O Imposto de Transmissão Causa Mortis e Doações (ITCMD) na Receita Tributária do Estado do Rio Grande do Sul

Abstract

This dissertation investigates the impact of changes in the rates of the Inheritance and Donations Tax (ITCMD) on tax collection and taxpayer behavior in the state of Rio Grande do Sul. The ITCMD is a tax levied on the transfer of assets and could represent a good source of tax revenue for the state. Regulated by Law No. 8.821/1989, the tax was modified by Law No. 14.471/2015, introducing progressivity and resulting in significant revenue increases starting in 2016. The study, based on the Theory of Rational Expectations, analyzes whether taxpayers anticipated the payment of the tax to avoid the application of the new rates. Data from 2010 to 2019 from the Treasury Department were assessed through time series modeling, including Chow, CUSUM and Sup-Wald tests, to identify structural breaks in tax behavior. The results indicate that, in 2015, there was a significant anticipatory behavior regarding donations, reflected in a substantial increase in tax revenue in the months leading up to the change.