You made an excess contribution in 2016, correct? If you have earnings on that contribution, they also need to be withdrawn. You will get a 1099-R for the withdrawal of the excess contribution next year, but the earnings are taxable on your 2016 return. Instead of waiting a year for that 1099-R and having to amend 2016, you should account for that 1099-R now. The broker should give you a statement showing the earnings calculated as part of this withdrawal of your contribution.
Remove the contribution from IRA contributions under Deductions and Credits
Enter the 1099-R under Wages and Income- Retirement Plans and Social Security
If you have the money in a popular brokerage company, you can probably get their EIN online rather easily.
Box 1- the total amount that came out (contribution plus earnings)
Box 2a- the taxable earnings
Enter Code J (AND Code 8 if under 59 1/2) in Box 7
Don't check the IRA box
You will type a brief statement explaining your excess contribution and how the earnings got calculated.
Next year, you'll get a 1099-R with Code P on it. Code P will mean taxable in 2016. And you will already have accounted for that.
