If you have filed with TurboTax, check here
2017 AGI to obtain the amount.
If the above method does not work or you did not file with
TurboTax, the best and fast way to access the 2017 AGI is to order a transcript
from the IRS. Click here
Get
Transcript
and select "Get Transcript Online "
On the transcript, look under section "Adjustment to
Income" and find the amount for Adjusted Gross Income.