Purification vs Zakat

Both purification and zakat get loosely translated as "cleansing" or "purifying" wealth in English, which causes real confusion, but they answer different questions. Purification (sometimes called tanqiyah or tathir) answers: did this specific income include something impermissible that I must not personally keep? Zakat answers: how much of my qualifying wealth is owed this year to those entitled to it, as one of the five pillars of Islam? A Muslim investor can owe both, on the very same portfolio, in the very same year, for entirely separate reasons.

Purification is triggered by holding a stock whose business generates some non-permissible income, mainly interest, even a stock that is otherwise Shariah-compliant. It applies only to the tainted slice of income, calculated as the investment or dividend value multiplied by the company's impure revenue percentage. Zakat is triggered simply by owning zakatable wealth, cash, tradeable securities, gold, and similar assets, that has remained in your possession for a full lunar year (the hawl) and exceeds the nisab threshold, roughly the value of 85 grams of gold, regardless of whether the underlying business has any impure income at all.

Purification amount equals investment or dividend value multiplied by the stock's impure revenue percentage, exactly what the PureInvest purification calculator computes for any covered ticker. The rate differs for every stock and can be well under 1%, or, for a heavily impure company, a much larger share of the value. Zakat on investment shares is typically calculated at 2.5% of the zakatable portion of a holding, though methodology varies: some scholars apply zakat to the full market value for shares actively traded for resale, while others zakat only the company's liquid, zakatable net assets for shares held long-term as an investment. These are two separate calculations, and neither substitutes for the other.

Purified amounts are given as sadaqah, voluntary charity, to any legitimate charitable cause; the point is simply to avoid personally benefiting from the tainted portion, and there is no fixed list of eligible recipients. Zakat has a specific, Quran-defined list of eligible recipients (Surah At-Tawbah 9:60): the poor, the needy, zakat administrators, those whose hearts are to be reconciled, those in bondage, debtors, causes in the path of Allah, and the wayfarer. Giving purification money to a zakat-eligible cause is fine, but it does not count as having paid zakat, and paying zakat does not count as having purified impure investment income.

Run both calculations independently. Use a purification calculator against your dividend or investment income for each impure stock you hold, and separately calculate your annual zakat obligation on your total qualifying wealth, including brokerage holdings, once a full lunar year has passed. Keep records of both, since they are owed for different reasons and, in the case of purification, can be directed to any charitable cause at the giver's discretion. Because zakat methodology varies by scholar and by asset type, consult a qualified Shariah advisor for your specific zakat obligation; PureInvest's calculator addresses purification only, not zakat.