Reporting Roth IRA Contributions
Published in Rules
If you make a Traditional IRA contribution, you typically report it on your tax return in order to get a tax deduction. With a Roth IRA, since you won’t be getting a tax deduction, there’s no need for you to report the contribution on any returns. If you are tempted to contribution more than allowed, be aware that the financial institution holding your Roth IRA will still be reporting your contributions to the IRS and any extra will be penalized.
If you make a conversion, or make a nondeductible contribution to a Traditional IRA (because of 401k or income restrictions), or some other crazy scenario, you can use Form 8606 Nondeductible IRAs to report the activity.