Do I have to re-file 2015 return when this will have no tax impact? Can I update the information somehow on the 2016 tax return?
Because you are using the Desktop edition of TurboTax, you will be able to edit your IRA information directly on the worksheet.
To do this:
If you didn't receive a 1099-R and didn't report this rollover in 2015, you won't need to amend your 2015 tax return unless a portion of this rollover included after-tax income. If it was, you will see an increase in the basis corresponding to the amount of after-tax income. In that case, you will need to amend your 2015 return to include Form 8606, Non-Deductible IRAs.
Because you are using the Desktop edition of TurboTax, you will be able to edit your IRA information directly on the worksheet.
To do this:
If you didn't receive a 1099-R and didn't report this rollover in 2015, you won't need to amend your 2015 tax return unless a portion of this rollover included after-tax income. If it was, you will see an increase in the basis corresponding to the amount of after-tax income. In that case, you will need to amend your 2015 return to include Form 8606, Non-Deductible IRAs.