> Why? If taxes are going to have side effects anyway, I think we should try to make those effects positive instead of negative.
Simply put: it’s a moral hazard. When the goal of the tax is in service to something other than the cost of government, then the tax rate can be arbitrary, and manipulated to the benefit of those in political favor. That sort of arbitrariness is intolerable in a free and just society as we should aspire to be.
>> Regardless of reason, taxation is a taking of assets from its owners, and this is a moral compromise we tolerate in service of having a government at all.
> I don't think I agree with that.
> For example, I also think we should have a (revenue neutral) carbon tax. Part of the tax's purpose would indeed be to fund the government, but the other purpose would be to make people pay for the actual social cost of emitting carbon into the atmosphere, as opposed to passing them on to the broader public. This allows the free market to work properly.
You are free to disagree, but what is the purpose of the disagreement here? It is possible to both recognize taxes as both a taking of assets (often cash, but historically could be anything) and a necessity. You can view this on your own paycheck: every single dollar that goes to your government is a dollar that you personally earned and was taken from you (“withheld”) by your employer and paid to your government.
You have some influence over how those dollars are then expensed by your government, by only to the extent allowed by the law through a power-sharing agreement (“the Constitution”, both Federal and your State’s). The larger the government, the less influence you have, and the more likely a higher percentage of the earnings which were taken from you will go to benefit folks you would rather it didn’t (“wasted”).
But you raise a good point about the side effects: we are going to have taxes anyway, and the side effects are going to matter in the discussion. Where they matter though is not in the purpose of the tax—that is and should remain to cover the cost of government—it matters in which taxes are implemented to cover the cost of government. As long as that remains the basis, there is much room for improvement in the way we levy taxes.