Top income tax rate comparisons are worthless. What percentage of the produced wealth of a nation do taxes take is a the question. An approach might be to determine a weighted average income tax rate plus weighted average payroll tax rate plus weighted average excise and tariff tax rates.
weighted average income tax rate plus weighted average payroll tax rate plus weighted average excise and tariff tax rates. Yeah, that is the way to measure to overall effective tax take.
Could you take total gov't spending, plus or minus deficit or surplus as the numerator, and GDP as the denominater?
Gov't accounting is so weird that probably the result is incalcuable.