What is social security contribution 1000?

Social security fees are calculated according to the proportion of the payment base, which is determined according to the local average social wage in the previous year. Social security is divided into four grades: lowest grade (40%), first grade (60%), second grade (80%) and third grade (100%). Assuming that the social security payment base is X, if your social security payment is 1 0,000 yuan, then according to the payment ratio of 80% in the second stage, you can get the following calculation formula: 1 000 = x * 0.8. Through simple calculation, it can be concluded that the payment base X is 1250 yuan.