Import duty / Chapter 39 / Heading 3909
Heading 3909 covers 6 tariff lines in LoadLoom's table; 5 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 |
|---|---|---|---|---|
| 3909.10 | Amino-resins; urea and thiourea resins, in primary forms | 6.5% | Free | Free with certificate |
| 3909.20 | Amino-resins; melamine resins, in primary forms | 6.5% | Free | Free with certificate |
| 3909.31 | Amino-resins; n.e.c. in heading no. 3909, in primary forms, poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI) | 6.5% | Free | Free with certificate |
| 3909.39 | Amino-resins; n.e.c. in heading no. 3909, in primary forms, other than poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI) | 6.5% | Free | Free with certificate |
| 3909.40 | Phenolic resins; in primary forms | 6.5% | Free | Free with certificate |
| 3909.50 | Polyurethanes; in primary forms | Free | Free | Not eligible |
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.
