According to relevant information: before 65438+February 20th. The deadline for social security payment of Shandong Electronic Taxation Bureau is 65438+February 20th. From February 20, 65438 to February 20, 3 1 year, social insurance premiums could not be paid during this period, because this period was entered and recorded by the system, and new accounts could not be used. Therefore, in order to pay social security, social security is generally paid in the first half of each month, and it is generally not paid in the second half.