F1 Student used CPT for 3 months in 2008
I am an international student with F1 VISA(<5 years study). I used my CPT this summer for a 3-month internship in a non-my-school state. During that time, I was paying that state's State Tax and Federal Tax. I got married with my husband in September. He has been in US for 6 years with F1 VISA. We purchased a new car at the end of 2008.
Now I am back in my school town and prepare my tax refund for 2008. I have a couple of questions and truly appreciate anyone's help.
(1) Should I file married but filed separately or jointly or even other status to get more tax refund if I am eligible?
(2) Is my husband qualified for the new vehicle registration deduction? If he is going to use this itemized deduction, am I required to do so either? In that situation, am I still eligible for the tax treaty deduction between US and other country?
Thanks for your help!:)