ARM Mortgages Explained: How Adjustable Rates Can Help You Get The Home You Want in a High-Rate Market
With mortgage rates rising home shoppers are turning to adjustable-rate mortgages to get the home they want now.
If you’ve been house hunting lately, you’ve probably felt the sting of today’s mortgage rates. With 30-year fixed rates hovering around 7%, monthly payments on even modest homes can feel out of reach. As a result, many of our clients are taking a second look at an option that fell out of favor during the era of ultra-low rates: the adjustable-rate mortgage, or ARM.
An ARM isn’t right for everyone, but for the right buyer it can be a smart way to lower monthly payments and get into a home sooner. Here’s what you need to know.
What Is an ARM?
An adjustable-rate mortgage is a home loan with an interest rate that can change over time. Unlike a fixed-rate mortgage, where your rate stays the same for the life of the loan, an ARM starts with a fixed introductory rate for a set period. After that, the rate adjusts periodically based on market conditions.
ARMs are usually described with two numbers, such as 5/6, 7/6, or 10/6. The first number is how many years your initial rate stays fixed. The second tells you how often the rate adjusts after that, in this case every six months.
Elevate is currently offering our clients a 5/1 ARM at 5.625% giving you five years of predictable payments, followed by adjustments once a year for the remainder of the loan. This is valid through October 31st, 2026. This offer is through Truity Credit Union, who will hold and service the loan with no pre-payment penalty or PMI.
How the Rate Adjusts
When your fixed period ends, your new rate is calculated using two components. The index is a benchmark interest rate that reflects broader market conditions; most ARMs today use SOFR (the Secured Overnight Financing Rate). The margin is a fixed percentage set by your lender that gets added to the index. If the index is 4% and your margin is 2.75%, your new rate would be 6.75%.
Importantly, ARMs come with rate caps that limit how much your rate can rise. A common cap structure is written as 2/1/5, meaning your rate can rise no more than 2 percentage points at the first adjustment, no more than 1 point at each adjustment after that, and no more than 5 points above your starting rate over the life of the loan. These caps give you a clear picture of your worst-case scenario before you ever sign.
Why ARMs Are Gaining Popularity Right Now
The biggest draw of an ARM is a lower introductory rate. Lenders typically price ARMs below comparable fixed-rate loans, and in a high-rate environment that difference can translate into real savings.
Let’s look at a hypothetical example on a $400,000 loan. At a 7% fixed rate, your monthly principal and interest payment would be about $2,661. If an ARM offered an introductory rate of 6%, that payment would drop to about $2,398, a savings of roughly $263 a month, or nearly $15,800 over the first five years. (Actual rate spreads vary by lender and market conditions, so be sure to compare current quotes.)
That lower payment can help home shoppers in several ways. It can make a monthly budget more comfortable, it may help you qualify for a larger loan or a home in a better location, and it frees up cash for savings, renovations, or other goals.
Who Benefits Most from an ARM?
ARMs tend to work best for buyers in a few specific situations.
Buyers who expect rates to come down. At Elevate Design + Build we see many of our clients today choosing an ARM with the hope of refinancing into a fixed-rate loan if rates fall. This strategy can work well, but it’s not guaranteed, since no one can predict future rates with certainty.
Buyers who plan to move within a few years. If you expect to relocate for work, upgrade as your family grows, or downsize before your fixed period ends, you may sell before your rate ever adjusts. In that case, you enjoy the lower rate without facing the risk.
The Risks to Understand
An ARM trades long-term certainty for short-term savings, so it’s essential to go in with your eyes open.
The main risk is payment shock. Returning to our example, if rates rise and your loan hits its first adjustment cap, your rate could jump from 6% to 8% after year five. On the remaining balance, your monthly payment would climb to roughly $2,873, about $475 more than you’d been paying. Under a 5-point lifetime cap, your rate could eventually reach as high as 11%.
It’s also worth remembering that refinancing depends on factors beyond interest rates. You’ll need to qualify based on your income, credit, and home equity at the time, and if home values in your area dip, refinancing could become more difficult. Finally, plans change. The buyer who expects to move in five years sometimes finds themselves staying for fifteen.
Questions to Ask Before Choosing an ARM
At Elevate Design + Build we encourage our clients to sit down with their lender and ask what the index and margin are, what the rate caps look like, and what your payment would be in the worst-case scenario. Then ask yourself honestly: could I comfortably afford that maximum payment if my plans to sell or refinance don’t work out? If the answer is yes, an ARM may be a powerful tool. If that number would strain your budget, a fixed-rate loan may offer valuable peace of mind.
The Bottom Line
As a local Kansas City homebuilder who works closely with our clients in a 6-7% mortgage rate environment, we see that adjustable-rate mortgages have opened doors that might otherwise stay closed. Lower initial payments can help you buy sooner, afford more home, or simply breathe easier each month. The key is understanding exactly how your loan works and having a plan for what happens when the fixed period ends.
We find that every buyer’s situation is different, so talk with a trusted loan officer or financial advisor to compare your options and find the mortgage that fits your goals.
This article is for educational purposes only and does not constitute financial advice. Rates and loan terms vary by lender and borrower qualifications.