The law as Act Partially Amending the National Pension Act, etc., and Other Matters, to Strengthen the Functions of the Pension System in Light of Socioeconomic Changes (Act No. 74 of 2025) leaves it, with the words it changes marked.
The main text is read a page at a time: a chapter to a page, and a long chapter in runs of articles. The whole main text, and the supplementary provisions and appended tables this amendment changes. Those it leaves untouched are on the page for the text in force.
Article 23第二十三条
Collection of Wrongful Gain(不正利得の徴収)
Article 23, paragraph (1)
When there is a person who has received a benefit by deception or other wrongful means, the Minister of Health, Labour and Welfare may collect from that person the whole or part of an amount equivalent to the amount received.
The right to receive a benefit may not be transferred, provided as security, or seized. However, this does not apply to a case where the right to receive an old-age basic pension or an additional pension is seized by a disposition for national tax arrears (including a disposition governed by the same rules).
Taxes and other public charges may not be imposed based on money received as a benefit. However, this does not apply to an old-age basic pension and an additional pension.
An old-age basic pension is paid to a person who has a premium-paid period or a premium exemption period (excluding one relating to a premium that a person has been made not required to pay under the provisions of Article 90-3, paragraph (1)), when that person reaches 65 years of age. However, this does not apply when the period obtained by combining that person's premium-paid period and premium exemption period is less than 10 years.
The amount of the old-age basic pension is the amount obtained by multiplying 780,900 yen by the revision rate (meaning the rate set under the provisions of paragraph (1) of the following Article and revised under the provisions of that Article (excluding paragraph (1)) through Article 27-5; the same applies hereinafter) (if a fraction of less than 50 yen arises in that amount, it is to be rounded down, and if a fraction of 50 yen or more but less than 100 yen arises, it is to be rounded up to 100 yen). However, when paid to a person whose number of months of premium-paid periods is less than 480, the amount is the amount obtained by multiplying that amount by the number obtained by dividing the number of months obtained by combining the numbers of months listed in the following items (480 being the maximum) by 480.
A number of months corresponding to seven-eighths of the number of months of the one-quarter premium exemption period (the number of months obtained by deducting the number of months of premium-paid periods from 480 being the maximum);
A number of months corresponding to three-eighths of the number of months obtained by deducting, from the number of months of the one-quarter premium exemption period, the number of months of the one-quarter premium exemption period prescribed in the preceding item.
A number of months corresponding to three-quarters of the number of months of half premium exemption periods (the number of months obtained by deducting, from 480, the number of months obtained by combining the number of months of premium-paid periods and the number of months of the one-quarter premium exemption period, being the maximum);
A number of months corresponding to one-quarter of the number of months obtained by deducting, from the number of months of half premium exemption periods, the number of months of half premium exemption periods prescribed in the preceding item;
A number of months corresponding to five-eighths of the number of months of the three-quarter premium exemption period (the number of months obtained by deducting, from 480, the number of months obtained by combining the number of months of premium-paid periods, the number of months of the one-quarter premium exemption period, and the number of months of half premium exemption periods, being the maximum);
A number of months corresponding to one-eighth of the number of months obtained by deducting, from the number of months of the three-quarter premium exemption period, the number of months of the three-quarter premium exemption period prescribed in the preceding item;
Article 27, paragraph (1), item (viii)(年金額)Amount of the PensionChanged
A number of months corresponding to one-half of the number of months of the full premium exemption period (excluding one relating to a premium that a person has been made not required to pay under the provisions of Article 90-3, paragraph (1); the same applies in Article 27-6, paragraph (2), item (v)) (the number of months obtained by deducting, from 480, the number of months obtained by combining the number of months of premium-paid periods, the number of months of the one-quarter premium exemption period, the number of months of half premium exemption periods, and the number of months of the three-quarter premium exemption period, being the maximum).
The revision rate is revised each fiscal year based on the rate obtained by multiplying the rate listed in item (i) (hereinafter referred to as the "price change rate") by the rates listed in item (ii) and item (iii) (hereinafter referred to as the "nominal net wage change rate"), and is applied to a benefit that is a pension from April of that fiscal year onward.
