El origen de la desigualdad y la progresividad en la distribución de la financiación de las Comunidades Autónomas de régimen común

The present paper has as aim to analyse the contribution to the inequality and progressiveness of financing resources of Comunidades Autónomas. In the first part we resume the literature on measurement of the horizontal fiscal imbalances in systems of federal funding, where we confirm the absence of instruments that measure the individual impact of each source of revenue. In the part 2 we propose the methodology to apply, in concrete the natural decomposition of the indexes of concentration and the direct decomposition of the index of Suits. In the part 3 we present the results of the application of the methodology proposed. And finally in the part 4 we present the conclusions, resulting that it is the Fondo de Suficiencia, as variable closing of the system, who determines the final distribution of resources and his progressive sense, but since a part of progressiveness disappear by the behaviour of the tributos cedidos, results indispensable the FCI to compensate said loss.