Purchasing a car on interest
Q: Person A has said that for a self employed person who has to declare his profits at the end of 1 year in the UK, it is jaaiz for him to purchase a car on interest because if he does that, he’ll be paying less tax to the government as he believes that tax is haraam.
He says this isn’t permissible for a person who isn’t self employed as such a person pays tax according to his fixed salary irrespective of where he spends his wage on. (He says that this is how the system works in UK for tax.)
What is to be said of this?