Who owns what in a marriage in Japan?
In Japan each spouse owns what is in their name, and on divorce one can ask for a division of the property acquired during the marriage, generally in equal shares.
Updated October 2026. Spotted a mistake? Tell us.
What applies by default
Property in one spouse's name is theirs, and property of unclear ownership is presumed to be shared. There is no automatic joint ownership.
When the marriage ends in divorce
A spouse may request a division of the property built up during the marriage, and courts usually apply equal shares as a starting point.
A marriage contract
A marriage property contract must be registered before the marriage to bind third parties, and it is rarely used.
What stays your own, and gifts
Property from before the marriage and inheritances are generally outside the division.
If one spouse is a foreigner
Japan has its own rules on which country's law applies to the marital property of foreigners.
Understand the legal system first
Japan belongs to the Civil law family. Family law grows out of the legal tradition, so it helps to know how the system works.
Read the Japan legal-system profile in the Legal Families Atlas →
Can a foreigner buy property in Japan? →
Official sources
Take it further
The family and property rules of a European country in one PDF, with questions for a local lawyer.
Set the property rules before the marriage, in your own terms.
For couples who live together without marrying.
Marriage, divorce, custody and support, step by step.
Divide property and settle the terms in writing.
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TheLawToKnow Tools’s marital property guide is an educational overview of general rules. It is not legal advice, and it does not replace the official source or a lawyer in the country. Report a mistake.
