TSMC accelerates Arizona as N2 ramps and capex blows past $165B
Four US fabs fully booked, second Arizona fab pulls 3nm tool-install into Q3 2026; full-year revenue guided up >30% on AI demand still outpacing supply
Summary
TSMC is accelerating its US build-out as Taiwan-based N2 (2nm) ramps. N2 entered volume production in Q4 2025 at Hsinchu and Kaohsiung; N2P follows in H2 2026. In Arizona, the first fab has run 4nm in high volume since 4Q24; the second fab pulled 3nm tool-install into Q3 2026 (mass production 2H 2027), and a third fab will use N2/A16. All four US fabs are reportedly fully booked. Capex for the current six-fab US phase has climbed past $165B (from ~$65B), within a long-term framework near $465B. TSMC guided Q2 2026 revenue to $39.0-40.2B at 65.5-67.5% gross margin and lifted full-year 2026 growth guidance above 30%, with AI demand from Nvidia and others still outpacing supply, and CoWoS/SoIC packaging the binding bottleneck.
By the numbers
$165B, capex for the current six-fab Arizona phase (up from ~$65B); long-term framework ~$465B.
- 4, US fabs reportedly fully booked.
- Q3 2026, pulled-forward 3nm tool-install at Arizona Fab 2 (mass production 2H 2027).
- $39.0-40.2B, TSMC Q2 2026 revenue guidance (~10% sequential); 65.5-67.5% gross margin.
30%, guided full-year 2026 revenue growth (USD terms).
Why it matters
TSMC builds the silicon nearly every AI accelerator depends on, and Arizona is the hedge against Taiwan concentration risk that Washington has demanded. The accelerated timeline and booked capacity show customers will pay the US cost premium for supply security, but advanced packaging, not wafers, is now the constraint that paces the whole AI buildout.
What to watch
- TSMC Q2 2026 earnings in mid-July, guidance and capex detail.
- CoWoS/SoIC packaging capacity vs N2 wafer ramp.
- Whether Arizona Fab 2's pulled-forward schedule holds.