10/1 ARM Mortgage Calculator
Result
10/1 ARM Mortgage Calculator A 10/1 ARM is an adjustable-rate mortgage with a fixed interest rate for the first 10 years that then adjusts once a year. This calculator estimates your monthly principal-and-interest payment during the fixed period and what — free online calculator.
Formula
- 10/1 ARM mortgage calculator. This page documents the calculator's stated model and gives an educational worked example.
- The main inputs are Home price, Down payment, Initial annual rate, Loan term, Rate after year 10. Enter them in the units and format shown in the calculator.
- Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: 10/1 ARM Mortgage
- Home price: 400000
- Down payment: 80000
- Initial annual rate: 5.5 %
- Loan term: 30 years
- Rate after year 10: 7 %
The calculator can compare the initial fixed-period payment with an illustrative payment after the first reset.
Sample result: Calculating…
Frequently asked questions
What does the 10/1 ARM Mortgage calculate?
Actual ARM payments depend on the loan index, margin, adjustment caps, floors, and future index values; the post-reset rate is an input, not a forecast.
Which values should I enter?
Enter Home price, Down payment, Initial annual rate, Loan term, Rate after year 10 using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Initial payment uses standard amortization; after month 120, remaining balance is re-amortized using the user-entered post-reset rate.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.