Enter the 1099-R, exactly as received. A follow up question, in the interview, will allow you to enter the amount of the Qualified Charitable Distribution (QCD). TurboTax (TT) will put the total amount, of the distribution, on line 4a of form 1040 with the net taxable amount on line 4b, with the notation QCD on the dotted line.
So, you do not see an actual deduction on form 1040. Usually the difference between line 4a and 4b is the amount of the QCD. But, if your IRA has a cost basis (previous non deductible IRA contributions) that non taxable part will also be included in the difference between 4a & 4b.
