Adam, Isabelle; Blum, Jürgen Rene; & Fazekas, Mihály. (2025) Improving Public Procurement Outcomes: A Review of Tools and the State of the Evidence Base. GTI-WP/2025:01, Budapest: Government Transparency Institute.
Considering that about 15% of global GDP flows through public procurement systems, there is a strong need for evidence on what works in this field. This paper systematically reviews the state of the evidence in academic and policy literature on public procurement reforms and their impact on value for money and …