Brazil's Supreme Federal Court has issued a release on its recent decision concerning whether the Municipal Tax (ISS) should be included in the basis for calculating the social contributions on gross revenue (PIS and COFINS). The case originated from an appeal filed by Viação Alvorada Ltda., which challenged a lower federal court ruling that permitted the inclusion of ISS when calculating PIS and COFINS liabilities. In challenging the inclusion of ISS, the taxpayer argued that local tax col…