Islamic Inheritance Calculator
Calculate the distribution of an estate according to the principles of Fara’id.
Distribution Summary
The estate has been distributed among the eligible heirs.
| Heir | Fractional Share | Amount |
|---|
What is an Islamic Inheritance Calculator?
An Islamic Inheritance Calculator is a digital tool designed to apply the complex rules of ‘Ilm al-Farā’iḍ’ (The Science of Inheritance) to distribute a deceased Muslim’s estate. This area of Islamic jurisprudence specifies a fixed, divine system for how property should be allocated among surviving relatives. It is not based on the deceased’s wishes (except for a small portion allowable for bequests) but on a pre-ordained structure outlined in the Qur’an and Sunnah.
This calculator should be used by individuals planning their estate, families of the deceased, and Islamic scholars or legal professionals who need to ensure compliance with Sharia law. It helps avoid disputes and ensures that every rightful heir receives their mandated share. A common misunderstanding is that a person can write a will leaving their assets to whomever they please; in Islam, at least two-thirds of the estate is reserved for prescribed heirs.
Islamic Inheritance Formula and Explanation
There is no single algebraic formula for Islamic inheritance. Instead, it’s a hierarchical, rule-based system involving three main categories of heirs:
- Qur’anic Heirs (Aṣḥāb al-Furūḍ): These individuals are entitled to a specific, fixed share mentioned in the Qur’an. Examples include the husband, wife, mother, father, and daughters. Their shares are defined as fractions like 1/2, 1/4, 1/8, 2/3, 1/3, or 1/6.
- Residuaries (‘Aṣabah): These heirs, typically male relatives (like sons), receive the remainder of the estate after the Qur’anic Heirs have taken their shares. If sons and daughters inherit together, they take the residue in a 2:1 ratio (a son’s portion is double a daughter’s).
- Distant Kindred (Dhawū al-Arḥām): These are relatives who are not in the first two categories. They only inherit if no one from the above two classes exists.
A key principle is Hajb (Exclusion), where the presence of a closer relative can partially or fully exclude a more distant one. For example, a son excludes all brothers and sisters of the deceased. Our investment calculator can help you grow your estate, but this tool ensures it’s distributed correctly.
| Variable (Heir) | Meaning | Typical Share (Fraction) | Typical Range (Number of Heirs) |
|---|---|---|---|
| Spouse (Husband/Wife) | The legal partner of the deceased. | 1/8, 1/4, 1/2 | 0 or 1 |
| Son(s) | Male offspring of the deceased. | Residuary | 0+ |
| Daughter(s) | Female offspring of the deceased. | 1/2 (for one), 2/3 (for multiple), or Residuary with son(s) | 0+ |
| Father | The male parent of the deceased. | 1/6 or Residuary | 0 or 1 |
| Mother | The female parent of the deceased. | 1/6 or 1/3 | 0 or 1 |
Practical Examples
Example 1: Man dies leaving a Wife, a Son, and a Daughter
This is a common scenario that demonstrates the interaction between Qur’anic Heirs and Residuaries.
- Inputs: Estate Value = 300,000, Wife = Yes, Sons = 1, Daughters = 1.
- Calculation:
- The Wife is a Qur’anic Heir. With the presence of children, her share is 1/8. (1/8 * 300,000 = 37,500).
- The remaining estate is 300,000 – 37,500 = 262,500.
- The Son and Daughter are Residuaries. They inherit the remainder in a 2:1 ratio. This means there are 3 “parts” (2 for the son, 1 for the daughter).
- Value per part = 262,500 / 3 = 87,500.
- Results:
- Wife receives: 37,500
- Son receives (2 parts): 175,000
- Daughter receives (1 part): 87,500
Example 2: Woman dies leaving a Husband, Mother, and Father
This example shows a case with only Qur’anic Heirs.
- Inputs: Estate Value = 240,000, Husband = Yes, Mother = Yes, Father = Yes.
- Calculation:
- The Husband is a Qur’anic Heir. With no children, his share is 1/2. (1/2 * 240,000 = 120,000).
- The Mother is a Qur’anic Heir. In the presence of the father, her share is 1/3 of the *remainder* after the husband’s share (this is a special case known as Al-Umariyyatayn). Remainder = 240,000 – 120,000 = 120,000. Her share is 1/3 * 120,000 = 40,000.
