Ref. No. 37 / 1032
In the name of Allah the most Gracious the most Merciful
The answer to your question is hereunder:
To abstain from paying income tax where there is a great deal of injustice, you may continue using the same way. Moreover being a Muslim you have to avoid any immoral action and any clear violation of the law of the country. Your intention must not be to deceive others.
And Allah knows best
Darul Uloom Waqf Deoband