Concealed Ownership of Contractors, Manipulation of Tenders and the Allocation of Public Procurement Contracts

This study provides evidence of a strong link between two channels facilitating rentextraction in public procurement: between concealing the ultimate ownership of contractors and manipulation of the anticipated value of tenders. Using data on more than 15 300 tenders awarded to joint-stock companies in the Czech Republic during 2005 - 2010, the study shows that tender value manipulation has been incentivized by the 2006 procurement reform, which established several discontinuities in the anticipated value of tenders. After the reform, manipulation increased much more for tenders awarded to contractors with anonymous owners as opposed to traceable owners. Contractors in manipulated tenders needed to underbid fewer firms in order to win procurements and their winning bids for comparable contracts were, on average, higher than before reform. The results imply disrupted optimality of contractor choice and reduced efficiency of procurement. The results are strongest for contracts on services and construction works, which traditionally conceal rentextraction more easily.