Gerais

Customs Brokers and Forwarders Council of Australia (CBFCA)

 National Association of Tax Consultants (NATC - EUA)

Association de Planification Fiscale et Financière (APFF - Canadá)

 Association for Computers & Taxation (ACT - EUA)

Canada Tax Property Association (CPTA)

 The Heritage Foundation - Tax Reform Now! (EUA)

Asociación de Fiscalizadores de Impuestos Internos de Chile (AFIICH)

 The Tax Foundation (EUA)

Asociación de Subinspectores de Tributos (AST - Espanha)

 Istituto Nazionale Tributaristi (Itália)

Asociación Española de Asesores Fiscales (AEDAF)

 Associazione Nazionale Uffici Tributi Enti Locali (ANUTEL - Itália)

American Tax Policy Institute (ATPI)

 Customs Brokers and Freight Forwarders Federation of New Zealand (CBAFF)

National Tax Association (NTA - EUA)

 Association of Taxation Technicians (ATT - Reino Unido)

Federation of Tax Administrators (FTA - EUA)

 Chambre Nationale des Conseils Fiscaux (CNCF - Tunísia)

National Association of Tax Professionals (NATP - EUA)

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Contribuintes

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