Zakat

thumb|313x313px|Zakat spending as per the Quran on 8 categories of people Zakat (or Zakāh) is one of the Five Pillars of Islam. Zakat is the Arabic word for "giving to charity" or "giving to the needy". Zakat is a form of almsgiving, often collected by the Muslim Ummah. It is considered in Islam a religious obligation, and by Quranic ranking, is next after prayer (salah) in importance. Eight heads of zakat are mentioned in the Quran.

charity given to the poor at the end of the fasting in the Islamic holy month of Ramadan

Royal treasury in old Islamic states

İspençe was a land tax levied on non-Muslims in the Ottoman Empire.

Al-Kaffarah is a term in Islamic law meaning the expiation of sin, or more specifically “to compensate for commissioning a sinful act or what is paid to redress an imbalance that is a kind of penalty or punishment.” Examples of sinful acts include violating Ramadan fasting, violating ihram restrictions in Hajj, consciously hurting a person or animal. Examples of expiation of them include fasting for two consecutive months, freeing a Muslim slave, paying for food to feed 60 poor people, slaughtering a goat.

Religious tax obligations in Islam

Haraç (, , , ) was a land tax levied on non-Muslim subjects in the Ottoman Empire.