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.

TSMC plant in Arizona - image credit: Christopher Payne

In May 2026, TSMC announced an additional [$20 billion](https://appleinsider.com/articles/26/05/15/apples-us-chip-plan-gains-steam-thanks-to-20b-tsmc-investment) investment in its Arizona plants. Now according to the *Financial Times*, the company [has revealed](https://www.ft.com/content/491927e1-1532-486d-94ec-8d6ee2de7bcd) 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."

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