<Tr> <Th> Taxation in the United States of America </Th> </Tr> <Tr> <Td> Federal taxation (show) <Ul> <Li> Alternative minimum tax </Li> <Li> Capital gains tax </Li> <Li> Corporate tax </Li> <Li> Estate tax </Li> <Li> Excise tax </Li> <Li> Gift tax </Li> <Li> Income tax </Li> <Li> Payroll tax </Li> <Li> Internal Revenue Service (IRS) </Li> <Li> Internal Revenue Code (IRC) </Li> <Li> IRS tax forms </Li> <Li> Revenue by state </Li> <Li> History </Li> <Li> Constitutional authority </Li> <Li> Taxpayer standing </Li> <Li> Court </Li> <Li> Protest </Li> <Li> Evasion </Li> </Ul> </Td> </Tr> <Ul> <Li> Alternative minimum tax </Li> <Li> Capital gains tax </Li> <Li> Corporate tax </Li> <Li> Estate tax </Li> <Li> Excise tax </Li> <Li> Gift tax </Li> <Li> Income tax </Li> <Li> Payroll tax </Li> <Li> Internal Revenue Service (IRS) </Li> <Li> Internal Revenue Code (IRC) </Li> <Li> IRS tax forms </Li> <Li> Revenue by state </Li> <Li> History </Li> <Li> Constitutional authority </Li> <Li> Taxpayer standing </Li> <Li> Court </Li> <Li> Protest </Li> <Li> Evasion </Li> </Ul> <Li> Alternative minimum tax </Li>

What was the corporate tax rate in 2016