In 2020 in Sanming, Fujian, the amount deducted from individuals for social security depends on multiple factors such as the type of insurance and the individual's salary. Here's a breakdown by different types of social insurance:

1. Pension Insurance: For enterprise employees, the individual contribution rate is 8% of their salary. For example, if an employee's monthly salary is within the normal range (not exceeding the upper limit or being lower than the lower limit of the base), if the salary is 5000 yuan, the monthly pension insurance deduction is ​
   ×8%=
   yuan. In 2020, the upper limit of the pension insurance base was relatively high, and the lower limit was set according to relevant regulations to ensure the basic rights and interests of employees with lower incomes.

2. Medical Insurance: The individual contribution rate for medical insurance is 2% of the salary. Using the previous example of a 5000 - yuan salary, the monthly medical insurance deduction is ​
   ×2%=
   yuan. The medical insurance base also has upper and lower limits. If the salary is too high or too low, the base for calculation will be adjusted accordingly within the specified range.

3. Unemployment Insurance: The individual contribution rate for unemployment insurance is generally 0.5%. So for a 5000 - yuan salary, the monthly unemployment insurance deduction is ​
   ×0.5%=
   yuan. This insurance provides a certain level of economic security for employees in case of unemployment.

4. Work - related Injury Insurance and Maternity Insurance: Employees do not contribute to work - related injury insurance and maternity insurance. The work - related injury insurance premium is paid by the employer according to different industry risk levels, and the maternity insurance premium is also borne by the employer.

In general, to calculate the exact amount of social security deductions in Sanming in 2020, you need to know your salary and the specific upper and lower limits of the social security base in that year. If your salary is within the range of the base, you can calculate according to the above - mentioned contribution rates. If your salary exceeds the upper limit of the base, the calculation will be based on the upper limit; if it is lower than the lower limit, it will be calculated based on the lower limit.