[Interference by the tobacco industry in data on cigarette consumption in Brazil].

The tobacco industry normally overestimates the illegal market's size in order to reinforce the idea of its direct relationship to the choice to increase taxes by the internal revenue administration. In Brazil, the last increase in taxes on tobacco products was in 2016. The growth of demand for illegal cigarettes has other macrosocial determinants that the industry does not take into account, such as the increase in the economic capacity to purchase legal cigarettes. The article aims to test the hypothesis of the "Brazilian consumer's economic reason" from 2015 to 2019 by comparing the estimated consumptions of illegal cigarettes, based on official government data on legal production and cigarette consumption with an "extraofficial estimate" furnished by the industry. The study also used official national data on monthly income from work. The Brazilian population's "purchasing capacity for legal cigarettes" increased systematically from 2016 to 2019, from 412 packs/month to 460 packs/month. The absolute difference between the estimate by the tobacco industry and the estimate based on official data on the volume of illegal cigarettes that were consumed increased over time, reaching +30.2 billion units in 2019. Meanwhile, legal cigarette consumption, calculated with official data, increased from 2016 through 2019 (+7.8 billion), while the industry estimated a reduction in this consumption (-9.5 billion). Policymakers should seek to base their decisions on estimates generated from official data sources, including macroeconomic data on employment and income, rather than to use estimates produced by the tobacco industry that aim to interfere in public policies.