Islamic Inheritance Calculator (Mawarith/Fara’id)
Calculate Inheritance Shares
This calculator provides an estimation of inheritance distribution according to general Sunni Islamic Fara’id rules for a simplified set of heirs. For complex cases or a definitive ruling, consult a qualified Islamic scholar.
What is an Islamic Inheritance Calculator?
An Islamic Inheritance Calculator, also known as a Mawarith or Fara’id calculator, is a tool designed to estimate the distribution of a deceased Muslim’s estate among their heirs according to the principles of Islamic law (Shariah). The rules of inheritance in Islam are detailed and specific, primarily derived from the Qur’an, with further elaboration from the Sunnah (practices and sayings of Prophet Muhammad, peace be upon him) and scholarly consensus (Ijma).
This calculator helps individuals understand the potential shares allocated to different relatives like the spouse, children, parents, and other family members based on their relationship to the deceased and the presence or absence of other heirs. It’s important to use an Islamic Inheritance Calculator as a guide and consult with knowledgeable scholars for complex situations or legal documentation.
Who Should Use It?
- Muslims planning their estate and wanting to understand how it would be distributed.
- Family members of a deceased Muslim seeking to understand the initial division.
- Students of Islamic law studying Fara’id.
- Legal professionals dealing with wills and estates of Muslim clients.
Common Misconceptions
- All wealth goes to sons: This is incorrect. Daughters, wives, husbands, parents, and other relatives have specified shares.
- One can disinherit heirs: While a will (wasiyyah) can be made for up to one-third of the estate to non-heirs, the prescribed shares for Qur’anic heirs cannot be overridden by a will.
- The rules are the same for all schools of thought: There are minor differences in some details between the major Sunni schools (Hanafi, Maliki, Shafi’i, Hanbali) and the Shi’a Ja’fari school, although the core principles for primary heirs are largely similar. This calculator generally follows Sunni principles for the heirs included.
Islamic Inheritance Formula (Mawarith/Fara’id) and Mathematical Explanation
Islamic inheritance law, or ‘Ilm al-Fara’id (the science of the appointed shares), is a branch of Islamic jurisprudence that deals with the distribution of a deceased person’s estate. The primary sources are specific verses in the Qur’an (notably Surah An-Nisa, verses 11, 12, and 176).
The distribution process first involves settling debts, funeral expenses, and bequests (wasiyyah, limited to 1/3 of the remaining estate to non-heirs). The net estate is then distributed among the legal heirs.
Heirs are generally categorized into:
- Dhawu al-Fara’id (Fixed Share Heirs): Those who are assigned specific fractions of the estate in the Qur’an (e.g., husband, wife, mother, father, daughter).
- Asabah (Residuaries): Those who inherit the remainder of the estate after the fixed shares have been distributed, or the entire estate if no fixed share heirs exist (e.g., sons, father in some cases, brothers).
- Dhawu al-Arham (Distant Kindred): Relatives who are not fixed-share heirs or residuaries, who may inherit if neither of the first two categories is present (not covered by this simplified calculator).
The core principle is to first give the fixed shares. If the shares sum to less than 1, the remainder goes to the Asabah. If they sum to more than 1 (a situation called ‘Awl), the shares are proportionately reduced. If they sum to less than 1 and there are no Asabah, the remainder may be returned to the fixed-share heirs (Radd), with some exceptions.
Key Shares for Primary Heirs (Simplified):
- Husband: 1/2 if no children (or son’s children) of the deceased, 1/4 if there are.
- Wife: 1/4 if no children (or son’s children) of the deceased, 1/8 if there are. (Multiple wives share this fraction).
- Father: 1/6 if the deceased has children (or son’s children). If only daughters, 1/6 + residue. If no children, he is a residuary.
- Mother: 1/6 if the deceased has children (or son’s children) or two or more siblings. 1/3 otherwise (with exceptions in ‘Umariyyatayn cases not detailed here).
