<prompt> Human: So I need to preface this question with the following: It seems to be rpersonalfinance wisdom that paying off your mortgage early is typically a bad choice and that money is better spent on investment. After you pay off your first mortgage, while investing money you could have used to pay off that loan quicker, would it then be smart to take out a new mortgage on your house and immediately invest all of that money and begin paying a new mortgage?  <response>: I would never do this. In order to make money you have to guarantee that your investment is making more than you are paying in interest. Right now 30 year mortgages are hovering around 4.5-5. thats a hard number to beat. Even if you go shorter and get a lab sub 3 you are only making 1-2 if you do ok and possibly lose money if the market dips. Depending on your level of risk thats up to you, but I think most people would suggest just investing the money that you used to use for the mortgage. 