I am greencard holder and i am married since 4 months with f1 student. She is in F-1 visa as an international student and we have not applied for anything yet. We have just registered our marriage. Now  I wanted to know how will  I be able to file joint tax when she does not have SSN. She does not have SSN so I don;t how will I do it? And will it be benificial for me to use her as a dependant and filing a tax or not?

Please share your experince and ideas.