I am an international student in USA on F-1 VISA. My fiance works as an independent contractor from India and received his income in my US bank account which I sent to him in India. We did this for around 6 months for so, for a sum of around $1000 a month. I work as an instructional assistant. My college is now providing help to file taxes this year. I would like to know while filing taxes how much detail I should provide to the college regarding this personal arrangement, and what is the best course of action so that I do not get in trouble with the IRS or the immigration department.
Since you are not (yet) legally married, he is a stranger to you and strictly speaking you don't need to worry about the tax impact of his income yet. File on your income alone.
That said, you may have to address the money transfer aspect at a later date as banks are getting skittish around money laundering regulations. It's really best if he has his own account for this, especially given you are not married.
The worst case scenario is that his income gets frozen due to money laundering regulations and the deposits in your account get treated as (unreported) monetary gifts to you. Again, you should be able to argue out of this but separate accounts make it much easier to do so.
if the deposit earned interest, you could be liable for taxes on the interest earned. If it ended up in a checking account, then you will not be liable for any taxes since checking accounts do not earn interest anyway. Your bank may inquire about where these transfers are coming from and question the legality of it.