Fixed vs. Adjustable Rate Mortgage Calculator

The Fixed vs. Adjustable Calculator will help you determine whether you should choose a fixed-rate or adjustable-rate loan. The interest rate for a fixed-rate loan stays the same for the life of the loan. But with an adjustable rate mortgage (ARM), the interest rate fluctuates periodically based on an index like the U.S. Treasury Security Yields (1 Year T Bill), the Cost of Funds Index (COFI) and the London Inter-Bank Offer Rate (LIBOR).