Short answer: China is rapidly expanding foundational (mature-node) chip capacity, but the available evidence does not show it leading the overall foundry market. TSMC still held 73% of pure-play foundry revenue in the second quarter of 2026, compared with 5% for China’s SMIC. At the same time, U.S. projects—especially TSMC’s Arizona expansion—are rebuilding domestic leading-edge logic capacity, much of it still planned rather than producing.
What “chip edge” and “foundry leadership” actually measure
A foundry manufactures semiconductors designed by other companies. “Leading-edge” refers to the newest process generations available at a particular time; “foundational” or “mature-node” processes are older technologies that remain essential in vehicles, industrial equipment, communications products and consumer electronics.
Those categories should not be combined into one ranking. A country can add large amounts of mature-node capacity without matching another company’s advanced-logic capability. Likewise, revenue share, wafer-fabrication capacity, unit output and a country’s share of production are different measurements.
| Measure | Reported figure | What it shows |
|---|---|---|
| Pure-play foundry revenue, Q2 2026 | TSMC 73%; SMIC 5% (Counterpoint Research) | TSMC remained far larger by this market measure; it is not a capacity or unit-output comparison. |
| U.S. share of global leading-edge logic manufacturing | 0% in 2022, projected at 20% in 2030 (Commerce estimate reported by GAO) | A government projection tied to supported projects, not a current result or a forecast that the U.S. will lead all chipmaking. |
| China’s foundational-chip market share | 19% in 2015, 33% in 2023 (U.S.-China Economic and Security Review Commission) | Rapid growth in mature-node products, not advanced-node logic leadership. |
| China’s share of global foundational-chip wafer capacity | 34% in 2024 (TrendForce estimate cited by the Commission) | A capacity estimate for foundational chips, not the whole foundry industry. |
TSMC is headquartered in Taiwan and operates facilities in several countries, so the location of a fab is not the same as the nationality of the company. Its reported company-wide manufacturing capacity exceeded 17 million 12-inch-equivalent wafers in 2025, across the facilities covered by its disclosure.
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How far the U.S. semiconductor buildout has progressed
The CHIPS and Science Act, signed in August 2022, created federal incentives for semiconductor factories, research and related infrastructure. The Commerce Department’s Inspector General describes $39 billion for semiconductor facility and related assistance, $11 billion for regional technology hubs, and $10 billion for National Institute of Standards and Technology research and small-manufacturer support.
A U.S. Government Accountability Office review provides a July 2025 status snapshot. Commerce had awarded 19 companies funding for 40 facility projects:
- $30.9 billion in direct funding had been awarded.
- $5.5 billion in loans had been awarded.
- Nearly 40% of the projects were intended to produce leading-edge logic chips.
- Project milestones ran from November 2024 through October 2033, and Commerce had verified only some milestones by July 2025.
The awards cover multiple supply-chain stages and are not equivalent to completed production capacity. GAO did identify a Phoenix leading-edge facility that had been completed and certified in June 2025, but the broader portfolio remained at different stages of construction, qualification and planning.
What the 20% projection means
Commerce estimates that the supported projects could raise the U.S. share of global leading-edge logic manufacturing from 0% in 2022 to 20% by 2030, according to GAO’s 2026 report. This is an expectation based on the funded project portfolio. It is not a measured 2026 share, and it does not mean the United States will produce 20% of all semiconductors or lead the global foundry market.
TSMC Arizona: production today versus the announced buildout
TSMC’s 2025 annual report says its first Arizona fab entered high-volume production in the fourth quarter of 2024. The fab was producing N4, a process in TSMC’s 4-nanometer family, according to the Arizona Commerce Authority’s July 16, 2026 announcement.
Current and expected Arizona milestones
| Facility or plan | Status and timing | Qualification |
|---|---|---|
| Arizona Fab 1 | High-volume production began in Q4 2024 | Reported by TSMC; Arizona announcement identifies N4 production from late 2024. |
| Arizona Fab 2 | Construction was described as complete; 3-nanometer volume production is expected in 2027 | Expected production is not the same as current output. |
| Arizona Fab 3 | Construction began in 2025 | Not yet a completed production asset in the cited status. |
| Additional Arizona program | TSMC announced another planned $100 billion investment on July 16, 2026, bringing announced Arizona investment to $265 billion | Plans cover ten fabs, two advanced-packaging facilities and an R&D center; announced investment is not completed capacity. |
TSMC separately reported that its N2 process entered high-volume manufacturing in Taiwan in the fourth quarter of 2025, with a fast ramp expected during 2026. That milestone was in Taiwan, not Arizona. Keeping those geographies separate prevents a planned U.S. fab from being counted as current U.S. production.
