World Tax Revenue Chart
Current World Tax Revenue: 15.22% GDP
World Tax Revenue for Dec 2015
Mean: 14.30% GDP
Median: 14.22% GDP
Min: 13.25% GDP (Dec 2009)
Max: 16.02% GDP (Dec 1995)

World tax revenue (percent of GDP). Excludes most social security contributions.

Source: World Bank > World > World Tax Revenue