ARM Mortgage Calculator
See your initial payments and model the worst-case scenario with our free ARM mortgage calculator when your rate adjusts.
Input Details
Maximum rate increase at first adjustment
Results
Initial Payment
Years 1 - 5
$2,271.16
at 5.5% fixed
Worst-Case Adjustment
Year 6
$2,733.10
at 7.5% (max cap)
Payment Adjustment Timeline
Payment Shock Warning
If rates rise significantly, your payment could jump by $462 per month in year 6. Ensure you can afford the fully indexed rate, not just the initial teaser rate.
Using the ARM Mortgage Calculator
Our ARM mortgage calculator is an essential tool for understanding the risks and rewards of adjustable-rate mortgages. Unlike fixed-rate loans, an ARM mortgage calculator helps you prepare for future rate adjustments that could significantly increase your monthly payment.
Adjustable Rate Mortgage Calculator Scenarios
When using an adjustable rate mortgage calculator, you can model different scenarios based on common ARM structures like the 5/1 or 7/1 ARM. This means your rate is fixed for the first 5 or 7 years and then adjusts annually. Our tool shows you the "teaser" rate vs. the potential fully indexed rate.
ARM Mortgage Calculator with Rate Caps
A critical part of any ARM mortgage calculator is the adjustment cap. Most ARMs have limits on how much the rate can increase in a single year and over the life of the loan. We help you calculate the "worst-case" payment so you can ensure you're financially prepared for any market shifts.