Your Adjusted Gross Income (AGI) is a calculation and:
The IRS requires your 2019 AGI to verify your identity for e-filing. If you're paper-filing your return, you won't need your AGI because those are manually processed.
There are a few places you can get your 2019 AGI:
If you didn't file a 2019 federal tax return (or you haven't filed one yet), enter 0 as your AGI.
Married Filing Separately in 2019 but filing jointly in 2020?
Filed jointly in 2019 but are Married Filing Separately in 2020?
You won't find your AGI on your W-2 or 1099 form because those forms don't take into account over a dozen above-the-line deductions that go into calculating your AGI.
Related Information:
Source: TurboTax FAQ
Your Adjusted Gross Income (AGI) is a calculation and:
The IRS requires your 2019 AGI to verify your identity for e-filing. If you're paper-filing your return, you won't need your AGI because those are manually processed.
There are a few places you can get your 2019 AGI:
If you didn't file a 2019 federal tax return (or you haven't filed one yet), enter 0 as your AGI.
Married Filing Separately in 2019 but filing jointly in 2020?
Filed jointly in 2019 but are Married Filing Separately in 2020?
You won't find your AGI on your W-2 or 1099 form because those forms don't take into account over a dozen above-the-line deductions that go into calculating your AGI.
Related Information:
Source: TurboTax FAQ
To find last year's adjusted gross income (AGI), select the option below that best describes your situation.
The IRS requires your 2020 AGI to verify your identity for e-filing. If you're paper-filing, you won't need your AGI.
Learn about being married filing separately in 2020, but filing jointly in 2021.
Learn about being married filing jointly in 2020, but filing separately in 2021.