It is well known that the Brazilian municipalities aim to increase their own revenues and reduce dependence on state and federal financial transfers, optimizing their tax revenues. It is also known that the municipalities intend to carry out that mission with integrity, clarity and to present easily the accountability to regulators, as well as to their respective populations. In this paper carried out a study on the methodology employed in a town in central-southern state of Paraná to calculate the venal values and property tax (IPTU) and the consequent taxation of IPTU and ITBI in these goods. Based on municipality registration data was developed, by means of multivariate statistical techniques, an analysis of the characteristics that most influence the monetary valuations of the property, and applying multiple linear regression analysis are proposed models to estimate values of the venal values of properties, allowing tax calculations predict through it. Finally, comparisons are presented between the results from the methodology used by the municipality with those obtained by the models developed, proposed for use in general.
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