The ratio of the price index for the year preceding the year in which the first day of that fiscal year falls, to the price index for the year two years before the year in which the first day of that fiscal year falls (meaning the annual average national consumer price index prepared by the Ministry of Internal Affairs and Communications; the same applies hereinafter);
A rate that is the cube root of the rate obtained by dividing the rate set forth in (a) by the rate set forth in (b);
イに掲げる率をロに掲げる率で除して得た率の三乗根となる率
Article 27-2, paragraph (2), item (ii), (a)
The ratio of the average standardized amount of remuneration for insureds relating to insured persons of Employees' Pension Insurance in the fiscal year two years before that fiscal year, to the average standardized amount of remuneration for insureds relating to insured persons of Employees' Pension Insurance in the fiscal year in which April 1 of the year five years before the year in which the first day of that fiscal year falls, falls (meaning the average standardized amount of remuneration for insureds prescribed in Article 43-2, paragraph (1), item (ii), (a) of the Employees' Pension Insurance Act; the same applies in this item and in Article 87, paragraph (5), item (ii), (a));
The ratio of the price index for the year two years before the year in which the first day of that fiscal year falls, to the price index for the year five years before the year in which the first day of that fiscal year falls.
The rate obtained by dividing the rate set forth in (a) by the rate set forth in (b).
イに掲げる率をロに掲げる率で除して得た率
Article 27-2, paragraph (2), item (iii), (a)
The rate obtained by deducting, from 0.910, a rate equivalent to one-half of the premium rate under the provisions of the Employees' Pension Insurance Act (hereinafter referred to as the "premium rate") as of September 1 of the year three years before the year in which the first day of that fiscal year falls;
The rate obtained by deducting, from 0.910, a rate equivalent to one-half of the premium rate as of September 1 of the year four years before the year in which the first day of that fiscal year falls.
The measures for revising the revision rate under the provisions of the preceding paragraph are specified by Cabinet Order.
前項の規定による改定率の改定の措置は、政令で定める。
Article 27-3第二十七条の三
Article 27-3, paragraph (1)
With respect to the revision of the revision rate that applies from and after the fiscal year in which April 1 of the year three years after the year in which the first day of the fiscal year in which the person entitled to receive the benefit reached 65 years of age falls, falls (referred to as the "base fiscal year" in Article 27-5, paragraph (1), item (ii) and paragraph (3), item (i)) (hereinafter referred to as the "revision rate from the base fiscal year"), the price change rate (or, when the price change rate exceeds the nominal net wage change rate, the nominal net wage change rate) is, notwithstanding the provisions of the preceding Article, taken as the basis.
The measures for revising the revision rate from the base fiscal year under the provisions of the preceding paragraph are specified by Cabinet Order.
前項の規定による基準年度以後改定率の改定の措置は、政令で定める。
Article 27-4第二十七条の四
Special Provisions for the Revision of the Revision Rate during the Adjustment Period(調整期間における改定率の改定の特例)
Article 27-4, paragraph (1)
With respect to the revision of the revision rate during the adjustment period, notwithstanding the provisions of the preceding two Articles, the rate obtained by multiplying the nominal net wage change rate by the rate obtained by multiplying the adjustment rate (meaning the rate obtained by multiplying the rate listed in item (i) by the rate listed in item (ii) (or, when that rate exceeds 1, 1); the same applies hereinafter) by the special adjustment rate for the fiscal year preceding that fiscal year (or, when that rate is less than 1, 1; referred to as the "calculated rate" in paragraph (3), item (ii)) is taken as the basis.
A rate that is the cube root of the ratio of the total number of public pension insured persons in the fiscal year two years before that fiscal year, to the number calculated, as specified by Cabinet Order, as the total number of insured persons of public pensions (meaning an insured person of this Act or the Employees' Pension Insurance Act) in the fiscal year in which April 1 of the year five years before the year in which the first day of that fiscal year falls, falls (hereinafter referred to as the "total number of public pension insured persons");
With respect to the revision of the revision rate during the adjustment period in a case where the nominal net wage change rate is less than 1, notwithstanding the provisions of the preceding paragraph, the nominal net wage change rate is taken as the basis.
