Social insurance premiums paid by enterprises or employees are the income of social insurance funds.

The income of social insurance fund refers to the social insurance premiums paid by enterprises or employees, which is one of the important fiscal revenues of the government. The income of the social insurance fund is mandatory and must be used in accordance with the provisions of earmarking, that is, to pay the expenses of the government's social insurance plan. The social insurance fund is a special fund set up to ensure that social insurance has reliable funds and the unity of the whole society, and is used to pay social insurance benefits.