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Homebuyers Can Save Over $15,000 in Five Years With an Adjustable-Rate Mortgage–But It Comes With Risks

That’s the largest savings in dollar terms since at least 2015. Demand for adjustable-rate mortgages is on the rise as mortgage rates surge.

(NASDAQ: RDFN) — The typical homebuyer could save an estimated $15,582 over five years, or roughly $260 per month, by taking out an adjustable-rate mortgage rather than a 30-year-fixed-rate mortgage. That’s the largest savings in dollar terms for adjustable-rate mortgage holders since at least 2015, according to a new report from Redfin (, the technology-powered real estate brokerage.

Redfin’s analysis is based on estimated monthly mortgage payments on the median-asking-price home during the four weeks ending May 12 for 30-year fixed mortgages and 5/1 adjustable-rate mortgages (ARM). A 5/1 ARM is a loan in which the interest rate is fixed for the first five years and then adjusts once a year for the remainder of the loan term, which is typically 30 years. Borrowers can also choose ARMs in which the interest rate resets after seven years, 10 years and other durations, but Redfin’s analysis focuses on 5/1 ARMs—one of the most popular types.

The typical monthly payment for buyers who took out a 5/1 ARM was an estimated $2,164 during the four weeks ending May 12. That's roughly 11% ($260) lower than the $2,423 estimated typical payment for buyers who took out a 30-year fixed-rate mortgage.

Adjustable-rate mortgages often come with lower interest rates, and therefore lower monthly payments, because buyers only get to lock in their mortgage rate for a certain number of years. They’ve been rising in popularity as mortgage rates have surged at their fastest pace in decades. The average interest rate on a 5/1 ARM was 3.98% during the week ending May 12, while the average rate on a 30-year fixed mortgage was 5.3%—a spread of 1.32 percentage points. That’s just shy of the 1.36 percentage-point spread during the week ending April 21, which was the largest since 2014.

Adjustable-rate mortgages made up 10.8% of all mortgage applications during the week ending May 6. That’s up from 3.1% at the start of the year and the highest share since 2008, when a lack of regulation of ARMs helped contribute to the housing crash. Scores of borrowers were drawn to ARMs in the early 2000s due to their low initial “teaser rates” and option for a 0% down payment. That became problematic when rates reset higher and many buyers could no longer afford their monthly payments. Today, banks do more due diligence to check if buyers will be able to cover the increased costs when the loan resets. For example, Bay Equity Home Loans—Redfin’s mortgage company—requires a down payment of at least 5%, a minimum credit score of 620 and a debt-to-income ratio of no more than 50%. There are also caps on how much lenders can increase interest rates.

Still, ARMs are risky, as it’s challenging to predict where mortgage rates will be when the loan resets. If they’re significantly higher, it may be harder for borrowers to cover their monthly mortgage. For certain types of ARMs, borrowers may face fees or penalties if they refinance or pay off their loan early, Redfin Deputy Chief Economist Taylor Marr explained. If borrowers do consider refinancing, they should calculate whether the closing costs for the refinance negate the savings from the ARM, Marr said.

“Adjustable-rate mortgages can work really well for homebuyers who plan to stay in their home for less than 5 to 10 years and have the means to cover higher payments when the loan resets,” said Arnell Brady, a senior loan officer Bay Equity Home Loans.

Brady said that 20% to 30% of his clients are now asking about adjustable-rate mortgages, a significantly larger share than before the pandemic.

To view the full report, including charts and methodology, please visit:

About Redfin

Redfin ( is a technology-powered real estate company. We help people find a place to live with brokerage, instant home-buying (iBuying), rentals, lending, title insurance, and renovations services. We sell homes for more money and charge half the fee. We also run the country's #1 real-estate brokerage site. Our home-buying customers see homes first with on-demand tours, and our lending and title services help them close quickly. Customers selling a home can take an instant cash offer from Redfin or have our renovations crew fix up their home to sell for top dollar. Our rentals business empowers millions nationwide to find apartments and houses for rent. Since launching in 2006, we've saved customers more than $1 billion in commissions. We serve more than 100 markets across the U.S. and Canada and employ over 6,000 people.

For more information or to contact a local Redfin real estate agent, visit To learn about housing market trends and download data, visit the Redfin Data Center. To be added to Redfin's press release distribution list, email To view Redfin's press center, click here.


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