Income taxes were used during the Civil War

Which Constitutional amendment made income taxes permanent?

Income taxes were first levied for what purpose?

During WWI Congress introduced payroll withholding and quarterly tax payments

The highest tax rate (on the wealthy) was

Taxes have always been due on April 15th

Who was President when income taxes became permanent?

How much did the IRS collect in 2016?

The original IRS form 1040 had how many pages?

The lowest tax rate was