TurboTax does not support preparing Forms 8606 for distributions from inherited traditional IRAs. You must prepare the form outside of TurboTax and then, when asked, enter the resulting taxable amount. To allow TurboTax to present this question, make sure that you have answered Yes when asking if the distribution was from an inherited IRA.
Make sure not to mix any information about the inherited IRA with information about your own IRAs.
