In a high-tax US state like California the top marginal income tax is about 47%. This covers no health care unless you are over 65, disabled, or are below the medicaid threshold, which is low.
There is also a lower rate om capital gains such as stock or real estate, sales (like a VAT), gas tax, vehicle tax, utility tax, phone tax, cable internet tax, etc.
Plus, of course, employers are paying some extra payroll taxes per employee.
I lived in the UK, Norway, Switzerland and US (NYC and Bay Area). Except Switzerland I did not really notice a big tax change for any of the others.
Sure in UK and Norway healthcare and University is free, but healthcare is provided by my employer in the states. So for me it is a wash.
But hey in the US I get to pay for the largest army on the planet.
What I would say is that in the US my taxes feel the most "unfair" since my tax rate is sort of the max. Richer people have ways of avoiding taxes and poorer people pay less tax.
There is also a lower rate om capital gains such as stock or real estate, sales (like a VAT), gas tax, vehicle tax, utility tax, phone tax, cable internet tax, etc.
Plus, of course, employers are paying some extra payroll taxes per employee.