Overview

• The auto tariff on vehicles from Japan formally shifted to 15% at 13:01 JST on September 16 following a U.S. Commerce Department notice.
• The new rate combines a reduced 12.5% surcharge with the preexisting 2.5% base tariff.
• A reciprocal‑tariff framework sets items previously below 15% to a uniform 15% and adds no extra duty to lines already at or above 15%.
• Duties collected above the new terms will be refunded retroactively to August 7, with specified exclusions such as parts for civil aircraft.
• Japan’s economic minister Ryomasa Akazawa welcomed the implementation but noted MFN language was not in the presidential order, and domestic critics question a reported $550 billion investment pledge linked to the deal.