Do I have to provide spouses name and social security number if i am filing separately?

[Melaine · Accepted solution]

Yes, however, if you are unable to get that information, please make sure to include their full name and an explanation with your return.  However, you will need to print the return and file by mail.  When mailing, include an explanation as to why you don't have it, (her information).  Use the following IRS link to see where to mail your return; Where to file paper tax return with or without payment.