3101.00 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
A full HS code. These six digits are what goes on a customs declaration, and they mean the same thing in every country that uses the Harmonized System.
Section VI, Chemical Products — inorganic and organic chemicals, pharmaceuticals, fertilisers, paints and cosmetics.
- 31 Chapter Fertilizers
- 01 Heading 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
- 00 Subheading 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
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.
All of chapter 31The wording above is the Harmonized System nomenclature as published by the World Customs Organization, HS 2022 edition. It is a classification reference, not a tariff: it carries no duty rates, and it stops at six digits — the importing country adds its own beyond that.
Classification is decided by the General Rules of Interpretation and the section and chapter notes, and it is the importing country’s customs authority that makes it binding.
Shipping goods under 3101.00? A customs hold shows up as a milestone that stops moving — follow the container or the air waybill from departure to delivery.
Track a shipment3101.00 FAQ
3101.00 covers 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. It sits under heading 31.01 (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) in chapter 31, Section VI of the Harmonized System.
It is the international part of it. Six digits are the same in every country that applies the Harmonized System; the importing country then extends them to eight or ten for its own tariff and statistics. Declare 3101.00 plus whatever national digits the destination’s tariff schedule adds to it.
The General Rules of Interpretation, read together with the notes to Section VI and to chapter 31. A description that reads right is not enough on its own — the notes routinely pull goods out of the chapter they obviously belong to and put them somewhere else. Where duty or licensing turns on the answer, ask the importing country’s customs authority for a binding ruling.
A wrong or missing code is one of the common reasons customs holds a container, and a hold shows up as a milestone that stops moving. Watch for it in the container tracking app, on the air waybill in the air cargo tracker, or through the tracking API.