A Complete Guide to Khums

What Is Khums?

Khums is an Arabic word meaning "one-fifth," and it refers to an obligation to set aside 20% of certain categories of income and wealth. While the concept has a basis in the Quran — specifically Surah al-Anfal (8:41) — its scope and application differ significantly between Sunni and Shia jurisprudence.

In Ja'fari (Twelver Shia) jurisprudence, Khums is considered one of the most important financial obligations, alongside Zakat. According to Ja'fari scholars, the Quranic verse on Khums extends beyond war spoils to encompass a broad range of earnings and gains. This includes employment income, business profits, investment returns, and any other form of surplus wealth that remains after a person's legitimate annual living expenses.

In Sunni jurisprudence, Khums is generally discussed in narrower contexts — primarily war spoils (ghanimah), and according to some scholars, mineral wealth and buried treasure (rikaz). The broader application to annual income and surplus is distinctive to the Ja'fari tradition. This article focuses primarily on the Ja'fari understanding of Khums, as it is the tradition in which the obligation has its widest practical application.

The 20% Obligation

The rate of Khums is fixed at 20% (one-fifth) of qualifying surplus. This is derived directly from the Quranic text in Surah al-Anfal, which states: "Know that whatever you acquire of war gains, then one-fifth of it belongs to Allah, the Messenger, the relatives [of the Messenger], the orphans, the needy, and the traveler." Ja'fari scholars interpret "whatever you acquire" broadly to include all forms of gain and profit, not only war spoils.

It is important to understand that the 20% applies to surplus — not to gross income. Surplus, in this context, means the amount remaining after all legitimate annual living expenses have been deducted. This includes housing costs, food, clothing, transportation, education, healthcare, and other reasonable expenditures. The calculation is performed at the end of one's personal fiscal year (the Khums date), at which point any remaining income is assessed.

The 20% rate is substantially higher than the standard Zakat rate of 2.5%, but it applies to a different base. Zakat is calculated on total held wealth above the Nisab threshold, while Khums is calculated on net annual surplus. In practice, the actual amounts owed depend entirely on individual financial circumstances — a person with high expenses relative to income may owe very little Khums, while someone with significant surplus could face a substantial obligation.

• Khums rate: 20% (one-fifth) of annual surplus income
• Surplus = total income minus legitimate annual living expenses
• The rate applies to net surplus, not gross income
• Higher rate than Zakat (2.5%) but on a different calculation base
• Actual amounts vary widely based on individual financial circumstances

Categories Subject to Khums

According to Ja'fari jurisprudence, Khums applies to several categories of gain and wealth. The most commonly discussed categories are outlined below, though individual Maraji (sources of emulation) may have specific rulings on certain items.

The primary category is surplus annual income — any earnings from employment, business, investment, or other lawful sources that remain unspent at the end of the Khums year. This is the category most relevant to the majority of people, as it captures savings from salary, freelance work, rental income, and similar sources.

Beyond annual surplus, Ja'fari scholars generally recognize Khums on several other categories: mineral wealth extracted from the earth (such as gold, silver, and petroleum), treasure found buried or hidden, wealth obtained from the sea (such as pearls and coral through diving), lawful wealth that has been mixed with unlawful wealth (as a means of purification), land purchased by a dhimmi from a Muslim (a historical category with limited modern application), and profits from war (ghanimah, which is the category recognized across all schools).

For most contemporary Muslims following the Ja'fari school, the annual surplus category is by far the most practically significant. The other categories tend to apply in more specialized circumstances.

• Surplus annual income (earnings minus expenses) — the most common category
• Mineral wealth extracted from the earth
• Treasure and hidden wealth discovered
• Wealth obtained from the sea through diving
• Lawful wealth mixed with unlawful wealth (for purification)
• War gains (ghanimah) — recognized across all schools
• Land purchased by a dhimmi from a Muslim (historical category)

Setting and Using the Annual Khums Date

One of the distinctive practical aspects of Khums is the concept of a personal fiscal year. Unlike Zakat, which is often tied to the hawl (the anniversary of when wealth first reached the Nisab threshold), Khums operates on a fixed annual date chosen by the individual. This date is sometimes called the "ra's al-sanah al-khumsiyyah" (the beginning of the Khums year).

