The Federation of Tax Administrators provides analyses of U.S. state taxation. In addition, they provide links to state and federal tax agencies. According to the FTA website, the FTA "was organized in 1937 to improve the quality of state tax administration by providing services to state tax authorities and administrators." To find the FTA's state tax information click on "State Comparisons" to the left, then "Tax Rates." In addition to state income tax information, you will find information on sales taxes, excise taxes, and other taxes at the state level.