IMPORTANT: If you filed 2019 by mail, you filed it late with extension OR the IRS has still not processed your return, then you need to enter your AGI as "0". IRS is backlogged eons for 2019 taxes and even people who filed on time may not have their taxes "processed" from 2019, THUS regardless of your AGI you have listed on your taxes, the IRS still sees the AGI for verification as "0"
My 2020 taxes were "rejected" for this very reason, not knowing that because they had still not processed my 2019 taxes, that I needed to enter "0" for AGI for 2020. I went back after learning this VERY IMPORTANT tip and corrected and refiled and was ACCEPTED.
*Make sure you verify with TurboTax or your account professional. This is not legal advice.
This is gonna impact millions of others who do not know this info. Hope it helps.
