Are you asking about charging customers for consulting services? Generally not more than 3%.

If it is a formal platform or bank loan officer, it is impossible to charge any formalities fees like customers, and only loan intermediary companies should charge consulting service fees to customers;

Generally, the handling fee like this will not exceed 3%. You only need to sign a contract with the customer before applying for a loan, and then ask the customer to pay the formalities fee after the loan is issued.