What is the Zakat al-Mal due on a bank account whose proceeds are used to pay off credit card debts?

Firstly: Zakat is obligatory upon anyone who possesses the minimum taxable amount (nisab) of money (equivalent to 85 grams of gold or 595 grams of silver) and a full lunar year (hawl) has passed on it, even if the money is designated for a debt or marriage. Its amount is 2.5%.

Secondly: Money invested in an Islamic bank is subject to zakat on both its principal and profit. As for a usurious bank, zakat is only due on the principal, and the usurious return must be disposed of by spending it on charitable causes, because it is illicit wealth. The money must be withdrawn from usurious investment. If there is no Islamic bank available to protect the money from loss, it is permissible to deposit it in current accounts in usurious banks, but not in investment or savings accounts.

Thirdly: The preponderant opinion is that debts owed by a person are not deducted from the wealth subject to zakat.