Me and my wife are married but not together anymore why do I need her ssn

[kerryrussell140]

We just haven't devorced and have been separated for over a year

[CherylW · Accepted solution]

Her ssn is needed on your return because they will look her return up to make sure she's filing separately as well (or head of household, in some cases).

[DoninGA]

If you are filing as Married Filing Separately the tax code requires you to enter your spouse's name and SS number.