Answer:
(Fatwa: 327/293/B=1432)
It is not lawful to pay income tax with bribe money. If you do not like the income tax you can adopt any other way in compulsion like life insurance etc. However, the extra amount that you receive is interest which should be given to the poor without the intention of reward.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
