Section 232 tariff guide for importers: national-security actions, affected categories, HTS review, source evidence, and landed-cost modeling.
Section 232 tariffs are national-security trade measures that can apply to specific product categories such as steel, aluminum, autos, or related products. Applicability depends on product classification, origin, effective date, exclusions, quotas, and official implementation guidance.
Copper is included in the April 2026 metals action; check the controlling annex and later amendments.
The category label alone is not enough.
Keep Section 232 separate from base duty and AD/CVD.
| 事实 | 值 |
|---|---|
| Legal basis | Trade Expansion Act of 1962, Section 232 |
| Primary scope | National-security product categories, not a country-wide tariff by itself |
| Common categories | Steel, aluminum, automobiles, auto parts, and copper and other proclamation-covered products |
| Common planning rates | Often 25%–50%, depending on the proclamation and product scope |
| Base duty relationship | Additional/product-specific layer; keep separate from MFN, Section 301, and AD/CVD |
| Importer checklist | HTS, product form, origin, Chapter 99, exclusions, quotas, CBP CSMS, and broker confirmation. |
The April 2026 proclamation changed covered steel, aluminum and copper treatment from April 6, including full-customs-value assessment for covered products and different annex-based rates. Product scope, metal origin, exceptions and subsequent amendments must be checked before quoting a shipment. Copper is already addressed in this proclamation; it is not merely a possible future investigation.
Start with the HTS code and product form. Then check official notices, any quota or exclusion program, Chapter 99 references, and CBP implementation messages.
A Section 232 layer can be large enough to change sourcing, customer pricing, and margin. Treat it as a scenario input until source-backed.
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No. Section 232 is a national-security authority; Section 301 is a trade-enforcement authority.
No. Applicability depends on official product scope, HTS classification, origin, and any exclusions or quotas.
Use an additional tariff layer in the calculator and attach the official source before broker review.
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