Section VI · Chemical Products · Chapter 31
Fertilizers
About chapter 31
Chapter 31 covers fertilizers: nitrogenous, phosphatic and potassic fertilizers, both mineral/chemical and animal or vegetable-based, plus mixed formulations. Classification generally follows the primary nutrient content (N, P, K) and whether the product is a single or mixed fertilizer.
Classification tip: Single-nutrient versus mixed (compound) fertilizers sit on different subheadings, and the exact N-P-K ratio stated on the label is usually what customs checks against the declared code.
24 six-digit codes
Fertilizers; animal or vegetable, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products
1 code3101.00Fertilizers, animal or vegetable; whether or not mixed together or chemically treated; fertilizers, produced by the mixing or chemical treatment of animal or vegetable products
Fertilizers; mineral or chemical, nitrogenous
9 codes3102.10Fertilizers, mineral or chemical; nitrogenous, urea, whether or not in aqueous solution3102.21Fertilizers, mineral or chemical; nitrogenous, ammonium sulphate3102.29Fertilizers, mineral or chemical; nitrogenous, other than ammonium sulphate3102.30Fertilizers, mineral or chemical; nitrogenous, ammonium nitrate, whether or not in aqueous solution3102.40Fertilizers, mineral or chemical; ammonium nitrate with calcium carbonate or other inorganic non-fertilizing substances, mixtures thereof3102.50Fertilizers, mineral or chemical; nitrogenous, sodium nitrate3102.60Fertilizers, mineral or chemical; nitrogenous, double salts and mixtures of calcium nitrate and ammonium nitrate3102.80Fertilizers, mineral or chemical; nitrogenous, mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution3102.90Fertilizers, mineral or chemical; nitrogenous, other kinds including mixtures not specified in the foregoing subheadings
Fertilizers; mineral or chemical, phosphatic
3 codes3103.11Fertilizers, mineral or chemical; phosphatic, superphosphates, containing by weight 35% or more of diphosphorus pentaoxide (P2O5)3103.19Fertilizers, mineral or chemical; phosphatic, superphosphates, other than containing by weight 35% or more of diphosphorus pentaoxide (P2O5)3103.90Fertilizers, mineral or chemical; phosphatic, n.e.c. in heading no. 3103
Fertilizers; mineral or chemical, potassic
3 codes3104.20Fertilizers, mineral or chemical; potassic, potassium chloride3104.30Fertilizers, mineral or chemical; potassic, potassium sulphate3104.90Fertilizers, mineral or chemical; potassic, n.e.c. in heading no. 3104
Fertilizers; mineral or chemical, containing 2 or 3 of the elements nitrogen, phosphorus, potassium; other fertilisers; goods of chapter 31 in tablets or packages of gross weight not exceeding 10kg
8 codes3105.10Fertilizers, mineral or chemical; in tablets or similar forms or in packages of a gross weight not exceeding 10kg3105.20Fertilizers, mineral or chemical; containing the three fertilizing elements nitrogen, phosphorus and potassium3105.30Fertilizers, mineral or chemical; diammonium hydrogenorthophosphate (diammonium phosphate)3105.40Fertilizers, mineral or chemical; ammonium dihydrogenorthophosphate (monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (diammonium phosphate)3105.51Fertilizers, mineral or chemical; containing nitrates and phosphates3105.59Fertilizers, mineral or chemical; containing the two fertilizing elements nitrogen and phosphorus, other than nitrates and phosphates3105.60Fertilizers, mineral or chemical; containing the two fertilizing elements phosphorus and potassium3105.90Fertilizers, mineral or chemical; n.e.c. in heading no. 3105
More chapters in section VI: Chemical Products
Codes and descriptions follow the WCO six-digit Harmonized System nomenclature. National tariff schedules extend these to 8–13 digits and set the actual duty rate, so confirm the full code for your destination country with your customs broker before filing. To copy a code, hover a row and use the copy button; every code has 3101-style dot notation ready for your commercial invoice.
Chapter 31 FAQ
What does HS code chapter 31 cover?
Chapter 31 of the Harmonized System covers: fertilizers. It belongs to section VI (Chemical Products) and contains 5 four-digit headings, 3101–3105.
How many HS codes are in chapter 31?
Chapter 31 contains 5 four-digit headings and 24 six-digit subheadings. Countries subdivide these further (8–13 digits) in their national tariff schedules, so the full national count is larger.
Is HS code 3101 the same in every country?
Yes. The six-digit level of every code in this chapter is harmonised by the World Customs Organization and identical in all member countries. Digits beyond the sixth (for example the US 10-digit HTS or the EU 8-digit CN) are national and set the actual duty rate.
How do I choose the right code within chapter 31?
Work from the four-digit heading down: pick the heading that best matches your product, then the six-digit subheading that matches its material, form or processing. If two codes seem to fit, customs rules (the General Rules of Interpretation) decide, and when in doubt, confirm with your customs broker before filing.