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TSMC says that, once its announced Arizona fabs are complete, around 30% of its global manufacturing capacity for 2nm and more advanced technologies will be located in Arizona. That is a future capacity target—not a claim that the United States currently makes 30% of TSMC’s 2nm chips or output. The company has not stated when all the fabs will be finished or when the target share will be reached.
What does TSMC’s 30% target mean?
The figure is about TSMC’s 2nm and more advanced manufacturing capacity. It does not refer to 30% of all TSMC chips, all chips made in the United States, or necessarily 30% of units shipped. The Arizona Commerce Authority described the share as a projection for after the announced fabs are complete; TSMC made a similar statement in 2025.
In other words, the announcement describes where TSMC expects a portion of its future advanced-node capacity to be located. It does not provide enough information to calculate how many chips that share would represent.
What is planned for Arizona?
On July 16, 2026, the Arizona Commerce Authority reported TSMC’s plan to invest an additional $100 billion in Arizona and build four more fabs for 2nm or more advanced technologies. The authority said that, after the announced fabs are complete, around 30% of TSMC’s capacity in those technology classes would be in Arizona. These are announcement figures and a projection, not an independently audited forecast.
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The announcement does not give a firm completion date for all the fabs or a date for reaching the 30% share. It also does not provide facility-by-facility capacity figures or the assumptions behind the percentage, so the projection cannot be independently reconstructed from the cited details.
What is TSMC already producing in Arizona?
Arizona is already part of TSMC’s manufacturing footprint, but the cited current-production milestone is for an older process than 2nm: the Arizona Commerce Authority says TSMC’s first Arizona fab has been in volume production of N4 since late 2024. That fact does not establish current Arizona production of 2nm-class chips.
How does this relate to earlier Arizona plans?
In an April 2024 announcement, the U.S. Department of Commerce described plans for TSMC’s second Arizona fab to use 2nm nanosheet technology and for its third to use 2nm-or-more-advanced technology, depending on demand. That was the plan as described at the time; it is not a complete current construction schedule for all the fabs subsequently announced.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the announcement does—and does not—establish
- It establishes a target: around 30% of TSMC’s 2nm-and-more-advanced capacity in Arizona once the announced fabs are complete.
- It establishes an expansion plan: TSMC announced an additional $100 billion for four more Arizona fabs intended for 2nm or more advanced technologies.
- It does not establish present-day output: the 30% figure is not a description of current production or shipments.
- It does not establish the timeline or calculation: the cited statements do not disclose when all fabs will be complete, when the target would be reached, or how capacity was calculated.
TSMC described its goal as building “an independent leading-edge semiconductor manufacturing cluster,” as reported by the Arizona Commerce Authority. That language expresses the company’s stated ambition; it does not change the capacity projection into a measured result.
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