With a fixed rate mortgage, the interest rate does not change for the term of the loan, so the monthly payment is always the same. Typically, the shorter the loan period, the more attractive the interest rate will be.

Payments on fixed-rate fully amortizing loans are calculated so that the loan is paid in full at the end of the term. In the early amortization period of the mortgage, a large percentage of the monthly payment pays the interest on the loan. As the mortgage is paid down, more of the monthly payment is applied toward the principal.