The Brazilian agricultural sector is characterized by a great diversity of production systems subject to a wide number of risk factors. These risks cannot be completely eliminated, but they can be minimized by the adoption of some strategies, such as diversification of agricultural and livestock activities. In this light, a comparative analysis, under operational and market risk conditions, of the financial viability of integrated crop-livestock systems, in relation to systems characterized by grain exploitation or specialized in livestock (beef cattle), was done. The methodology included data on farming in Paraná state, especially the in area of Guarapuava. Long term financial indicators were generated: net present value, internal return rate and cost-benefit analysis. The results show that, in both deterministic and uncertain conditions, the integrated system generates the best financial results.