The growing grain market emerges the need for actions that stimulate rural economic development, from state support, through the Agricultural and Livestock Plan, from financing to commercialization of production. As the agricultural sector develops, the Agricultural Policy proves important in the provision of rural credit and insurance, and special sectoral promotion programs. The present work had as objective to demonstrate the importance of the Agricultural Policy for agribusiness, its reflexes and challenges, before the representativeness of this sector for the municipality of Rio Verde / GO, the State of Goiás and the country. The aim was to evaluate the instruments capable of promoting the agricultural / rural development offered by the State, and its function in relation to the system of storage, commercialization and distribution of production. The work was based on the inductive method, and quantitative and qualitative bibliographical research was carried out on materials published in official agencies of the agricultural sector, with the collection of indexes and accurate data. A study was carried out on grain marking in Rio Verde / GO, the role of tradings, multinationals and cooperatives, and the grain storage system. Finally, discussions were held on the outflow of production, currently one of the major problems facing agribusiness. It has been seen that credit and tax incentives contribute significantly to the development of agricultural activity and the Agricultural Policy is responsible for implementing guidelines that assist the farmer in all stages of production.