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 returns are manually processed.
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.
To find your AGI, select the option below that best describes your situation.
Learn about being married filing separately in 2019, but filing jointly in 2020.
Learn about being married filing jointly in 2019, but filing separately in 2020.