The Common Agricultural Policy (CAP) is the European Union's flagship policy for supporting the agricultural sector, ensuring food security, and safeguarding rural development. The CAP is also a key tool for reaching EU’s sustainability objectives, as set out in the European Green Deal and associated policies, and in DG AGRI’s Vision for Agriculture and Food, in which Commissioner Hansen indicates how the agricultural sector can be made future-proof (i.e. attractive, competitive, resilient and sustainable). With these policy strategies, the EU aims for more sustainable food systems. Effectively supporting the policy impact assessment in this new context is a great challenge for the existing quantitative modelling tools as it requires them to substantially enhance the thematic coverage to comprehensively address all the components of the European Green Deal and ensure consistency with the monitoring systems in place. ACT4CAP27 responses to this challenge by enhancing the analytical capacity of the key policy tools (CAPRI,GLOBIOM,MAGNET,AGMEMOD) used by the European Commission to assess short-term and long-term policy impacts on EU’s agri-food systems and providing evidence-based knowledge supporting analysis for the design of agri-food policies post 2027.