic acid rape or colza seeds" means seeds as defined in subheading note 1 to chapter 12.
footnote
See 9903.88.03.
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See subheadings 9904.23.01-9904.23.09.
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See subheadings 9904.23.01-9904.23.09.
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See 9903.88.15.
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See 9903.88.03.
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Classify under Chapter 23 with confidence
TariffLens applies the legal notes above automatically when classifying — citing the relevant note in every GRI reasoning chain.