What information does the unit need to purchase social security?

Legal analysis: 1. Get the social insurance registration form, fill in all the columns in the form and affix the official seal. 2 provide a copy of the valid business license and local tax registration certificate of the unit, the original and copy of the enterprise code certificate, legal person and insured. 3. Fill in the insured personnel of this unit accurately according to the requirements of each column in the "Table of Changes in Employees". Provide labor contracts signed with employees.

Legal basis: Article 57 of the Social Insurance Law of People's Republic of China (PRC), the employing unit shall, within 30 days from its establishment, apply to the local social insurance agency for social insurance registration with its business license, registration certificate or unit seal. The social insurance agency shall, within fifteen days from the date of receiving the application, examine and issue the social insurance registration certificate. Where the social insurance registration items of the employing unit are changed or the employing unit is terminated according to law, it shall, within 30 days from the date of change or termination, go to the social insurance agency to handle the change or cancellation of social insurance registration. The administrative department for industry and commerce, the civil affairs department and the organization management organ shall promptly notify the social insurance agency of the establishment and termination of the employing unit, and the public security organ shall promptly notify the social insurance agency of the birth, death, household registration, transfer and cancellation of an individual.