The 10-year U.S. Treasury yield rose to 4.798% on September 2, hitting its highest level since November 2023 and threatening to push borrowing costs higher for Miami homebuyers already contending with elevated prices and limited inventory.

Global bond markets have been selling off as investors fear a prolonged war with Iran could drive inflation higher, potentially prompting the Federal Reserve to raise interest rates. The odds of a quarter-point hike at the Fed’s September 16 meeting stood at 64% as of Wednesday, according to market data.

Wealth advisor Mark White told the New York Post that higher yields reward savers but penalize borrowers, and households preparing to buy a home, finance a car or carry revolving debt are likely to feel the impact most.

Mortgage rates are closely tied to the 10-year Treasury yield. The 30-year fixed mortgage rate was 6.66% as of last Friday, according to Freddie Mac. Miami’s housing market, which has seen strong sales in recent months, could face headwinds if rates climb further.

Melissa Cohn, regional vice president of William Raveis Mortgage, said higher yields will trickle down to the greater economy and have a negative impact. A slow housing market typically means consumers buy less furniture and hire fewer contractors, effects that ripple through the local economy.

For Miami-Dade County, where home sales were notably strong in June, rising mortgage rates could dampen the momentum. First-time buyers are particularly vulnerable, as even a modest rate increase can add hundreds of dollars to monthly payments and reduce purchasing power.

The rental market is also at risk. Higher yields make it more expensive for developers to finance new construction, keeping supply insufficient to meet demand in a region where population growth has consistently outpaced housing development.

Auto loans, tied to the 5-year Treasury yield which hit 4.55%, are also getting more expensive. With national gasoline prices above $4 a gallon and vehicle insurance costs climbing, South Florida consumers face pressure on multiple fronts.

Inflation remained at 3.4% in July, well above the Fed’s 2% target. Fed Chair Kevin Warsh said at Jackson Hole that current policy may not be restrictive and there may be work to do on inflation, signaling a potential rate hike ahead.

Sources: NY Post, WPLG Local 10