Formula Used
Monthly payment = P × [r(1 + r)^n] ÷ [(1 + r)^n − 1]
P = principal, r = periodic interest rate, n = number of payments.
How the formula is applied
The calculation links Home price ($), Down payment (%) and Interest rate (%) to loan amount. Upfront and recurring insurance affect different parts of the estimate. Financing an upfront charge increases the balance on which interest is calculated.