I am in sales and recently made a windfall of cash. I have on hand $600,000 in cash with zero debt other than my mortage which has a balance of 210,000 and a home equity balance of 35,000. The mortage is at a 30 year fixed rate of 5 1/4% but the interest collected is a bit over 700.00 per month. I feel I am wasting 700 per month if I continue to carry this loan. Can you please advise.