How to Calculate Adjustable Rate
Calculate ARM payments for initial period, after adjustment, and at the lifetime rate cap.
The Formula
maxPayment = P*(capRate/1200)*(1+capRate/1200)^n/((1+capRate/1200)^n-1)The adjustable rate formula uses the mathematical relationship: maxPayment = P*(capRate/1200)*(1+capRate/1200)^n/((1+capRate/1200)^n-1). Each variable in the formula represents a measurable quantity that affects the final result.
Step-by-Step Method
- 1Identify all input values needed for the adjustable rate calculation.
- 2Substitute your known values into the formula: maxPayment = P*(capRate/1200)*(1+capRate/1200)^n/((1+capRate.
- 3Perform the arithmetic operations in the correct order (PEMDAS/BODMAS).
- 4Check that your result has the correct units and is within a reasonable range.
- 5Verify using the interactive Adjustable Rate Calculator to confirm your answer.
Related Topics
ARMadjustable ratemortgagerate cap
Use the Interactive Calculator
Skip the manual math — get instant results with our free Adjustable Rate calculator.