Post Chart on Corporate Taxes as a Share of GDP is Deceptive

The Post had a chart showing that corporate income taxes have risen as a share of GDP across the OECD over the last 45 years. This is somewhat misleading. The chart is showing an unweighted average. This means that the sharp rise in the tax share in Norway would have the same weight as the sharp decline in the tax share of GDP in the United States. As a practical matter, the OECD data shows sharp declines in the corporate tax share of total tax revenue in most of the large countries.

For exam...