I got the original 30 year mortgage for my house in 1994. After 22 years of paying an extra 10% on the principal balance every month, my wife and I have finally paid the mortgage off, eight years early. Our goal all this time has finally been realized. It has been a long road, but especially satisfying knowing how much money we saved by lopping off 8 years of the original loan. It's something most any family can do, and can save you a boat load of money in the end.