How many social security files do general companies buy for employees?

According to the lawyer 365 website, under normal circumstances, the social security grades purchased by the company for employees are divided into the lowest grade, the first grade, the second grade and the third grade. These grades are usually set according to the wage level of employees and the average social wage, and the specific payment ratio and amount will vary from region to region. For example, the proportion of social security contributions in some areas may include 40%, 60%, 80%, 100%, and some areas may provide more grades. Under normal circumstances, enterprises will choose the appropriate social security grade for employees according to their salary level and social average wage. The proportion of social security contributions consists of individual contributions and unit contributions. Social security contributions vary from place to place, and the base is the total wages. Because the payment base and compensation base of the five major social insurance types, such as pension, work injury, medical care, maternity and unemployment, are all linked to the average salary of employees on the job last year, the increase of the average salary level will bring about the adjustment of various social insurance types.