How to decide social premiums of Japan
At first let me explain how to decide social insurance premiums of Japan.
Monthly insurance contributions are determined according to the salary amount of insured person and are to be equally shouldered by employer and the insured person.
Insurance contributions are also collected from bonus.
The calculation of insurance premium is to multiply the monthly standard remuneration by contribution rate.
Monthly standard remuneration is determined on the average of the salary of April, May and June. If there is no big change, this is applied for one year. In other word it means the premium does not change.
Company submits social insurance premium assessment basis forms to Pension Office in July.
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