Where do I find my AGI?

https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/00/270...

Your 2019 tax return shows your 2019 Adjusted Gross Income  (AGI)  If you filed a joint return then the AGI is the same for each of you.

Form 1040        line 8b

If you are using the same TT account that you used last year, you should also be able to find this number in your Tax Home for 2019

If entering the amount from your 2019 tax return does not work, then try entering “0” instead.  If that does not work and you still cannot e-file, then print, sign, and mail your tax return.

You can get a free transcript of your past return from the IRS:  

https://www.irs.gov/individuals/get-transcript

Note: If you filed late or amended your return, your correct 2019 AGI may not be in the system. 

https://ttlc.intuit.com/questions/1944348-how-do-i-print-and-mail-my-return-in-turbotax-online

If you used TurboTax last year, it is the first amount listed on the summary page.  If you did not use TurboTax, you can find it on line 11 from last year's 1040 form.  If this is your first time filing, enter 0.

2019 AGI is on line 8b of a 2019 Form 1040.