Chapter 31
HTS Chapter 31
4 headings · 4 tariff lines · 4 duty-free lines · ad valorem rates from 0% to 0%
Headings in chapter 31
| Heading | Description | Lines | Free | Rate range |
|---|---|---|---|---|
| 3102 | Mineral or chemical fertilizers, nitrogenous | 1 | 1 | Free |
| 3103 | Mineral or chemical fertilizers, phosphatic | 0 | 0 | Free |
| 3104 | Mineral or chemical fertilizers, potassic | 1 | 1 | Free |
| 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 | 2 | 2 | Free |
How to read chapter 31
Chapter 31 is part of the international Harmonized System, not a US invention — the chapter and heading boundaries are shared with every country that uses HS 2022. The 4 tariff lines below them are where countries diverge: national suffixes, rate levels and quota notes are set locally.
4 of the 4 lines in this chapter carry a general rate of Free. That is a statement about the general column only — Section 301, AD/CVD and quota measures are applied on top and are not reflected here.