@dmertz I have a strange situation for which I can't find an answer on what the rule is and of course how to handle in Turbo Tax. Early January 2020 I did a $6000 backdoor Roth contribution by first making a non-deductible contribution to a Traditional IRA (that had a zero balance) and then converting that entire 6K to a Roth a few days later. That would be a simple back-door contribution situation with no taxes. However in August, I rolled a conventional 401K into the same Traditional IRA and subsequently converted $50K (which is only a portion of the balance) to the Roth. My 1099-R shows a distribution of 56K.
Based on the lack of co-mingling of any of the pre/post tax funds at any time, I would assume that the 50K is 100% taxable while the 6K should sail through with no taxes (as opposed to an application of the pro-rate formula to the entire 56K). Am I right? If I'm correct, how do I handle it in Turbo Tax to have the 50K taxed and the 6K not be taxed?
