Income tax is a direct tax which is levied on the income of private individuals. Various income tax systems exist. Those range from a flat tax to an extensive progressive tax[?] system.
Taxes levied on the income of companies is called corporate tax[?].
... under the age of 18 living with them, 65.1% are married couples living together, 8.7% have a female householder with no husband present, and 23.4% are non-families. 20.1% ...