Every year, the implementing organization decides an insured's standardized monthly amount of remuneration based on the insured's amount of monthly remuneration, which is calculated by dividing the total remuneration which the insured receives during a three-month period prior to July 1 in the year in question at the place of business where the insured is actually employed as of that date by the number of months in that period (the period mentioned above is limited to a period during which the insured was continuously employed at the place of business; and, if there is any month which has fewer than seventeen days (or fewer than eleven days, for a person as specified by Order of the Ministry of Health, Labour and Welfare; the same applies for Article 23, paragraph (1), Article 23-2, paragraph (1) and Article 23-3, paragraph (1)) which forms the basis for the remuneration of remuneration, that month is excluded from the abovementioned period).
実施機関は、被保険者が毎年七月一日現に使用される事業所において同日前三月間（その事業所で継続して使用された期間に限るものとし、かつ、報酬支払の基礎となつた日数が十七日（厚生労働省令で定める者にあつては、十一日。第二十三条第一項、第二十三条の二第一項及び第二十三条の三第一項において同じ。）未満である月があるときは、その月を除く。）に受けた報酬の総額をその期間の月数で除して得た額を報酬月額として、標準報酬月額を決定する。
The standardized monthly amount of remuneration decided upon pursuant to the provisions of the preceding paragraph is the standardized monthly amount of remuneration for each month from September of that year to August of the next year.
前項の規定によつて決定された標準報酬月額は、その年の九月から翌年の八月までの各月の標準報酬月額とする。
The provisions of paragraph (1) do not apply to a person who has acquired the status of an insured between June 1 and July 1, nor to those a person whose standardized monthly amount of remuneration is or will be revised in any month between July and September pursuant to the provisions of Article 23, Article 23-2 or Article 23-3, but only in the year in question.