Will Silicon Wafer Prices Rise in 2027?

UBS forecasts 12-inch wafer utilization climbing from 84% in 2026 to 91% in 2027 and 99% in 2028, and says silicon wafer prices could rise by more than 20% a year through that stretch — an upcycle it compares to 2017–2018. In short: prices are on track to move higher, not stabilize, across both 300 mm and 200 mm wafers.

What the UBS report found

The forecast comes from UBS’s Global I/O Silicon Wafers report, dated 18 September 2026 and authored by analyst Sunny Lin, as summarized by Futu News and TechFlow. UBS raised its 2026 demand growth forecast to 11% for both 12-inch and 8-inch wafers, up from 9% and 8%, and projects 12-inch demand growth of 14% in 2027 and 13% in 2028. TechFlow adds a 2029 utilization estimate of 103.7% for 12-inch wafers — past full capacity.

Demand is outrunning supply

Two forces are driving the upgrade, per UBS: customer inventories are back to healthy levels and restocking demand remains robust, and DRAM capacity expansion is adding 12-inch demand. Twelve-inch (300 mm) wafers serve mainly advanced logic and memory; eight-inch (200 mm) wafers serve mature-node, analog, and power devices, including EV power electronics. Both size classes are tightening together.

Why a 40–50% price increase is the bar for new capacity

Wafer makers are only now recovering from the 2023–2025 downturn, which left the group with a 12.3% operating margin and 6.8% return on equity. UBS says producers will only consider new capacity if prices rise 40% to 50% or more; industry feedback cited in the report puts that as the bar before new investment. Absent that increase, UBS warns of a severe shortage after 2028.

UBS utilization and price forecast, 2026–2028

The table below summarizes UBS’s utilization path by wafer size and year, alongside the pricing outlook for the same period.

Chinese capacity will not close the gap

UBS expects Chinese wafer makers’ impact on the global balance to stay limited through 2027–28. NSIG’s 12-inch average selling price is $54, versus an industry average of $100–$120, and non-Chinese customers face re-certification barriers for mature-node supply. UBS rates Shin-Etsu, GlobalWafers, and Siltronic Buy, and is Neutral on SUMCO.

What North American buyers should do now

Treat 2027 contract resets as a fixed deadline. Get quotes now, before pricing moves; split allocation between 300 mm and 200 mm and between prime and test/monitor grade rather than concentrating risk in one lane; and start qualifying a second source today, since re-qualification takes time a tight market will not leave later. Every lot should carry a Certificate of Analysis and documented SEMI M1 parameters — resistivity, orientation, thickness, TTV, particle counts. Buffer stock close to the fab matters more as the market tightens; Canadian buyers working with a Toronto-based distributor can draw on bonded local inventory rather than routing every order cross-border. See our wafer specifications guide, silicon wafer pricing reference, and prior coverage of the related InP substrate shortage.

Conclusion

UBS’s 18 September report points to a 2027–2028 upcycle built on rising utilization, restocking demand, and DRAM expansion, with wafer makers unwilling to add capacity below a 40–50% price increase. The window to lock in 2027 supply on favorable terms is closing as utilization climbs toward 91% next year and 99% the year after.

Sources: UBS Global I/O Silicon Wafers report (18 September 2026, analyst Sunny Lin), via Futu News (news.futunn.com, 18 September 2026) and TechFlow (techflowpost.com, 22 September 2026).