Will the social security base change when changing jobs?

Legal analysis: it will change. According to the relevant regulations of social security, the base of employee social security payment is based on the average monthly salary of the previous year. However, the new company can't count the average salary of employees in the previous year, so it will take my salary in the first month as the payment base, and then calculate it according to the average monthly salary in the previous year in the second year. The social security payment base is adjusted once a year and will remain unchanged for one year after it is determined. The adjustment time of social security payment base in each region is different, and most of them are adjusted from April to July every year. Generally speaking, after the local government announces the new average social wage, it will start to refund more and make up less from the adjustment month.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 12 The employing unit shall pay the basic old-age insurance premium according to the proportion of the total wages of employees stipulated by the state and record it in the basic old-age insurance pooling fund. Employees shall pay the basic old-age insurance premium in accordance with the proportion of wages stipulated by the state and record it in their personal accounts. Individual industrial and commercial households without employees, part-time employees who have not participated in the basic old-age insurance in the employing unit and other flexible employees who have participated in the basic old-age insurance shall pay the basic old-age insurance premiums in accordance with state regulations and record them in the basic old-age insurance pooling fund and individual accounts respectively.

Twenty-third employees should participate in the basic medical insurance for employees, and the employer and employees should jointly pay the basic medical insurance premiums in accordance with state regulations. Individual industrial and commercial households without employees, part-time employees who have not participated in the basic medical insurance for employees and other flexible employees can participate in the basic medical insurance for employees, and individuals pay the basic medical insurance premium in accordance with state regulations.

Article 35 The employing unit shall pay the work-related injury insurance premium according to the total wages of employees and the rate determined by the social insurance agency.

Article 44 Employees shall participate in unemployment insurance, and employers and employees shall jointly pay unemployment insurance premiums in accordance with state regulations.

Fifty-third employees should participate in maternity insurance, the employer should pay maternity insurance premiums in accordance with state regulations, and employees do not pay maternity insurance premiums.