Do Roth IRA contribution through my employer listed in block 12 of my W-2 need to be re-entered in the deductions section or does the software put it where it belongs.

[DoninGA]

Elective deferrals to a retirement account shown on the W-2 in box 12 with a code of D are not entered anywhere else on a tax return.

[dmertz]

Enter any amount shown in box 12 of your W-2 only in box 12 of TurboTax's W-2 form, nowhere else in TurboTax.