And that's assuming a 75% effective rate, which you can't get at the 95th percentile without also charging high effective rates to the majority of people because it's not possible to charge more than a 100% marginal rate on the difference.
Idk according to my swedish coworker, there was a marginal tax rate of 70-80%++ from like 1940-1985 or something.
Here is a hypothetical calculation of someone making $120k USD who is married with two kids: https://home.kpmg.com/xx/en/home/insights/2011/12/sweden-inc.... Such a person pays roughly 50% in total taxes. In the US it would be roughly 25% (in Maryland).
Maybe the federal government offers lower tax rates based on how many different states the company has a sizeable portion of its labor force. Ie near zero for being spread out everywhere.
Total spending at all levels of government in the US is almost $7 trillion. So even if you tax the top 5% at 75%, you’re covering 17% of total expenditures. European countries don’t build their welfare states by heavily taxing the rich. In say Germany, an entry level office worker will pay 30%+ of their income in taxes and mandatory insurance.