How to merge two social security numbers?

1. First, you can bring the original ID card to the nearest street, town social security service agency and district social security agency to merge individual social security numbers;

2. Then go to the local tax department to cancel the terminated personal social security card number.

The payment base of social security refers to the wage base used by enterprises or individual employees to calculate and pay social insurance premiums. This base multiplied by the prescribed rate is the amount of social insurance premiums that enterprises or individuals should pay.

Local social security payment bases are linked to local average wage data. It is determined according to the average monthly wage income of employees from June 1 day to February 1 day in the previous year. Once a year, it will not change within one year after confirmation. The time to apply for adjusting the social security base is generally in July.

Enterprises generally take the total wages of enterprise employees as the payment base, and individual employees generally pay social insurance premiums based on their average monthly salary in the previous year. In China, the payment base is approved by the social insurance agency according to the employer's declaration.

Endowment insurance is a social insurance system in which workers get certain economic compensation, material help and services from the government and society after reaching the legal retirement age.

State-owned enterprises, collective enterprises, foreign-invested enterprises, private enterprises and other urban enterprises and their employees, institutions and their employees who implement enterprise management must participate in the basic old-age insurance.

legal ground

People's Republic of China (PRC) social insurance law

Article 87 Where social insurance agencies, medical institutions, pharmaceutical trading entities and other social insurance service institutions defraud social insurance fund expenditures by means of fraud or forgery of certification materials, the social insurance administrative department shall order them to return the defrauded social insurance money and impose a fine of more than 2 times but less than 5 times the amount defrauded; If it belongs to a social insurance service institution, the service agreement shall be terminated; If the directly responsible person in charge and other directly responsible personnel are qualified, their qualifications shall be revoked according to law.