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Estimation of Implicit Short-Term Inflation/Estimacao da Inflacao Implicita de Curto Prazo
Implicit inflation or break-even inflation rate (BEIR) is the difference between nominal and real interest rates. In the Brazilian market, we can obtain it from indexed government bonds. However, when dealing with short-term BEIR, this task presents two difficulties: a) inflation-indexed bonds have...
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Published in: | Revista Brasileira de Financas 2017-04, Vol.15 (2), p.227 |
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Main Authors: | , |
Format: | Article |
Language: | Portuguese |
Online Access: | Get full text |
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Summary: | Implicit inflation or break-even inflation rate (BEIR) is the difference between nominal and real interest rates. In the Brazilian market, we can obtain it from indexed government bonds. However, when dealing with short-term BEIR, this task presents two difficulties: a) inflation-indexed bonds have indexation lags; b) inflation seasonality implies real interest rate seasonality. The aim of this paper is to propose a methodology to estimate the short-term BEIR that addresses these two issues. Assuming a negligible inflation risk premium in the short run, we evaluate the predictive ability of the BEIR by confronting it with expectations based on the market analysts' forecasts published on the Focus Survey. The results show that the BEIR is competitive when compared to the Focus Survey. An advantage of the BEIR is that it allows monitoring of expectations better than surveys, since it is continuously updated. Keywords: Implicit Inflation, Inflation Forecasts, IPCA, DAP, NTN-B. A inflacao implicita e a diferenca entre as taxas de juros nominal e real. No mercado brasileiro, ela pode ser obtida facilmente a partir de titulos publicos prefixados e indexados a inflacao. No entanto, quando tratamos da inflacao implicita de curto prazo, tal tarefa apresenta duas dificuldades: a) os titulos indexados a inflacao possuem defasagem de indexacao; b) a sazonalidade da inflacao implica sazonalidade da taxa real. O objetivo deste trabalho e propor uma metodologia para estimacao da inflacao implicita de curto prazo que trate desses dois problemas. Assumindo que o premio de risco da inflacao e pequeno no curto prazo, avaliamos a capacidade de previsao da inflacao implicita confrontando-a com expectativas baseadas em pesquisas. Os resultados mostram que a inflacao implicita e competitiva em relacao as previsoes de analistas de mercado divulgadas no Boletim Focus. Uma vantagem da inflacao implicita e o fato de ela permitir um acompanhamento mais estreito das expectativas do que as pesquisas, uma vez que ela e atualizada continuamente. Palavras-chave: Inflacao Implicita, Previsao de Inflacao IPCA, DAP, NTN-B. Codigos JEL: E31, E43, E44. |
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ISSN: | 1679-0731 |