HTS Chapter 31 — Fertilizers Tariff Rates (2026)

Encompasses animal and vegetable fertilizers, chemical fertilizers including nitrogen, phosphate, and potassium compounds used in agriculture.

Rate Overview

Avg MFN Rate

10%

Section 122

N/A

Section 232

7.5-100%

Section 301 (China)

Key Headings in Chapter 31

HTS Code	Description	MFN Rate	Sec 232	Sec 301
3102	Nitrogen fertilizers	Free	N/A	N/A
3104	Potassic fertilizers	Free	N/A	N/A
3105	Mineral or chemical fertilizers containing multiple nutrients	Free	N/A	N/A

Common Products

UreaAmmonium nitrateDiammonium phosphatePotash (potassium chloride)NPK blended fertilizersSuperphosphatesOrganic fertilizers

HTS Chapter 31 covers fertilizers, encompassing a wide range of products that enter the United States under various tariff classifications. Encompasses animal and vegetable fertilizers, chemical fertilizers including nitrogen, phosphate, and potassium compounds used in agriculture. The average MFN (Most Favored Nation) duty rate for products in this chapter is 0%. Many products in this chapter enter duty-free at the base MFN level. In addition to MFN rates, all imports face the 10% Section 122 tariff (effective February 24, 2026, expiring approximately July 24, 2026). Chinese imports in this chapter face additional Section 301 tariffs ranging from 7.5% to 100%, depending on the specific product classification. Common products in this chapter include Urea, Ammonium nitrate, Diammonium phosphate, Potash (potassium chloride), NPK blended fertilizers, Superphosphates, Organic fertilizers. Related HTS chapters include Chapter 28, Chapter 38, which cover similar or complementary product categories.

Frequently Asked Questions

What is the average tariff rate for HTS Chapter 31 (Fertilizers)?

The average MFN duty rate for fertilizers is 0%. All imports also face the 10% Section 122 tariff. Chinese imports may face additional Section 301 tariffs.

What products are in HTS Chapter 31?

Chapter 31 covers fertilizers, including Urea, Ammonium nitrate, Diammonium phosphate, Potash (potassium chloride), NPK blended fertilizers. Related chapters include Chapter 28, Chapter 38.

Are fertilizers subject to Section 232 or Section 301 tariffs?

Section 232 tariffs generally do not apply to products in this chapter. Chinese imports in this chapter face Section 301 tariffs of 7.5-100%.