Can I deduct the basic salary when the social security goes up?

I can't. Social security expenses are borne by both the employer and the employee, and are calculated according to the employee's salary base, not the basic salary. The basic salary generally refers to the minimum guarantee standard of employees' basic salary, and the basic salary will not be deducted directly from the calculation of social security expenses. The specific deduction method and proportion of social insurance fees will vary according to local laws, regulations, policies and company policies. Social security expenses will be deducted according to different proportions of the employee's salary base and included in the employee's total salary.