How much can social security be discounted?

Hello, take my salary as reference. First of all, all social security is tax-free. For those who earn 5000 yuan, the personal income tax rate is 15%. If the company can pay social security according to the full salary, 400 yuan will pay 8% of the endowment insurance, 100 yuan will pay 2% of the medical insurance, and 400 yuan will pay the unemployment insurance housing accumulation fund, which will be 400+400+.