Despite the substantial revenue potential of corporate taxation, the United States currently collects about the lowest corporate revenue (only 1 percent of U.S. GDP) among the advanced economies. Several structural shortcomings of the corporate tax code—widely varying tax rates on different types of investment, insufficient support for research and development, and other weaknesses—limit its efficiency and progressivity. The corporate tax code could also play a larger role in countering increased concentration in the economy.
Furman, Jason. "How to Increase Growth While Raising Revenue: Reforming the Corporate Tax Code." The Hamilton Project, January 2020.