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HSChapter 31
U.S. imports of npk fertilizers (nitrogen, phosphorus & potassium) (HS 310520) totaled $18.3M in April 2026, traded with 29 countries.
Importers of NPK Fertilizers (Nitrogen, Phosphorus & Potassium) paid $18K in duties in April 2026 — an effective duty rate of 11% on $172K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataTriple-nutrient NPK fertilizers — containing nitrogen, phosphorus, and potassium in a single formulation — are among the most widely traded compound fertilizers globally and enter the US under 3105200000. Lithuania and Canada lead supply under this heading; Lithuania's prominence reflects the Baltic region's significant blending and granulation capacity serving export markets. NPK grades vary widely (e.g., 15-15-15, 10-26-26), and the specific nutrient ratio drives agronomic suitability, pricing, and sometimes origin-specific antidumping exposure, making grade documentation critical.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Heading 310520 requires the presence of all three macronutrients — nitrogen, phosphorus, and potassium — in a single product. If only two of the three are present, the product falls under one of the binary-nutrient headings (e.g., 310551 or 310559 for N+P combinations, or 310590 for other combinations).
Certain NPK fertilizer products have historically been subject to antidumping investigations in the US, particularly for products originating from specific countries. Importers should check the USITC and Department of Commerce databases for active orders or ongoing investigations covering the specific grade and origin before committing to a purchase.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3105200000 | FERTILERS CONTAIN NITROGEN, PHOSPHORUS & POTASSIUM | $18.3M | 10.54% | $18K |
FERTILERS CONTAIN NITROGEN, PHOSPHORUS & POTASSIUM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3105200000 | FERTILERS CONTAIN NITROGEN, PHOSPHORUS & POTASSIUM | $8.3M |
FERTILERS CONTAIN NITROGEN, PHOSPHORUS & POTASSIUM
6.2K t
| State | Imports | Exports | Balance |
|---|---|---|---|
| Florida | $4.9M | $1.0M | -$3.9M |
| California | $4.0M | $946K | -$3.1M |
| New York | $2.0M | $164K | -$1.8M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| JACKSONVILLE, FL | $3.9M | -- | -$3.9M |
| STOCKTON, CA | $3.7M | -- | -$3.7M |
| RAYMOND, MT | $1.2M | $581K | -$659K |