The deal will hike TSMC’s investment in Arizona from the current $165bn to a total of $465bn.
In return for the deal the US will reduce its tariff rate on Taiwanese exports to the US to 15%.
Last week TSMC paid $197m at an auction for 900 acres of land next door to TSMC’s existing fab sites in Arizona.
As well as the planned 11 fabs, TSMC will build two packaging plants and an R&D centre in Arizona.
