August 24, 2026 admin

Trade Alert: Suspension Period Ends, Section 338 Duties Now in Effect


Monday, August 24, 2026

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Trade Alert: Suspension Period Ends, Section 338 Duties Now in Effect 

U.S. Customs and Border Protection (CBP) has issued implementation guidance in CSMS #69606660 regarding Presidential Proclamations imposing additional duties under Section 338 of the Tariff Act of 1930. Following the expiration of the temporary suspension period, the additional duties are now in effect. 



Effective August 22, 2026, at 12:01 a.m. ET, an additional 50% ad valorem duty applies to certain products of Canada classified under the specified HTSUS provisions outlined in the proclamations and CBP guidance. The duties are administered through HTSUS Chapter 99 provisions 9903.03.12 through 9903.03.16, which must be reported in addition to the applicable Chapter 1-97 tariff classification and all other applicable HTSUS reporting provisions. 

Importers should review the applicable tariff classifications carefully to determine whether their products are subject to the additional duties.  

https://content.govdelivery.com/bulletins/gd/USDHSCBP-4261d04?wgt_ref=USDHSCBP_WIDGET_2

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Disclaimer: The information provided here is for informational purposes only and is offered without liability on the part of Willson International. It is based on the best available information; however, the tariff environment is rapidly changing, and some details may become outdated. Any advice and/or information contained in this communication is not binding on U.S. Customs and Border Protection (CBP) or the Canada Border Services Agency (CBSA), nor does it satisfy the requirements for “reasonable care” in conducting your customs business. For the most up-to-date and accurate information, please contact your customs broker or trade advisor.

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