How much do I need to pay for the social security that I haven't paid for a year?

According to Chinese laws, social security can be paid for up to two years, that is to say, it is calculated from the month of payment (calculated according to the payment period, not according to the cumulative month). For example, this month is any time period from April of 10 to April of 2009, which is counted as one year. For example, any time period from 10 April to March 2009 to April 2008 is counted as two years, and only September 2008 is paid separately.

Within 2 years, if you need to pay social security, you can pay it according to the social security pension insurance payment formula.

Calculation method of paying back the old-age insurance premium:

At the time of transfer, the average monthly salary of employees in this city last year was × 12 (month) ×(30%+ overage years × 1%)× overage years.

Years over age = actual age at transfer-stipulated age. (The number of months in the overage period is less than 6 months, which is calculated as half a year, and more than 7 months is calculated as one year).