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Family Register Act

戸籍法（こせきほう）

Amended by

Act on the Arrangement of Related Acts upon the Enforcement of the Act Partially Amending the Civil Code, etc.

民法等の一部を改正する法律の施行に伴う関係法律の整備等に関する法律

The whole text as amended, on e-Gov

The date on which the Act Partially Amending the Civil Code, etc. (Act No. 45 of 2026) comes into force. The exact day is not fixed yet.

The same amending law also changes

8 provisions changed · 4 provisions added · 3 provisions removed · 2 provisions in the supplementary provisions

Each provision the amendment changes, before and after in one: words it removes are struck through, words it adds are highlighted. The Japanese is the law; the icon beside each English column says whose English it is.

Article 31第三十一条

Read it in the amended law
  • ChangedArticle 31, paragraph (1)

    If the person who is required to submit a notification is a minor or adult ward, a person with parental authority over the relevant person or the relevant person's guardian guardian of the minor is the one who has the duty to submit the notification; provided, however, that this does not preclude a minor or adult ward from submitting the notification themselves.

    届出をすべき者が未成年者又は成年被後見人であるときは、親権を行う者又は未成年後見人を届出義務者とする。ただし、未成年者又は成年被後見人が届出をすることを妨げない。

  • ChangedArticle 31, paragraph (2)

    If athe person with parental authority or a guardian submitswho is required to submit a notification is a notification, they must enter person subject to a decision on the following particulars in disposition appointing a specified assistant, the written specified assistant may also submit the notification:.

    親権を行う者又は後見人が届出をする場合には、届書に次に掲げる事項を記載しなければならない届出をすべき者が特定補助人を付する処分の審判を受けた者であるときは、特定補助人も届出をすることができる。

  • RemovedArticle 31, paragraph (2), item (i)

    the name, date of birth, and registered domicile of the person who is required to submit the notification:

    届出をすべき者の氏名、出生の年月日及び本籍

  • RemovedArticle 31, paragraph (2), item (ii)

    the cause of the limitation of the relevant person's capacity to act; and

    行為能力の制限の原因

  • RemovedArticle 31, paragraph (2), item (iii)

    the fact that the notifying person has parental authority over the relevant person or is the relevant person's guardian.

    届出人が親権を行う者又は後見人である旨

  • AddedArticle 31, paragraph (3)

    If a person with parental authority, a guardian of a minor, or a specified assistant submits a notification, they must enter the following particulars in the written notification:

    親権を行う者、未成年後見人又は特定補助人が届出をする場合には、届書に次に掲げる事項を記載しなければならない。

  • AddedArticle 31, paragraph (3), item (i)

    the name, date of birth, and registered domicile of the person who is required to submit the notification:

    届出をすべき者の氏名、出生の年月日及び本籍

  • AddedArticle 31, paragraph (3), item (ii)

    the cause of the limitation of the relevant person's capacity to act; and

    行為能力の制限の原因

  • AddedArticle 31, paragraph (3), item (iii)

    the fact that the notifying person has parental authority over the relevant person or is the guardian of the minor or the specified assistant of the relevant person.

    届出人が親権を行う者、未成年後見人又は特定補助人である旨

Article 32第三十二条

Read it in the amended law
  • ChangedArticle 32, paragraph (1)

    With regard to any act that a minor or adult ward a person subject to a decision on the disposition appointing a specified assistant may perform without obtaining the consent of their statutory agent, the minor or adult wardthe person subject to a decision on the disposition appointing a specified assistant is to submit a notification themselves.

    未成年者又は成年被後見人特定補助人を付する処分の審判を受けた者がその法定代理人の同意を得ないですることができる行為については、未成年者又は成年被後見人特定補助人を付する処分の審判を受けた者が、これを届け出なければならない。

Chapter 4, Section 8第四章第八節

Read it in the amended law
  • ChangedChapter 4, Section 8

    Section 8 Parental Authority and Guardianship overof Minors

    第八節　親権及び未成年者の後見

Article 81第八十一条

Read it in the amended law
  • ChangedArticle 81, paragraph (1)

    A notification of the commencement of guardianship that will commence in the case prescribed in Article 838, item (i) of the Civil Code (referred to below as "guardianship over a minor") must be submitted by the guardian of a minor designated pursuant to the provisions of Article 839 of the Civil Code within ten days from the day on which they assumed the role of guardian.

