The paper deals with the evaluation of disparities in economic performance of Czech farms focused on field production and the identification of factors that determine the differences in economic performance. The methodological tools are Gini coefficient, correlation coefficients and regression model of gross value added. Data sources are especially the Creditinfo – Firemní monitor and the State Agricultural Intervention Fund, from which the data of circa 140 farms from years 2005-2010 were obtained. The results document the high inequality of value added, which is eliminated by operating subsidies. Mentioned effect of subsidies is not fully transferred to the inequality of economic results due to different levels of cost and other business activities. In terms of the analyzed factors, the significant impacts of agricultural land, staffing and natural conditions were verified on the level of gross value added.
