Mortgage rates punch back above 7% as war worries and inflation fears bite

The jump in mortgage rates

After five straight weekly increases, the typical 30-year fixed mortgage averaged 7.03% on Sept. 24. That level lifted rates above 7% again, a threshold last seen in January 2025, adding fresh strain to a housing market that was already wobbly. From the conflict's late February start through Sept. 24, mortgage costs climbed 1.05 percentage points, tracking a similar upswing in longer-dated Treasury yields. Over that stretch, the 10-year Treasury yield rose about 1.3 percentage points.

Why Treasuries and the Fed matter

Lenders anchor 30-year fixed mortgages to the 10-year Treasury yield, which reflects what investors expect for inflation, interest rates, government borrowing, and growth over time. If markets think the Federal Reserve will keep short-term rates higher for longer, investors usually want more return to tie up money for a decade. When a 10-year does not pay enough, demand falls, its price declines, and the yield rises. Inflation expectations also push yields up, since higher prices erode what a bond's fixed payments are worth.

The Iran conflict, energy costs, and Fed policy

Part of the rate spike stems from a Treasury selloff on fears a prolonged war with Iran could lift inflation and keep the Fed's benchmark rate elevated. You can see the pressure at the pump: US retail diesel prices hit $6.50 a gallon on Sept. 20 for the first time ever, and average gasoline prices have held above $4 nationwide since mid-July. Following the Fed's September meeting, at which it raised rates, the 10-year yield climbed above 5%, a height not seen in nearly twenty years as investors prepared for additional hikes. Still, higher policy rates don't always lift long yields; if tighter policy cools growth sufficiently, investors can come to anticipate easing inflation and eventual rate cuts, which can drag long yields down.

Housing market effects and buyer affordability

Sticker shock is stacking up. According to Redfin, US home prices were up 3.7% in August versus a year earlier, the quickest increase of the last 12 months. With borrowing costs elevated on top of that, demand is fading: over the past six months, existing-home sales declined in three of them, and as of Sept. 13, Redfin reports pending home sales were down 3.5% from the prior week, touching the lowest level in almost three years.

Wage gains have outpaced home-price growth by some measures this year, but higher rates are outweighing that tailwind. "The higher mortgage rate has essentially neutered the positive influence of faster income gains," according to Lawrence Yun, the National Association of Realtors' chief economist. One reason mortgages track the 10-year: lenders use it to price long-term risk, and most homeowners refinance or pay off closer to a decade than 30 years, Yun noted.

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What this means for your money

Mortgage costs are moving with the bond market's read on inflation and Fed policy, and right now the Iran conflict and pricier energy are feeding those expectations. Some economists warn the Fed's September hike could cool the labor market further after slower readings in June and July, even with August coming in stronger than forecast. For household budgets, that setup points to a housing market that stays tough as financing remains expensive and prices firm up. Keep an eye on the 10-year yield - it is the lever that is quietly steering mortgage quotes and other rate sensitive corners of the economy.

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