UNIDO has access to a number of dependable financial channels. It has cooperative relationships with institutions operating under the framework of the United Nations, including United Nations Development Programme (UNDP), World Bank, IFC, International Development Association (IDA), United Nations Environment Programme (UNEP), Global Conventions and other multilateral and bilateral donors. In addition, UNIDO has also forged an active working relationship with several financial organizations, investment banks and specialized investment funds, including the Asia Development Bank, the European Union EuropeAid, Nordic Investment Bank, African Development Bank, HSBC Asia Investment, Asia Development Fund, Morgan Stanley and Merrill Lynch. UNIDO has links with more than 30, 000 enterprises and investment institutions in the developed world.

UNIDO's regular budget comes from subscription fees from its member countries. Technical cooperative programmes are typically supported by specific donations or Global Environment Fund.