How to calculate the length of service of social security

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Supplementary endowment insurance has nothing to do with length of service.

The calculation formula of supplementary social insurance premium: social insurance supplementary base * social insurance supplementary proportion.

When paying back social security, I will take the corresponding annual payment salary confirmed by myself as the base and multiply it by the ratio of the average salary of employees in this city in the previous year at the time of payment and the average salary of employees in this city in the previous year in the corresponding payment year (i.e. the payment coefficient) as the payment base of the corresponding payment year, and pay it according to the proportion of 20%.

According to the detailed rules for the implementation of the basic old-age insurance for urban workers, when individuals apply for basic old-age insurance, the corresponding annual salary base grades are divided into the following three grades:

(1) Pay the average monthly salary of employees in this city in the previous year;

(2) 60% of the average monthly salary of employees in this Municipality in the previous year;

(3) the lower limit of the annual payment wage base.