The best place to get your 2015 adjusted gross income (AGI) is from last year's original, unamended tax return. (Make sure you round your AGI up/down to the nearest dollar amount.)
You can find your AGI on:
Form 1040 – Line 37
Form 1040A – Line 21
Form 1040EZ – Line 4
Form 1040NR – Line 36
Form 1040X – Line 1, Column A
How else to get your AGI if you don’t have a tax return:
From a free IRS return transcript.
Automatic transfer if you’re in the same TurboTax account as last year.
If your AGI didn’t transfer automatically, you’re in a different account:
Go to your account from last year and find your AGI in My Tax Timeline.
Then, in the 2015 Tax Year section, click View adjusted gross income (AGI).
Before you can e-file your 2016 federal tax return, the IRS needs to verify your identity with your 2015 adjusted gross income (AGI).
If you can’t get your AGI for e-file, don’t worry. You can still file a paper return by printing out copies of your federal and state returns and mailing them in. For information on where to send your return, go to the IRS site Where to File Paper Tax Returns With or Without a Payment.
Tip: If you didn’t file last year and you’re in TurboTax, just tell us that when we ask you. But if you’ve already entered a number for your AGI, manually enter 0 instead.