The income and expenditure of Jiaxing's social insurance fund in 2020 was not published online, but the statistical bulletin on the development of human resources and social security in 20 17 published on 20 18 showed that the income of the national social insurance fund was greater than the expenditure for the first time, and the difference was huge. In the reports published in the following years, the income of the national social security fund is also greater than the expenditure, so it is approximate that there is a big difference between the income and expenditure of Jiaxing social insurance fund in 2020. At the same time, it reflects that all citizens' confidence in China's current social security mechanism has been greatly enhanced, which has won favorable public opinion environment and high social support rate for promoting the stable development of China's social security fund and building a more perfect and stable social security mechanism.

1. Social insurance fund refers to the special funds paid by the payer and the payer respectively according to a certain proportion of the payment base and raised by other legal means in order to guarantee the social insurance benefits of the insured. Social insurance fund is a fund raised by the state for holding social insurance undertakings, which is used to pay insurance benefits and allowances enjoyed by workers due to temporary or permanent loss of working ability or job opportunities. The smooth raising of social insurance funds is the premise and foundation for the normal operation of social security system. In the process of raising social insurance funds, we should always implement the basic principle of balance of payments (including horizontal balance and vertical balance) and classify the raising modes of social security funds. There are three main ways of financing in the world: pay-as-you-go system, complete accumulation system and partial accumulation system.

2. The income of social insurance fund is a compulsory and earmarked form of fiscal revenue, and its income should be earmarked for the expenditure of government social insurance plan. China's social insurance fund income can be divided into basic old-age insurance fund income, unemployment insurance fund income, basic medical insurance fund income, industrial injury insurance fund income and maternity insurance fund income according to the project division. The income items of each insurance fund are divided into insurance premium income, financial subsidy income and other fund income (mainly fund interest income).

3. Refers to the expenditures in the nature of social insurance funds of units under ownership by the whole people that are included in the budget management according to regulations, including the expenditures of pension and pension insurance management fees handled by social insurance institutions for employees of state-owned enterprises, the expenditures of unemployment benefits handled by full-time management institutions of unemployment insurance funds for employees of state-owned enterprises, and the expenditures of medical expenses and funeral subsidies during the period when unemployed employees receive unemployment benefits.