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.
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