IFA maintains close contact with the fiscal activities of the OECD, the EU, the UN, the CIAT, the EATLP, the ECLA, the IOTA, the ICC, and various other organisations, including its Sister Organisation, the International Bureau of Fiscal Documentation.
An illustration of IFA's unique role in the world of taxation, where the public and private sectors are natural adversaries, is the fact that at each Congress a joint IFA/OECD Seminar is held with Panelists belonging to both organisations to discuss issues of common interest.
Also a joint IFA/EU Seminar is organsied at each Congress that aims to discuss international tax measures adopted by the European Commission as well as the impacts of such measures.
BIAC – The Business and Industry Advisory Committee to the OECD
CIAT – Inter-American Center of Tax Administrations
EATLP – European Association of Tax Law Professors
ECLA – European Company Lawyers Association
EU – European Commission
IATJ – International Association of Tax Judges
IBFD – International Bureau of Fiscal Documentation
ICC – International Chamber of Commerce
OECD – Organisation for Economic Co-operation and Development
UN – United Nations, Income Tax Unit