04/28/2026
What Is an Adjustable-Rate Mortgage?
Since a lot of people aren’t familiar with this type of loan, let’s start with a definition. This is how Business Insider explains the main difference between a fixed-rate mortgage and an adjustable-rate mortgage:
“With a fixed-rate mortgage, your interest rate remains the same for the entire time you have the loan. This keeps your monthly payment the same for years . . . adjustable-rate mortgages work differently. You’ll start off with the same rate for a few years, but after that, your rate can change periodically. This means that if average rates have gone up, your mortgage payment will increase. If they’ve gone down, your payment will decrease.”
Basically, one doesn’t change much over the life of your loan.
And one could change... either by a little, or a lot.
Of course, things like taxes or homeowner’s insurance can still have an impact on a fixed-rate loan, but the baseline of your mortgage payment is fairly steady. But the big difference is that with an ARM, your monthly payment could change over time.