I received another W2 in the mail I wasn't expecting after I filed what do I do?

[Oppy1]

I received a second W2 from my employer instead of just one I had 2 and one had much less on it. It was not expected at all. 

I paid taxes out of my check all year, how do I go about fixing this? Would I be able to file it again next year since I can't file it after unless I amend it? Or do I have to amend it since it's part of last years after I already filed. I am not very good with the process of filing or what I need to do or how everything works 100% so I could use some advise here. 

[DanaB27]

You will have to include the W-2 in the year that is shown on the form. For example, the 2021 W-2 has to be included on your 2021 tax return. You can not add it to another tax year.

If you have already filed your return then you will need to see if your return gets accepted or rejected.

• If your return has been rejected by the IRS, then all you have to do is make the changes on your return and refile.
• If your return has been accepted by the IRS, then you have to file an amended return (1040X) to make changes. But you might want to wait until your refund or payment is processed. Please be aware that you can e-file your 2021 amended federal tax return, but most states require amendments to be printed and filed by mail. Amendments for 2021 are not ready yet, please see How to amend a tax return for updates and instructions.

 

[Mikelsbug]

You will have to file an amended return after this one is processed and payment has been made, unless it gets flagged for missing information.  

[AmyC]

It probably won't be flagged for missing information  for 3 years. In which case, the penalties and interest would be adding up. Once everything from this year is settled, file an amended return unless your original rejects so you can fix it now. Besides, you may have more forms you were not expecting show up.