Can the social security payment base be adjusted at any time?

You can't. The adjustment of the social security payment base will not be synchronized with the wages of employees, nor can it be adjusted at any time. Under normal circumstances, the employee's social security contribution base is adjusted once a year, and the regulations in different regions are different. Generally, it is in April or July of each year, that is to say, after the employee's salary rises, it will not be raised until around July of the following year, depending on the local regulations. The social security payment base is mainly determined according to the average monthly salary of employees in the previous year. The unit can only apply for adjustment after reporting the social security base to the social security department. If it is found that the social security payment base is wrong, it will be adjusted after being reported by the employer.