I am 43 years old and have a wife and two kids aged 12 & 4 to support. My current monthly expenses add up to about USD$ 8000 per month. We do not have any debt (my home, cars etc are all paid for). My investments include commercial property and a few shares on the stock exchange. We do not have any retirement funds or policies. I would like to retire in a years time and would like to know how much we would have to invest at that time in order to generate the equivalent income for the next 40 years. This would have to be ongoing as it would be passed on to my kids.