Public Co-Financing of Private Sector's Investments: Subsidiarity and Corruption

The literature on corruption makes unclearpredictions on the relations betweensubsidiarity principle, according to whichpublic decisions should be done at thelower level government possible, andcorruption of public officials. In thispaper, we compare two alternative regimes,centralised vs. decentralised, forthe public co-financing of privateprojects. We show that, in the absence ofcorruption, the two regimes give the same results. Borrowing from the Chamberlin's analysis ofmonopolistic competition and from therent-seeking literature, we introducecorruption in the model as a selling costfor the private suppliers. We show that acentralized regime causes higher corruptionlevels because of the higher number ofprivate suppliers of competing projects. Asa result, a central government tends tohave a higher level of public capitalexpenditure than two (equally corruptible)regional governments.