[News] 12-inch Wafer Price Hikes Loom for 2027 as AI Demand Tightens Supply, with LTAs Reportedly Up 15–40%+
As the AI boom fuels capacity expansion across logic and memory, silicon wafers are emerging as another key beneficiary, with tightening 12-inch supply driving prices higher. According to Commercial Times, new LTA prices in 2027 could rise 15%–25% for 12-inch epitaxial (epi) wafers and more than 40% for polished wafers.
The increases could be even steeper for some second-tier customers, potentially topping 50%, Commercial Times notes. Adding to suppliers’ pricing power, analysts cited by the report expect 12-inch wafer spot prices to surpass existing LTA levels as early as the fourth quarter, providing a stronger benchmark for 2027 contract renegotiations. The upward momentum could extend into 2028 as supply remains tight.
The timing also coincides with a new LTA renewal cycle. Star Market Daily notes that some wafer contracts signed during the pandemic are due to expire this year or next. With raw material, electricity and fab construction costs climbing sharply over the past two to three years, the industry now broadly expects renewed contracts to carry at least double-digit price hikes, the report adds.
The magnitude of increases, however, is likely to vary by product and customer: according to Commercial Times, epi wafers are expected to see relatively moderate gains, while polished wafers face much sharper increases, with the final LTA pricing ultimately shaped by product mix and customer profile.
As explained by Star Market Daily, demand for 12-inch wafers is primarily tied to advanced-node applications, spanning AI computing as well as smartphones and PCs, while 8- and 6-inch wafers are used mainly for automotive and industrial power semiconductors.
AI, CoWoS Expansion Emerges as Key Wafer Demand Driver
As Wccftech notes, epitaxial wafers, which feature a single-crystal silicon layer grown on the wafer surface, are particularly important to advanced AI chips and are widely used by leading foundries such as TSMC.
Against this backdrop, Commercial Times points to AI infrastructure expansion as a major demand catalyst. Citing analysts, the report projects total CoWoS capacity to surge 70.9% YoY in 2027, alongside a 44.9% increase in GPU and AI ASIC shipments. Combined CPU shipments from Intel, AMD and NVIDIA are also expected to climb 36%, translating into higher 12-inch wafer starts and silicon interposer demand, Commercial Times adds.
As noted by Wccftech, the global silicon wafer supply chain is concentrated largely in Asia and Germany, with GlobalWafers and SUMCO among the major suppliers.
With both pricing and shipments on the rise, GlobalWafers could be a major beneficiary of the upcycle. Commercial Times expects its 12-inch wafer ASP to jump 32.6% YoY from $92 in 2026 to $122 in 2027, before climbing another 36.9% to $166 in 2028.
Still, rising prices may not be enough to trigger another wave of capacity expansion. BigGo Finance, citing SUMCO President Jiro Tatsuta in August, notes that wafer prices would need to climb much further to justify fresh investment, with Tatsuta warning that a 5%–10% hike would fall far short of covering costs. He also remained cautious on renewing LTAs amid uncertainty over demand sustainability and inflation, while ruling out any near-term return to greenfield expansion.
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(Photo credit: TSMC)