    民法第八百三十八条第一号に規定する場合に開始する後見（以下「未成年者の後見」という。）後見の開始の届出は、同民法第八百三十九条の規定による指定をされた未成年後見人が、その就職の日から十日以内に、これをしなければならない。

  • ChangedArticle 81, paragraph (2), item (i)

    the cause and date of the commencement of guardianship of a minor; and

    後見未成年後見の開始の原因及び年月日

Article 84第八十四条

Read it in the amended law
  • ChangedArticle 84, paragraph (1)

    A notification of the termination of guardianship overof a minor must be submitted by the guardian of the minor within ten days. The cause and date of the termination of their guardianship overof the minor must be entered in the written notification.

    未成年者の後見の終了の届出は、未成年後見人が、十日以内に、これをしなければならない。その届書には、未成年者の後見の終了の原因及び年月日を記載しなければならない。

Article 87第八十七条

Read it in the amended law
  • ChangedArticle 87, paragraph (2)

    A notification of death may also be submitted by a relative other than cohabiting relatives, and may be made by the guardian, curator of a minor, assistant, voluntary guardian, and mandatory of voluntary guardianship of the deceased person and by a person whom the deceased person designated in a notarial deed as a person who may request a decision for commencement of assistance or a decision for commencement of voluntary guardianship.

    死亡の届出は、同居の親族以外の親族、未成年後見人、保佐人、補助人、任意後見人及び、任意後見受任者及び補助開始の審判又は任意後見開始の審判を請求することができる者として公正証書によつて本人の指定した者も、これをすることができる。

2 changes in the supplementary provisions (附則)

Supplementary Provisions, Article 2 · Transitional Measures Concerning Adult Wards, etc.附則第二条（成年被後見人等に関する経過措置）

Read it in the amended law
  • AddedSupplementary Provisions, Article 2, paragraph (1)

    With regard to the adult wards, guardians of adults and supervisors of guardians of adults prescribed in Article 2, paragraph (1) of the Supplementary Provisions of the Civil Code, etc. Amendment Act in respect of whom the provisions then in force continue to govern pursuant to the provisions of that paragraph, and the persons under curatorship, curators and supervisors of curators prescribed in Article 3, paragraph (1) of the Supplementary Provisions of the Civil Code, etc. Amendment Act in respect of whom the provisions then in force continue to govern pursuant to the provisions of that paragraph, the provisions then in force continue to govern, notwithstanding the provisions of the respective Acts as amended by this Act (including as applied mutatis mutandis pursuant to other Acts).

    民法等改正法附則第二条第一項の規定によりなお従前の例によることとされる同項に規定する成年被後見人、成年後見人及び成年後見監督人並びに民法等改正法附則第三条第一項の規定によりなお従前の例によることとされる同項に規定する被保佐人、保佐人及び保佐監督人については、この法律による改正後のそれぞれの法律の規定（これらの規定を他の法律において準用する場合を含む。）にかかわらず、なお従前の例による。

Supplementary Provisions, Article 4 · Transitional Measures Concerning Penal Provisions附則第四条（罰則に関する経過措置）

Read it in the amended law
  • AddedSupplementary Provisions, Article 4, paragraph (1)

    With regard to the application of penal provisions to acts committed before this Act comes into effect and to acts committed after this Act comes into effect in the cases where the provisions then in force continue to govern pursuant to the provisions of Article 2, paragraph (1) or Article 3, paragraph (1) of the Supplementary Provisions of the Civil Code, etc. Amendment Act, the provisions then in force continue to govern.

    この法律の施行前にした行為及び民法等改正法附則第二条第一項又は第三条第一項の規定によりなお従前の例によることとされる場合におけるこの法律の施行後にした行為に対する罰則の適用については、なお従前の例による。