Import duty / Chapter 84 / Heading 8404
Heading 8404 covers 3 tariff lines in LoadLoom's table; 3 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 |
|---|---|---|---|---|
| 8404.10 | Boilers; auxiliary plant, for use with boilers of heading no. 8402 or 8403 (e.g. economisers, super-heaters, soot removers, gas recoverers) | 3.5% | Free | Free with certificate |
| 8404.20 | Boilers; condensers, for steam or other vapour power units | 5% | Free | Free with certificate |
| 8404.90 | Boilers; parts of auxiliary plant, for use with boilers of heading no. 8402 and 8403 and parts of condensers for steam or other vapour power units | 3.5% | 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.
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Chapter 84: Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof · Every chapter
