CHAPTER 31
Fertilizers
Section VI of the U.S. Harmonized Tariff Schedule. 5 headings.
Headings in this chapter
3101
Animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products
3102
Mineral or chemical fertilizers, nitrogenous:
3103
Mineral or chemical fertilizers, phosphatic:
3104
Mineral or chemical fertilizers, potassic:
3105
Mineral or chemical fertilizers containing two or three of the fertilizing elements nitrogen, phosphorus and potassium; other fertilizers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg:
Recent CBP rulings in Chapter 31
N360928
May 6, 2026
Country of origin determination for a faux rabbit fur throw; 19 CFR 102.21(c)(5); last country where an important assembly or manufacturing process occurred
N359858
April 16, 2026
The tariff classification of Power K from Brazil
N359854
April 15, 2026
The tariff classification of Herbitec from Brazil
N359849
April 13, 2026
The tariff classification of Biofran from Brazil
N359855
April 13, 2026
The tariff classification of Aminomax from Brazil
N359845
April 10, 2026
The tariff classification of fertilizers from Brazil
N359848
April 10, 2026
The tariff classification of Max Fulvic from Brazil
N359847
April 8, 2026
The tariff classification of Mega from Brazil
N359852
April 8, 2026
The tariff classification of Enxofre+ from Brazil
N359846
April 3, 2026
The tariff classification of Aminomix from Brazil
N359916
March 31, 2026
The country of origin of bimetal hole saws
N359554
March 26, 2026
The country of origin of a prismatic battery cell
Chapter 31 legal notes →
Section, chapter, additional U.S., and statistical notes that govern classification under Chapter 31.
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