So many people are currently arguing over which way to "tax" people is better than other ways.
Some DemoCRAPublicans want a "flat tax". This faction pretends this would be more ethical, while the other pretends this "flat tax" would be in addition to the IRS and other taxing scams. The latter are quick to accuse the former of robbing poor families (but they'll pretend the poor families aren't being robbed now).
Taxation is theft; it is extortion.
All of that is beside the point.
Taxation is unethical because it funds the state. You can't make it right as long as it helps keep a state alive.
A civilized society is what humans sometimes manage to create in spite of uncivilized acts such as taxation.