Fixed-rate mortgage. You pay the same interest rate and same monthly payment of principal and interest for the duration of the mortgage. The most common terms are 30, 20 and 15 years. Fixed-rate mortgages are best if you plan on being in your home for a while.
Adjustable-rate mortgage (ARM). The interest rate stays fixed for an initial interest rate period, which may range from 1 to 10 years. The rate may adjust up or down annually for the life of the loan based on a specified index. An ARM is a good option if you believe interest rates will go down over the next few years or if you plan on staying in your home 5 to 7 years or less.