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Compatibilização de Mudanças em Classificações Desagregadas do IPCA (1999-2014)

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  • Thiago Sevilhano Martinez

Abstract

Este texto propõe três adaptações relacionadas a desagregações do Índice Nacional de Preços ao Consumidor Amplo (IPCA) com o intuito de disponibilizar dados relevantes para estudos sobre inflação no Brasil em cortes desagregados, em periodicidade mensal de agosto de 1999 a setembro de 2014. Na primeira, é feita a compatibilização das séries de subitens, o nível mais desagregado do IPCA, entre as três estruturas de ponderação vigentes desde o início do regime de metas de inflação: de agosto de 1999 a junho de 2006; de julho de 2006 a dezembro de 2011; e de janeiro de 2012 em diante. Resultaram do procedimento 313 séries de subitens, que cobrem no mínimo 95% da ponderação do IPCA em cada mês do período. Na segunda, são retrocedidos até 1999 os rótulos vigentes atualmente das classificações desagregadas do Banco Central do Brasil (BCB) em comercializáveis, não comercializáveis e monitorados (CNCM) assim como em duráveis, não duráveis, semiduráveis, serviços e monitorados (DNDS). As séries assim obtidas são comparadas com as originais do BCB, nas quais as reclassificações não são retrocedidas. Também são calculadas as séries da classificação em alimentos e bebidas, produtos industriais, serviços e monitorados (AISM), usada pelo BCB em curvas de Phillips desagregadas. Na terceira, as séries de subitens compatibilizadas desde 1999 são classificadas segundo a desagregação do IPCA por natureza dos produtos de Martinez (2014), a qual também é baseada nas classificações do BCB. This text proposes three adaptations related to disaggregations in the Brazilian National Consumer Price Index (IPCA) in order to provide relevant data for studies on inflation in disaggregated cuts, in monthly periodicity from August 1999 to September 2014. In the first, the compatibilization of sub-items series, the most disaggregated level of the IPCA, is made between the three existing weighting structures since the beginning of the inflation targeting regime: from August 1999 to June 2006; from July 2006 to December 2011; and from January 2012 onwards. Resulted from the procedure 313 sub-items series, covering at least 95% of the IPCA weighting in each month of the period. In the second, the current labels on the classifications of the Central Bank of Brazil (BCB) into tradables, non-tradables and regulated, as well as into durables, non-durables, semi-durables, services and regulated, are retroceded until 1999. The series thus obtained are compared with the original from BCB, in which reclassifications are not retroceded. The series corresponding to classifications used by the BCB in disaggregated Phillips curves, food and beverages, industrial products, services and regulated are also calculated. In the third, the sub-items series compatibilized since 1999 are sorted following the IPCA disaggregation by type of product proposed by Martinez (2014), which is also based on the classifications of the BCB.

Suggested Citation

  • Thiago Sevilhano Martinez, 2015. "Compatibilização de Mudanças em Classificações Desagregadas do IPCA (1999-2014)," Discussion Papers 2056, Instituto de Pesquisa Econômica Aplicada - IPEA.
  • Handle: RePEc:ipe:ipetds:2056
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