Despite a specific law obligation to insure at least 50% of the areas, only about 11% of the farmers insure crop. Such a low percentage of insurance raises the question of the reality of the stabilizing effect of crop insurance on income. In order to answer this question in the study the impact of crop insurance on the variance of gross value added in the farm was investigated. Based on a sample of 590 households, it was found that, such an effect exist only in the case of holdings specializing in crop production. Additionally, the importance of an adequate regression model, depending on the response variable distribution and sampling methods was shown.