Five percent. According to the official websites of People's Republic of China (PRC) and Ministry of Human Resources and Social Security, we know that the medical insurance fund deposits are used for the comprehensive evaluation of the annual medical insurance fund performance. Therefore, five percent of the total annual budget of each designated medical institution or the actual settlement amount of the annual medical insurance fund is reserved as the guarantee for the quality of medical insurance services. The implementation of total medical insurance fund management is an important measure to improve the utilization efficiency of medical insurance fund, ensure the basic medical needs of insured persons, reduce the personal burden of insured persons, safeguard the legitimate rights and interests of designated medical institutions, and ensure the safe and sustainable operation of the basic medical insurance system and fund.