Excellent article by Larry Rubenstein of the Brandenton Herald about Missed Fortune 101, Douglas Andrew's book. In his article he states how using the strategies in Doug Andrew's book can help people reduce their debt the fastest. Someone with a 7.5% interest only mortgage would be paying about 6% if they were in a 20% tax bracket. On a 100,000 mortgage, that's $6000 a year in interest payments. You would do well by investing it in a tax deferred or tax free environment by letting the interest compound instead of sitting earning nothing in your house.