Do you need your AGI to efile 2023? 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
