One percentage point on a $300000 mortgage can increase your ...This is a common question asked these days due to all of the people that are starting to feel the squeeze from their adjustable rate mortgages continuing to rise each year. Another important benefit of refinance mortgage loans is that gives the borrower more flexibility. It allows you to change loan terms from a long one to something shorter. In this way, you can pay off the principal more quickly, thus saving you from the total interest charges.