Your wife already filed and the two of you want to amend to a joint return? Then you have to wait for her return to be fully processed so you can amend that one to make it a joint return. You cannot file your return with your spouse's SSN on it--it would be rejected.
So you will be going to some extra work.
https://ttlc.intuit.com/questions/1899507-how-do-i-amend-a-separate-return-to-married-filing-jointly
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
