What's the latest date of Shanghai social security?

Shanghai social security is paid by ICBC through the company's social security account. Generally, it will be withheld twice a month, the first time: 8th of each month, and the second time: 20th of each month. Therefore, your company should ensure that there is money in the company's social security account, so that it can be withheld uniformly at that time. Of course, if it is not paid within one month, the bank will withhold it together when there is money in the account next month.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.