There's a number called critical mass. This is the amount of money it takes to make at leas 30 grand a year off of completely safe investments. Cds, jenny mays and what not. Basically its the amount that earns 30 grand a year at 3% interest. If I'm correct thats about 3 mil+ a little bit at the moment. That is wha defines a fortue in the US, or anywhere fr that matter. Aka: You never have to work again.