Ten percent. According to the Notice on Standardizing the Repayment Methods of Medium-and Long-term Loans issued by CBRC, the repayment methods of medium-and long-term loans shall be reasonably determined, and the repayment amount shall be at least twice a year, with each repayment amount not less than 10% of the loan amount. China Banking Regulatory Commission is authorized to supervise and manage banking financial institutions in a unified way.