Why does turbo tax want 2022 AGI?

[xmasbaby0]

Your 2022 AGI verifies to the IRS that the same person using your SSN is filing a 2023 return.  It is your "electronic signature."

[VolvoGirl]

Do you need to find your AGI?  You need your 2022 AGI to efile 2023. The AGI is on 2022 1040 line 11. If you filed a Joint return you use the same AGI for each spouse.

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

If you didn't file 2022 or filed it later in the year or mailed it, then try entering 0 for the AGI. If that doesn't work you will have to print and mail your return.

Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript