I received a payment notice for late payment of National Health Insurance, what is it? Also, how is it calculated?

If you do not pay the premium by the deadline, we will send you a reminder letter, but the arrearages will be added when the premium is paid after the designated deadline of the reminder letter . However, if the premium on the delivery date is less than 2,000 yen, no arrears will be added. The amount of the arrearages is determined according to the date on which the premium was paid from the day after the designated deadline of the dunning letter, and the payment of the arrearages is sent to you in order to pay the confirmed arrearages is.
The calculation of arrearages is as follows.
Premium amount x annual rate (*) x Number of days from the day after the specified deadline for the dunning letter to the payment date ÷ 365 days
※Of the period from the day after the designated deadline to the payment date, 14.6% before December 31, 2013, and after January 1, 2014, the exceptional standard ratio (Note) + 7.3%.
(Note) The exceptional base ratio is the ratio obtained by adding 1.0% to the annual average of the average loan commitment rate (new and short-term) of domestic banks. If the delinquent amount is less than 1,000 yen, the entire amount is not calculated, and if there is a fractional amount less than 100 yen, the fractional amount is not calculated.
Click here for the percentage of arrears.
Percentage of delinquent money

Please contact Insurance and Pension Division National Health Insurance Section in your ward.
Contact information