Mineral or chemical fertilizers — HTS 3102
Mineral or chemical fertilizers, nitrogenous
Chapter 31 › Heading 3102
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 3102 covers nitrogenous fertilizers made from mineral or chemical substances. It is a broad 4-digit product category, not the final classification: it can group different nitrogen-bearing fertilizer materials and formulations, such as products identified by their chemical composition or fertilizer type.
To reach the correct 8-digit HTSUS code, first identify the product’s exact composition and form, then follow the more specific subheadings under heading 3102. The controlling distinction is usually the material or chemical type, but other details—such as whether it is a mixture, solution, or prepared fertilizer—may also matter. Use the current HTSUS wording, section and chapter notes, and any applicable classification guidance; a customs broker or binding ruling may be appropriate when the product is difficult to classify.
What to check
- Obtain the full ingredient list, chemical name, nitrogen content, and product specification sheet.
- Check whether the product is a single chemical substance, a solution, a mixture, or a formulated fertilizer.
- Read the complete 8-digit subheading description and all relevant notes instead of stopping at heading 3102.
- Compare the product’s physical form and intended fertilizer use with the wording of the candidate subheadings.
- Confirm the classification against current official HTSUS data and seek broker or binding-ruling guidance if material composition is unclear.
HTS heading 3102 summary
Mineral or chemical fertilizers is a 4-digit product category containing 7 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 3102.10.00 👉 | Urea, whether or not in aqueous solution | Free | — | Free |
| 3102.30.00.00 👉 | Ammonium nitrate, whether or not in aqueous solution | Free | — | Free |
| 3102.40.00.00 👉 | Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances | Free | — | Free |
| 3102.50.00.00 👉 | Sodium nitrate | Free | — | Free |
| 3102.60.00.00 👉 | Double salts and mixtures of calcium nitrate and ammonium nitrate | Free | — | Free |
| 3102.80.00.00 👉 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution | Free | — | Free |
| 3102.90.01.00 👉 | Other, including mixtures not specified in the foregoing subheadings | Free | — | Free |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3102?
Mineral or chemical fertilizers, nitrogenous. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.