With respect to a person receiving payment of the allowance, the revision of the amount of the allowance in the case where the person newly comes to have a child in custody, etc. is made from the month following the month that includes the day on which the person made a claim for certification for the revised amount.
The provisions of paragraph (2) of the preceding Article apply mutatis mutandis to the revision under the preceding paragraph.
With respect to a person receiving payment of the allowance, the revision of the amount of the allowance in the case where the number of children in custody, etc. has decreased is made from the month following the month that includes the day of the decrease.
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)
child in custody, etc.machine translation
「監護等児童」
A child (児童) who meets the requirements of Article 4 and whom the father has custody of (監護) and shares a livelihood with, whom the mother has custody of, or whom a person raising the child (養育者) raises; where there are two or more, 10,750 yen a month is added to the basic amount (基本額) for each one after the first.
Short name set inArticle 5, paragraph (2)