How many months does Shanghai Social Security adjust its base every year?

Every July, the social security payment base will be adjusted, and the upper and lower limits of the new payment base will be determined according to the social wage of the previous year.

When the social security payment base is adjusted once a year, the Social Security Bureau will also require institutions to declare and adjust the payment base according to the average salary of employees in the previous year. The principle of adjustment is to get the new social security payment base of the year by taking the monthly average according to the total wage income of employees in the previous year.

After determining the social security payment base in July of that year, it will be implemented from July of that year to June of the following year.