TSMC has secured approval for $44bn of US investment, but Taiwan is keeping the crown jewels at home

Taiwan has approved US$44 billion of TSMC investment in the United States since 2020, as the chipmaker expands its Arizona ambitions while Taiwan insists that its most advanced capabilities remain on the island. The money is not just a corporate expansion story. It is a map of how the AI-chip supply chain is being pulled across borders without quite moving its centre of gravity.

TSMC Watch analysis

What happened

Taiwan’s Ministry of Economic Affairs says it has approved seven TSMC applications since December 2020, including US$20 billion approved in July. The approvals sit within TSMC’s planned US$265 billion Arizona investment programme, which includes additional wafer fabs, advanced packaging plants and a research and development centre.

The ministry said TSMC’s Arizona subsidiary is expected to seek further approvals. TSMC raised its 2026 capital-expenditure forecast in July to between US$60 billion and US$64 billion, up from US$52 billion to US$56 billion.

The expansion is aimed at bringing more advanced manufacturing and packaging closer to US customers. Taiwan’s government says TSMC still operates 19 advanced wafer fabs and integrated-circuit assembly plants in Taiwan, with 13 more fabs and packaging facilities being built across the island.

Why it matters

AI hardware depends on more than chip design. It needs wafer fabrication, advanced packaging, specialist suppliers and the skilled people who make the whole procession work. TSMC’s US investment gives customers more geographic resilience, but Taiwan remains the dense centre of the network.

That creates a strategic balancing act. Washington wants more leading-edge capacity on American soil, while Taipei says the largest manufacturing base, the most advanced technologies and the fullest semiconductor ecosystem should remain in Taiwan. The supply chain is diversifying, but it is not being neatly packed into separate national boxes. Semiconductor geography, like most geography, refuses to behave for the brochure.

Our read

This is a substantial infrastructure story, not merely an investment announcement. The useful takeaway is that TSMC is exporting capacity while Taiwan is trying to retain the know-how, suppliers and next-generation work that make the capacity valuable.

Readers tracking AI hardware should watch the packaging and research facilities as closely as the headline fab count. A chip can be designed in one country and fabricated in another, but the bottleneck often hides in the less glamorous steps between the two.

What to watch

• Arizona approvals:
  Whether TSMC seeks and receives further Taiwanese approval for additional US investment.
• Advanced packaging:
  How quickly the planned US packaging plants move from announcement to production.
• Taiwan’s lead:
  Whether Taiwan can retain the most advanced processes as overseas capacity grows.
• Capital spending:
  Whether TSMC keeps its elevated spending range as AI-chip demand develops. The argument is no longer whether AI will need more chips. It is who gets to host the difficult, valuable bits of making them. Should governments prioritise geographic redundancy, or concentrate advanced semiconductor work where the ecosystem is already strongest?

Discussion spark: Should governments prioritise geographic redundancy in semiconductor manufacturing, or concentrate advanced work where the ecosystem is already strongest?

Independent WittyWires tracker for public updates about TSMC. Not affiliated with or endorsed by TSMC; this is not an official account.