- Daughter(s): 1/2 if only one and no sons. 2/3 if two or more and no sons. If with son(s), they become residuaries with sons (2:1 ratio for male:female).
- Son(s): Residuary, taking what remains after fixed shares, or sharing with daughters in a 2:1 ratio.
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Net Estate | Value after debts and bequests | Currency | >0 |
| Spouse’s Share | Fraction for husband/wife | Fraction | 1/8, 1/4, 1/2 |
| Father’s Share | Fraction/Residue for father | Fraction | 1/6, Residue |
| Mother’s Share | Fraction for mother | Fraction | 1/6, 1/3 |
| Daughters’ Share | Fraction/Residue for daughter(s) | Fraction | 1/2, 2/3, Residue with sons |
| Sons’ Share | Residue for son(s) | Residue | Remaining amount |
Practical Examples (Real-World Use Cases)
Example 1: Deceased Male with Wife, Sons, Daughters, Parents
A man passes away leaving a net estate of 240,000. He is survived by his wife, 2 sons, 1 daughter, his father, and his mother.
- Net Estate: 240,000
- Wife’s share (with children): 1/8 = 30,000
- Father’s share (with children): 1/6 = 40,000
- Mother’s share (with children): 1/6 = 40,000
- Total fixed shares = 30,000 + 40,000 + 40,000 = 110,000
- Remaining for children (Asabah): 240,000 – 110,000 = 130,000
- Sons and daughters share the residue in a 2:1 ratio. Total parts = (2 sons * 2) + (1 daughter * 1) = 5 parts.
- Value per part = 130,000 / 5 = 26,000
- Each Son’s share: 2 * 26,000 = 52,000 (Total for sons = 104,000)
- Daughter’s share: 1 * 26,000 = 26,000
- Total distributed: 30,000 + 40,000 + 40,000 + 104,000 + 26,000 = 240,000
This shows how the Islamic Inheritance Calculator distributes the estate based on fixed and residual shares.
Example 2: Deceased Female with Husband, Daughters, Mother
A woman passes away leaving a net estate of 120,000. She is survived by her husband, 2 daughters, and her mother (father is deceased).
- Net Estate: 120,000
- Husband’s share (with children): 1/4 = 30,000
- Daughters’ share (two, no sons): 2/3 = 80,000
- Mother’s share (with children): 1/6 = 20,000
- Total distributed: 30,000 + 80,000 + 20,000 = 130,000
- Here, the sum of shares (1/4 + 2/3 + 1/6 = 3/12 + 8/12 + 2/12 = 13/12) is greater than 1. This requires ‘Awl (proportional reduction). The base becomes 13 instead of 12.
- Husband: 3/13 of 120,000 ≈ 27,692.31
- Daughters: 8/13 of 120,000 ≈ 73,846.15 (36,923.08 each)
- Mother: 2/13 of 120,000 ≈ 18,461.54
- Total ≈ 120,000
Our simplified calculator might not fully implement ‘Awl or ‘Radd’ but highlights the shares before such adjustments.
Using an Islamic Inheritance Calculator helps visualize these distributions.
How to Use This Islamic Inheritance Calculator
- Enter Net Estate Value: Input the value of the estate after all debts and valid bequests (wasiyyah up to 1/3 to non-heirs) have been settled.
- Specify Deceased’s Gender: Select whether the deceased was male or female, as this affects the spouse’s share.
- Indicate Surviving Heirs: Use the dropdowns and number fields to specify if a spouse survived, if there were children, the number of sons and daughters, and if the deceased’s father and mother are alive.
- Calculate Shares: Click the “Calculate Shares” button (or the shares update automatically on input).
- Review Results: The calculator will display:
- The primary result showing the distribution among the specified heirs.
- A table detailing the fractional share and amount for each heir.
- A pie chart visualizing the distribution.
- A brief explanation of the basis used.
- Reset or Copy: Use the “Reset” button to clear inputs or “Copy Results” to copy the distribution details.
