This is a very famous booklet that has been distributed by ISNA since the 1970's when the author, Dr. Kahf, was working for ISNA. The author is a renowned scholar in the field of Islamic finance, Banking, Zakah, last will, and Trusts. The booklet is based on the works of Dr. Yusuf Qaradawi's Fiqh Al-Zakah, which Dr. Kahf has translated into English. The booklet is very easy-to-use with tables and upto date information about current questions such as 401 K, pension funds, mutual funds and stocks. Its one of the best books that have been put up to assist Muslims in the west calculate their zakah.

The author's works can be found at his website www.kahf.net