30-Year Mortgage Rate Hits 6.85%, Highest Since June 2025, as War-Driven Oil Spike Pushes Up Treasury Yields

The average rate on a 30-year fixed mortgage rose 6 basis points to 6.85% in the week ended September 4, according to Mortgage Bankers Association data released Wednesday. That's the highest reading since June 2025, per Reuters reporting carried by WTAQ.

The cause isn't a mystery. Reuters reports that escalating hostilities in the Middle East have driven up oil prices, fueling inflation concerns and pushing up the Treasury yields that mortgage rates track. The Mortgage Reports noted oil climbed past $92 a barrel as of September 7, adding pressure to borrowing costs.

The 10-year Treasury yield approached 4.8% on Tuesday, near its highest level since October 2023, according to Reuters. Reuters also points to a federal debt that topped $40 trillion in August and competition for capital from companies building AI infrastructure as additional forces pushing yields, and therefore mortgage rates, higher.

The war's economic fingerprints

Fortune and Rolling Out both lay out the same timeline. Rates were drifting toward 6.5% by the end of February 2026. Then the Trump administration launched Operation Epic Fury against Iran at the end of that month, and gas prices spiked along with broader economic uncertainty. Mortgage rates climbed almost immediately, according to Rolling Out.

A ceasefire in June 2026 briefly suggested relief. When that ceasefire appeared to collapse in July, rates ticked back up. They've stayed elevated since, according to both Fortune and Rolling Out.

A war launched by this White House is a documented driver of the mortgage costs now squeezing American homebuyers. Facts are facts regardless of who's in office.

Applications drop, ARMs gain ground

Higher rates are already changing borrower behavior. Total mortgage applications fell 2.7% from the prior week, the MBA said. Refinance applications dropped 6.2% week over week and now sit 25% below year-ago levels, a pace Quartz says hasn't been seen since May 2025.

Purchase applications barely moved, down just 0.2% week over week, though they remain 4% ahead of last year, according to Quartz. "Higher mortgage rates continue to weigh on prospective homebuyers looking to act, even as housing inventory has increased in many markets," said Joel Kan, MBA's vice president and deputy chief economist.

Borrowers priced out of fixed rates are increasingly gambling on adjustable-rate mortgages. ARMs made up 8.5% of applications last week, the highest share since June, up from 8% the week before, per MBA data cited by Quartz. That's still a fraction of the roughly 3% ARM share during the pandemic's lowest-rate years, but the trend is climbing.

Why the numbers don't all match

Readers scanning multiple rate trackers on the same day will see different figures, and that's not an error. Freddie Mac's survey put the 30-year average at 6.71% as of September 3, also its highest since June 2025. Zillow's daily lender marketplace showed 6.73% on September 9. Mortgage Research Center, cited by Fortune, put the refinance rate at 6.839%. The Mortgage Reports' own partner network showed 6.905% on September 7. Each survey samples different lenders, loan sizes, and days, so the numbers move in the same direction without landing on identical figures. The MBA's 6.85% figure, tied specifically to the week ended September 4 and corroborated separately by Reuters, Bloomberg, and Quartz, is the most widely confirmed number.

What's actually at stake for the Fed

August nonfarm payrolls came in at 162,000, far above the roughly 53,000 consensus, a strong number that reduces the case for cutting rates. Unemployment held at 4.1%. The latest PCE inflation reading, from July, showed headline prices up 3.7% year over year and core inflation at 3.3%, both well above the Fed's 2% target.

Reuters reports that traders are now betting a Fed rate hike is more likely than a hold when the Federal Open Market Committee, under Chair Kevin Warsh, meets September 15-16. President Trump has repeatedly called for a rate cut, but Reuters states plainly there's no indication the Fed will deliver one.

That sets up a real tension. Homeowners locked into pre-2026 low rates, 82.8% of whom had rates under 6% as of the most recent Redfin data cited by Fortune, have every reason to want borrowing costs down so they can move without giving up a cheap mortgage. But with inflation still running well above target and oil prices climbing on an active war, cutting rates now risks reigniting the inflation the Fed has spent years trying to tame. Both concerns are legitimate. The Fed hasn't sided with either yet.

Producer price data lands Thursday and consumer price data Friday, according to Reuters. Those two reports will be the last major inputs before Warsh's committee votes next week on whether current rates hold, rise, or fall.