If you come into some money, you may want to consider a buy down mortgage refinance. You simply use that money and to increase the equity of your home in one lump sum. By doing this you reduce your principal and you may be able to reduce your interest rate. Buy down interest rates will depend on the lender. So this is a situation where you definitely want to shop around. If you have the financial flexibility to invest in your home equity, it’s always a good financial move.