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U.S. imports of npk fertilizers (nitrogen, phosphorus & potassium) (HS 310520) totaled $7.6M in July 2026, traded with 32 countries.
Importers of NPK Fertilizers (Nitrogen, Phosphorus & Potassium) paid $61K in duties in July 2026 — an effective duty rate of 24% on $253K in dutiable value, based on actual customs collections rather than the published tariff schedule. NPK Fertilizers (Nitrogen, Phosphorus & Potassium) imports of $7.6M in July 2026 ran 51% below the year-to-date monthly average of $15.4M.
Last updated: July 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.
226 shipments/mo
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.
HSChapter 31
Subheading 2 of 8 in heading 3105
Subheading 310520 · $7.6M of $75.9M
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ImportsExports
Imports
$7.6MYoY · Pro
Exports
$7.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3105200000 | Fertilers Contain Nitrogen, Phosphorus & Potassium | $7.6M | 0.80% | 3.33% | $61K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3105200000 | Fertilers Contain Nitrogen, Phosphorus & Potassium | $7.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
Canada and Japan together supply 49% of it.
customs district
destination
entry
rate provision · imports
96.7% enters free of duty; the effective duty rate is 0.80%.