The difference between Shanghai social security and Shanghai tax bill is that

Tax bills are paid by individuals, but social security is not paid by individuals. Shanghai's tax bill is the proof of individual income tax payment, which is paid by individuals. Personal income tax = taxable income x tax rate-quick deduction, taxable income = wage income-various social insurance premiums-exemption amount (3,500 yuan). Shanghai social security is not paid in full by individuals. Individuals only need to pay 20% of the total social security, and individuals only need to pay 13.2% of their income. The remaining 80% is paid by the enterprise. Social security is a non-profit social security system with the function of income redistribution. It is a system that forces most members of society to participate in order to prevent and share social risks such as old age, unemployment, disease and death.