For students, it is better for students to apply for it themselves (in the name of student loans). During school, it is 1 year after graduation. During these periods, you don't need to pay interest, just return the principal. After the prescribed time, interest began to be paid. If your colleague helps his brother to get a loan, it's on the lender, and the corresponding interest needs to be paid monthly! For details, please refer to the loan interest rates of various banks in official website.