What determine interest rate, cause I'm in the process of closing, and big banks like wells fargo said that they can only give me a rate of 6.35 but mom and pops brokers are telling me that I can get 5.75 with them, is that possible. I'm also doing a conventional loan also, not FHA, can someone give me some advice. Is my interest rate high cause of my credit, I haven't close yet so can I still go to that mom and pop brokerage