The highest tax country that I know of is Canada. The reason being is because of such benefits as free health care. The easiest way to figure out if a country has high taxes is to look at the benefits they have that might make the government tax higher for using it.
Depends on your marital status and if you have any children. Single 0 Children, avoid Belgum, Germany, Hungry. Maried 2 Children avoid Turkey, Sweden, Polland.