Inheritance Calculator
The Quran distributes an estate in three verses: 4:11 (children and parents), 4:12 (spouses and the "loner's" siblings), and 4:176 (siblings of one who leaves no children) - always after fulfilling any will and after paying off all debts, a condition God repeats three times. Enter the inheritors below, and the calculator applies those verses with the proportional method explained in Inheritance Numbers Don't Add Up? - the fractions are ratios between inheritors, so every ratio is honored and 100% of the estate is distributed, every time.
[4:11] GOD decrees a will for the benefit of your children; the male gets twice the share of the female. If the inheritors are only women, more than two, they get two-thirds of what is bequeathed. If only one daughter is left, she gets one-half. The parents of the deceased get one-sixth of the inheritance each, if the deceased has left any children. If he left no children, and his parents are the only inheritors, the mother gets one-third. If he has siblings, then the mother gets one-sixth. All this, after fulfilling any will the deceased has left, and after paying off all debts...
How the Division Works
When sons (or brothers, or a father without co-existing children) inherit, the Quran assigns them no fixed fraction - they receive what remains after the fixed shares, at two units per male and one per female (4:11, 4:176). When every inheritor holds a fixed fraction, the fractions act as ratios: the estate divides into as many equal shares as the numerators sum to, over their common denominator. In the famous case of a wife, three daughters, and both parents, the fractions total 27/24 - so the estate divides into 27 shares of which the daughters take 16, each parent 4, and the wife 3. Every prescribed ratio holds exactly, and nothing is left over or missing.
The first instrument of Quranic inheritance remains the will: [2:180] It is decreed that when death approaches, you shall write a will for the benefit of the parents and relatives, equitably. This is a duty upon the righteous. Rashad Khalifa's footnote on 4:11 notes that the statutory shares fit the general case - the son responsible for a family, the daughter provided for by a husband - and that the will exists precisely to conform the division to specific circumstances, such as leaving a poor daughter more than a rich son.
This calculator is an educational aid applying 4:11, 4:12, and 4:176 as rendered in Quran: The Final Testament. Wills, debts, and family specifics come first - read the verses and the linked article, and consult those entitled before dividing an actual estate.