Just enter the 1099-R for the IRA distribution into TurboTax, as it appears on the 1099-R form that you received. After you enter it and proceed through the interview it will ask you a series of questions about the IRA distribution. If the 1099-R has distribution code 7 or 4 in box 7, the IRA/SEP/SIMPLE box is checked on the 1099-R, and you are over 70½ years old, you will come to a screen that asks you whether you transferred part or all of the distribution to charity. If you transferred part of it, it will give you place to enter the amount.
