peer reviewed ; The Common Agricultural Policy (CAP) has been reformed several times since the treaty of Rome in 1958. For the period 2014-2020 at the European level, a new CAP had to be agreed upon by the 27 Member States and the EU parliament. Discussions were launched in 2010 and several proposals were made. In Belgium, as agricultural policy is regionalized, the Walloon Minister for Agriculture decided to support academic research in order to assess the possible impact of different scenarios on farm income, and so to help the regional authorities to take decisions when the EU legislation would be adopted, giving a large set of possibilities to the Members States/regions. So, different scenarios were defined with the partners of the administration, including farmers' unions, and their impacts on farm income were calculated.