Why is the calculation of the National Health Insurance premium based on the income situation of the previous year?

Unlike the workplace employee health insurance, which is calculated based on the amount of salary, etc., the National Health Insurance premium is calculated based on income from the previous year's income.

In Yokohama City, based on Article 29-7, Paragraph 2, Item 4 of the National Health Insurance Law Enforcement Ordinance, the income percent of insurance premiums is calculated based on the standard gross income amount (basic deduction of 330,000 yen from income during the previous year) ) ”, and the premium for the current fiscal year is calculated from this“ base gross income amount ”.

In addition, if the income situation this year has decreased significantly compared to the previous year and it is deemed difficult to pay the full premium for the current fiscal year, you may be entitled to a reduction in insurance premiums based on your application.

For more information, please contact Insurance and Pension Division National Health Insurance Section (27th window on the 2nd floor).

Responsible:
Insurance and Pension Division National Health Insurance Section (2nd floor, 27th)
Phone: 045-540-2350 FAX: 045-540-2355