Import duty / Chapter 39 / Heading 3907
Heading 3907 covers 11 tariff lines in LoadLoom's table; 9 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 |
|---|---|---|---|---|
| 3907.10 | Polyacetals; in primary forms | 6.5% | Free | Free with certificate |
| 3907.21 | Polyethers other than polyacetals; in primary forms, bis(polyoxyethylene) methylphosphonate | 6.5% | Free | Free with certificate |
| 3907.29 | Polyethers other than polyacetals, and bis(polyoxyethylene) methylphosphonate; in primary forms | 6.5% | Free | Free with certificate |
| 3907.30 | Epoxide resins; in primary forms | 6.1% | Free | Free with certificate |
| 3907.40 | Polycarbonates; in primary forms | 5.8% | Free | Free with certificate |
| 3907.50 | Alkyd resins; in primary forms | 6.5% | Free | Free with certificate |
| 3907.61 | Poly(ethylene terephthalate); in primary forms, having a viscosity of 78ml/g or higher | 6.5% | Free | Free with certificate |
| 3907.69 | Poly(ethylene terephthalate); in primary forms, having a viscosity of less than 78ml/g | 6.5% | Free | Free with certificate |
| 3907.70 | Poly(lactic acid); in primary forms | 6.5% | Free | Free with certificate |
| 3907.91 | Polyesters; n.e.c. in heading no. 3907, unsaturated, in primary forms | Free | Free | Not eligible |
| 3907.99 | Polyesters; n.e.c. in heading no. 3907, saturated, 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.
