This paper presents a tax reform proposal on consumption in Brazil. The basic idea is to add several taxes in a single Value Added Tax (VAT). Unlike the other proposals, which suggest a strategy automatically encompassing all federated entities, our study suggests a dual and modular reform based...

This paper developed and applied the Stochastic Frontier Geographically Weighted (SFGW) to access the tax efficiency of the Brazilian states. The estimated coefficients obtained by this method were close to those from the traditional Stochastic Frontier estimation allowing, however, the...