Use the home affordability calculator to determine what price of of home you can afford. Enter your annual income or monthly payment as well as your down payment and your monthly debts, then select the mortgage term of your choosing. The home affordability calculator will then tell you how much you can afford in a home. It will display your estimated monthly income and breakdown your monthly mortgage payments, debts, income taxes and the amount of money you will have left over each month. The bottom of the graph displays the “Payment Schedule” which outlines your mortgage payments to the principal as well as the interest payment.