New 50% Duty on Semi-Finished and Derivative Copper Products Takes Effect August 1

New 50% Duty on Semi-Finished and Derivative Copper Products Takes Effect August 1

Guidance on the 50% Section 232 Duty on Semi-Finished and Derivative Copper Products, CSMS# 65794272

This message provides guidance for importers, brokers, and entry filers on the application of the 50 percent ad valorem duty imposed under Section 232 of the Trade Expansion Act of 1962 on imports of semi-finished copper products and intensive copper derivative products.

BACKGROUND

On July 30, 2025, the President issued a Proclamation titled “Adjusting Imports of Copper into the United States” under Section 232 of the Trade Expansion Act of 1962, as amended (19 U.S.C. § 1862). The Proclamation imposes a 50 percent ad valorem duty on imports of semi-finished copper products and intensive copper derivative products from all countries. To view the CSMS from CBP click here.

EFFECTIVE DATE

The duty applies to goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. EDT on August 1, 2025.

Importers are responsible for accurately declaring copper content and ensuring proper classification under the HTSUS.

DOCUMENTATION REQUIREMENTS AND ENFORCEMENT

For Section 232 duties assessed on the copper content—where the duty is calculated based on a value other than the total value of the imported good—importers must maintain and, upon request, provide U.S. Customs and Border Protection (CBP) with sufficient supporting documentation to substantiate the reported copper values.

Acceptable documentation may include, but is not limited to:

• Bills of materials used in the production of the imported goods;

• Invoices for raw materials containing copper; and

• Accounting or cost documentation verifying the allocation of copper content in the declared value.

Failure to provide adequate documentation to support the declared copper value may result in CBP assessing the 50% ad valorem duty on the full value of the imported good.

Importers who submit inaccurate or underreported copper valuations may face severe consequences, including:

• Significant monetary penalties;

• Suspension or revocation of import privileges; and

• Criminal liability, in accordance with U.S. law.

If you have any questions regarding this please contact your account representative at Western Overseas for more information.