[cdoan]

Try this source.  

https://www.google.com/url?sa=t&source=w...BqmOBjR4Ia

Sweden and Norway have similarly flat income tax systems. Sweden’s top marginal tax rate of 56.9 percent applies to all income over 1.5 times the average income in Sweden. Norway’s top marginal tax rate of 39 percent applies to all income over 1.6 times the average Norwegian income.


https://taxfoundation.org/how-scandinavian-countries-pay-their-government-spending/

This is what I have advocated, a flat tax, not many brackets.  Everybody has the same deduction, in this case 1.5 average income