@Aloneintheworld , you have not said why you believe that any of this distribution should be nontaxable. The only reasons that a portion of this distribution would be nontaxable is if you rolled over that portion to another traditional retirement account or if you have basis in nondeductible traditional IRA contributions. Either way, TurboTax has to calculate the nontaxable amount from your entries, you cannot calculate the nontaxable amount yourself outside of TurboTax.
