 It depends, sometimes even more than a full point. And that can be a huge difference in your mortgage payment. But there are temporary buy downs where you might buy down the interest rate one point for the first year. Or maybe you buy it down two points for the first year, one point for the second year, and then it resets to whatever the market rate was when you bought your home. But for those first two years, you have the opportunity to get raises, to increase your income, pay down other debt, and enjoy a lower mortgage payment.