Amendment 16: Status of Income Tax Clarified

"The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration."

This amendment granted the United States the right to collect income tax without accounting for the population of the states.

Income Tax Guide

Provided by the Government Printing Office, the above link is a guide to the history of the sixteenth amendment, the purpose, and defines all details of income tax.  It is a very good reference guide if one has questions about this amendment.

This cartoon illustrates how costly income tax can be.  It encourages individuals to budget their money carefully to be able to pay this tax.