ARTICLE 20 BIS: RULES FOR DETERMINING THE NATIONAL CONSUMER PRICE INDEX

     

    The National Consumer Price Index (Índice Nacional de Precios al Consumidor) referred to in the second paragraph of article 20 of this Code (CFF: Art. 20), calculated by the National Institute of Statistic and Geography (Instituto Nacional de Estadística y Geografía), is subject to the following:

  • At least 30 prices will be quoted in 30 cities, which will be located in at least 20 federal entities. In any case, the selected cities must have a population of 20,000 or more inhabitants, and the 10 most populated areas or most populated cities in the Republic must always be included.
  •  

  • The prices corresponding to at least 1000 specific products and services grouped into 250 consumption concepts must be quoted, which will cover at least 35 branches of the agricultural, livestock, industrial and services sectors, according to the catalog of economic activities prepared by the National Institute of Statistic and Geography (Instituto Nacional de Estadística y Geografía).
  •  

  • In the case of food, price quotes will be made at least three times during each month. The rest of the quotes will be obtained one or more times monthly.
  •  

  • The price quotes with which the National Consumer Price Index (Índice Nacional de Precios al Consumidor) for each month is calculated must correspond to the period in question.
  •  

  • The National Consumer Price Index (Índice Nacional de Precios al Consumidor) for each month will be calculated using the Laspeyres formula. Weighting factors will be applied for each household consumption and considering the following concepts:
  •  

    Food, drinks and tobacco; clothing, footwear and accessories; housing; furniture, appliances and household goods; health and personal care; transport; education and recreation; other services.

    The National Institute of Statistic and Geography (Instituto Nacional de Estadística y Geografía) will publish in the Official Journal of the Federation (Diario Oficial de la Federación) the federative entities, conurbation zones, cities, articles, services, consumption concepts and branches referred to in sections I and II of this article, as well as quotes used to calculate the National Consumer Price Index (Índice Nacional de Precios al Consumidor).