Import duty / Chapter 35 / Heading 3507
Heading 3507 covers 2 tariff lines in LoadLoom's table; 1 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 |
|---|---|---|---|---|
| 3507.10 | Enzymes; rennet and concentrates thereof | Free | Free | Free with certificate |
| 3507.90 | Enzymes and prepared enzymes; other than rennet and concentrates thereof | 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.
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Chapter 35: Albuminoidal substances; modified starches; glues; enzymes · Every chapter
