Zakat (The Almsgiving):


Zakat, almsgiving, is the third pillar. Social responsibility is considered part of one's service to God; the obligatory act of zakat enshrines this duty. Zakat prescribes payment of fixed proportions of a Muslim's possessions for the welfare of the entire community and in particular for its neediest members. It is equal to 2.5 percent of an individual's total net worth, excluding obligations and family expenses.

Once a year you give 2.5% of your wealth and it can be exceeded more than 2.5% . It is also to bring balance in the society by supporting the poor without any expectations.