New Section 301 tariffs hit Chinese chips — starting at zero, by design
USTR ruled China's semiconductor dominance actionable and set new Section 301 tariffs on Chinese chips — at 0% now, rising in 2027. Why the zero is the real story.
- What: New Section 301 tariffs on Chinese semiconductors (mature-node chips, silicon-carbide wafers)
- When: Determination Dec 23, 2025; rate starts at 0%, scheduled to rise June 23, 2027
- Who's hit: Importers of Chinese chips and downstream electronics assemblers
- Impact: Layered on top of the existing 50% Section 301 semiconductor tariff
On December 23, 2025, USTR determined that China’s drive to dominate the semiconductor industry is unfair and burdensome to U.S. commerce — actionable under Section 301 — and set new tariffs on a wide range of Chinese chips, including mature-node semiconductors and silicon-carbide wafers.
The headline is the number that isn’t there. The rate starts at 0% and doesn’t rise until June 23, 2027 — an 18-month runway. That’s not leniency; it’s a scheduled increase with a fuse. And it stacks on top of the existing 50% Section 301 tariff on Chinese semiconductors from the earlier technology-transfer case.
For anyone importing Chinese chips — or assembling electronics that contain them — the move to make now is the boring one: use the runway. Map your exposure, qualify non-China sources, and don’t be the team re-engineering a bill of materials the week the rate turns on.
From our warehouse floor“A 0% headline rate with an 18-month fuse is a planning gift most importers waste. The teams that win use the runway to qualify non-China chip sources before the rate turns on.”
— MashBond customs desk
Informational only — not legal or customs advice. Verify against the primary source before acting.
