Interest rates for 30-year fixed mortgages are staying rather low in recent times due to changes occurring within the housing market. This has more individuals taking 30-year fixed mortgages than any other type of mortgage. Low interest rates are very important in that the interest rate remains fixed for the life of the loan. This is opposed to the variable rate mortgage that enables the interest rate to fluctuate based on the fluctuations that occur with the base rate set by the Federal Reserve.