TurboTax shows your MAGI for the purpose of a Roth IRA contribution on line 1 of TurboTax's Roth IRA Contribution Limit Worksheet.
If you have exceeded the permissible Roth IRA contribution, TurboTax will flag the excess as you proceed through the Roth IRA contribution section. If you had not entered all of your taxable income prior to entering the Roth IRA contribution, TurboTax might not have seen it as an excess contribution at that time.
