| Countries (A to Z) |
Description |
| Australia |
Centre for Independent Studies |
| Brazil |
Instituto Brasileiro de Planejamento Tributario |
| Canada |
Fraser Institute |
| Croatia |
The Adriatic Institute for Public Policy |
| Czech Republic |
Liberalni Institut |
| Germany |
Steuerzahler Bund |
| India |
Centre for Civil Society |
| Israel |
Jerusalem Institute for Market Studies |
| Lithuania |
Lithuanian Free Market Institute |
| Poland |
Centrum im. Adama Smitha |
| Slovakia |
Association of Slovak Taxpayers |
| South Africa |
Free Market Foundation |
| Sweden |
skattebetalarna |
| United Kingdom |
Adam Smith Institute |
| United States |
Tax Foundation |