This article proposes to compare the performance to both Islamic and conventional insurance. To do this, a sample made up of 9 insurance companies from 2000 to 2013 is used. The results indicate that risk premiums and size explain the difference between two insurance industries. Moreover, these two variables have a more favorable effect on the performance of Islamic and conventional insurance. Regardless of the choice of the period, the estimation technique or the method for accounting for the efficiency of insurance, these results remain unchanged.