- The Father is a Residuary in this case and takes the rest.
- Results:
- Husband receives: 120,000
- Mother receives: 40,000
- Father receives: 240,000 – 120,000 – 40,000 = 80,000
How to Use This Islamic Inheritance Calculator
Follow these steps to get an accurate distribution of the estate:
- Select Deceased’s Gender: Choose whether the deceased was male or female. This changes the “Spouse” label to “Wife” or “Husband”.
- Enter Estate Value: Input the total net worth of the estate. This is the amount left after all debts, funeral expenses, and valid bequests (wasiyyah, up to 1/3 of the estate) have been settled.
- Select Surviving Heirs: Use the checkboxes and number fields to indicate all the surviving relatives who are eligible to inherit. Be precise. For example, checking “Has Father” will automatically exclude the “Paternal Grandfather”.
- Click Calculate: Press the “Calculate” button to process the information.
- Interpret the Results: The calculator will display a table showing each heir, their fractional share, and the final amount they receive. A pie chart will also provide a visual breakdown of the distribution. For more about long-term financial growth, see our article on compound interest.
Key Factors That Affect Islamic Inheritance
The distribution of an estate is highly sensitive to the set of surviving relatives. Here are some of the most critical factors:
- Presence of a Son: The existence of even one son fundamentally alters the inheritance. He becomes a primary residuary heir and excludes many other relatives like brothers, sisters, and uncles.
- Debts and Bequests: Islamic law mandates that all debts, funeral costs, and legal bequests (Wasiyyah) must be paid *before* the estate is divided among the heirs. The calculator assumes you have entered the post-debt value.
- Number of Heirs: The specific share of an heir can change based on a count. For example, a single daughter receives 1/2, but two or more daughters collectively share 2/3.
- Gender of the Deceased: This primarily affects the share of the surviving spouse. A husband’s share (1/2 or 1/4) is double a wife’s share (1/4 or 1/8).
- Exclusion (Hajb): The core logic of the system. A father excludes a grandfather, a son excludes a brother, and so on.
- Special Cases (Awal & Radd): If the fixed shares sum to more than 1 (Awal), all shares are proportionally reduced. If they sum to less than 1 with no residuary heir (Radd), the remainder is proportionally redistributed. This ensures the entire estate is always fully distributed. Explore our budget planner to manage your finances effectively.
Frequently Asked Questions (FAQ)
This is a divine decree mentioned in the Qur’an (4:11). Islamic scholars explain that this is balanced by the fact that a man has the sole financial responsibility to provide for his entire family (wife, children, and sometimes other relatives), while a woman has no such obligation. Her inheritance is hers alone to keep, save, or invest. Understanding your financial goals is an important step in managing your inheritance.
If there is one daughter, she receives a fixed share of 1/2. If there are two or more daughters, they collectively receive a fixed share of 2/3. The remainder of the estate then goes to other residuary heirs like the father or brothers of the deceased.
No. According to the consensus of all major Islamic schools of thought, there is no mutual inheritance between Muslims and non-Muslims.
A bequest is a gift from the estate specified in a will. It is only valid for up to 1/3 of the total estate value and cannot be made to an individual who is already a prescribed heir. For example, you cannot make a bequest to your son to give him more than his ordained share.
This calculator handles the most common heirs. The full science of Fara’id includes dozens of potential relatives and extremely complex scenarios (such as ‘al-Mushtarakah’). For a definitive legal ruling, especially in complex cases, you must consult a qualified local Islamic scholar or a Sharia court.
‘Awal occurs when the sum of the fixed fractional shares exceeds 1. For instance, a husband (1/2) and two full sisters (2/3) add up to 7/6. In this case, the denominator is “increased” from 6 to 7, and the shares become 3/7 for the husband and 4/7 for the sisters, ensuring all assets are distributed proportionally.
This is a complex situation. The share of the deceased heir would pass to their own eligible heirs, which requires a separate, subsequent inheritance calculation. This calculator does not handle these cascading calculations.
No, adopted children are not considered legal heirs for the purpose of mandatory inheritance. However, it is highly encouraged to provide for them through a gift during one’s lifetime or through a bequest (Wasiyyah) from the allowable 1/3 portion of the estate.