| Organization | Description |
|---|---|
| Americans for Tax Reform | Seeks fairer, flatter, more visible, lower taxes to minimize government control |
| Cato Institute Fiscal Studies | Examines taxation and spending policies at all levels of government |
| Heritage Foundation | Examines tax and budget issues at the federal level |
| National Center for Policy Analysis | This Texas-based think tank goes in-depth on tax issues |
| Oregon Tax Research | Independent non-partisan research of Oregon government since 1935 |
