He works for a company and much of its income is from mukoos (taxes, levies)

Dear Brothers & Sisters,
As-Salaamu-Alaikum wa Rahmatullahi wa Barakatuh. (May Allah's Peace, Mercy and Blessings be upon all of you)
One of our brothers/sisters has asked this question:
I have found work in a government department and I know for certain that the income of this department is mostly – more than 90% – composed of mukoos (taxes, levies). Is it permissible for me to work in this department when my salary will inevitably come from their income? What is the general ruling on this issue, I mean the ruling on working on a project for one whose wealth is haraam? Is it different if the owner of this work is the state or one of its representatives, as opposed to a private individual or company?.
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Answer:
Praise be to Allaah.

Firstly: 

We have previously discussed the ruling on mukoos on this website and we have stated that it is haraam, because Allah, may He be exalted, says (interpretation of the meaning): “O you who believe! Eat not up your property among yourselves unjustly” [an-Nisa’ 4:29]. And the Prophet (blessings and peace of Allah be upon him) said: “It is not permissible to take the wealth of a Muslim except with his consent.” Narrated by Ahmad; classed as saheeh by al-Albaani in al-Irwa’, 1459 

For more information please see the answer to question no. 25758 

Secondly: 

|With regard to your work, if your work involves helping in something haraam, such as the mukoos (taxes, levies) and so on, then it is not permissible, because Allah, may He be exalted, says (interpretation of the meaning): “Help you one another in Al‑Birr and At‑Taqwa (virtue, righteousness and piety); but do not help one another in sin and transgression” [al-Maa’idah 5:2].

But if your work does not involve haraam things, and the Department has other sections that do not deal with haraam things, you can work in those permissible sections, and whatever salary you take in return for this permissible work, there is nothing wrong with you taking it. 

For more information please see the answer to question no. 31781

And Allah knows best.

Whatever written of Truth and benefit is only due to Allah's Assistance and Guidance, and whatever of error is of me. Allah Alone Knows Best and He is the Only Source of Strength.
Your brother and well wisher in Islam

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