Why are Social Security deductions different each month? Deduction is not the same what happened?

1 Deduction base change: In general, our social security contribution base, is to be determined by the employee's own average monthly wage income in the previous year. For employees who worked less than one year in the previous year, it is calculated by dividing the gross salary by the actual number of months worked. When there is a change in our average monthly salary, there will also be a change in the monthly social security personal deductions, the higher the salary of the employee, the higher the social security contribution base will be. However, there is an upper and lower limit.

The lower limit: the contribution base is lower than the minimum contribution base of each place, then pay the social security in accordance with the minimum contribution base, that is, 60% of the local social wage.

Upper limit: If the contribution base is higher than the maximum contribution base of each place, the social security will be paid according to the maximum contribution base, which is 300% of the provincial social wage.

If the company is in accordance with the actual salary of the month for us to pay social security, when the actual salary is not fixed, every month in the change, will also directly affect the social security contributions.

2 Adjustment of the contribution ratio: In the social security, the contribution ratio of each insurance may also be adjusted, so that if the contribution ratio has changed, then our social security deductions will also change.