Can I pay back the social security two years ago now?

Legal analysis: Yes. Objectively speaking, social security can still be paid if it is broken. But it depends on your local specific policies, and you can't generalize. At present, there are different regulations on whether social security is compulsory, forbidden or free, and the results are very different, which can only be based on the interpretation of the social security agency in the place where the parties participate in the insurance.

Legal basis: Article 58 of People's Republic of China (PRC) Social Insurance Law. The employing unit shall handle social insurance registration for employees within 30 days from the date of employment. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay. Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration. The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.