The Institute on Taxation and Economic Policy (ITEP) has published the ITEP Guide to Fair State and Local Taxes:
[The guide] offers citizens, activists and policymakers a detailed primer on state and local tax policy. The guide explains the differences between progressive, flat and regressive taxes—and why you should care. It covers the full range of taxes that states and localities can impose, including personal and corporate income taxes, property taxes, and sales and excise taxes.
