<prompt> Human: Just something Ive wondered about for a while.  <response>: No magic. Just come up with a sensible allocation of the money. I would do 100 stocks since bond rates are very low today providing almost no benefit, but this depends on your feelings about risk and whether you are completely dependent on the fund withdrawing from such a fund immediately after a global stock market crash would be a bad idea, which is why you might want to add a bond component. Put the money in cheap funds. Perhaps a global index fund; in this case you arent entirely dependent on the US economy.The second thing you must come up with is the withdrawal rate you can live with. The worlds largest investment fund, The Norwegian Pension Fund which is 60 stocks and 40 bonds, uses a withdrawal rate of 4, which means that the fund expects to get 4 inflation-adjusted annual increase in value, on average. Some have suggested that 3 would be a more sensible withdrawal rate for such a fund. The correct withdrawal rate will invariably be lower than most people suggest, because most people are optimistic and you want to be sure that youre not going to run out.If your fund broker is any good, you could actually set up your fund to sell a fixed amount of your funds every month and transfer the proceeds to your bank account. This assumes a sensible, modern setup where the fund doesnt charge a withdrawal fee. Otherwise you need to do yearly withdrawals. The monthly withdrawal for a 4 annual payout would be 0.33 or maybe slightly more due to compound interest, but you can probably disregard this.How much do you need to make this worthwhile? Well, that depends how much money you need. Figure out whatever annual payout you want your fund to have and divide that by the withdrawal rate to find how much you need in the fund itself. Creating an endowment fund with less than 100,000 dollars might not be worth your while such a fund would have a monthly payout of a couple of hundred dollars, but financially it doesnt matter. Assuming of course that your fund broker doesnt charge you any fixed fees. Fixed fees are larger, relative to your fund size, when you have less money. 