I made a non-deductible contribution to my traditional IRA for the 2015 tax year and did not include it in my tax return. There is no tax impact as it was non-deductible but I would like to keep a record of contribution with IRS. Do I need to amend my tax return or can I simply prepare the form 8606? If so, do I use the form 8606 from the 2015 tax year? And is there a penalty that I would have to pay?
