The average rate on a U.S. 30-year fixed mortgage climbed to 6.69% for the week ending August 6, up from 6.66% the week before, according to Freddie Mac's Primary Mortgage Market Survey. It's the fifth consecutive weekly increase and the highest level the benchmark rate has touched since July 2025, extending a run of higher borrowing costs that has been building since late February.
That timing is not a coincidence. Mortgage rates are up 71 basis points since the Iran war began in late February, tracking a broader rise in Treasury yields as investors have priced in persistent inflation risk tied to the conflict's effect on oil markets.
A Widening Affordability Gap
The rate move matters more than its size suggests because of how mortgage math compounds. On a $200,000, 30-year loan, a 6% rate costs a borrower $1,199 a month, versus $955 at 4% — a gap of roughly $250 a month, or nearly $3,000 a year, for the same loan amount. At 6.69%, that monthly burden is even higher, pricing an increasing share of would-be buyers out of the market even as Freddie Mac's own data shows listing prices modestly below year-ago levels and for-sale inventory improving from the tight conditions of recent years.
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The Fed's Bind
The 15-year fixed rate moved in the opposite direction, easing to 6.01% from 6.04%, a divergence that points to short-term rate-cut expectations even as long-term borrowing costs stay elevated on inflation concerns. That split leaves the Federal Reserve in an uncomfortable position heading into Wednesday's CPI print: cutting rates further could help affordability at the margin, but doing so while oil-driven inflation risk is rising, as seen in this week's crude rally, risks reinforcing the very price pressures keeping long-term yields — and mortgage rates — elevated.
For now, the housing market is adjusting on the supply side rather than the rate side, with sellers cutting list prices to compensate for buyers' shrinking purchasing power rather than waiting for relief from the Fed.
