Retirement tax questions

If you amend and claim the deduction you do not need the 8606.   If you had earned income in 2015, there will be no penalty.   You will probably get a refund if you had a tax liability.  Entering the Traditional IRA contribution in the amended return will tell you.

You won't find a Roth anywhere since a Roth is after-tax money so it does not get reported on a tax return, only Traditional IRA's must be reported - either as a before-tax deduction or an after-tax basis on a 8606 form that won't be taxed again when it is distributed.

Enter IRA contributions here:
Federal Taxes,
Deductions & Credits,
I’ll choose what I work on (if that screen comes up),
Retirement & Investments,
Traditional & Roth IRA contribution.

OR  Use the "Tools" menu  (if online version under My Account) and then "Search Topics" for "ira contributions" which will take you to the same place.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**