Japan's Civil Code gives a surviving spouse a ranked statutory share -- 50% with children, two-thirds with parents, three-quarters with siblings, or the entire estate alone -- backed by an iryubun forced-heirship minimum for spouses, children, and parents (though not siblings); but this framework governs only Japan-situated assets, with property in India remaining governed entirely by ordinary Indian succession law.
Japan's ranked statutory shares
Japan's Civil Code sets out a ranked statutory inheritance system in which a surviving spouse always
inherits, with the specific share depending on which other relatives survive. Where children survive, the
spouse takes 50% and the children split the remaining 50% equally. Where there are no children but
parents or grandparents survive, the spouse takes two-thirds (67%) and they split the remaining
one-third. Where there are no children or parents but siblings survive, the spouse takes three-quarters
(75%) and the siblings split the remaining one-quarter. If the spouse is the sole survivor, they take the
entire estate.
The iryubun forced-heirship system
Beyond the default statutory shares that apply without a will, Japan's iryubun (遗疑分)
system reserves a legal minimum share that certain heirs are entitled to regardless of what a will
provides. Spouses, children (and their descendants by substitution), and lineal ascendants (parents,
grandparents) hold this reserved-portion right -- notably, siblings do not. The reserved portion is
generally one-half of the estate where a spouse, children, or both survive, and one-third where only
parents or grandparents survive as heirs. The iryubun functions as a monetary claim rather than a claim
to any specific asset, so an heir whose reserved portion was not respected in a will generally seeks
payment of the shortfall rather than reopening the distribution of specific property.
Why this framework does not touch assets located in India
Japan's succession law applies to assets situated in Japan; it has no bearing on immovable or movable
property located in India. For a Japan-based person of Indian origin (or an Indian citizen resident in
Japan) who dies owning property in India, the applicable Indian succession law depends on personal law
exactly as it would for anyone else -- the Hindu Succession Act, 1956 for Hindus, Sikhs, Jains and
Buddhists; Muslim personal law for Muslims; and the Indian Succession Act, 1925 for Christians, Parsis,
and those who die leaving a valid will governing testamentary succession generally. Heirs based in Japan
seeking to access a deceased relative's Indian bank accounts, securities, or movable assets typically
need a Succession Certificate from the relevant Indian court (or Letters of Administration/Probate where
a will exists), and can pursue this through a Power of Attorney authorizing a representative in India,
avoiding the need to travel to India for most stages of the process.
Common mistakes NRIs in Japan make with succession matters:
- Assuming Japan's own statutory shares or iryubun rule automatically govern assets located in
India -- they do not; Indian assets follow Indian succession law.
- Not realizing that different Indian succession laws can apply to different assets depending on
personal law and the presence or absence of a valid will.
- Delaying the Succession Certificate/Probate application, which can hold up access to Indian bank
accounts and securities for an extended period.
