بسم الله الرحمن الرحيم
(Fatwa: 283/250/D=03/1435)
It is lawful to work as an account for income tax and derive salary for the same. Your job and salary shall be alright, no matter if the person has taken loan from the bank. However, he shall be sinful due to interest based loan.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
