Three Consecutive Weekly Rate Rises — The Quick Read: the 30-year fixed has climbed for four straight weeks, hitting 7.03% for the week of September 24, 2026, according to Freddie Mac’s survey. That’s the sharpest one-month move of the year. Both Fannie Mae and the MBA cut their 2026 origination forecasts in response, which tells me the agencies no longer expect rate relief on the timeline markets had priced in. As of September 25, 2026, this is where things stand.
What Changed
The 30-year fixed rate has now risen every week since late August, and the pace picked up fast. Freddie Mac’s weekly survey put the average at 6.71% for the week of September 3, then 6.76% the week of September 10, then 6.95% the week of September 17, then 7.03% as of September 24, 2026. Stack those together and you get a 32 basis-point climb in one month. A year earlier, the same survey read 6.30%.
The jump between September 10 and September 17 stands out. Nineteen basis points in a single week is the largest weekly move since October 2024. Fifteen-year rates moved in the same direction, averaging 6.42% that week, up from 6.26%.
None of this happened in a vacuum. On September 16, 2026, the Federal Reserve’s FOMC raised the federal funds rate a quarter point, to a target range of 3.75% to 4.00%. That’s the first hike since mid-2023, following a stretch of cuts from late 2024 through late 2025 and a full year of holding steady in 2026. The Fed’s statement described elevated inflation and solid economic activity — the combination that pushes a central bank toward tightening, not easing.
Here’s the term-of-art part: the federal funds rate is what banks charge each other overnight, and it doesn’t set mortgage rates directly. But it shapes expectations for inflation and Treasury yields, and those two things move mortgage pricing. The 10-year Treasury yield, which mortgage rates track loosely, moved above 5% right after the Fed’s decision — CNBC reported it at 5.016% on September 16. By late September the yield was holding near its highest level since 2007.
Applications reacted fast. A published survey for the week ending September 11 showed total application volume down 4.1%, with refinance applications down 9% from the week before and 65% lower than the same week a year earlier. Purchase applications slipped too, down 1% on a seasonally adjusted basis. MBA’s Joel Kan noted the 30-year rate in that survey hit 6.97%, its highest since May 2025, as the 10-year Treasury pushed toward 5%. Every figure here varies by lender and program — guidelines, property type, leverage, and credit profile all apply.
Key Takeaways
- The 30-year fixed rose four straight weeks in September, climbing from 6.71% to 7.03% per Freddie Mac.
- The Fed hiked rates on September 16 for the first time since mid-2023, citing elevated inflation.
- The MBA and Fannie Mae both cut 2026 origination forecasts this month, with refinance volume taking the deeper cut.
- Refinance applications are down 65% year-over-year; purchase demand has softened but held up better.
- Existing-home sales fell below 4 million units in August for the first time since June 2025. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
What It Means for Real Estate Investors
Rising rates hit conventional purchase and refinance borrowers hardest, but the DSCR investor segment doesn’t run on the same clock. Investment property loans that qualify primarily on a property’s rental income — rather than the borrower’s personal income documentation — are priced against rent coverage, not a race to beat next week’s rate print. You can read how that qualification approach works on our DSCR loans guide.
That distinction matters more this month than most. Non-QM origination, most of it DSCR and investor product, has been growing independent of the broader rate-relief narrative. A major bank’s research arm projects non-QM originations climbing toward $175 billion in 2026, up from $108 billion in 2025 — a bank forecast, not a government count, and worth treating as an estimate rather than a settled figure. DSCR and investor loans now make up roughly half of that non-QM collateral pool.
Why does that matter when rates are climbing? Because an investor evaluating a rental purchase is running the math on rent against debt service, not chasing an affordability threshold tied to their own paycheck. A rate move still affects that math — it always does — but it doesn’t disqualify the deal the way a rising rate can disqualify a conventional buyer whose debt-to-income ratio was already tight.
The forecast cuts tell a parallel story. The MBA’s September forecast for 2026 origination volume came in at $2.123 trillion, down from $2.147 trillion projected a month earlier. Fannie Mae’s own September number landed close behind, at $2.121 trillion, down from $2.168 trillion in August. Both institutions cut refinance volume more sharply than purchase volume. MBA now expects full-year refinance production near $700 billion, down from $713 billion in August and $747 billion in July — a decline of nearly 8% from the $760 billion the MBA projected back in January.
That pattern — purchase holding up better than refinance — lines up with what the application data already shows. Refinance demand collapses when rates rise, because the borrower who refinances only does it when the new rate beats the old one by enough to matter. Purchase demand is stickier. People still need to move, still need to buy, even when the rate is worse than it was a year ago.
Existing Sales Are Already Showing the Strain
Home sales dipped below a threshold that hadn’t been breached since mid-2025, and the timing predates the sharpest weeks of this rate move. NAR’s report for August 2026 showed existing-home sales at a seasonally adjusted annual rate of 3.98 million, down 2.0% from July and down 1.2% from a year earlier. Inventory rose to 1.62 million units, a 4.9-month supply — the highest in over a decade.
That’s a softer market forming even before September’s rate acceleration hit full force. The last time sales fell below 4 million was June 2025. NAR’s chief economist pointed to a silver lining underneath the headline: existing home sales are actually up 1.6% year-to-date through August, supported by wage growth of 3.1% in August and 643,000 net new jobs added since the start of the year.
So the picture isn’t uniformly bad. Prices are rising. Wages are rising. But the August reading came in before the worst of the rate climb showed up in the data, which means September and October numbers are the real test of whether this segment holds.
Is the Fed’s Own Forecast Believable?
