American Battlefield Trust
American Battlefield Trust: Civil War: The First Income Tax
This site provides an overview of the development of the first national income tax, instituted to fund the Civil War.
Thomson Reuters
Find Law: u.s. Constitution: Sixteenth Amendment
This resource provides a detailed overview of the 16th amendment to the U.S. Constitution. Content includes a focus on income tax, the history and purpose of the amendment, and the incomes subject to taxation.
Council for Economic Education
Econ Ed Link: Taxes and Income
Use this interactive graph to gain an understanding of how taxes increase as your income goes up. The y-intercept line shows the base tax amount for no income.
Digital History
Digital History: Conservative Policies and Presidents [Pdf]
Starting in 1920 the United States had three presidents who followed conservative policies. Read about their policies, and determine whether they made the U.S. a more economically sound country. [pdf]
Cuemath
Cuemath: Taxes
A comprehensive guide for learning all about taxes with definitions, formulas, different types of taxes, solved examples, and practice questions.
iCivics
I Civics: Taxation
This lesson teaches the basics of taxes: what they are, who pays them, what kinds exist, and what they're used for. Young scholars learn how people's income is taxed, how much revenue taxes generate, and how taxes and government services...