U.S. imports of NPK Fertilizers (Nitrogen, Phosphorus & Potassium) (HS 310520) totaled $12.9M in August 2026, imported from 33 countries.
Importers of NPK Fertilizers (Nitrogen, Phosphorus & Potassium) paid $42K in duties in August 2026, an average duty rate of 0.33% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. NPK Fertilizers (Nitrogen, Phosphorus & Potassium) imports of $12.9M in August 2026 ran 14% below the year-to-date monthly average of $15.0M.
Last updated: August 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.
182 import shipments a month
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.
Subheading 3 of 8 in heading 3105
Subheading 310520 · $12.9M of $86.1M
ImportsExports
Imports
$12.9MYoY · free account
Exports
$6.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $150.9M of NPK Fertilizers (Nitrogen, Phosphorus & Potassium) and exported $84.3M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 310520 — NPK Fertilizers (Nitrogen, Phosphorus & Potassium), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3105200000 | Fertilers Contain Nitrogen, Phosphorus & Potassium | $12.9M | 0.33% | 1.64% | $42K |
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 | $6.3M |
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 · August 2026
origin
Norway and Japan together supply 62% of it.
customs district
destination
entry
rate provision · imports
98.4% enters free of duty; duty collected equals 0.33% of imports for consumption.