Very interesting interactive graph from the World Bank (Average percentage tax rate on corporate profit from 2000 to 2015). Provides empirical confirmation for the view that big business has been successfully reducing the amount of tax that it pays on profits during the past 15 years (actually it has been doing this since the late 1970s.)
tax rate measures the amount of taxes and mandatory contributions
payable by businesses after accounting for allowable deductions and
exemptions as a share of commercial profits. Taxes withheld (such as
personal income tax) or collected and remitted to tax authorities (such
as value added taxes, sales taxes or goods and service taxes) are
Source: World Bank, Doing Business project (doingbusiness.org).