Check your most recent federal tax return, Form 1040
Find the line labeled Adjusted Gross Income
Use the AGI from the last filed tax return for the tax year requested
If you filed jointly, use the AGI from that joint return
If you amended your return, use the AGI from the original filed return unless the IRS specifically asks for the amended amount
If you cannot find your return, request a tax transcript from the IRS
If you use tax software, sign in and open your prior-year return to view the AGI
If you used a tax preparer, ask them for a copy of your filed return
If you need it for e-filing, enter the prior-year AGI exactly as shown on the return or transcript