Sweden is also a bit of an exception. https://en.wikipedia.org/wiki/Laffer_curve https://en.wikipedia.org/wiki/Laffer_curve > A 2011 study by Trabandt and Uhl

Sweden is also a bit of an exception. https://en.wikipedia.org/wiki/Laffer_curve https://en.wikipedia.org/wiki/Laffer_curve > A 2011 study by Trabandt and Uhlig published in the Journal of Monetary Economics estimated a 70% revenue maximizing rate, and estimated that the US and most European economies were on the left of the Laffer curve (in other words, that raising taxes would raise further revenue). A 2005 study concluded that with the exception of Sweden, no major OECD country could increase revenue by reducing the marginal tax rate.