Is the social security adjustment base adjusted once a year?

Legal analysis: Every July, the insured unit must report the social insurance payment base of the next settlement year to the municipal social insurance premium collection management center or the district social insurance agency (hereinafter referred to as the social insurance agency) that handles the insurance registration. The payment base declared by the insured unit shall be signed or confirmed by the insured employee himself. If the payer fails to declare according to the regulations, the social insurance agency may temporarily determine the monthly payment base at 1 10%. The payment base is an important calculation basis for the insured to enjoy social insurance benefits. After workers participate in social insurance, social security agencies will establish personal accounts for basic old-age insurance and medical insurance for life. The higher the base of employees' contributions, the more personal accounts, the more disposable medical expenses and the higher the pension they receive when they retire. However, the concealed, omitted and underreported payment base of insured units and insured personnel will directly reduce the level of social insurance benefits enjoyed by insured personnel. The monthly payment base of social insurance is generally determined according to the average monthly salary of employees in the previous year, which is determined once a year. Once determined, it may not be changed within one year.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 57 An employing unit shall, within 30 days from the date of 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 market supervision and management department, the civil affairs department and the organization management organ shall promptly inform the social insurance agency of the establishment and termination of the employing unit, and the public security organ shall promptly inform the social insurance agency of the birth, death, household registration, migration and cancellation of the individual.

Article 58 An employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. 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.