Nowadays, most commercialized genetically modified agricultural products are corn, tomatoes, cotton, canola and soybeans. This study focuses on the theoretical evaluation of yield and production costs in genetically modified corn harvest. While making an economic evaluation, input, crop quality and revenue were taken into account as profitability factors. It is assumed that there is no demand difference between agricultural products. The topic of possible economic impacts of genetically modified seeds has been prepared in a way that encompasses both positive and negative perspectives. In the introduction part of the study, basic theoretical information about the genetic change is given and how the genetics of the seed is changed, its cost and whether it provides an increase in productivity has been investigated. In the first part, general information about Genetically Modified seed market is given. In the second part, economic evaluation is made based on genetically modified maize. In this section, the economic theoretical model designed by Gerald C. Nelson for the operation of the GM seed market is examined. In the third chapter, the profitability evaluation of genetically modified corn is given. In the fourth part, the commercial aspect of the issue is handled and the result is shared