How much does Zhangjiagang social security 5000 minimum payment base deduct?

The minimum payment base of social security in Zhangjiagang is 5000, with deduction 1000. According to relevant data, the contribution ratio of employee pension insurance companies is 20%, and the individual contribution ratio is 8%, totaling 28%. Assuming that the payment base is 5000 yuan, the company's payment amount is 1 000 yuan.