Apple’s main processor supplier TSMC has announced another increase in US investment, saying its new plants will include ones making its most advanced chips.

In May 2026, TSMC announced an additional $20 billion investment in its Arizona plants. Now according to the Financial Times, the company has revealed plans to build four more plants, costing a total of $100 billion.

Howard Lutnick, US commerce secretary, said that the extra investment would “create tens of thousands of American jobs and bring advanced semiconductor manufacturing back to America.”

The investment in new plants will reportedly include factories making “2nm and below” processors, plus advanced packaging. TSMC’s first Arizona plant is believed to be producing 4-nanometer wafers, though there were already plans for 2nm manufacturing by 2030.

In 2025, it was reported that TSMC’s Arizona plants were producing the A16 processor. That was used in the iPhone 14 and iPhone 15 ranges, which have not been in production for some time.

TSMC has not announced a schedule for the new investment. CEO CC Wei said that “we will try to speed it up as fast as possible,” but that it depends on “the market situation and customer demand.”

This announcement increases TSMC’s total US investment to $265 billion, and follows the company’s latest financial earnings report. That report says TSMC profits rose 77% and the company attributes this to the demand for AI processors.

CEO Wei said he believes that demand for AI processors will remain very strong until 2029-2030.

It is this demand that is causing the global shortage of chips, and consequently a drive to add new production facilities. There is also a political element for TSMC, which as the CIA privately briefed Tim Cook, has reasons to fear a Chinese invasion of Taiwan by 2027.

There has also been continued pressure from the Trump administration to reshore manufacturing. One of the reasons Apple secured an exemption from Trump’s tariffs is said to be a commitment to buy processors from US-based Intel.

That deal is said to be a multi-year commitment. It follows the Trump administration investing in Intel in return for shares.