Overview
- The Commerce Department made the new rate effective at 12:01 a.m. ET on Sept. 16 by trimming the April add-on levy to 12.5% atop the longstanding 2.5% duty.
- Reciprocal-tariff provisions set a 15% floor for items previously below that level, bar extra surcharges on goods above 15%, and apply refunds retroactive to Aug. 7, with certain items such as civil aircraft parts excluded.
- President Trump signed a Sept. 4 order to implement the U.S.–Japan agreement, formalizing tariff relief tied to Japanese investment and purchase commitments reported at roughly $550 billion.
- Industry groups welcomed reduced uncertainty, with the Japan Foreign Trade Council saying competitive concerns versus the EU and South Korea eased, though the 15% burden remains significant and cost sharing is unclear.
- Legal risks persist as China and Brazil pursue WTO cases, a U.S. appeals court found the tariff authority exceeded in August, and the Supreme Court has scheduled oral arguments for November.