Tax Data
Income Taxes
The U.S. federal individual income tax was enacted in 1913 following the passage of the 16th Amendment. Today, most states and a small number of local and municipal governments also collect income taxes. Income taxes today provide the largest single source of federal revenues, some $1 trillion in 2006. Click here for the Tax Foundation's latest summary of federal individual income tax data.
Additional questions about the income tax? Contact Bill Ahern at (202) 464-5101.
Tax Data from The Tax Foundation
- Links to State Individual Income Tax Forms, February 15, 2008
- Total Income by State Per Household, Calendar Year 2007, February 5, 2008
- State Individual Income Tax Rates, 2000-2008, February 3, 2008
- U.S. Federal Individual Income Tax Rates History, 1913-2008, January 7, 2008
- Impact of the Alternative Minimum Tax (AMT) by County, 2005, September 24, 2007
- Impact of the Alternative Minimum Tax (AMT) by Major City Areas, 2005 , September 24, 2007
- Impact of the Alternative Minimum Tax (AMT) by Congressional District, 2005 , September 24, 2007
- Itemization Rates by State, 2005, July 24, 2007
- Impact of the Alternative Minimum Tax (AMT) by State, 2005 , July 18, 2007
- Dividends and Capital Gains Income Compared to Other Income by State, 2005, July 16, 2007
- State and Local Individual Income Tax Collections Per Capita, 2005, June 18, 2007
- State Individual Income Tax Collections, 2006, June 18, 2007
- Impact of Bush Tax Cuts on AMT and Non-AMT Returns for 2007 Under Current Law, May 31, 2007
- History of Alternative Minimum Tax (AMT) Returns and Liabilities, 1970-2005, February 22, 2007
- Federal Individual Income Tax Burden by County, 2004, January 17, 2007
- Federal Individual Income Tax Burden by Major City Area, 2004, January 17, 2007
- Federal Individual Income Tax Burden by Congressional District, 2004, January 17, 2007
- Taxable Dividend Income by State, 2000, 2003, December 7, 2005
- 1913 Internal Revenue Service 1040 Form, January 1, 2005