@jimjames_100 The value at the end of the year for the year of distribution, regardless if it is two years taken in one year is the value you enter as indicated by the question in TurboTax. You can't go backwards. I corrected the comment above. The cost basis at the end of 2016 is entered, assuming you have the Forms 8606 to confirm, and then the value as of December 31, 2017.
