The total budget of the IHS in 2020 amounted close to 12 million euros, with funding provided mainly by basic subsidy, framework agreements and project-based funding:

The basic subsidy is currently provided by Federal Ministry of Finance (BMF), Austrian Central Bank (Oesterreichische Nationalbank, OeNB) the Austrian Economic Chamber (WKO) and the University of Vienna. Overall, it amounted about 46 % of the 2020 total budget. Third-party funding, primarily project-related funding and research projects accounted for over 54 % of the total budget in 2020. This funding can be roughly divided into commissioned research and research grants. In addition, there have been framework agreements with various ministries and stakeholder organizations in recent years.

The overall funding structure of the IHS has been stable in recent years, and averaged between €10 million and €12 million per year in 2017–2020.