@gmn19811 wrote:
This sounds logic, however, when you want to file "Married filing separately", you need to indicate your wife's name as well as her social security number, and provided your wife does not have a social security number, then you need and TIN number for her. what you do if the taxpayer who was married last day of the year is now divorced and his ex wife is not welling to work with him? (this is a real case that i enountered)Thanks!
If you are a US citizen or US resident and your spouse does not have a Social Security number or an ITIN and you are not applying for an ITIN with the tax return then you can only file your tax return as Married Filing Separately. Where asked to enter the spouse's Social Security number enter 999-88-9999. You can only print and mail your tax return, it cannot be e-filed. When you print the tax return erase the Social Security number for your spouse and manually enter NRA for non-resident alien.
See this TurboTax support FAQ for the procedure to print and mail a tax return using the online editions - https://ttlc.intuit.com/questions/1944348-how-do-i-print-and-mail-my-return-in-turbotax-online
