ARM Mortgage Calculator
Calculate adjustable rate mortgage payments and understand how rates change over time. Estimate payments for 5/1, 7/1, and 10/1 ARM mortgages.
ARM Mortgage Calculator
Estimate your adjustable rate mortgage payments and understand rate adjustments
The full ARM mortgage calculator is available on our main calculator page
Go to Main CalculatorARM Types
- 3/1 ARM: Fixed 3 years, then adjusts annually
- 5/1 ARM: Fixed 5 years, then adjusts annually
- 7/1 ARM: Fixed 7 years, then adjusts annually
- 10/1 ARM: Fixed 10 years, then adjusts annually
ARM Benefits
- Lower initial interest rates
- Lower monthly payments initially
- Rate cap protection
- Good for short-term ownership
ARM Rate Caps
Understanding rate adjustment limits for adjustable rate mortgages
Initial Adjustment Cap
Limits the rate increase at the first adjustment (typically 2-5%)
2-5% capPeriodic Adjustment Cap
Limits annual rate changes after initial adjustment (typically 2%)
1-2% capLifetime Cap
Maximum total rate increase over loan life (typically 5-6%)
5-6% capARM Rate Index
Common Indexes
ARM rates adjust based on a financial index plus a margin
Secured Overnight Financing Rate (SOFR)Most Common
Cost of Funds Index (COFI)Common
Prime RateUsed by Banks
Calculate Your ARM Mortgage
Use our mortgage calculator to estimate your adjustable rate mortgage payments.
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