Longevity risk -- the risk that you may outlive your money -- is something that many retirees fear. What if you live to 100? Do you have the money to sustain yourself?
Richard Johnson of The Urban Institute, a Washington, D.C., think tank, says you can continue to sock money into an IRA until you reach age 70½. You can build up your 401(k) and Roth IRA indefinitely, thus adding to your nest egg for the years when you may most need it.