Not fully, and even the forecasters admit it. Fannie Mae’s Economic and Strategic Research Group still expects the 30-year to end 2026 near 6.8%, improving to roughly 6.7% by the first quarter of 2027. But that assumption is already stale — current rates are pricing above 7%, higher than either Fannie or the MBA had built into their models. One analyst flagged the gap directly, noting that 30-year rates are pricing well above what the GSE forecast called for.
The Fed’s own dot plot doesn’t help the optimistic case either. Sixteen of eighteen FOMC participants expect at least one more rate hike before year-end, and four expect two. The median participant now sees the fed funds rate ending 2026 at 4.1%. Markets currently price roughly a 66-67% probability of another quarter-point hike at the October meeting. If that lands, upward pressure on mortgage rates likely extends into the fourth quarter — right as the seasonal home-buying slowdown typically sets in.
Not every forecaster agrees on where this settles. One research shop revised its baseline after the Fed meeting to project two more hikes through 2027 and a flatter yield curve, putting the 10-year Treasury near 4.75% through year-end 2026 and into 2027 — a call that would likely keep mortgage rates closer to 6.5%. That’s a meaningfully more optimistic read than what the MBA or current spot pricing suggests. Forecasters are not aligned right now, and that disagreement itself is a signal worth noting.
My Take
The most important number in this whole update isn’t the rate. It’s the forecast cut. When both Fannie Mae and the MBA trim their origination outlooks in the same month, in the same direction, that’s not noise — it’s the industry’s own modelers admitting the relief they’d priced in for late 2026 isn’t showing up on schedule.
I think the refinance-versus-purchase split in those forecast cuts is the part investors should sit with longest. MBA cut refinance volume expectations far harder than purchase volume. That’s not a coincidence. It reflects a market view that purchase demand — driven by life events, job changes, family growth — is more durable than refinance demand, which is purely rate-opportunistic. If you’re an investor evaluating whether to move on a deal now versus wait for a better rate environment, that split is useful information. The purchase market isn’t collapsing. It’s slowing, at a rate that still allows deals to get done.
What I’d Do Now
If you’re weighing a purchase or considering how a rental property pencils out at current pricing, the practical move is to separate the rate conversation from the qualification conversation. A rate you can’t control still moving against you doesn’t change whether a property’s rent covers its debt service — that’s a property-level question, not a market-timing one. You can review how different loan structures fit different borrower situations through Lendmire’s loan options page, which carries the current program details.
For anyone weighing a rate lock decision this fall: a lock fixes your rate for a set window while your loan is in process; floating means your rate can still move, up or down, until you lock it. Given the pattern this month — four straight weekly increases — the case for locking once you have a rate you find workable is stronger than the case for floating and hoping for a pullback. That’s a mechanics point, not a prediction.
If you’re weighing a purchase or a refinance this fall, Lendmire can walk you through how the current loan options fit your file — no promises on where rates head next, just a clear look at what’s available.
Frequently Asked Questions
Why did mortgage rates rise for three, then four, straight weeks in September 2026?
The main driver was the Federal Reserve’s rate hike on September 16, the first since mid-2023, paired with elevated inflation readings. That pushed Treasury yields higher, and mortgage rates followed. Freddie Mac’s survey shows the climb accelerating from 6.71% in early September to 7.03% by September 24.
Does a Fed rate hike always mean mortgage rates go up?
Not mechanically, but this cycle they moved together. The Fed funds rate and mortgage rates aren’t the same number — the Fed sets an overnight bank lending rate, while mortgage rates track longer-term Treasury yields and investor expectations. This month, both moved higher at the same time.
Why did refinance applications drop so much more than purchase applications?
Refinance demand is opportunity-driven — borrowers refinance only when the new rate clears their existing one by enough to justify the switch. When rates rise, that opportunity disappears fast, which is why the MBA’s data shows refinance applications down 65% year-over-year while purchase demand softened by a smaller margin. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
Does rising rates mean DSCR or investor loans are a bad idea right now?
Not necessarily. DSCR loans qualify primarily on a property’s rental income rather than a personal debt-to-income ratio, so the qualification math isn’t tied to the same affordability threshold that squeezes conventional buyers. Whether a specific deal works still depends on the property’s rent, price and the loan terms available, subject to lender guidelines.
Should I lock my rate now or wait to see if rates come down?
That depends on your timeline and risk tolerance, not a market prediction. Given four consecutive weekly increases through late September, waiting carries real downside if the trend continues. A loan officer can walk through the lock mechanics for your specific file and timeline.
About Lendmire
Lendmire — NMLS# 2371349 — is a mortgage brokerage whose founder writes this column. DSCR investor programs reach 41 markets, including Washington, D.C.; consumer programs such as bank statement, HELOC and down payment assistance loans are arranged in 16 states; every loan is placed with, and underwritten by, a wholesale lender under that lender’s guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
2. Federal Reserve FOMC statement, September 16, 2026
3. NAR Existing-Home Sales report, August 2026
This article is part of Lendmire’s Mortgage News series — every loan program’s qualification details, guidelines, and scenarios live on the loan options page.
Related reading: VA Loan Benefits Are Real — But September’s Rate Jump Changes The Math · The Fed Hiked Again — DSCR Investors Should Rethink Q4 · Record Home Equity Meets Rising Rates — HELOCs Fill The Gap
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosures. The information presented in this article is general market commentary, not financial, legal, or tax advice. Lendmire is a mortgage brokerage (NMLS# 2371349) — not a direct lender or depository institution — and loan placement is subject to lender underwriting. Nothing in this content represents a commitment to lend. Loan terms, pricing, and program availability vary based on borrower qualifications, property characteristics, and state of subject property, and are subject to change at any time. Lendmire complies with Equal Housing Opportunity requirements. Consumer access: nmlsconsumeraccess.org.