Why do I need to file Form 8606T if I've already submitted Form 1099-R for my Roth IRA distribution? I have no other 8606T situations.

Form 8606 is a form to report nondeductible IRAs and other IRA-related transactions that the government needs to track.  Examples include: 

• Distributions from a Roth IRA (especially to calculate the taxable amount of a nonqualified Roth IRA distribution.)
• Distributions from a traditional, SEP or SIMPLE IRA at any time after you have made nondeductible IRA contributions
• Convert a traditional, SEP or SIMPLE IRA into a Roth IRA

If you feel that the form does not apply to your situation, you can delete it from your return, using these steps:

 

TurboTax Online

1. While in your return, click on Tax Tools > Tools (in the black bar at the side of your screen).  
2. In the Tools Center, under Other helpful links click on Delete a form.
3. Click Delete next to the form you want to delete and follow the onscreen instructions. 
4. Once you have finished deleting the desired form(s) click the Continue with My Return box (in the lower right of your screen).

TurboTax CD/Download

1. Go into Forms Mode by clicking on the Forms icon in the top right of the blue bar. 
2. In the Forms in My Return list on the left, click on the form you wish to open and delete.
3. Click on the Delete Form box at the bottom of the screen.
4. To return to the interview, click on the Step-By-Step icon in the top right of the blue bar.  

"Distributions from a Roth IRA (especially to calculate the taxable amount of a nonqualified Roth IRA distribution.)"

 

More accurately, the only Roth IRA distributions reported on Form 8606 are nonqualified Roth IRA distributions and qualified first-time homebuyer distributions.  Regular qualified Roth IRA distributions are never reported on Form 8606.

 

In this case you apparently have received a nonqualified distribution required to be reported on Form 8606 Part III to determine the taxable amount, even if the taxable amount ends up being zero.