Modified AGI is not listed anywhere on the 1040.
You start with your AGI (1040 line 11) and adjust (if necessary) from there.
Add up your gross income from all sources.
Check the list of “adjustments” to your gross income and subtract those for which you qualify from your gross income. The list is on the 1040 form under Schedule 1.
The resulting number is your AGI.
Add back any deductions for which you qualify; these can include student loan interest and individual retirement account contributions.
The resulting number is your MAGI.
link
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
