Scholarly Sources
Our tools are built upon authentic classical texts and the guidance of reliable contemporary scholars.
Last reviewed: October 2026
Classical Texts (Fiqh)
- Al-Hidayah fi Sharh Bidayat al-Mubtadi by Burhan al-Din al-Marghinani: A foundational text in the Hanafi school, heavily referenced for rules regarding Zakat thresholds, Ushr, and Nisab.
- Al-Fatawa al-Hindiyyah (Fatawa Alamgiri): Used extensively for determining specific practical applications of Zakat on trade goods, debts, and agricultural produce.
- Al-Sirajiyyah by Siraj al-Din al-Sajawandi: The definitive classical text on Hanafi inheritance law (Ilm al-Faraid). Our Faraid inheritance calculator is directly modeled on the algebraic rules laid out in this work.
Contemporary Sources & Fatwas
- Fiqh al-Zakat by Dr. Yusuf al-Qaradawi: Consulted for modern applications of Zakat, specifically regarding 401k plans, modern business assets, and shares and stocks.
- Standard Zakat Guidelines (Various Fiqh Councils): We consult the standardized guidelines published by reliable bodies such as the Islamic Fiqh Academy and local Darul Iftas for modern financial instruments.
Notice regarding differences of opinion (Ikhtilaf)
While we strive to provide accurate calculations based on the Hanafi madhab, we recognize that valid differences of opinion exist among scholars, especially concerning modern financial assets. When in doubt regarding your specific situation, you should consult a local qualified scholar (Mufti).