U.S. Section 301 Tariffs Take Effect July 24: Taiwan Set at 10%, Experts Say Semiconductor Impact 'Limited'

What are the Section 301 tariff rates for Taiwan, China, and Japan?

According to CNA (中央社), the U.S. published its Section 301 investigation results with Taiwan assigned a 10% tariff rate, while China and Japan were both set at 12.5% (E1, E2). Technews (科技新報) confirmed the same Taiwan figure, reporting that "the U.S. announced Section 301 investigation results imposing tariffs, with Taiwan's applicable rate at 10%" (E8).

Where does Taiwan's rate rank relative to other economies, and what does this mean for industry?

Taiwan Institute of Economic Research (台經院) president Chang Chien-yi (張建一) said the current result "looks favorable for Taiwan," since Taiwan's 10% rate sits below rivals' levels (E4). Technews (科技新報) echoed this assessment, noting that the institute's analysis found competitor rates higher than Taiwan's, making the outcome favorable for Taiwan overall (E8).

What products and economies are covered by Section 301, and how is the forced-labor ban being enforced?

Per CNA (中央社), the Office of the U.S. Trade Representative announced on July 23 that it would impose tariffs under Trade Act Section 301 targeting 60 economies that have failed to effectively implement and enforce bans on importing goods made with forced labor, with the measure taking effect July 24 (E3). This forced-labor enforcement action forms the legal backbone of the broader tariff rollout that also set the Taiwan, China, and Japan rates (E7).

When will the structural overcapacity investigation conclude, and what does it mean for Taiwan's semiconductor sector?

Liu Pei-chen (劉佩真), director of the Taiwan Institute of Economic Research's Industrial Economics Database, said the related investigation into structural overcapacity is expected to conclude by the end of July, but she believes the impact on the domestic semiconductor industry will be limited (E5). Technews (科技新報) added that the overcapacity issue under the Section 301 probe is more closely tied to mature-process manufacturing than to advanced nodes (E9).

How does exposure differ between advanced and mature process nodes?

Liu separated the discussion of advanced and mature process nodes, noting that advanced processes are more closely tied to Section 232 measures and face "very limited" impact from Section 301 (E6). By contrast, Technews (科技新報) reported that mature-process manufacturing is more closely linked to the Section 301 overcapacity investigation (E9), suggesting the risk profile diverges sharply by node type.

How did the legal basis for U.S. tariffs on Taiwan evolve?

According to CNA (中央社), after the legal basis for the earlier "reciprocal tariff" rate lapsed, the U.S. shifted to Section 122 of the 1974 Trade Act, temporarily imposing a uniform 10% tariff on all trading partners worldwide, stacked on top of existing Most Favored Nation (MFN) rates, with that measure running through July 24 (E7). This legal transition set the stage for the new Section 301 tariffs targeting 60 economies over forced-labor enforcement, which took effect the same day (E3).

How are Taiwan's second-tier foundries responding to the new trade environment?

Technews (科技新報) reported that in recent years, Taiwan's second-tier foundry operators, concerned about having to compete directly with China's "red supply chain" over the medium-to-long term, have gradually launched transformation efforts, with many already riding the AI wave (E10). This shift comes as the Section 301 overcapacity investigation is described as more relevant to mature-process manufacturing than advanced nodes (E9), the segment where many second-tier players compete.

Tariff Rates at a Glance

What this means

The evidence points to a bifurcated risk picture for Taiwan's chip industry. On one hand, Taiwan's 10% Section 301 rate came in below China and Japan's 12.5%, prompting Chang Chien-yi's (張建一) "favorable" assessment (E1, E2, E4, E8). On the other hand, Liu Pei-chen's (劉佩真) node-by-node breakdown shows the pending overcapacity investigation, due by end of July, carries limited relevance for advanced processes tied more to Section 232 but greater relevance for mature processes (E5, E6, E9) — precisely the segment where second-tier foundries have already been pushing transformation and AI-linked diversification amid competition from China's red supply chain (E10). The legal pivot from the lapsed reciprocal-tariff regime to Section 122's temporary global 10% surcharge, now succeeded by the Section 301 forced-labor action covering 60 economies, underscores how the tariff framework itself has been in flux through July 24 (E3, E7).