December 6: Decrees no. 7631, no. 7632, and no. 7633, published December 1, 2011, in the official gazette (Diário Oficial da União) include amendments to the excise tax rates (IPI), to the rates of tax on financial transactions (IOF), and to the special tax refund regime (Reintegra) for exporting companies. All three decrees have an effective date of December 1, 2011.