I am doing a backdoor Roth IRA which requires first adding the contributions to a regular IRA and then adding form 1099-R to indicate a conversion.

My problem is when i am trying to add a Regular IRA.

The Regular IRA Contribution has been made with after  tax dollars. Hence, this contribution should not increase my tax liability. However, in Turbotax it does.  

The Conversion to Roth was also done the very same day, hence no tax liability should accrue there either.

How can i enter my Regular IRA Contribution indicating after tax dollars so that turbotax does not increase my tax liability?