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Este artigo quantifica os aspectos distributivos da previdência social no Brasil, por meio do cálculo das Taxas Internas de Retorno (TIRs) proporcionadas pelas contribuições e benefícios previdenciários. Os grupos com menor nível de educação apresentam TIRs mais elevadas. As taxas também são diferenciadas conforme as regiões do país. As TIRs têm crescido ao longo do tempo. Há evidências da existência de características distributivas na previdência. Foram computados todos benefícios e contribuições, no período 1976-1999. Foram estimados os fluxos esperados de contribuições e benefícios de grupos de indivíduos representativos. Com base nestes fluxos foram calculadas as TIRs intrínsecas ao sistema previdenciário. This paper studies the distributive aspects of the Brazilian social security system. Contributions made and received benefits for each individual were considered, in the period 1976-1999. The expected contributions and benefits flows of representative groups of individuals were then estimated. For each group, the internal rates of return inherent to the social security system were assessed. Groups with lower education levels achieve the highest rates of return. The rates are also different according to the country's regions. The rates of return have grown over the years. These results evidence the existence of distributive characteristics in the Brazilian social security system

Uma estimativa dos aspectos distributivos da previdência social no Brasil