Import duty / Chapter 31 / Heading 3105
Heading 3105 covers 8 tariff lines in LoadLoom's table; 8 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.
| HS code | Goods | US duty | Canada duty | USMCA |
|---|---|---|---|---|
| 3105.10 | Fertilizers, mineral or chemical; in tablets or similar forms or in packages of a gross weight not exceeding 10kg | Free | Free | Free with certificate |
| 3105.20 | Fertilizers, mineral or chemical; containing the three fertilizing elements nitrogen, phosphorus and potassium | Free | Free | Free with certificate |
| 3105.30 | Fertilizers, mineral or chemical; diammonium hydrogenorthophosphate (diammonium phosphate) | Free | Free | Free with certificate |
| 3105.40 | Fertilizers, mineral or chemical; ammonium dihydrogenorthophosphate (monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (diammonium phosphate) | Free | Free | Free with certificate |
| 3105.51 | Fertilizers, mineral or chemical; containing nitrates and phosphates | Free | Free | Free with certificate |
| 3105.59 | Fertilizers, mineral or chemical; containing the two fertilizing elements nitrogen and phosphorus, other than nitrates and phosphates | Free | Free | Free with certificate |
| 3105.60 | Fertilizers, mineral or chemical; containing the two fertilizing elements phosphorus and potassium | Free | Free | Free with certificate |
| 3105.90 | Fertilizers, mineral or chemical; n.e.c. in heading no. 3105 | Free | Free | Free with certificate |
This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.
