Zakah is one of the prime foundations of Islam. It is not a coincidence that the Arabic word zakah comes from the root z-k-y, which means “to purify.” The giving of the portion of one’s wealth purifies and grows the capital: growth through giving away, yet another secret from the wondrous works of our iman. In order that Muslims in North America might carry out the divine orders with carefulness, perfection, and exactness, we reach out to them to perform this essential duty. This booklet, The Calculation of Zakah for Muslims in North America will help them calculate the zakah, know its due time, and measure the level of nisab (“zakatability”). We present to you this work by Dr. Monzer Kahf, a booklet that serves as an operational guide for Muslims in North America.