Article 11-2Method of Calculating the Rate by Which the Amount Subject to Premium and Contribution Calculation Is Multiplied
第十一条の二(保険料・拠出金算定対象額に乗じる率の計算方法)
The rate by which the amount subject to premium and contribution calculation prescribed in Article 94-3, paragraph (1) of the Act is multiplied (hereinafter referred to as the "contribution apportionment rate") is the rate obtained by dividing the sum of the number listed in item (i) and the number listed in item (ii) by the number listed in item (iii).
法第九十四条の三第一項に規定する保険料・拠出金算定対象額に乗じる率(以下「拠出金按分率」という。)は、第一号に掲げる数と第二号に掲げる数とを合算した数を、第三号に掲げる数で除して得た率とする。
The number obtained by multiplying the total of the numbers of category 2 insured persons relating to the relevant government and implementing body on the last day of each month of the relevant fiscal year by the ratio, to the number of category 2 insured persons relating to the relevant government and implementing body on the last day of September of the relevant fiscal year, of the number of category 2 insured persons relating to the relevant government and implementing body on that same day who are persons prescribed in the following Article;
The number obtained by multiplying the number obtained by subtracting the total number of months of periods that became inconsistent periods prescribed in Article 9-4-2, paragraph (1) of the Supplementary Provisions of the Act in the relevant fiscal year from the sum of the total of the numbers of category 3 insured persons on the last day of each month of the relevant fiscal year and the total number of months of the insured periods as a category 3 insured person relating to the notifications (excluding those relating to a period on or after the day on which the notification was made, and those relating to a period that was made not to be counted as a premium-paid period under Article 7-3, paragraph (1) of the Supplementary Provisions of the Act (excluding a period that was made to be counted as a premium-paid period under paragraph (3) of that Article and Article 21, paragraph (2) of the Supplementary Provisions of the 2004 Amendment Act)) of persons for whom, in the relevant fiscal year, a notification under Article 12, paragraphs (5) through (8) of the Act, a notification under Article 7-3, paragraph (2) of the Supplementary Provisions of the Act, or a notification under Article 21, paragraph (1) of the Supplementary Provisions of the 2004 Amendment Act concerning having become a category 3 insured person was made, by the rate obtained by dividing the number of persons who are category 3 insured persons among the insured persons relating to the relevant government and implementing body on the last day of September of the relevant fiscal year by the number of category 3 insured persons on the same day;
当該年度の各月の末日における第三号被保険者の数の合計数と当該年度において第三号被保険者となつたことに関する法第十二条第五項から第八項までの規定による届出、法附則第七条の三第二項の規定による届出及び平成十六年改正法附則第二十一条第一項の規定による届出が行われた者の当該届出に係る第三号被保険者としての被保険者期間(当該届出が行われた日以後の期間に係るもの及び法附則第七条の三第一項の規定により保険料納付済期間に算入しないものとされた期間(同条第三項及び平成十六年改正法附則第二十一条第二項の規定により保険料納付済期間に算入するものとされた期間を除く。)に係るものを除く。)の総月数とを合算した数から当該年度において法附則第九条の四の二第一項に規定する不整合期間となつた期間の総月数を減じた数に、当該年度の九月末日における当該政府及び実施機関に係る被保険者のうち第三号被保険者である者の数を同日における第三号被保険者の数で除して得た率を乗じて得た数
The number obtained by combining the total of the numbers listed in the preceding two items calculated for each government and implementing body, the total number of months of premium-paid periods relating to premiums paid in the relevant fiscal year by category 1 insured persons or persons who were category 1 insured persons, the number of months equivalent to three-quarters of the total number of months of one-quarter premium exemption periods, the number of months equivalent to one-half of the total number of months of half premium exemption periods, and the number of months equivalent to one-quarter of the total number of months of three-quarter premium exemption periods, and the total number of months of premium-paid periods relating to premiums that have been made not required to be paid under Article 88-2 or Article 88-3, paragraph (1) or (2) of the Act.
Read this with the articles around it
2004 Amendment Actmachine translation
「平成十六年改正法」
Short name for the Act Partially Amending the National Pension Act, etc. (Act No. 104 of 2004).
Short name set inArticle 1-2, paragraph (1), item (i)
category 1 insured personmachine translation
「第一号被保険者」
A category 1 insured person as Article 7, paragraph (1), item (i) of the National Pension Act defines one, including here persons insured under Article 5, paragraph (1) of that Act's supplementary provisions (附則), Article 11, paragraph (1) of those of Act No. 95 of 1994, Article 23, paragraph (1) of those of Act No. 104 of 2004 and Article 40, paragraph (1) of those of Act No. 74 of 2025, and persons insured under the former Act (旧法).
Short name set inArticle 1-2, paragraph (1), item (iii), (a)
category 3 insured personmachine translation
「第三号被保険者」
A category 3 insured person as Article 7, paragraph (1), item (iii) of the National Pension Act defines one: a dependent spouse (被扶養配偶者) of a category 2 insured person (第二号被保険者) — one who mainly lives on that person's income and lives in Japan or is treated as based there — aged 20 to 59.
Short name set inArticle 1-2, paragraph (1), item (iv), (a)
relevant fiscal yearmachine translation
「当該年度」
In Article 6-2 and the provisions after it, the fiscal year that includes 1 April of the year in question; Article 6-2 counts a person's income from the amounts on which that fiscal year's prefectural inhabitant tax (道府県民税) is assessed.
Short name set inArticle 6-2, paragraph (1)
category 2 insured personmachine translation
「第二号被保険者」
A category 2 insured person as Article 7, paragraph (1), item (ii) of the National Pension Act defines one: a person insured under Employees' Pension Insurance (厚生年金保険).
Short name set inArticle 9, paragraph (1), item (i), (b)
contribution apportionment ratemachine translation
「拠出金按分率」
The rate, worked out each fiscal year for the government and each implementing body (実施機関), by which the amount subject to premium and contribution calculation (保険料・拠出金算定対象額) is multiplied under Article 94-3, paragraph (1) of the National Pension Act to give its basic pension contribution (基礎年金拠出金): its counts of category 2 and category 3 insured persons (第二号被保険者, 第三号被保険者), divided by the total of those counts for all bodies plus the months of premiums paid by category 1 insured persons (第一号被保険者), with partly exempted months weighted.
Short name set inArticle 11-2, paragraph (1)