Quick Reminder for Importers

The U.S. Department of Commerce issued a notice yesterday serving as a reminder that reciprocal tariffs on all Japanese-origin goods will be effective today, Tuesday, September 16, 2025.  Subsequently, U.S. Customs and Border Protection (CBP) issued Cargo Systems Messaging Service (CSMS) No. 66242844 explaining the implementation of the US/Japan modification of the US/Japan Agreement. The key issues detailed within the recent CSMS #66242844 include:

• The United States will apply a baseline 15 percent tariff on nearly all Japanese imports entering the United States, alongside separate sector-specific treatment for automobiles, automobile parts, civil aircraft and aerospace products.
• On September 15, 2025, Commerce posted the implementing notice, Implementing Certain Tariff-Related Elements of the United States-Japan Agreement, with the relevant HTSUS modifications and 99 numbers for public inspection on the Federal Register’s website, with a scheduled publication date of September 16, 2025.
• As an update to the guidance issued through CSMS 66146676 “Interim Guidance: Retroactive Implementation of the US-Japan Agreement”, filers can update their previously filed entries to apply the newly issued tariff rates. The new rates shall apply retroactively to products of Japan that are entered for consumption or withdrawn from warehouse for consumption on or after 12:01 a.m. eastern daylight time on August 7, 2025.

For additional details on the trade deal with Japan, please refer to our Trade Alert dated September 9, 2025.

Due to the rapidly changing application and modifications of duty rates, please note that Deringer is not responsible for coordinating the timing of U.S. entry and imposed tariff rates.