Thousands of homeowners with adjustable-rate mortgages are approaching a point where their interest rate can change — and for many, that means their monthly bill could jump sharply. New data show a wide range of outcomes: some borrowers face several-hundred-dollar increases, while a smaller share may see their rate fall.
Unlike fixed-rate loans, adjustable-rate mortgages begin with a temporary, often lower interest rate that resets after a set period. When that reset happens, the adjusted rate is tied to market benchmarks and subject to built-in limits — a design that can blunt but not eliminate large payment swings.
How many mortgages are affected?
Marketwide figures underline that this is a targeted but meaningful issue. There are about 3.1 million outstanding ARMs, the highest total in roughly five and a half years, according to ICE. Roughly 2.05 million of those loans remain in their initial fixed period; about 1.05 million have moved into the adjustable phase and are already subject to periodic resets.
As a share of the U.S. mortgage market, ARMs represent around 5.6% of roughly 55.4 million active mortgages. Still, their concentration in certain vintages — and the fact that many took out loans when prevailing rates were much lower — is what creates risk for specific borrowers now.
- Volume: ~3.1 million outstanding ARMs (ICE).
- Share of total mortgages: about 5.6% of 55.4 million mortgages.
- Typical reset pattern: initial fixed term (often 3, 5, 7, or 10 years), then annual or semiannual adjustments.
- Rate limits: loans usually include adjustment caps — for example, a 2-point cap at first reset, 1 point at later resets and a lifetime cap around 5 points — which restrict how much the rate can move each time and overall.
What the data say about payment changes
ICE’s analysis provides concrete examples of who is most exposed. Homeowners with seven-year ARMs that originated in 2019 — and who are facing their first reset in the August–December window — started with a median rate near 3% and a median remaining balance of about $548,000.
Using current market rates and the loans’ contractual caps, those borrowers face a median adjusted rate near 6.06%, which ICE estimates would raise the typical monthly mortgage payment by roughly $1,080.
By contrast, some more recent ARM vintages are positioned differently. For example, three-year ARMs issued in 2023 show a median initial rate around 8.38% with a median remaining balance near $136,000; those loans are projected to see a modest median decline to about 7.71%, reducing monthly payments by roughly $124.
Choices and costs for homeowners
The Consumer Financial Protection Bureau requires lenders to send an initial notice 210–240 days before a borrower’s first payment at the adjusted rate. That preliminary notice shows what the change could look like under current conditions; a follow-up notice about 60–120 days before the new payment gives the actual rate and dollar amount.
When the reset arrives, homeowners typically have two main paths: accept the adjusted payment and remain in the loan, or seek to refinance into a different mortgage, usually a fixed-rate loan. Which option makes sense depends on each household’s finances, future plans and local rate availability.
Financial trade-offs matter. Refinancing brings closing costs that lenders and industry guidance generally estimate at roughly 2%–5% of the loan amount. On a $300,000 mortgage, that translates to about $6,000–$15,000 in upfront or rolled-in costs. Credit scores, income, debt levels and property value all influence whether a borrower can secure a competitive refinance rate.
Housing counseling is available for homeowners who feel they cannot manage a higher payment. The CFPB points borrowers toward Department of Housing and Urban Development-approved counselors who can explain negotiation options such as loan modifications or repayment plans.
Voices from the field
Laurie Goodman of the Urban Institute says borrowers who chose ARMs traded a lower initial rate for exposure to rising markets — a risk that, in many cases, has now materialized.
Kate Wood, a lending specialist, recommends that homeowners whose budgets would be stretched by a reset consider refinancing for predictability, even if the immediate savings are modest. But for borrowers who can absorb a higher payment and prefer to avoid refinancing costs, staying with the ARM can be a reasonable strategy.
Mortgage advisers say outcomes vary household by household. “Some borrowers are in a position to handle an increase because their incomes have improved; others won’t be able to,” said Duane Buziak of Coast2Coast Mortgage.
Practical steps for consumers
- Read any lender notices carefully and compare the new rate shown to current fixed-rate offers.
- Get an early estimate of refinance costs and factor the break-even time into your decision.
- Check credit reports and scores well before applying to refinance to improve your chances of a better rate.
- If you expect difficulty, contact a HUD-approved housing counselor for guidance on loan modification or other options.
For homeowners with upcoming ARM resets, timing is critical. Review lender communications, run scenarios for your monthly cash flow, and consult a trusted housing counselor or mortgage professional — an informed choice now can prevent an unpleasant surprise when the new payment arrives.
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Jordan Keller specializes in analyzing the US financial markets. With concrete recommendations, he helps you secure and boost your investments by providing strategies that adapt to market fluctuations.