Fertilizers — US Tariff Rates
US tariff rates for mineral and chemical fertilizers including nitrogen, phosphate, and potassium fertilizers. HTS codes and import duties.
HTS Codes in Chapter 31 — Fertilizers
| HTS Code | Description | Base Duty | Tariff Flags | Actions |
|---|---|---|---|---|
| 3101.00.00.00 | 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 | Free | §122 +15% | |
| 3102.10.00 | Urea, whether or not in aqueous solution | Free | §122 +15% | |
| 3102.21.00.00 | Ammonium sulfate | Free | §122 +15% | |
| 3102.29.00.00 | Other | Free | §122 +15% | |
| 3102.30.00.00 | Ammonium nitrate, whether or not in aqueous solution | Free | §122 +15% | |
| 3102.40.00.00 | Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances | Free | §122 +15% | |
| 3102.50.00.00 | Sodium nitrate | Free | §122 +15% | |
| 3102.60.00.00 | Double salts and mixtures of calcium nitrate and ammonium nitrate | Free | §122 +15% | |
| 3102.80.00.00 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution | Free | §122 +15% | |
| 3102.90.01.00 | Other, including mixtures not specified in the foregoing subheadings | Free | §122 +15% | |
| 3103.11.00.00 | Containing by weight 35 percent or more of diphosphorous pentaoxide (P2O5) | Free | §122 +15% | |
| 3103.19.00.00 | Other | Free | §122 +15% | |
| 3103.90.01.00 | Other | Free | §122 +15% | |
| 3104.20.00 | Potassium chloride | Free | §122 +15% | |
| 3104.30.00.00 | Potassium sulfate | Free | §122 +15% | |
| 3104.90.01.00 | Other | Free | §122 +15% | |
| 3105.10.00.00 | Products of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg | Free | §122 +15% | |
| 3105.20.00.00 | Mineral or chemical fertilizers containing the three fertilizing elements nitrogen, phosphorus and potassium | Free | §122 +15% | |
| 3105.30.00.00 | Diammonium hydrogenorthophosphate (Diammonium phosphate) | Free | §122 +15% | |
| 3105.40.00 | Ammonium dihydrogenorthophosphate (Monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate) | Free | §122 +15% | |
| 3105.51.00.00 | Containing nitrates and phosphates | Free | §122 +15% | |
| 3105.59.00.00 | Other | Free | §122 +15% | |
| 3105.60.00.00 | Mineral or chemical fertilizers containing the two fertilizing elements phosphorus and potassium | Free | §122 +15% | |
| 3105.90.00 | Other | Free | §122 +15% |
Related HTS Chapters
About HTS Chapter 31 — Fertilizers
HTS Chapter 31 covers fertilizers under the US Harmonized Tariff Schedule (HTS). The HTS is maintained by the US International Trade Commission (USITC) and updated periodically to reflect trade policy changes including executive orders, Section 232 national security tariffs, Section 301 China tariffs, and Section 122 emergency tariffs.
To import goods under Chapter 31, US importers must declare the correct 10-digit HTS code on their Customs entry. The duty rate shown is the general (MFN) rate. Special rates may apply under free trade agreements (FTAs) such as USMCA, CPTPP, or bilateral agreements. Use the FTA Checker to see if preferential rates apply to your shipment.
Anti-dumping (AD) and countervailing duty (CVD) orders may impose additional duties on specific products and countries of origin beyond the rates shown here. Always consult with a licensed customs broker for classification decisions.