According to most Ja'fari scholars, the Khums date is typically set as the anniversary of when a person first began earning income — whether from their first job, first business venture, or another starting point. Once established, this date remains consistent from year to year. On this date, the person assesses all income earned during the past year, deducts legitimate living expenses, and calculates 20% of the remaining surplus.

Some practical considerations arise around the Khums date. Items purchased during the year for personal use (clothing, furniture, food, etc.) that have been consumed or are still in use do not count as surplus. However, items purchased but not yet used, excess supplies, and unused gifts may be considered surplus and subject to Khums. Cash savings, investment gains realized during the year, and other accumulated wealth that was not spent on living expenses are included in the surplus calculation.

For those who have never set a Khums date, most scholars advise choosing a date and beginning the practice, potentially with guidance from a scholar regarding any past obligations. Some people choose dates that are easy to remember, such as the beginning of Ramadan or the first day of the Islamic new year.

• The Khums date is a personal annual accounting date, typically the anniversary of first earning income
• On this date, assess total income, deduct living expenses, and calculate 20% of surplus
• Items consumed or in personal use during the year are not counted as surplus
• Unused purchases, excess supplies, and cash savings are generally included
• The date remains consistent from year to year once established

Sahm al-Imam and Sahm al-Sadat

A distinctive feature of Khums in Ja'fari jurisprudence is that the 20% is divided into two equal portions, each with a specific designated purpose. This division is based on scholarly interpretation of the Quranic verse in Surah al-Anfal, which lists six categories of recipients.

The first half — Sahm al-Imam (the Imam's share) — represents the portion belonging to the Imam of the time. According to Ja'fari belief, in the current period of occultation (ghaybah) of the Twelfth Imam, this portion is entrusted to qualified Maraji (senior Shia scholars who serve as sources of emulation). The Marja directs these funds toward religious education, seminaries, Islamic institutions, community services, and other purposes deemed to serve the broader Muslim community. A person paying Khums typically requires permission from their Marja to distribute the Sahm al-Imam.

The second half — Sahm al-Sadat (the share of the Sayyids) — is distributed to needy descendants of the Prophet Muhammad (peace be upon him), known as Sayyids or Hashemites. According to Ja'fari scholars, Sayyids who are in financial need and qualify as recipients may receive this portion. Some Maraji allow the payer to distribute Sahm al-Sadat directly to qualifying individuals, while others require that it be channeled through the Marja's office.

The division between these two portions and the mechanism of distribution underscores the communal and institutional dimension of Khums — it is not simply a personal act of charity but a structured system of wealth redistribution with specific rules and oversight.

• Sahm al-Imam (50% of Khums): directed by the Marja toward religious and community institutions
• Sahm al-Sadat (50% of Khums): distributed to needy descendants of the Prophet
• Permission from one's Marja is typically required for distributing Sahm al-Imam
• Some Maraji allow direct distribution of Sahm al-Sadat to qualifying individuals
• The system provides structured wealth redistribution with scholarly oversight

Practical Steps for Calculating Khums

For those preparing to calculate their Khums, a systematic approach helps ensure accuracy. The process begins with identifying the Khums date and gathering financial records for the entire year.

First, total all income received during the Khums year from all sources — employment, business, investments, gifts, inheritances (where applicable), and any other lawful earnings. Second, total all legitimate living expenses incurred during the year — housing, food, clothing, transportation, healthcare, education, charity, and other reasonable expenditures. The difference between total income and total expenses is the surplus.

Third, account for any items purchased during the year that remain unused or unconsumed. These are generally added to the surplus. Fourth, identify any assets from previous years on which Khums has already been paid — these should not be double-counted. Fifth, calculate 20% of the net surplus — this is the total Khums owed, to be divided equally between Sahm al-Imam and Sahm al-Sadat.

Keeping detailed records throughout the year significantly simplifies this process. Many people find it helpful to track income and expenses monthly and to maintain a running estimate of their Khums liability. For complex financial situations involving business ownership, real estate, or investment portfolios, consulting a scholar or a knowledgeable accountant familiar with Khums rules is strongly recommended.

• Step 1: Identify your Khums date and gather financial records
• Step 2: Total all income from all sources during the year
• Step 3: Total all legitimate living expenses
• Step 4: Calculate surplus (income minus expenses)
• Step 5: Add value of unused purchases and unconsumed items
• Step 6: Exclude assets on which Khums was already paid in prior years
• Step 7: Calculate 20% of net surplus and divide equally between Sahm al-Imam and Sahm al-Sadat

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