Require minimum withdrawals using IRS life expectancy table. At 70 1/2 you are forced to withdraw the minimum. Also now adds 10% withdrawal penalty for before 59 1/2.
This page is to help you find out how much to put away tax deferred to get a certain amount of money in the future, and how much you could expect to draw out of that money. Just put in some numbers to see how much money you need for your retirement!