An adjustable-rate mortgage (ARM) is a mortgage in which the interest rate changes at predetermined intervals. The interest rate will increase or decrease based upon an index which reflects the current money market rate. The change in interest rate will also change the borrower's monthly payment. To protect the borrower from "Payment Shock", the loan has preset limits as to the amount the interest rate can change both annually and over the life of the loan.
Posted rates are for well qualified borrowers. Final rate determined by credit score.