I can't recall if TurboTax gave me an alert that I was making contributions in excess, therefore am wondering if there would be any documentation in the tax report to indicate. I have done calculations myself for my MAGI but am not sure if they are as accurate as what TurboTax would calculate in the back-end.
A Roth IRA contribution does not actually go on a tax return, but you can enter it anyway to:
1) Tell you if your income qualifies you for a contribution and warn you if it does not.
2) Check if your income exceeds the limit to contribute to a Roth.
3) Track your contribution year-to-year if you use TurboTax every year.
4) Add the Retirement Savers Credit if you qualify.
If you entered it than you might have a "IRA Contribution Worksheet".
2018 adjusted gross income before any IRA deduction plus all of the following
foreign earned income exclusion
foreign housing exclusion or deduction
excluded employer-provided adoption benefits shown on form 8839
excluded US savings bond interest shown on form 815
student loan interest deduction
tuition and fees deduction
limit $5500 ($6500 if over 50 at year end) or compensation if lower than those other limits
phase-out if income too high
2) $120,000 if filing single or head of household, $0 if if married filing separate, $189,000 if married filing joint
3) line 1 less line 2
4) $15,000 single, head of household, or married filing separate and lived apart from spouse all of 2018, $10,009 all others
5) divide line 3 by line 4 round to 3 places do not enter more than 1.000
6) lesser of taxable compensation or $5,500 ($6,500 if 50 or older at year end)
7) multiply line 5 by line 6
😎 subtract line 7 from line 6. round up to nearest $10. if less than $200 enter $200
9) enter the contributions for 2018 to other ira's do not include simple or sep contributions
10) subtract line 9 from line 6
11) reduced Roth lesser of line 8 or line 10