0
Before tax income is gross income less allowable deductions and rebates = assessable income.
After tax income is assessable income less the applicable income tax
Income tax IS based on your income that is why it is called INCOME tax.
Yes. Any tax on income is income tax. Taxes imposed after income, such as sales tax, aren't.
A income tax is a tax levied on the income of individuals or business.
Net income is what you get after tax, gross income is before tax.