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Fertilizers from United Kingdom Tariff: 10% (2026)

Tariff Rate Breakdown

10%

Section 122 Base

10%

Effective Rate

Among US trading partners for fertilizers, United Kingdom plays a notable role, with approximately $138B in total bilateral trade.

Following the Supreme Court's landmark February 20, 2026 decision striking down IEEPA tariffs, imports of fertilizers from United Kingdom are now subject to a 10% base tariff under the Section 301 forced-labor tariff, which replaced the flat 10% Section 122 rate (in effect February 24 – July 24, 2026).

This 10% base surcharge is the Section 301 forced-labor tariff that replaced the flat 10% Section 122 rate when Section 122's 150-day authority expired on July 24, 2026. The final action covers roughly 60 economies under a two-tier 10%/12.5% structure — broader than the earlier 46-country proposal.

Fertilizers (HTS Chapter 31) generally enter duty-free at the MFN level, with the base forced-labor tariff as the primary duty. No additional Section 232 or Section 301 surcharges apply to most products in this category from United Kingdom.

Key products in HTS Chapter 31 imported from United Kingdom include Urea, Ammonium nitrate, Diammonium phosphate, Potash (potassium chloride), NPK blended fertilizers, and Superphosphates.

Common Products in Chapter 31

UreaAmmonium nitrateDiammonium phosphatePotash (potassium chloride)NPK blended fertilizersSuperphosphatesOrganic fertilizers

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Frequently Asked Questions

What is the current tariff rate on fertilizers from United Kingdom?

As of mid-2026, fertilizers from United Kingdom face a base tariff of 10% under the Section 301 forced-labor tariff, which replaced the flat 10% Section 122 rate on July 24, 2026. The effective rate is about 10% on the most-affected products.

Will the tariff on fertilizers from United Kingdom change?

The flat 10% Section 122 tariff expired July 24, 2026 and was replaced the same day by the Section 301 forced-labor tariff; United Kingdom's current 10% base surcharge is that two-tier (10%/12.5%) rate, covering roughly 60 economies. In August 2026, 25 states sued to block the forced-labor tariff, but CBP continues collecting it while the case proceeds.

How did the Supreme Court ruling affect fertilizers imports from United Kingdom?

The Supreme Court's February 20, 2026 ruling struck down IEEPA reciprocal tariffs as exceeding presidential authority. The president signed a replacement flat 10% tariff under Section 122 the same day, effective February 24; that rate expired July 24, 2026 and was replaced by the Section 301 forced-labor tariff (now 10% for United Kingdom).