Can I add my wife to my extension I filed back in April? I filed it in TurboTax and thought I had added her. We file jointly. I was going to call the IRS Tax Advocate.

I swear I had added her social security and everything when I filed the extension back in April. Extensions are closed now, but I want to file jointly with her and see if I can add her to to my extension by calling the IRS. Is this even possible?