wouldn’t it be nice to lock in for the next 30 years the price of gas at $2.50/gallon or your monthly rent payment or even your your monthly health insurance bill? Well, you can’t and you know they are going up. Locking in your house payment at 4% for the next 30 years could be the best financial decision you ever make. Mortgage rates have moved back over 4% for the first time this year. They spent most of 2014 hovering 4.5%. Five years ago, closer to 5% and ten years ago over 6%. Use this mortgage calculator to see the monthly payments. I like to put in different numbers and see what the difference is.