Avg 15 Year Mortgage Rate The initial rate is fixed for 15 years (180 months). When the rate adjusts, your new rate will be the then current index (weekly average yield on US Treasury securities adjusted to a constant maturity of 10 years) plus a margin of two percent (2.000%) rounding to the nearest one-eighth (0.125%).

Read our home loan analysis to compare the best home loan rates and options. Now may be time to opt for fixed mortgage rate before interest rates skyrocket.

The 30-year fixed-rate mortgage averaged 3.75% in the July 11 week, unchanged compared to a week ago, Freddie Mac said Thursday.

Fixed, variable, convertible, jumbo and everything in between: when shopping around for a mortgage loan, many people concentrate on interest rates but neglect to.