I thought my 2023 taxes were filed last year, but I recently discovered they were not. I am trying to file my 2024 taxes. How do I handle this situation?

[xmasbaby0]

Use zero for your 2023 AGI when you try to e-file 2024, since the IRS does not have a 2023 AGI in the system for you.  If using zero does not work, then file 2024 by mail.

And as for 2023----the only way to file 2023 now is by mail..  E-filing is permanently closed for 2023.  Print 2023, sign and date it in ink, and mail it in.

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as certified mail so you will know the IRS/state received the return.

Federal and state returns must be in separate envelopes and they are mailed to different addresses.  Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.