Social security can be paid back for several months at the longest.

Legal analysis: the maximum social security payment is three months. Endowment insurance requires a continuous payment period of 15 years, and supplementary social security must also include endowment insurance. As long as you pay social insurance from the beginning, it is appropriate to pay it in time in these months. The maximum period stipulated in the social security payment policy is three months. The state stipulates that the old-age insurance must be paid continuously for 15 years, and the pension can be received normally after retirement. If the confession is cut off within 3 months, it can be made up. If the payment is interrupted for more than 3 months, the payment period (continuous payment time) will be recalculated. In addition, in these three months, only manual medical insurance reimbursement can be made, and automatic social security card reimbursement cannot be made.

Legal basis: Article 16 of the Social Insurance Law of People's Republic of China (PRC). Individuals who participate in the basic old-age insurance will receive the basic old-age pension on a monthly basis if they have paid a total of fifteen years when they reach the statutory retirement age. Individuals who participate in the basic old-age insurance and pay less than fifteen years when they reach the statutory retirement age can pay for fifteen years and receive the basic pension on a monthly basis; Can also be transferred to the new rural social endowment insurance or urban residents' social endowment insurance, enjoy the corresponding pension insurance benefits in accordance with the provisions of the State Council.