Supplementary Provisions, Article 12Payment of the Specified Additional Premium
第十二条（特定付加保険料の納付）
During the period until the day on which three years have elapsed from the item (vii) effective date (hereinafter referred to as the "specified additional premium payment deadline"), an insured person of National Pension or a person who was an insured person of National Pension (limited to a person who has a period during which that person became liable to pay the premium under the provisions of Article 87-2, paragraph (1) of the National Pension Act (hereinafter referred to in this Article and the following Article as the "additional premium"), and who, as a result of not paying the additional premium by the due date for payment, became subject to the application of the provisions of Article 87-2, paragraph (4) of the National Pension Act before the amendment under Article 1 of the Act Partially Amending the National Pension Act, etc. to Strengthen, etc. the Financial Basis and Minimum Guarantee Function of the Public Pension System (Act No. 62 of 2012) (hereinafter referred to in this paragraph as the "pre-2012 National Pension Act")) may, with the approval of the Minister of Health, Labour and Welfare, pay, for each month of a period, among that person’s insured periods as a category 1 insured person prescribed in Article 7, paragraph (1), item (i) of the National Pension Act (referred to as a "category 1 insured person" in Article 14, paragraph (1) of the Supplementary Provisions) (excluding a period specified by Cabinet Order), among the premium-paid periods other than the premium-paid period pertaining to the additional premium, the period during which that person would have become liable to pay the additional premium had the provisions of Article 87-2, paragraph (4) of the pre-2012 National Pension Act not been applied as a result of not paying the additional premium by the due date for payment (limited to a period within ten years before the month in which the day of approval falls; referred to as the "specified period eligible for additional premiums" in the following Article), a premium of National Pension in the amount equivalent to the additional premium for that month (hereinafter referred to as the "specified additional premium").
第七号施行日から起算して三年を経過する日（以下「特定付加保険料納付期限日」という。）までの間において、国民年金の被保険者又は被保険者であった者（国民年金法第八十七条の二第一項の規定による保険料（以下この条及び次条において「付加保険料」という。）を納付する者となった期間を有する者であって、付加保険料を納期限までに納付しなかったことにより公的年金制度の財政基盤及び最低保障機能の強化等のための国民年金法等の一部を改正する法律（平成二十四年法律第六十二号）第一条の規定による改正前の国民年金法（以下この項において「平成二十四年改正前国民年金法」という。）第八十七条の二第四項の規定の適用を受けたものに限る。）は、厚生労働大臣の承認を受け、その者の国民年金法第七条第一項第一号に規定する第一号被保険者（附則第十四条第一項において「第一号被保険者」という。）としての被保険者期間（政令で定める期間を除く。）であって、付加保険料に係る保険料納付済期間以外の保険料納付済期間のうち、付加保険料を納期限までに納付しなかったことによる平成二十四年改正前国民年金法第八十七条の二第四項の規定の適用をしなかったとしたならば付加保険料を納付する者となった期間（承認の日の属する月前十年以内の期間に限る。次条において「特定付加対象期間」という。）の各月につき、当該各月の付加保険料に相当する額の国民年金の保険料（以下「特定付加保険料」という。）を納付することができる。
Payment of the specified additional premium under the provisions of the preceding paragraph is to be made in order, beginning with the specified additional premium pertaining to the additional premium for the month that elapsed earliest.
When payment of the specified additional premium is made under the provisions of paragraph (1), the additional premium for the month to which the payment pertains is deemed to have been paid on the day the payment was made.
With regard to the application of the provisions of Article 43 of the National Pension Act in the case where a person entitled to receive an old-age basic pension under the National Pension Act (excluding a person who has a premium-paid period pertaining to the additional premium) has paid the specified additional premium under the provisions of paragraph (1), the term "acquired the right to receive an old-age basic pension" in that Article is deemed to be replaced with "paid the specified additional premium prescribed in Article 12, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. for Improving the Administration of Government-Administered Pension Programs, etc. (Act No. 64 of 2014) pursuant to the provisions of that paragraph".
When a person entitled to receive an additional pension under the National Pension Act (referred to as the "additional pension" in the following Article) has paid the specified additional premium under the provisions of paragraph (1), the pension amount is revised from the month following the month in which the day of payment falls; provided, however, that this does not apply where that person entitled to receive the benefit is a specified recipient prescribed in paragraph (1) of the following Article, and the number of months pertaining to that payment for which the additional premium is deemed to have been paid pursuant to the provisions of paragraph (3) is less than the number of months of the special additional premium-paid period prescribed in paragraph (1) of that Article.
Beyond what is provided for in the preceding paragraphs, the payment procedure for the specified additional premium and other necessary matters concerning payment of the specified additional premium are specified by Cabinet Order.