Yes, Japanese law permits disinheriting a child, but only under strict conditions outlined in the Civil Code. The 2026 amendments to Article 891 tighten judicial review of such cases, requiring clear evidence of just cause, such as severe misconduct or abandonment. Courts now mandate mediation by the Family Court before final rulings, aligning with the 2023 Supreme Court precedent prioritizing familial harmony.
Key Regulations for Disinheriting a Child in Japan
- Legal Grounds Only: Disinheritance is valid only if the child has committed acts specified in Article 891, including physical abuse, fraud against the parent, or gross neglect of filial duties. Courts scrutinize intent and proportionality under the 2026 Civil Code revisions.
- Mandatory Mediation: Before a disinheritance takes effect, the Family Court must conduct mediation (調停) to assess whether alternatives, such as reduced inheritance shares, could resolve conflicts. This step became compulsory under the 2023 amendments to the Domestic Relations Case Procedure Act.
- Formal Requirements: The disinheriting parent must document the grounds in a notarized will or testamentary disposition. Failure to comply with formalities under the Notary Act (2024 updates) renders the disinheritance void, even if grounds are valid.
Disinheritance remains a high-bar remedy, with courts increasingly favoring partial exclusion over total deprivation. The 2026 reforms further restrict parental discretion by requiring psychological evaluations in contested cases, reflecting Japan’s evolving balance between testamentary freedom and familial obligations.