I want to help my girlfriend build credit by buying a car. I have a really high credit score (about 700+)and I was thinking to add my girlfriend to my bank account and then borrow a loan for her to buy car. I want to make sure if i can be the primary account holder and have all the priority to limit her' money use in my account just in case so she doesn't over use it. Could anyone let me know if this is possible to do? Or if you have a better idea please let me know. Please let me know which is the best choice? My girlfriend car is sooo old and broken down recently. I wanted to help her buy a car about 7k, so i thought borrowing loan from bank and having her cosign with my account can also be a good opportunity for her to built her credit score since she doesn't have any. we have been together 1 yr so i think i can trust her with my bank account. Please let me know if it possible or against the law? Or I should help her open a bank account and then borrow a loan for her from her account? Then i can help her pay for the car sometime. Im only afraid she might have a very high interest rate... Please let me know if there any other way to help her. I really want to help my gf because she have dont so much for me.