Could mortgage rates hit 9%? 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

Could mortgage rates hit 9%? One economist lays out the scenario

The conversation mortgage professionals have been having for the better part of two years — when will the Federal Reserve cut rates, and by how much — may be the wrong question entirely.

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.

"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.

That pressure stems from structural forces that Fed policy cannot easily reverse: expanding fiscal deficits, rising term premiums, shifting global capital flows, and evolving investor appetite for US debt.

As those dynamics have taken hold, bond yields have pushed mortgage rates higher in ways that have surprised many in the industry, reinforcing Hepp's point about where brokers and their clients need to focus their attention.

What it would actually take to reach 9%

Hepp addressed the headline scenario — 9% mortgage rates — but was direct about what it would require.

"It's possible that mortgage rates go up to 9%, but it's really not our base case scenario," she said. "It's more of a severe scenario in which Treasuries go up to 6% or 7% and that would be really triggered by several major disruptions."

The 10-year Treasury yield fell to approximately 5.18%–5.21% in the morning after a surprisingly weak September jobs report, which showed the US economy added just 29,000 jobs, causing traders to rapidly reduce bets on a Fed rate hike in October.

By the afternoon, the yield had climbed back to 5.252%, up 0.018 from its previous close of 5.234%.

Builders gain ground as sellers hold back

That elevated rate environment continues to throttle existing home sales through the lock-in effect. High mortgage rates are forecast to keep the US housing market subdued through the remainder of 2026, with homeowners who secured pandemic-era rates well below 3% showing little incentive to list.

The cohort best positioned to capitalize is home builders, who have responded with aggressive incentive programs and rate buydown structures that give buyers a path to manageable monthly payments even at current levels.

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 — one shaped less by central bank policy than by how global investors assess the long-term credibility of US debt.

Stay updated with the freshest mortgage news. Get exclusive interviews, breaking news, and industry events in your inbox, and always be the first to know by subscribing to our FREE daily newsletter.