Tax id for spouse and kid
Hi,
I have just arrived to US. I am on H1 visa and here along with my spouse and kid (1 year). I have my SSN with me and I'd got when I travelled here last time. That time I came alone.
I will have to apply for Income -Tax this time and I have submitted my W-4 to my company.
My questions is :
1. How can I apply for my spouse's Tax id. As she is on H4 visa she is not eligible for SSN. I need to apply for Tax id. How can I do that?
2. How can I apply for my kid's tax -id?
3. As in one of the post I've read that "to get maximum benefit you should file it as joint instead of claiming them as dependant". I did not understand this. Could you please explain me and tell me how should I file tax?
4. Can I apply for tax -id (for my wife and kid) now or I need to wait for something?
Is there any time, one should apply for tax-id?
Please help me out.
Regds,
Ni Dalal