The special adjustment rate in paragraph (1) means the rate set under the provisions of item (i) and revised under the provisions of item (ii).
第一項の特別調整率とは、第一号の規定により設定し、第二号の規定により改定した率をいう。
Article 27-4, paragraph (3), item (i)
The special adjustment rate in fiscal year 2017 is 1;
平成二十九年度における特別調整率は、一とする。
Article 27-4, paragraph (3), item (ii)
The special adjustment rate is revised each fiscal year based on the rate obtained by dividing the rate obtained by multiplying the nominal net wage change rate by the adjustment rate, by the calculated rate (or, when the nominal net wage change rate is less than 1, the adjustment rate).
The measures for revising the revision rate under the provisions of the preceding three paragraphs are specified by Cabinet Order.
前三項の規定による改定率の改定の措置は、政令で定める。
Article 27-5第二十七条の五
Article 27-5, paragraph (1)
With respect to the revision of the revision rate from the base fiscal year during the adjustment period, notwithstanding the provisions of the preceding Article, the rate obtained by multiplying the rate listed in item (i) by the rate listed in item (ii) (or, when that rate is less than 1, 1; referred to as the "calculated rate from the base fiscal year" in paragraph (3), item (i), (b)) is taken as the basis.
The price change rate (or, when the price change rate exceeds the nominal net wage change rate, the nominal net wage change rate);
物価変動率(物価変動率が名目手取り賃金変動率を上回るときは、名目手取り賃金変動率)
Article 27-5, paragraph (1), item (ii)
The rate obtained by multiplying the adjustment rate by the special adjustment rate from the base fiscal year for the fiscal year preceding that fiscal year (or, where that fiscal year is the base fiscal year, the special adjustment rate prescribed in paragraph (3) of the preceding Article for the fiscal year preceding that fiscal year).
With respect to the revision of the revision rate from the base fiscal year during the adjustment period in a case listed in the following items, notwithstanding the provisions of the preceding paragraph, the rate specified in the relevant item is taken as the basis.
Where the price change rate is less than 1 (excluding a case listed in the following item): the price change rate;
物価変動率が一を下回るとき(次号に掲げる場合を除く。) 物価変動率
Article 27-5, paragraph (2), item (ii)
Where the price change rate exceeds the nominal net wage change rate, and the nominal net wage change rate is less than 1: the nominal net wage change rate.
The special adjustment rate from the base fiscal year in paragraph (1) means the rate set under the provisions of item (i) and revised under the provisions of item (ii).
第一項の基準年度以後特別調整率とは、第一号の規定により設定し、第二号の規定により改定した率をいう。
Article 27-5, paragraph (3), item (i)
The special adjustment rate from the base fiscal year in the base fiscal year is the rate obtained by multiplying the rate set forth in (a) by the rate set forth in (b);
基準年度における基準年度以後特別調整率は、イに掲げる率にロに掲げる率を乗じて得た率とする。
Article 27-5, paragraph (3), item (i), (a)
The special adjustment rate prescribed in paragraph (3) of the preceding Article for the fiscal year preceding the base fiscal year;
基準年度の前年度の前条第三項に規定する特別調整率
Article 27-5, paragraph (3), item (i), (b)
The rate obtained by dividing the rate obtained by multiplying the price change rate (or, when the price change rate exceeds the nominal net wage change rate, the nominal net wage change rate) by the adjustment rate, by the calculated rate from the base fiscal year (or, when the price change rate or the nominal net wage change rate is less than 1, the adjustment rate).
The special adjustment rate from the base fiscal year is revised each fiscal year based on the rate set forth in (b) of the preceding item.
基準年度以後特別調整率については、毎年度、前号ロに掲げる率を基準として改定する。
Article 27-5, paragraph (4)
The measures for revising the revision rate from the base fiscal year under the provisions of the preceding three paragraphs are specified by Cabinet Order.