Remember, this Islamic Inheritance Calculator provides an estimate based on a simplified model. For complex cases involving more distant relatives, ‘Awl (increase), ‘Radd (return), or differing scholarly opinions, consult a qualified scholar.
Key Factors That Affect Islamic Inheritance Results
The distribution of an estate in Islam is influenced by several key factors:
- Presence of Primary Heirs: The existence of spouses, children (sons and daughters), and parents significantly impacts the shares of others and whether more distant relatives inherit.
- Number and Gender of Children: Sons generally inherit twice the share of daughters when inheriting as residuaries. The number of daughters affects their collective share if no sons are present.
- Debts and Bequests: These must be settled *before* distributing the inheritance, reducing the net estate available to heirs. Bequests are limited to 1/3 and cannot be to those who are already inheriting as fixed-share or residuary heirs according to many scholars.
- Presence of Other Relatives: Grandparents, siblings, and other relatives may inherit depending on the absence of closer heirs (not fully covered by the simplified calculator).
- The ‘Awl (Increase) and ‘Radd (Return) Principles: If fixed shares sum to more than 1 (‘Awl), they are reduced proportionally. If they sum to less than 1 with no residuaries (‘Asabah), the remainder may be returned (Radd) to certain fixed-share heirs.
- Marital Status of the Deceased: Whether the deceased was married and survived by a spouse determines the spouse’s share.
Understanding these factors is crucial when using an Islamic Inheritance Calculator.
Frequently Asked Questions (FAQ)
1. What if the deceased had debts?
Debts, including funeral expenses, must be paid from the estate before any inheritance is distributed. The Islamic Inheritance Calculator should be used with the net estate value after these deductions.
2. Can someone make a will (wasiyyah) for more than 1/3 of their estate?
A wasiyyah is generally limited to 1/3 of the net estate after debts. Any amount exceeding 1/3 requires the consent of the legal heirs after the death of the testator.
3. Can a wasiyyah be made to an heir who is already receiving a share?
According to the majority of Sunni schools, a wasiyyah cannot be made in favor of a legal heir who already receives a prescribed share, unless other heirs consent after the testator’s death.
4. What if there are no sons, only daughters?
If there is one daughter and no sons, she gets 1/2. If there are two or more daughters and no sons, they share 2/3. The remainder goes to other residuaries if present (like the father, or brothers if no father/son).
5. What if the total fixed shares add up to more than the estate?
This is called ‘Awl. The denominator is increased, and each heir’s share is proportionally reduced. Our simplified Islamic Inheritance Calculator may not fully implement ‘Awl for all cases.
6. What if the total fixed shares are less than the estate, and there are no residuaries (Asabah)?
This is called ‘Radd. The remaining portion is generally returned to the fixed-share heirs (except usually the spouse) in proportion to their shares.
7. Does an adopted child inherit?
In Islam, adoption does not create the same legal ties as blood relations for inheritance. An adopted child does not automatically inherit, but the adoptive parent can make a wasiyyah (bequest) of up to 1/3 of their estate to them, or gift property during their lifetime.
8. Where can I find more detailed information?
For detailed rulings, it’s best to consult books on Islamic jurisprudence (Fiqh) related to Fara’id or speak with a knowledgeable Islamic scholar. The Qur’an (Surah An-Nisa 4:11, 4:12, 4:176) provides the foundational verses.
Related Tools and Internal Resources
- Zakat Calculator: Calculate the obligatory charity due on your wealth.
- Islamic Finance Guide: Learn about financial principles in Islam.
- Wasiyyah (Islamic Will) Template: Understand the components of an Islamic will.
- Debt Management from an Islamic Perspective: Guidance on handling debts.
- Mahr Calculator: Estimate the Mahr (dower) in marriage.
- Islamic Date Converter: Convert between Gregorian and Hijri calendars.
Using our Islamic Inheritance Calculator alongside these resources can provide a broader understanding of financial and estate matters in Islam.