I would rather e-file so it is faster processing. I filed my original 2023 tax return using 2023 turbotax desktop. I purchased the 2024 turbotax desktop version as well.
No. You cannot use the TurboTax 2024 software to e-file a 2023 tax return.
The 2023 tax return can only be printed and mailed using TurboTax, it cannot be e-filed.
An amended 2023 return cannot be e-filed. Sorry. It has to be filed by mail.
Only certain paid tax pros using professional tax software can e-file past year amended returns. You cannot e-file an amended return that you prepared yourself using TurboTax. Your 1040X must be printed, signed and dated in ink, and then you need to mail it in. Use a mailing service like certified mail so you will know the IRS received it, since you will have a long wait for it to be processed.
Do not expect quick results from amending. It can take four months or more for the IRS to process an amended return.
You can watch for information here:
https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1