Genetic modification of crops has taken the national and international spotlight in recent months. Crops classified as genetically modified organisms (GMOs) have become increasingly available to Iowa farmers over the past few years. Although GMO crops have gained in popularity, the extent of their impact on costs and returns to Iowa farmers are not fully understood. There have only been a few comparisons of GMO versus non-GMO crops. This article discusses the impact of GMO soybeans versus non-GMO soybeans with cross-sectional data for 1998.