TurboTax IRA contributed wrks modified adjusted gross income calculation question

[Louise35]

This is a question regarding the Roth IRA contribution limit smart worksheet, Line 1 ‘enter your modified adjusted gross income’ -

TurboTax automatically calculates/enters the amount of line 1, but it’s not the same amount of the adjusted gross income from 1040 line 11. I’m confused why the amount of line 1 on that worksheet is different from 1040 line 11? How TurboTax calculates it? What is the formula for calculating it?

Thanks.

[MinhT1]

The Modified AGI for Roth IRA purposes is different from the AGI on line 11 of form 1040.

For the calculation of the Modified AGI for Roth IRA purposes, please see Worksheet 2-1 contained in this IRS document.

[Louise35]

Thanks for your quick response! My modified AGI for Roth IRA purpose on Line 10 of pub 509-A worksheet 2-1 is 1040 line 11 subtracts Roth conversion (as I have 0 on line 4-9).  However, line 1 of TurboTax Roth contribution limit worksheet shows a different number, $4800 less than 1040 line 10. Why? What could possibly cause the difference of $4800?

[Louise35]

Line 1 of TurboTax MAGI for Roth contribution worksheet shows a different amount than what on line 10 of IRS pub 509-A worksheet 2-1 MAGI for Roth purpose. Should they be the same amount? Not sure what I’ve missed?

Thanks.

[AnnetteB6]

In order to answer your question and either offer and explanation or determine if there is an issue with the calculation performed by TurboTax, it would be very helpful to have a diagnostic copy of your tax file.  The diagnostic file will not contain personally identifiable information, only numbers related to your tax forms.  

If you would like to provide us with the diagnostic file, follow the instructions below and post the token number along with which version of TurboTax you are using and what states you are filing in a follow-up thread.  If possible, a screenshot of the token number would be useful since often the number is automatically redacted when it is posted.

Use these steps if you are using TurboTax Online:

• Sign in to your account and be sure you are in your tax return.
• Select Tax Tools in the menu to the left.
• Select Tools.
• Select Share my file with agent.
• A pop-up message will appear, select OK to send the sanitized diagnostic copy to us.
• Post the token number here. 

If you are using a CD/downloaded version of TurboTax, use these steps:

• Select Online at the top of the screen.
• Select Send Tax File to Agent.
• Click OK.
• Post the token number here.

@Louise35