Import duty / Chapter 55 / Heading 5509
Heading 5509 covers 18 tariff lines in LoadLoom's table; 15 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 |
|---|---|---|---|---|
| 5509.11 | Yarn; (not sewing thread), single, of synthetic staple fibres, containing 85% or more by weight of nylon or other polyamides, not put up for retail sale | 9.4% | Free | Free with certificate |
| 5509.12 | Yarn; (not sewing thread), multiple (folded) or cabled yarn, of synthetic staple fibres, containing 85% or more by weight of nylon or other polyamides, not put up for retail sale | 10.6% | Free | Free with certificate |
| 5509.21 | Yarn; (not sewing thread), single, of synthetic staple fibres, containing 85% or more by weight of polyester, not put up for retail sale | 9.7% | Free | Free with certificate |
| 5509.22 | Yarn; (not sewing thread), multiple (folded) or cabled yarn, of synthetic staple fibres, containing 85% or more by weight of polyester, not put up for retail sale | 10.6% | Free | Free with certificate |
| 5509.31 | Yarn; (not sewing thread), single, of synthetic staple fibres, containing 85% or more by weight of acrylic or modacrylic, not put up for retail sale | 9% | Free | Free with certificate |
| 5509.32 | Yarn; (not sewing thread), multiple (folded) or cabled, of synthetic staple fibres, containing 85% or more by weight of acrylic or modacrylic, not put up for retail sale | 10% | Free | Free with certificate |
| 5509.41 | Yarn; (not sewing thread), single, containing 85% or more by weight of synthetic staple fibres, n.e.c. in heading no. 5509, not put up for retail sale | 9% | Free | Free with certificate |
| 5509.42 | Yarn; (not sewing thread), multiple (folded) or cabled yarn, containing 85% or more by weight of synthetic staple fibres, n.e.c. in heading no. 5509, not put up for retail sale | 7% | Free | Free with certificate |
| 5509.51 | Yarn; (not sewing thread), of polyester staple fibres, mixed mainly or solely with artificial staple fibres, not put up for retail sale | 9.7% | Free | Not eligible |
| 5509.52 | Yarn; (not sewing thread), of polyester staple fibres, mixed mainly or solely with wool or fine animal hair, not put up for retail sale | 12% | Free | Free with certificate |
| 5509.53 | Yarn; (not sewing thread), of polyester staple fibres, mixed mainly or solely with cotton, not put up for retail sale | 13.2% | Free | Free with certificate |
| 5509.59 | Yarn; (not sewing thread), of polyester staple fibres, mixed mainly or solely with fibres n.e.c. in item no. 5509.5, not put up for retail sale | 13.2% | Free | Free with certificate |
| 5509.61 | Yarn; (not sewing thread), of acrylic or modacrylic staple fibres, mixed mainly or solely with wool or fine animal hair, not put up for retail sale | 13.2% | Free | Free with certificate |
| 5509.62 | Yarn; (not sewing thread), of acrylic or modacrylic staple fibres, mixed mainly or solely with cotton, not put up for retail sale | 12% | Free | Free with certificate |
| 5509.69 | Yarn; (not sewing thread), of acrylic or modacrylic staple fibres, mixed mainly or solely with fibres n.e.c. in item no. 5509.6, not put up for retail sale | 9% | Free | Not eligible |
| 5509.91 | Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with wool or fine animal hair, n.e.c. in heading no. 5509, not put up for retail sale | 12% | Free | Free with certificate |
| 5509.92 | Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with cotton, n.e.c. in heading no. 5509, not put up for retail sale | 7.5% | Free | Free with certificate |
| 5509.99 | Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with fibres (other than wool, fine animal hair or cotton), n.e.c. in heading no. 5509, not put up for retail sale | 9% | 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.
