The Department of Zakat and Income Tax (DZIT) joined Sadad on May 12, 2007 where it uses SADAD to collect its Zakat from companies and individuals who are liable to pay Zakat or tax through SADAD using all the available banking channels.

The Department of Zakat and Income Tax (DZIT) was established on 1951. The mission of DZIT is briefly to administer and collect zakat on commercial goods from Saudi individuals and companies also from individuals and companies of GCC states subject to the same treatment like Saudis, and to administer and collect tax from non-Saudi individuals doing business in the Kingdom, resident Saudi companies on shares of non-Saudi partners, and non-resident companies doing business in the Kingdom through a permanent establishment or deriving income from  a source in the Kingdom.

The Head-office of DZIT is in Riyadh. There are ten field-offices that report to the Head-office located in the Kingdom. In addition, there are sections in the Financial Offices to collect zakat and tax in regions and districts with no DZIT field-offices.