Sri Lanka Faraid (Islamic Inheritance) Calculator

When a Sri Lankan Muslim dies without a will, the estate is divided under Muslim law per the Muslim Intestate Succession Ordinance No. 10 of 1931. First the estate is made “net” — funeral expenses, debts and any bequest (wasiyya, capped at one-third) are removed. This calculator starts from that net figure and applies the fixed shares set out in the Qur'an, Surah An-Nisa 4:11–12 and 4:176.

1. Assign fixed shares (fard). A husband takes 1/4 with children or 1/2 without; a wife (collectively) takes 1/8 with children or 1/4 without. A mother takes 1/6 when a child is present, otherwise 1/3. A father takes a fixed 1/6 whenever a child is present. A daughter with no brother takes 1/2 alone, or 2/3 shared between two or more daughters.
2. Distribute the residue (asaba).Whatever remains after fixed shares goes to the residuary heirs. If a son exists, the sons and daughters take the residue with each son receiving twice a daughter's share (the 2:1 rule of Qur'an 4:11), and the daughters take no separate fixed share. If there is no son but a father, the father takes his 1/6 plus the residue.
3. Apply awl if shares over-subscribe. If the fixed shares total more than the whole estate (for example 13/12), every share is scaled down by raising the common denominator to the sum of the numerators. No residue is distributed.
4. Apply radd if a surplus is left. If the fixed shares total less than the estate and there is no residuary heir, the surplus is returned to the sharers in proportion — excluding any spouse, who never takes radd.
5. Handle the Umariyyatayn case.When only a spouse and both parents survive, the mother takes 1/3 of the remainder after the spouse's share rather than 1/3 of the whole, and the father takes the rest.
6. Convert to rupees and reconcile.Each final fraction is multiplied by the net estate and rounded to the rupee using the largest-remainder method, so the heirs' amounts always add back to the estate exactly.

As an independent check, the tool also expresses every share as an integer siham over a common denominator (the asl al-mas'ala) — the way fara'id is worked out by hand. The siham must sum to that base, which confirms the fraction arithmetic before the rupee amounts are shown.

• The Holy Qur'an — Surah An-Nisa 4:11–12 (fixed shares and the 2:1 rule)
• The Holy Qur'an — Surah An-Nisa 4:176 (kalala / further shares)
• Muslim Intestate Succession Ordinance No. 10 of 1931 (Cap. 60), Sri Lanka
• Ministry of Justice, Sri Lanka — Quazi Court system

The shares and derived procedures (asaba, awl, radd, Umariyyatayn) were last cross-checked against the Qur'anic text and classical fara'id consensus on 2026-07-11. This tool is guidance only and does not replace advice from a Quazi, scholar or lawyer.