⚠ Rising Costs Erode the Margin FortressModerate threat

TSMC's extraordinary margins are the reward of its scale and technology lead, but they face a steady headwind of rising costs that an investor should weigh honestly. Each new process node costs more to develop, equip, and ramp than the last, and the early quarters of every node are margin-dilutive as yields climb — a drag TSMC flags each time it ramps a new generation like 2-nanometer. As the frontier gets harder and more expensive, maintaining today's margins requires ever-greater pricing power and efficiency just to stand still.

The overseas expansion compounds the pressure. Building and running fabs in Arizona, Japan, and Germany costs substantially more than in Taiwan¹ — higher construction costs, higher wages, lower initial yields, and the loss of the dense local supplier ecosystem — and TSMC has explicitly warned that these fabs will dilute its gross margin for years as they ramp, by 2% to 3% in the early stages and 3% to 4% later². So the margin fortress faces a two-front squeeze: the rising cost of each new node, and the strategically-mandated but economically-inferior diversification away from Taiwan. TSMC's pricing power, especially in AI-driven leading-edge chips, has more than offset these pressures recently, pushing margins to records even as costs rose. But the underlying cost trend is upward and structural, driven by physics and geopolitics both, and the exceptional margins that make TSMC such a wonderful business must be defended against a rising tide of cost that will not recede.