Earlier quoted context omitted.
Question: what do you think about a tax rate determined by wealth, rather than the first derivative of wealth (i.e. income)? When a person whose net worth is $10,000 earns $5,000, should they be taxed the same way a person whose net worth is $1000,000,000 earns $5,000 is taxed?
The reason your tax rate should be determined by your income, rather than the first integration of your income (i.e. wealth), is because just having wealth isn't hurting anyone. If I spend every evening in my garage fixing up an old car, and increase its value from $1000 to $2000, I've increased my wealth but I haven't negatively (or positively) affected anyone else. It might be useful as a means of generating govern…
As to your example, you won't pay a wealth tax on your car if you increase its value under Zakat. Now if you want to use it as a currency (start flipping cars) then it's different.