Is zakat obligatory on an amount of one hundred thousand Egyptian pounds, which is from business profits and salary, and a year has not passed on it, knowing that the original capital of the business is twenty-five thousand Egyptian pounds? And is it permissible to pay zakat in two installments?

The profit from trade follows the original capital in terms of the zakat year. So, the capital and its profits are subject to zakat when the zakat year for the original capital is completed. As for the salary, it has its own independent zakat year, but it is permissible to pay its zakat along with other money for ease. It is permissible to pay zakat in installments before its zakat year is completed. However, after its completion, it becomes due immediately, unless there is a valid excuse.