If a haraam amount of money was mixed with halaal money, how should Zakaat be calculated?

Answer

It is Waajib to give the haraam amount as Sadqah without niyyat of thawaab. If this was not done by the time the Zakaat year ends, then Zakaat has to be paid on the total amount. However, the obligation of giving the haraam amount as Sadqah remains. Paying Zakaat on the total does not make halaal the haraam money.