How to calculate the base of individual social security payment?

1, the monthly average of the employee's total salary in the previous year is taken as the monthly payment base of this year.

2. The new employees of this unit shall take the full salary income of the employee's starting salary in the current month as the payment base.

3. The insured unit takes the sum of the monthly payment bases of all the insured employees of the unit as the monthly payment base of the unit.