Import duty / Chapter 29 / Heading 2939
Heading 2939 covers 19 tariff lines in LoadLoom's table; 18 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 |
|---|---|---|---|---|
| 2939.11 | Alkaloids; of opium and their derivatives; salts thereof | Free | Free | Free with certificate |
| 2939.19 | Alkaloids; of opium and their derivatives; other than in 2939.11, salts thereof | Free | Free | Not eligible |
| 2939.20 | Alkaloids; of cinchona and their derivatives; salts thereof | Free | Free | Free with certificate |
| 2939.30 | Alkaloids; caffeine and its salts | Free | Free | Free with certificate |
| 2939.41 | Alkaloids; of ephedrine and their derivatives; salts thereof | Free | Free | Free with certificate |
| 2939.42 | Alkaloids; of ephedrine and their derivatives; pseudoephedrine (INN) and its salts | Free | Free | Free with certificate |
| 2939.43 | Alkaloids; of ephedrine and their derivatives; cathine (INN) and its salts | Free | Free | Free with certificate |
| 2939.44 | Alkaloids; of ephedrine and their derivatives; norephedrine and its salts | Free | Free | Free with certificate |
| 2939.45 | Alkaloids; of ephedrine and their derivatives; levometamfetamine, metamfetamine (INN), metamefetamine racemate and their salts | Free | Free | Free with certificate |
| 2939.49 | Alkaloids; of ephedrine and their derivatives; other than ephedrine, pseudoephedrine (INN), norephedrine, cathine (INN), levometamfetamine, metamfetamine (INN), metamefetamine racemate and their salts | Free | Free | Free with certificate |
| 2939.51 | Alkaloids; theophylline and aminophylline (theophylline-ethylenediamine) and their derivatives; salts thereof, fenetylline (INN) and its salts | Free | Free | Free with certificate |
| 2939.59 | Alkaloids; theophylline and aminophylline (theophylline-ethylenediamine) and their derivatives; salts thereof, other than fenetylline | Free | Free | Free with certificate |
| 2939.61 | Alkaloids; of rye ergot and their derivatives, ergometrine (INN) and its salts | Free | Free | Free with certificate |
| 2939.62 | Alkaloids; of rye ergot and their derivatives, ergotamine (INN) and its salts | Free | Free | Free with certificate |
| 2939.63 | Alkaloids; of rye ergot and their derivatives, lysergic acid and its salts | Free | Free | Free with certificate |
| 2939.69 | Alkaloids; of rye ergot and their derivatives, salts thereof, n.e.c. in item no. 2939.6 | Free | Free | Free with certificate |
| 2939.72 | Alkaloids; of vegetal origin, cocaine, ecgonine; salts, esters and other derivatives thereof | Free | Free | Free with certificate |
| 2939.79 | Alkaloids; of vegetal origin, other than cocaine, ecgonine; salts, esters and other derivatives; n.e.c. in heading no. 2939 | Free | Free | Free with certificate |
| 2939.80 | Alkaloids; natural or reproduced by synthesis, and their salts, esters and other derivatives n.e.c. in heading no. 2939 | 6.5% | Free | Free with certificate |
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.