O presente artigo avalia, para o caso brasileiro, se a inflação implícita extraída dos títulos de renda fixa constitui um estimador não viesado da inflação ao consumidor, medida pelo IPCA. Nossas estimativas sugerem que as break-even inflation rates - ou simplesmente BEIRs - trazem informação relevante a respeito da inflação futura, especialmente para a maturidade de três meses. A principal inovação de nosso trabalho, contudo, está no método utilizado para a estimação, que nos permite concluir que o prêmio de risco da inflação, para algumas das maturidades consideradas, varia ao longo do tempo e não é desprezível do ponto de vista econômico. Comparamos também as previsões de inflação obtidas a partir das BEIRs com os modelos VAR utilizados pelo Banco Central e as estimativas dos Top5 do Relatório Focus. As previsões realizadas com as BEIRs mostraram maior acurácia que aquelas extraídas dos modelos VAR, porém, menos precisas que as geradas pelos Top5.
This paper examines, for the Brazilian case, if break-even inflation rates (BEIR) extracted from fixed income securities is an unbiased estimator of consumer inflation, measured by the CPI. Our estimates suggest that BEIRs are informative about future inflation, especially for the maturity of three months. The main innovation of our work, however, is the method used for estimation, allowing us to conclude that the inflation risk premium, for some maturities considered, varies over time and is not irrelevant from the economic standpoint.We also compared the inflation forecasts obtained from BEIRs with the ones extracted from VAR models used by Central Bank and estimates from the Focus Survey Report's Top5s.The forecasts performed with BEIRs showed greater accuracy than those extracted from VAR models. These projections, however, underperformed those from the Top5s.JEL Classification: E31, E43, E44.
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