Divorce- View allLast updated: 2026-03-13

Child Support in Japan: Calculation Guide and Court Tables

Key Takeaways

✓Child support is calculated using court tables based on both parents' income
✓Amounts vary significantly by children's age and number
✓Changes in income or remarriage can justify modification requests
✓Calculation methods differ between salaried and self-employed parents

Child Support Calculation Table

Published by the Supreme Court's Judicial Research Institute, last revised December 23, 2019. Uses the "standard calculation method" based on both parents' incomes and children's ages.

Life Cost Index

Age 0-14: 62
Age 15-19: 85
Adult (obligor): 100

Free Tools for This Area

Child Support Calculator

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Alimony Estimator

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This article provides general legal information and does not constitute legal advice. For specific legal issues, please consult with a qualified attorney.