The “30% in Arizona” figure
The Arizona Commerce Authority projects that about 30% of TSMC’s 2-nanometer-and-more-advanced capacity will be located in Arizona once the announced fabs are completed. This is a future share of TSMC’s own advanced capacity. It is not 30% of global chip production, 30% of current TSMC output, or 30% of today’s Arizona production.
Why China’s mature-node expansion is significant
The U.S.-China Economic and Security Review Commission’s 2025 assessment says China’s foundational-chip production capacity grew more than four times faster than global demand from 2015 through 2023. It reports that China’s foundational-chip market share increased from 19% in 2015 to 33% in 2023. The Commission also cites a TrendForce estimate placing 34% of global wafer-fabrication capacity for foundational chips in China in 2024.
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Where the growth could continue
The Commission projects that China-based chipmakers could account for nearly half of new mature-node capacity added over the following three to five years. That is a capacity outlook, not a guaranteed production total. Factories still need equipment, customers, qualified processes, workers and sustained demand before announced capacity becomes usable output.
The same assessment says China remains behind in localizing advanced chipmaking equipment and that export controls on chipmaking technology likely delayed efforts to develop an advanced chipmaking industry. Those constraints help explain why strong mature-node expansion does not automatically translate into leading-edge leadership.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why customers are turning to Chinese foundries in some segments
TrendForce reported on June 30, 2026, that the average utilization rate across the top ten foundries’ 8-inch fabs was 88% in 2026 and expected it to reach 90% in the second half of the year. The figures are analyst estimates and a forecast. TrendForce also described tight mature-node supply and said more customers were considering Chinese foundries as alternative manufacturing partners.
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That pattern supports a narrower conclusion: Chinese foundries may capture more mature-node orders when capacity is tight or customers want additional suppliers. It does not overturn Counterpoint Research’s Q2 2026 revenue-share comparison, in which TSMC held 73% of pure-play foundry revenue and SMIC 5%.
Who leads depends on the question
| Reader’s question | Best-supported answer |
|---|---|
| Who leads pure-play foundry revenue? | TSMC, with 73% in Counterpoint Research’s Q2 2026 comparison; SMIC had 5%. |
| Who is adding foundational-node capacity fastest? | China has documented rapid growth, including capacity growth more than four times faster than global demand from 2015 to 2023. |
| Is U.S. leading-edge capacity returning? | Yes, through completed and planned projects, but much of the capacity is still under construction or scheduled for later years. |
| Does China currently lead advanced logic? | The cited evidence does not establish that conclusion. China’s reported gains are concentrated in foundational nodes, while equipment and export-control constraints remain. |
| Will China lead the entire foundry market in the future? | That is unresolved. Outcomes depend on construction, yields, demand, export policy and how much announced capacity actually comes online. |
What this means for supply-chain resilience
More U.S. fabrication can reduce dependence on a single Asian production geography, but a fab is only one part of the semiconductor chain. Materials, manufacturing equipment, advanced packaging, testing, design tools and skilled labor remain separate dependencies.
GAO notes that about three-quarters of chips were manufactured and packaged in Asia as of 2022, according to the source cited in its report. Moving some leading-edge wafer production to Arizona therefore improves resilience without making the entire supply chain domestic.
For businesses and households, the practical effects are indirect. Greater mature-node capacity can ease shortages for products that use older processes, while advanced chips remain sensitive to yields, packaging and equipment constraints. Government support, new plants and market-share headlines should not be treated as proof that prices, availability or investment returns will move in a particular direction.
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Bottom line on the headline
The evidence supports two separate statements, not one sweeping handoff of leadership. The United States is rebuilding leading-edge logic capacity, with TSMC’s Arizona operations already producing and a much larger announced buildout still ahead. China is expanding foundational-node capacity quickly and could win more mature-node business. But by the cited Q2 2026 pure-play foundry revenue measure, TSMC remains dominant, and no available figure establishes that China is poised to lead the overall foundry market.
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