How to Calculate Cost of a Mortgage Bond
- 1). Gather the information to make the calculations. You will need to know the principal of the mortgage---that is, the base amount of the loan---as well as the interest rate of the loan and the number of payments due on the loan. In the case of a mortgage, the number of payments can normally be calculated by multiplying 12 by the number of years of the repayment period.
- 2). Calculate the monthly payment that will allow you to pay off the principal and interest completely by the end of the loan repayment term. The easiest way to calculate the monthly payment is to use an online mortgage calculator. With these calculators, you simply plug in the principal amount, interest rate and repayment period, and the calculator will determine your monthly payment.
- 3). Multiply your monthly payment amount by the number of monthly payments you have to make. This total is the full cost mortgage loan, including the interest the bank charges for the loan.
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