You can, but it is important to select the right IRA for your needs. A Traditional (or Rollover) IRA is typically used for pre-tax assets because savings will stay invested on a tax-deferred basis and you won't owe any taxes on the rollover transaction itself. However, if you roll pre-tax assets into a Roth IRA, you will owe taxes on those funds. For after-tax assets, your options are a little more varied. You can roll the funds into a Roth IRA tax-free. You also have the option of taking the funds in cash or rolling them into an IRA along with your pre-tax savings. If you choose the latter option, it is important that you keep track of the after-tax amount so that when you start taking distributions, you'll know which funds have already been taxed. IRS Form 8606 is designed to help you do just this. Before making a decision, please consult with a tax advisor about your specific situation.