The double taxation treaty between Belgium and Brazil has been around quite some time, in 1972 Belgium and Brazil reached a principal agreement on this subject. The Belgian side had added the personal income tax, business tax and tax for non-residentials, as well as corporate taxes, while the Brazilian side only added the income tax (IRPJ) . Since December 2015, the CSLL (Social Contribution on Net Profit) is also part of the treaty.
What does this mean for you and your company? This tax is calculated on the profit of your Brazilian corporation after tax deduction and varies between 9 and 13%. When transfering your profit to Belgium, you had to pay the CSLL in Brazil, as wel as taxes on profit in Belgium. As of now, this will no longer be the case, since the adaptation was approved via law 13.202 of December 9th, 2015.