I need to refill 2020 taxes. SS# corrected with SSA. It's corrected. 2021 taxes no problem. Do I still need to do a 1040X or can I just send in 2020's Tax forms?

[Mike9241]

1040x otherwise there mat be issues since you will have filed two returns with different ssns

[DoYour12345]

Thanx,

Original 2020 had correct SS#, but SSA had incorrect number.  Had to send birth certificated, government ID and correspondence with letter head confirming ID to SSA to correct their numbers.

Doyour12345

[fanfare]

if you listed SS benefits on 1040 there's no reason to amend.

[Critter-3]

If you're 2020 return was rejected because the social security number was incorrect and you never filed the 2020 return by mail then you need to mail in a 2020 return now. Do not mail in an amended return if the original was never filed.