The company that left at the end of the month deducted the social security for next month.

Legal analysis: employees who leave their jobs and work for less than one month in the current month need to pay social security for them. Moreover, individuals and units need to pay social security fees in accordance with the provisions of national documents, and there can be no illegal deduction in violation of the Social Insurance Law.

Legal basis: Article 32 of People's Republic of China (PRC) Social Insurance Law * * * For employees who are on the job and have not gone through resignation procedures, the unit shall declare on time and pay social insurance premiums in full and on time, and shall not delay or stop paying social insurance premiums for employees at will. Employees who work less than 1 month in the month of resignation can enjoy social insurance purchased by the state; After the successful purchase of social insurance in the current month, the unit should inform me of the details of paying social insurance premiums in accordance with the normal process. After going through the resignation formalities, when the employee settles his salary, the social security of the month shall be paid by the unit and individual according to the social security regulations.