When the 30-year fixed rate pushes toward 7%, something shifts in buyer behavior. People stop waiting. They start adapting — and sometimes that means taking on more risk than they’d planned.
Adjustable-rate mortgages (ARMs) are making a serious comeback. So are interest-only loans, assumable mortgages, and seller-financed deals. If you’re buying in the Phoenix metro right now, you’re probably hearing about at least one of these from your lender or your Realtor. And if you’re not, you should be — because your competition almost certainly is.
The ARM Revival Is Real, and the Numbers Show It
As of recent market data, the ARM share of weekly mortgage applications has climbed to roughly 8% nationally — up sharply from the low single digits during the sub-3% rate era of 2021. That might not sound massive, but consider the context: a few years ago, ARMs were so rare they barely registered. Now they’re back at levels we haven’t seen since the mid-2010s.
In high-cost markets and fast-moving metros like Phoenix, that share is likely even higher. Buyers here are stretching harder than the national average. Median home prices in the greater Phoenix area have held stubbornly above $400,000 even as demand softened, and when you’re financing $380,000 or more, shaving 50 to 75 basis points off your starting rate with a 5/1 or 7/1 ARM isn’t a small thing — it’s hundreds of dollars a month.
For more on the mechanics of why ARMs are drawing buyers back in, the rise of adjustable-rate mortgages and what makes them enticing breaks it down in detail worth reading before you sign anything.
What “Riskier” Actually Means in Today’s Market
Let’s be precise here, because “riskier” covers a wide range of products.
ARM structures currently in use:
- 5/1 ARM — fixed for 5 years, then adjusts annually. Most popular with buyers who expect to sell or refinance within that window.
- 7/1 ARM — fixed for 7 years, slightly higher initial rate than a 5/1 but more breathing room.
- 10/1 ARM — barely riskier than a fixed at this point, but still lower initial rate than a 30-year fixed.
- Interest-only ARMs — payment covers only interest for a set period. Lower monthly cost upfront, but zero equity built until the amortization period kicks in.
The key risk isn’t the initial rate. It’s what happens when the loan adjusts. If rates are still elevated in five years, a 5/1 ARM borrower could see their payment jump significantly depending on the index and caps written into the loan. Most loans today do carry lifetime and periodic caps, typically 5% over the initial rate over the life of the loan and 2% per adjustment — but that still matters at scale.
How Phoenix Buyers Are Using These Products
Here’s what I’m seeing on the ground in the Phoenix market. Buyers in the $350,000–$500,000 range in suburbs like Gilbert, Chandler, and Surprise are using 7/1 ARMs to qualify for homes they couldn’t touch at the 30-year fixed rate. Their logic: they don’t intend to keep the loan seven years. They’ll either move up, pay it down, or refinance if rates drop.
That reasoning isn’t unreasonable — it just depends on assumptions holding up. If life changes (job loss, family growth, a market correction that traps them in the home), the exit isn’t as clean as it looked at signing.
There’s also an uptick in buyers pursuing assumable mortgages — taking over a seller’s existing FHA or VA loan at the original rate. A seller sitting on a 3.25% FHA loan can pass that obligation to a qualified buyer, and in today’s rate environment, that’s a genuine competitive edge. The catch is the down payment: if the home has appreciated significantly, the buyer has to cover the gap between the assumed loan balance and the purchase price in cash or secondary financing. Not everyone can swing that.
Affordability pressure is real across the board right now, and it’s pushing buyers into corners they wouldn’t have touched three years ago. You can see how mortgage applications have fallen as the 30-year rate hits 6.76% — that context matters when you’re trying to understand why alternative products are gaining traction.
What You Need to Watch Before Going the ARM Route
The math can work. But there are things to verify before you commit.
| Question | Why It Matters |
|---|---|
| What’s the initial adjustment cap? | Limits the first-year rate jump after fixed period ends |
| What index does the ARM follow? | SOFR-based ARMs behave differently than older LIBOR products |
| What’s the lifetime cap? | Sets the maximum rate you could ever pay |
| How long do you realistically own this home? | Determines whether the ARM window gives you enough runway |
| Can you absorb the fully-adjusted payment? | The stress test that often gets skipped |
That last one is where buyers get into trouble. Run the numbers on the fully-adjusted payment — not just the teaser rate — before you close. If you can’t handle that worst-case scenario, the product isn’t right for you, regardless of what the initial monthly payment looks like.
One more thing worth flagging: some buyers are so focused on the rate that they miss other elements of the loan package. Lender switching is more common than people realize when buyers feel the terms aren’t competitive, and 1 in 3 homebuyers say they will drop their mortgage lender over specific friction points in the process — another reason to shop your product carefully, not just your rate.
What Smart Buyers Do Now
The shift toward riskier mortgage products isn’t a red flag by itself. ARMs have a legitimate place in the toolkit, especially for buyers with shorter time horizons or strong income trajectories. The danger is using them as a workaround to afford too much house — justifying an overstretched purchase by telling yourself rates will drop before the adjustment hits.
My advice to Phoenix buyers right now is simple:
- If you’re confident you’ll move or refinance within five to seven years, a 7/1 ARM at a lower rate is worth a conversation with your lender.
- If you’re buying a forever home in Chandler or Gilbert and want predictability, the peace of mind from a 30-year fixed has real value even at today’s rates.
- Don’t let the monthly payment be your only filter. Stress-test the loan at its adjusted rate and make sure you can still sleep at night.
The buyers who get burned aren’t the ones who chose an ARM. They’re the ones who chose an ARM without understanding what they were betting on.