Import duty / Chapter 90 / Heading 9031
Heading 9031 covers 6 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 |
|---|---|---|---|---|
| 9031.10 | Machines; for balancing mechanical parts | Free | Free | Free with certificate |
| 9031.20 | Test benches | 1.7% | Free | Free with certificate |
| 9031.41 | Optical instruments and appliances; for inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices, n.e.c. in chapter 90 | Free | Free | Free with certificate |
| 9031.49 | Optical instruments and appliances; for measuring or checking, n.e.c. in chapter 90 | Free | Free | Not eligible |
| 9031.80 | Instruments, appliances and machines; for measuring or checking n.e.c. in chapter 90 | Free | Free | Not eligible |
| 9031.90 | Instruments, appliances and machines; parts and accessories for those measuring or checking devices of heading no. 9031 | 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 90: Optical, photographic, cinematographic, measuring, checking, medical or surgical instruments and apparatus; parts and accessories · Every chapter
