Cotality chief economist Selma Hepp told CNBC that the bond market, not the Fed, now drives mortgage pricing. A 9% 30-year mortgage is possible but would require large moves in Treasury yields and other major disruptions.
A 9% 30-year fixed rate is a severe scenario that would require 10-year Treasury yields to move toward 6%–7% alongside wider mortgage spreads.
Structural forces — expanding fiscal deficits, higher term premiums, shifting global capital flows and changing investor demand for U.S. debt — are pushing yields higher in ways the Fed can’t easily reverse.
High rates are keeping many homeowners off the market (the lock-in effect) while builders are using incentives and buydowns to attract buyers.
One economist lays out the scenario | Mortgage Professional CONTINUE TO SITE CONTINUE TO SITE Could mortgage rates hit 9%? "The most important story in the housing today is no longer [the] Fed," Hepp said. "It's really the bond market." The 30-year fixed mortgage rate reached 7.5% as Hepp spoke, a level that reflects the sustained pressure long-term Treasury yields have placed on home lending costs throughout this rate cycle.
Professionals across the industry have already been recalibrating their 2026 strategies around a higher-for-longer rate environment, and Hepp's framing adds urgency to that pivot. Waiting on a Fed pivot to unlock housing activity carries real risk if the bond market is operating on its own logic. "It's possible that mortgage rates go up to 9%, but it's really not our base case scenario," she said.
One economist lays out the scenario The bond market, not the Fed, now holds the key — and one chief economist just mapped exactly what breaks it By Liezel Once 02 Oct 2026 Share The conversation mortgage professionals have been having for the better part of two years. Selma Hepp, chief economist at Cotality, made that case directly during an appearance on CNBC 's "Squawk on the Street," arguing that the bond market has supplanted the Fed as the primary force determining what American borrowers pay at the closing table. Stay updated with the freshest mortgage news.
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