30-Year Mortgage Rate Hits 6.58%, Highest in Nearly a Year, as Iran War Pushes Oil and Treasury Yields Up

Three weeks up, and counting

The average 30-year fixed mortgage rate rose to 6.58% this week, up from 6.55% the week before, according to Freddie Mac. That's the highest reading in nearly 12 months, and it's the third straight weekly increase. A year ago the rate stood at 6.74%, so borrowers still have it slightly better than 2025. That's cold comfort if you're trying to close on a house right now.

The 15-year fixed rate, the one refinancers watch, climbed too. It's now 5.96%, up from 5.93% last week, and higher than the 5.87% recorded a year ago.

You have to go back to August 21 to find a 30-year rate this high, according to Freddie Mac data. As recently as late February, the average rate had dipped just below 6% for the first time since late 2022. That window is closed.

The Iran war is the connective tissue

Mortgage rates track the 10-year Treasury yield, which lenders use to price home loans. The 10-year yield sat at 4.7% at midday Thursday, up from 4.57% a week earlier, and a long way from the 3.97% level recorded in late February, before the Iran conflict broke out.

Why the jump? Oil. The war has driven crude prices sharply higher, and that's feeding inflation expectations. Investors demanding more yield to hold long-term bonds is a direct response to fear that inflation is heating back up. That fear is legitimate: inflation had been cooling by more than economists expected, and now that progress is at risk of reversing.

A reasonable skeptic could ask whether the Fed itself, not the war, is the bigger variable here. Fair point. The Fed doesn't set mortgage rates directly, but its rate decisions shape how bond investors price risk, and rising oil-driven inflation raises the odds the central bank holds rates higher for longer, or hikes again. Geopolitics is the trigger, and monetary policy is the transmission belt.

What this does to actual homebuyers

Higher rates aren't an abstraction. A jump from 6.55% to 6.58% sounds small, but stacked onto a typical mortgage it adds real monthly dollars, and that erodes purchasing power fast. Buyers get priced out of homes they could afford a few months ago, and some just walk away from the search entirely.

That's already showing up in the sales data. Seasonally adjusted sales of previously occupied U.S. homes were up just 0.7% from January through June compared to the same stretch last year. That's basically flat. And the pace, hovering near 4 million annualized units, remains far below the historic norm of roughly 5.2 million.

This isn't a new problem. The slump traces back to 2022, when rates first climbed off pandemic-era lows and never fully came back down. Last year sales were stuck at a 30-year low. This year's modest uptick isn't a recovery, it's a plateau at the bottom.

Two very different economic stories, same root cause

There's a case to be made that rate volatility this year reflects the market doing exactly what it should: adjusting quickly to a real geopolitical shock rather than ignoring it. Bond investors pricing in inflation risk from an active war is arguably the system working, not failing.

The counterargument, and it's the one homebuyers actually feel, is that ordinary families are absorbing the cost of a foreign war through their mortgage rate regardless of their own financial situation or creditworthiness. Nobody voted on that transmission mechanism. It's just how bond markets work, and it lands hardest on first-time buyers with the thinnest margins.

Rates are still below where they sat a year ago, and the housing market's core problem, inadequate supply and years of underbuilding, predates this year's oil spike by a wide margin.

The open question is how long the Iran conflict keeps oil prices elevated, because that's the single biggest lever on where the 10-year yield, and therefore mortgage rates, goes next. Freddie Mac updates its rate survey weekly. The next reading will show whether this is a fourth straight week of increases or the start of a plateau.