Can Beijing social security and provident fund bases be different?

Social security and provident fund can be different. Housing provident fund and social security belong to different purposes, and their bases are different. The monthly deposit amount of employee housing provident fund is the average monthly salary of employees in the previous year multiplied by the deposit ratio of employee housing provident fund. The monthly deposit amount of housing provident fund paid by the unit for employees is the average monthly salary of employees in the previous year multiplied by the proportion of housing provident fund paid by the unit.