The TSMC Arizona $20 billion investment has cleared its final regulatory hurdle in Taiwan, with the Ministry of Economic Affairs approving the capital injection into TSMC’s wholly owned American subsidiary this week. The approval marks the sixth time Taiwan’s Department of Investment Review has cleared a TSMC funding request for its US operations, pushing the cumulative total the department has approved for the company past $44 billion. According to the ministry, the newly approved funds will go toward building a 12 inch wafer fab and an advanced packaging plant in Phoenix, with further technical details still to come from TSMC itself. The approval was one of nine major investment decisions the department cleared in a single meeting, underscoring how central the Arizona buildout has become to Taiwan’s own industrial policy.

The funding sits inside a much larger commitment. TSMC first broke ground in Phoenix in 2021 on a $12 billion single fab plan that grew into a $65 billion three fab campus, and the company added another $100 billion in March 2025 for three additional fabs, two advanced packaging facilities, and a research center, bringing the total Arizona footprint to roughly $165 billion. TSMC calls it the largest greenfield foreign direct investment in American history. The first fab entered high volume production on 4 nanometer technology in the fourth quarter of 2024, the second fab finished its structural construction in 2025 with volume production targeted for the second half of 2027, and the third fab broke ground in April 2025 to eventually produce more advanced 2 nanometer and A16 chips. The campus now sits on more than 1,100 acres of land in north Phoenix and already employs more than 3,000 people, a workforce TSMC expects to grow substantially as the newer fabs and the packaging plant come online.

Phoenix Arizona’s Chip and Industrial Construction Boom

TSMC’s expansion has turned the north Phoenix corridor into one of the busiest construction zones in the country, and the ripple effects reach well beyond semiconductors. Suppliers, logistics operators, and equipment makers have all been racing to secure industrial space near the fab cluster, a trend visible even in smaller projects across the metro area. In nearby Tempe, developer Creation Equity broke ground on the Source Logistics Center, a 144,885 square foot Class A facility built specifically to serve the kind of last mile and supply chain demand that a manufacturing cluster the size of TSMC’s generates. While that project is a fraction of TSMC’s scale, its developer cited the same land constrained, high demand dynamics that have made greater Phoenix one of the most competitive industrial markets in the western United States.

TSMC’s own projections capture the scale of that effect. The company has said its expanded Arizona investment will support 40,000 construction jobs over four years and tens of thousands of permanent high tech positions once the fabs and packaging plant are fully staffed, with more than $200 billion in indirect economic output expected across Arizona and the country over the next decade. The federal government has backed the buildout with $6.6 billion in CHIPS Act grants and up to $5 billion in loan guarantees, support that has made Arizona the anchor site for the United States’ effort to bring advanced chip production back onto domestic soil.

TSMC Arizona Timeline and What Comes Next

Construction crews are currently working across three fabs at different stages, and TSMC has permits in process for a fourth fabrication plant and its first advanced packaging facility, the assets the newly approved $20 billion will help fund. Some reporting suggests TSMC’s ultimate ambitions for the site could stretch to as many as twelve fab modules and four packaging facilities over the next five to ten years, though the company has not confirmed that scope publicly and it would represent a cost well beyond the current $165 billion figure. The advanced packaging facility is a particularly important piece, since it would let TSMC offer a complete chip on wafer on substrate supply chain for AI processors entirely within the United States for the first time.

The near term risks are mostly about pace rather than viability. TSMC has already pulled forward its own construction schedule once, moving the third fab’s groundbreaking up by a year, and Taiwan’s National Development Council has said the first Arizona fab turned an operating profit faster than many analysts expected. Whether the fourth fab and packaging plant move as quickly will depend on customer demand for advanced nodes and on how fast TSMC can staff a campus that is already growing faster than its original plans anticipated.

Project Fact Sheet

• Project Name: TSMC Arizona (Fab 21 campus)
• Location: North Phoenix, Arizona, United States
• Project Value: Approximately $165 billion total planned investment, including the newly approved $20 billion capital injection, per TSMC and Taiwan’s Ministry of Economic Affairs
• Client/Owner: Taiwan Semiconductor Manufacturing Co., through its subsidiary TSMC Arizona
• Main Contractor: Sundt Construction (Fab 21)
• Key Components: Three fabs currently in production or under construction, a fourth fab and first advanced packaging plant now in permitting, and a planned research and development center
• Procurement Model: Direct capital investment by TSMC, supported by US federal grants and loan guarantees
• Construction Start: Initial groundbreaking in 2021, with the third fab breaking ground in April 2025
• Expected Completion: Second fab targeting volume production in the second half of 2027, with additional fabs and the packaging plant to follow by the end of the decade
• Jobs Created: More than 3,000 employed currently, with 40,000 construction jobs and tens of thousands of permanent positions expected as the expansion proceeds
• Strategic Impact: Represents the largest greenfield foreign direct investment in United States history and anchors the country’s effort to build a domestic advanced chip supply chain

Project Team

• Client/Owner: Taiwan Semiconductor Manufacturing Co.
• Main Contractor: Sundt Construction
• Regulatory Approval Body: Taiwan Ministry of Economic Affairs, Department of Investment Review
• Federal Funding Partner: US Department of Commerce under the CHIPS and Science Act

Frequently Asked Questions

How much is TSMC’s Arizona investment worth? TSMC’s total planned Arizona investment stands at roughly $165 billion, which now includes the newly approved $20 billion capital injection cleared by Taiwan’s government.

What will the new TSMC Arizona $20 billion investment fund? The funds are earmarked for a 12 inch wafer fab and an advanced packaging plant in Phoenix, according to Taiwan’s Ministry of Economic Affairs.

When will TSMC’s newer Arizona fabs be completed? TSMC’s second Arizona fab is targeting volume production in the second half of 2027, while the third fab and the planned fourth fab and packaging plant are expected to come online later in the decade.

Who is building TSMC’s Arizona fabs? Sundt Construction has served as general contractor on TSMC’s Fab 21 campus, with TSMC directing the overall Arizona buildout as owner.

How many jobs will the TSMC Arizona expansion create? TSMC expects its expanded Arizona investment to support 40,000 construction jobs over four years and create tens of thousands of permanent high tech jobs on top of the more than 3,000 people it already employs there.