Can TSMC Defend Its Profit Margins While Racing to Expand Globally?

Taiwan’s chipmaking giant continues to print impressive profits even as it aggressively builds production facilities outside its home turf. TSMC is establishing new fabs across the US, Japan, and Germany—a strategic pivot designed to capture surging demand for AI and advanced computing processors while insulating itself from geopolitical supply chain risks.

The tradeoff? Operating costs overseas are considerably steeper. The company is bracing for near-term margin compression around 2%, potentially widening to 3-4% as these facilities ramp up production. Yet here’s the surprising part: despite these headwinds, TSMC’s gross margin actually expanded to 59.5% in Q3 2025, up 170 basis points year-over-year. Management is guiding for Q4 gross margin between 59% and 61%, suggesting another 100 basis point year-over-year gain at the midpoint.

So how is TSMC maintaining such healthy margins amid these expansion costs? The company is betting heavily on three factors: economies of scale, manufacturing automation, and government subsidies in the countries where it’s building. As production volumes ramp at these new sites, the cost-per-chip should decline meaningfully. TSMC appears confident that by the time these overseas fabs are running at full capacity, the margin gap will narrow considerably—enough to justify the upfront investment.

Revenue Momentum Shows No Signs of Slowing

The numbers back up management’s confidence. TSMC’s Q3 revenues hit $33.1 billion, representing 40.8% year-over-year growth. Wall Street consensus expects this runway to continue, with revenue forecasts calling for 33.7% growth in 2025 and 20.6% in 2026. The tailwind from AI chip demand remains powerful—customers are actively seeking geographically diversified suppliers for cutting-edge nodes like 2nm and A16, and TSMC is positioned as the preferred partner.

The Competition Isn’t Sitting Still

Intel and GlobalFoundries are making their own aggressive moves in the foundry market. Intel is heavily investing in its foundry division and developing its 18A process (roughly 1.8nm equivalent), which the company claims will deliver superior performance and power efficiency compared to TSMC’s upcoming N2 generation. Meanwhile, GlobalFoundries, despite focusing on mature nodes, is seeing meaningful demand from AI applications in edge computing and embedded systems. The company is expanding capacity across the US and Europe to capture customers seeking supply-chain diversity.

Valuation and Outlook

Year-to-date, TSMC shares have appreciated roughly 54.1%, outpacing the broader Computer and Technology sector’s 28.9% gain. From a valuation lens, TSMC trades at a forward P/E of 25.06—actually below the sector average of 29.03—suggesting the market hasn’t fully priced in the long-term margin potential if overseas operations reach efficiency. Consensus earnings estimates project 43.9% growth for 2025 and 20.2% for 2026. Though recent estimate revisions have trended slightly lower, the underlying growth narrative remains intact.

The real question: can TSMC execute flawlessly on this global expansion while maintaining the operational excellence that’s made it the world’s premier contract chipmaker? If margins hold or expand despite higher overseas costs, TSMC’s shareholders could see meaningful re-rating as the market realizes the durability of profitability through this transition.