> Some European country tax 90% of income...
This is untrue.
This is untrue.
Business VAT: 20 spent (20 %) 80 NOK left.
Income tax: 39 spent (max ~49 %) 41 NOK left.
VAT on purchase: 8.2 spent (20 %) 32.8 NOK left.
67.2 % taxes.
If I spend my money on gas/diesel then I would have ~16 NOK of value left. (84 % taxes)
About 18 % of the income tax I'll get back during my pension.
So 90 % is probably achievable on some things in some countries.