With respect to the basic amount, when the annual average national consumer price index compiled by the Ministry of Internal Affairs and Communications (hereinafter referred to as the "price index") comes to exceed or fall below the price index of 1993 (where a measure to revise the basic amount under this paragraph has been taken, the year preceding the year in which the most recent such measure was taken), the basic amount on or after April of the following year is revised on the basis of the ratio of that rise or fall.
基本額については、総務省において作成する年平均の全国消費者物価指数（以下「物価指数」という。）が平成五年（この項の規定による基本額の改定の措置が講じられたときは、直近の当該措置が講じられた年の前年）の物価指数を超え、又は下るに至つた場合においては、その上昇し、又は低下した比率を基準として、その翌年の四月以降の基本額を改定する。
The provisions of the preceding paragraph apply mutatis mutandis to the amount added to the basic amount under paragraph (2) of the preceding Article. In this case, the term "1993" in the preceding paragraph is deemed to be replaced with "2023".
The measures for revising the amount of the allowance under the provisions of the preceding two paragraphs are specified by Cabinet Order.
Read this with the articles around it
allowancemachine translation
「手当」
Short for the Child Rearing Allowance (児童扶養手当), which the prefectural governor, etc. (都道府県知事等) pays to the mother who has custody (監護) of, or the father who has custody of and shares a livelihood with, a child whose parents have divorced or whose other parent has died, has a disability of the degree a Cabinet Order (政令) sets, is missing or is in a similar situation, or to another person raising the child (養育者).
Short name set inArticle 4, paragraph (1)
basic amountmachine translation
「基本額」
In Article 5-2, paragraphs (1) and (2), the monthly amount of the allowance that Article 5, paragraph (1) sets — 41,100 yen — before the extra amount for each child after the first is added; it is revised by the rise or fall of the price index (物価指数).
Short name set inArticle 5, paragraph (2)· applies only in this provision and in Article 5-2, paragraphs (1) and (2)
price indexmachine translation
「物価指数」
The national consumer price index (全国消費者物価指数) compiled by the Ministry of Internal Affairs and Communications (総務省), as an average for the year, by whose rise or fall the basic amount (基本額) of the allowance is revised from the following April.
Short name set inArticle 5-2, paragraph (1)