What a Husband or Wife Inherits in Islam

Among all the heirs in Islamic inheritance, the spouse occupies a uniquely secure place. A husband or wife is named directly in the Qurʾān, receives a fixed fraction that is fixed before anyone else's residue is calculated, and — unlike many relatives — can never be blocked out of the estate entirely. Yet the exact share shifts depending on one decisive fact: whether the deceased left behind a child or grandchild. This article sets out precisely how much a husband or wife inherits, why the number changes, and how the rule works when there is more than one wife.

The spouse is a fixed-share (furūḍ) heir

Heirs in Islam fall into categories. Most prominent are the aṣḥāb al-furūḍ, the fixed-share heirs whose portions the Qurʾān states as exact fractions. The spouse belongs firmly to this group, and the relevant verse is Sūrat al-Nisāʾ 4:12:

"And for you is half of what your wives leave if they have no child. But if they have a child, for you is a fourth of what they leave… And for the wives is a fourth of what you leave if you have no child. But if you have a child, for them is an eighth of what you leave."— Qurʾān, Sūrat al-Nisāʾ (4:12)

Two consequences follow from the spouse being a named fixed-share heir. First, a husband or wife is never blocked (maḥjūb) from inheriting — no other relative, however close, can remove the spouse's right. Second, the spouse never inherits as a residuary (ʿaṣaba); they take their stated fraction and nothing more, even when they are the closest surviving relative. The spouse's portion is always a clean fraction of the estate, never a leftover.

The husband's share: one-half or one-quarter

A surviving husband takes one of two fractions of his late wife's net estate:

• One-half (1/2) if she left no descendant — no child and no son's child.
• One-quarter (1/4) if she left a descendant.

So if a woman dies leaving a husband and, say, her parents but no children, the husband's share is half the estate. The moment a child or grandchild through a son enters the picture, his share halves to a quarter, and the freed portion flows to the children and other heirs.

The wife's share: one-quarter or one-eighth

A surviving wife mirrors the husband at exactly half his rate:

• One-quarter (1/4) if her late husband left no descendant.
• One-eighth (1/8) if he left a descendant.

The wife's fraction is always half what a husband would receive in the parallel situation — a structural feature of the Qurʾānic shares, reflecting the broader scheme in which men generally carry heavier financial obligations toward the household.

What counts as a "descendant"?

Because the entire husband/wife distinction turns on the word "descendant," it pays to be precise. In this context a descendant means the deceased's child (son or daughter) or a son's child (a grandchild through a son), of either gender. It does not matter whether that child came from the surviving spouse or from an earlier marriage — a stepchild who is the deceased's own biological or legitimate child still triggers the reduction. A grandchild through a daughter, however, is generally not counted as a blocking descendant for this rule, since the inheritance line runs through the male issue.

The share is taken from the net estate

The spouse's fraction is never calculated on the gross wealth. It is applied to the net estate — what remains after three prior claims are settled: funeral and burial costs, the deceased's outstanding debts, and any valid bequest (waṣiyya), which itself is capped at one-third. Only once those obligations are cleared does the husband's half, or the wife's eighth, attach to the remainder.

The spouse and the surplus (radd)

Sometimes the fixed shares add up to less than the whole estate, and there is no residuary heir to absorb what is left over. The doctrine of radd ("return") then sends the surplus back to the fixed-share heirs in proportion to their shares. Here the spouse is the notable exception: in the majority view, the surplus is not returned to the husband or wife. The other fixed-share heirs (a mother, a daughter, and so on) share the leftover, while the spouse keeps only the original stated fraction.

This raises a sharp question: what if the spouse is the only heir? On the classical majority position, the surplus is still not given to the spouse by way of radd; it passes instead to the public treasury (bayt al-māl). Some contemporary authorities differ, holding that in the absence of any other heir or a functioning treasury the surplus may return to the sole surviving spouse. Scholars differ on this point, so a real case of this kind should be referred to a qualified scholar. Our companion article on ʿawl and radd works through the mechanics in detail.

Worked examples

Example A — a wife with children

A man dies leaving a wife, one son, and one daughter. Because he left descendants, the wife takes 1/8. The remaining 7/8 passes to the children as residuaries, split two-to-one between son and daughter. The son therefore receives 7/12 of the estate and the daughter 7/24, with the wife's 1/8 (that is, 3/24) completing the whole.

Example B — a husband with no children

A woman dies leaving a husband and no descendants. The husband takes 1/2 of the estate. The remaining half goes to her other heirs — for example her parents or siblings — according to their own fixed shares and residue. If she truly left no other eligible heir at all, that remaining half passes to the public treasury.

Barriers and special situations

A few cases sever or qualify the spousal right. A non-Muslim spouse does not inherit from a Muslim spouse, because difference of religion is a recognised barrier to inheritance (and the reverse holds too). An irrevocably divorced spouse — once the ʿidda (waiting period) has fully elapsed — no longer inherits, since the marriage tie has ended; during a revocable divorce within the ʿidda, however, mutual inheritance still stands. By contrast, a widow who is pregnant does inherit, and the distribution is held so that the unborn child's share is reserved until birth, after which the final figures are settled.

To see these fractions applied to your own situation — including the daughters' two-to-one split, blocking rules, and the surplus — read our detailed pieces on what daughters inherit and on ʿawl and radd, or work straight through the full inheritance guide.