Can I efile 2021 proseries tax return today on 4/27/2025?

[JOHNNYCPA]

can i efile 2021 federal tax retun using proseries?

If I have to mail a paper return to IRS, do I attached the W2?

Is there any other way to submit other than paper return mailed?

Thanks, 

John

[IRonMaN]

Your only option is to paper file.  There are only 3 years open at time that can be e-filed.  And yes you need to attach the W-2.

[abctax55]

You (or rather, the client...) could hand deliver the paper copy to an IRS office.

[Just-Lisa-Now-]

You cant Efile a 2021 return with ANY software right now, that window closed back in November 2024