The moral implications are important. That's why it's a marginal rate being proposed in the USA, only on income over 10 million. Taxing higher rates on much hi

The moral implications are important. That's why it's a marginal rate being proposed in the USA, only on income over 10 million. Taxing higher rates on much higher income amount is morally better than taxing that same rate on a lower income. This is because of the impact it has on the earners well being. Income after 10 million has a much lower impact on that persons well being than say, their first 1 million.