بسم الله الرحمن الرحيم
(Fatwa: 381/381/SD=07/1436)
(1) Yes, it is allowable to pay income tax with interest money.
(2) If no interest charge is levied then it is allowable to transact with credit card.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
