Actual U.S. corporate tax rates are about half the official 35 percent rate: Comparison of U.S. statutory and estimated average effective corporate tax rates

 Source  Tax Rate
Statutory rate 35.0% 
Effective rate (CTJ estimate) 19.4%
Effective rate (Zucman estimate) 12.5%
Effective rate (GAO estimate) 14.0%

Sources: Americans for Tax Fairness (ATF) and EPI analysis of McIntyre, Gardner, and Phillips (2014a, i); Zucman (2014, 132–133); and GAO (2016, 13)

View the underlying data on epi.org.