Earlier quoted context omitted.
> This seems like a pretty poor argument for a flat tax and in fact could be seen as an argument against it. If raising top end bracket taxes didn't increase overall income, then it must be the case that it reduced the tax burden on lower incomes -- which is the entire point of progressive taxes. So progressive taxes work, let's keep them! Not necessarily. That would be true if the absolute $$$ collected were the sam…
> Say 4 of the high earners stop working as much (since their marginal rates are so high). I know you're just using this as an example, but it begs a question I've struggled with: is there any actual proof that marginal tax rates reduce productivity in high earners? On its face it makes perfect micro-economic sense, but that's like saying a cache will never miss or a cow is perfectly spherical. It just doesn't match…
If you are still talking about tax credits, you are no where near the top tax brackets. Note that income brackets extend to more than just your reported W-2s...