The core funding of the OeAI is covered by the Austrian Academy of Sciences. In addition, numerous projects are financed through external funds from public research funding institutions, such as the Austrian Science Fund (FWF), the Anniversary Fund of the OeNB, the Austrian Research Community (OeFG), the European Research Council (ERC), and the Innovationsfonds. Also, the provinces of Burgenland, Carinthia, Lower Austria, Upper Austria, and Vienna as well as the Federal Monuments Office fund projects of the OeAI.
Furthermore, international cooperation partners carry out independent research projects on excavations under the permit of the OeAI that are externally financed (e.g. German Research Foundation - DFG).