Abstract
In this paper we analyse data on the rates of return of investment projects sponsored by three international institutions: the European Union, the European Bank for Reconstruction and Development, the World Bank. The focus of the paper is on the evaluation of the variability of ex-ante economic rates of return, of financial rates of return and ex-post or re-estimated economic rates of return. We propose a framework of analysis of rates of return variations across projects, sectors, financing institutions, of the wedge between economic and financial, and of the gap between ex-ante and ex-post returns. In principle the same framework could be used for comparing rates of return variability of development projects across countries, time of approval or exit, or other relevant sampling criterion. We discover a pattern of variations across sectors. And we find that cost-benefit analysis generates larger variability of rates of return than financial analysis.
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