If you have a copy of your 2017 return, then look at your 1040 form to find your 2017 AGI.
Select your form to see where the AGI is located on each form.
Form 1040 – Line 37Form 1040A – Line 21Form 1040EZ – Line 4Form 1040NR – Line 36Form 1040X – Line 1, Column A
If you do not have a copy of your 2017 return, then you can go to the IRS website and get a transcript of your 2017 return
