Firstly: Zakat and tax are two distinct obligations. Zakat is a right of Allāh and a religious obligation for the deserving recipients, while tax is a societal right by law.
What is considered a societal right by law takes precedence over other obligations by force of authority, and it is considered one of the basic expenses that should be considered when paying Zakat, similar to necessities like food, drink, medical treatment, and housing.
Secondly: Income tax is considered an accumulated debt that must be paid by the end of the tax year. In this case, it is exempt from Zakat as it is a specific, predetermined amount. The only difference between income tax and the required stable debt is that the tax has a specified value, which is usually known in advance based on the current situation. This value does not enter the scope of Zakat calculation.
For example, someone in a tax bracket of twenty percent would deduct this percentage cumulatively from the value of saved and earned money.
Thirdly: The principle regarding Zakat on wealth is that it should not be occupied with basic needs, such as food, drink, medical treatment, and housing, including debts that are due at the time of Zakat payment. For long-term financial obligations at the time of Zakat payment, such as immediate debts, do not prevent the payment of Zakat on saved or earned money.
Finally: The example given in the question is perplexed for the following reasons:
- Donations are not entirely exempt from tax but are subject to a specific percentage, and we do not know the value of this percentage to define the tax base at the end of the tax year.
- The tax debt is prioritized over other obligations by law.
After all, Allāh knows best.
Fatwa issued by Dr. Khālid Naṣr