Task Force on Tax / Task Force / Development Assistance Committee / German Agency for International Cooperation / civil society / Ghana’s Revenue Authority / United Nations / TIWB Secretariat / Norwegian Ministry of Foreign Affairs / Zambian government / South African Revenue Service / TIWB Task Force / European Union / OECD’s Committee on Fiscal Affairs / ATAF / TIWB Advisory Board / Advisory Board / OECD / United Nations Secretariat / /