Married filing separately can I give mortgage interest and real estate taxes deductions to my wife if her name is not on the loan or deed

Yes. If you are married, she is considered an owner of the property for tax purposes even if not on the deed or mortgage.

I like the answer, but is it true? "If you are married, she is considered an owner of the property for tax purposes even if not on the deed or mortgage." Can you point to something that shows your statement is legal? We would like to do the same thing.

It depends if you live in a community property state. Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington and Wisconsin are community property states and you are both co-owners of property that the other owns.