Import duty / Chapter 55 / Heading 5503
Heading 5503 covers 6 tariff lines in LoadLoom's table; 4 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 |
|---|---|---|---|---|
| 5503.11 | Fibres; synthetic staple fibres, of aramids, not carded, combed or otherwise processed for spinning | 4.3% | Free | Free with certificate |
| 5503.19 | Fibres; synthetic staple fibres, of nylon or other polyamides other than aramids, not carded, combed or otherwise processed for spinning | Free | Free | Not eligible |
| 5503.20 | Fibres; synthetic staple fibres, of polyesters, not carded, combed or otherwise processed for spinning | 4.3% | Free | Free with certificate |
| 5503.30 | Fibres; synthetic staple fibres, acrylic or modacrylic, not carded, combed or otherwise processed for spinning | 4.3% | Free | Free with certificate |
| 5503.40 | Fibres; synthetic staple fibres, of polypropylene, not carded, combed or otherwise processed for spinning | 4.3% | Free | Free with certificate |
| 5503.90 | Fibres; synthetic staple fibres, of synthetic materials n.e.c. in heading no. 5503, not carded, combed or otherwise processed for spinning | 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.
