What is the basic cost before adjustment?

What is the basic cost before adjustment? The answer is: the pre-adjustment payment base. Generally, there are base adjustment fees for housing provident fund and social security. For example, how is the annual payment base of social security determined? Mainly determined according to the average monthly salary of the society in the previous year. The social average monthly salary is recalculated every year, so the Social Security Bureau will adjust the social security base in April or July of that year according to the social average monthly salary of the previous year. After the base is adjusted, it needs to be paid according to the new base, and some cities will also require the difference to be paid in advance. But once the base number is determined, it will remain unchanged for one year.