Discussing selected issues referring to input-output analysis, identifying on this basis the role of Polish agribusiness sector in national economy and creating short- and mid-term projections about changes in these parts of input-output tables that concern Polish agriculture and food industry. Chapters: The importance of agriculture in the economy. Analysis of development processes in agriculture at using input-output tables. Projection of input-output flows in agribusiness in Poland after 2020. Projection of changes in the structure of input-output flows and international experience.