US import duty on ignition wiring sets and other wiring sets of a kind used in vehicles, aircraft or ships from Mexico
Verified: worked out 2 independent ways from the tariff schedule, and the 2 readings agree.
Ignition wiring sets and other wiring sets of a kind used in vehicles, aircraft or ships, imported from Mexico: the effective US import duty is 50%, read from HTS 2026 Revision 18 on 10 September 2026.
- Assumes a trade-agreement claim; without it the rate is higher.
On a unit that cost you $100, the duty is $50.00 and the landed cost before freight and brokerage is $150.00. What that does to a margin, and what else counts in landed cost, is worked through in the landed cost note.
The working
Tariff line 8544.30.00.00, classified in the schedule as: Insulated (including enameled or anodized) wire, cable (including coaxial cable) and other insulated electric conductors, whether or not fitted with connectors; optical fiber cables, made up of indivi › Ignition wiring sets and other wiring sets of a kind used in vehicles, aircraft or ships. Base duty: special column 'Free' via SPI 'S' on 8544.30.00.00 (assumes FTA qualification/claim).
| Layer that applies | What it is | Adds |
|---|---|---|
| 9903.74.08 | adds 25 points | +25 |
| 9903.94.05 | adds 25 points | +25 |
How current is this?
This page is rendered from the record the pipeline wrote at 06:10 UTC on 10 September 2026, reading HTS 2026 Revision 18. The schedule is read again at 06:10 and 18:10 UTC every day, each rate is worked out 2 independent ways, and a layer is left out only on a court ruling, a Federal Register action or a CBP notice. If you are reading this long after that date, the number may have moved; the date is on the page so that a quote of it carries its own expiry.
Duty Diligence does this for every product in a Shopify store, from the cost, HS code and country of origin already kept there, and shows the landed cost and margin per product. The margin snapshot is free: Duty Diligence on the Shopify App Store.
Informational estimate from published sources, read at hts.usitc.gov, and not customs, legal or financial advice. The classification of your own goods is a judgement this page does not make. How a rate is built, step by step: the worked example.