According to the special purpose and its function, it is divided into:
Endowment insurance fund: it is the most important item in the social insurance subsystem and the most important item in the whole social security system.
Endowment insurance fund refers to the special funds raised in accordance with the law to pay the retirement pension benefits of employees within the scope determined by legislation.
Medical insurance fund: refers to the fund established in the form of social insurance to provide medical expenses for sick workers.
Unemployment insurance fund: it is a fund set up with centralized unemployment insurance premium under the protection of national laws to compensate the labor risk losses caused by involuntary unemployment.
Work-related injury insurance fund: refers to the funds needed for workers to obtain medical care, living security and necessary economic compensation from the state and society when they are injured, sick, disabled or even killed at work and temporarily or permanently lose their ability to work.
Maternity insurance fund: it is a social insurance system for female employees.
It is a fund that female workers need to obtain medical and health care services and material help from society and the state when they temporarily lose their ability to work due to childbirth.
From the perspective of capital accumulation, it can be divided into:
Pay-as-you-go mode: social insurance institutions raise funds according to the principle of fixed income based on expenditure, that is, employers and employees (or all employers) pay insurance premiums (or taxes) according to a certain proportion (overall rate) of total wages.
Set income by expenditure, leaving no accumulation.
Complete accumulation mode: its advantage is the income redistribution within several generations of an individual's life, that is, the personal account system.
Personal account refers to the insurance premium paid by employers and employees (or only one party) according to a certain proportion of total wages, which is credited to personal account as a fund for long-term accumulation and appreciation. Its ownership belongs to the individual, and it is collected at one time according to the conditions of receiving the fund or according to the use of friends.
Partial accumulation mode: it is the integration of pay-as-you-go mode and complete accumulation mode, and the principle of financing is to balance payments by stages.
At the beginning of the reform of China's old-age insurance system, the principle of "fixed income by expenditure, a little savings and accumulation" was put forward, that is, this model.
According to the ownership of funds, it can be divided into public funds (such as social insurance funds for pension, unemployment, medical care, work injury and maternity), personal funds (such as pension funds in personal accounts) and institutional funds (such as welfare funds of employers).
According to the labor management mode of funds, it is divided into financial funds (according to the current management mode, it is divided into budgetary management funds and extrabudgetary management funds), market trust management funds and provident fund funds.